Detecting optical lens assembly, image acquisition unit and electronic device

Abstract

A detecting optical lens assembly comprising eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8), wherein the eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) are, in order from an object side to an image side along an optical path, a first lens element (E1), a second lens element (E2), a third lens element (E3), a fourth lens element (E4), a fifth lens element (E5), a sixth lens element (E6), a seventh lens element (E7), and an eighth lens element (E8), and wherein each of the eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) has an object-side surface facing the object side and an image-side surface facing the image side; wherein the first lens element (E1) has a negative refractive power, the object-side surface of the fourth lens element (E4) is convex in a paraxial region thereof, the image-side surface of the fifth lens element (E5) is concave in a paraxial region thereof, the object-side surface of the seventh lens element (E7) has at least one inflection point (P), the eighth lens element (E8) has a negative refractive power and the object-side surface of the eighth lens element (E8) is concave in a paraxial region thereof; wherein the detecting optical lens assembly further comprises an aperture stop (ST), an axial distance between the object-side surface of the first lens element (E1) and the image-side surface of the third lens element (E3) is Dr1r6, an axial distance between the aperture stop (ST) and the image-side surface of the eighth lens element (E8) is SD, an axial distance between the second lens element (E2) and the third lens element (E3) is T23, an axial distance between the third lens element (E3) and the fourth lens element (E4) is T34, an axial distance between the fourth lens element (E4) and the fifth lens element (E5) is T45, an Abbe number of the third lens element (E3) is V3, a refractive index of the third lens element (E3) is N3, and the following conditions are met: 1.05 < Dr1r6 / SD < 2.00 ; 0.03 < (T23 + T45) / T34 < 5.00; and 17.00 < V3 / N3 < 50.00.

Description

BACKGROUNDTechnical FieldThe present disclosure relates to a capturing optical lens assembly, an image capturing unit, and an electronic device, and more particularly, to a capturing optical lens assembly and an image capturing unit applicable to an electronic device.Description of Related ArtAs semiconductor manufacturing technology has evolved, image sensor performance has improved and its pixel size has been reduced. Therefore, high image quality is one of the indispensable features of an optical system today.Moreover, due to the rapid technology traveling, electronic devices equipped with optical systems have a trend toward multifunctionality for various applications, so that demands on the functionality of the optical systems have been increased. However, for a conventional optical system, it is difficult to achieve balance among requirements such as high image quality, low sensitivity, an appropriate aperture size, miniaturization, and a desirable field of view.SUMMARYAccording to one aspect of the present disclosure, a sensing optical lens assembly includes eight lens elements. The eight lens elements are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element. Each of the eight lens elements has an object-side surface facing the object side and an image-side surface facing the image side.Preferably, the first lens element has a negative refractive power. Preferably, the object-side surface of the fourth lens element is convex in a triaxial portion thereof. Preferably, the image-side surface of the fifth lens element is concave in a triaxial portion thereof. Preferably, the object-side surface of the seventh lens element has at least one inflection point. Preferably, the eighth lens element has a negative refractive power. Preferably, the object-side surface of the eighth lens element is concave in a triaxial portion thereof. Preferably, the detecting optical lens assembly further comprises an aperture stop.When an axial distance between the object-side surface of the first lens element and the image-side surface of the third lens element is Dr1r6, an axial distance between the aperture stop and the image-side surface of the eighth lens element is SD, an axial distance between the second lens element and the third lens element is T23, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, an Abbe number of the third lens element is V3, and a refractive index of the third lens element is N3, the following conditions are preferably satisfied: andAccording to another aspect of the present disclosure, a sensing optical lens assembly includes eight lens elements. The eight lens elements are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element. Each of the eight lens elements has an object-side surface facing the object side and an image-side surface facing the image side.Preferably, the object-side surface of the second lens element is concave in a triaxial portion thereof. Preferably, the image-side surface of the second lens element is convex in a triaxial portion thereof. Preferably, the object-side surface of the fourth lens element is convex in a triaxial portion thereof. Preferably, the fifth lens element has a negative refractive power. Preferably, the object-side surface of the seventh lens element has at least one inflection point. Preferably, the detecting optical lens assembly further comprises an aperture stop.When an axial distance between the object-side surface of the first lens element and the image-side surface of the third lens element is Dr1r6, an axial distance between the aperture stop and the image-side surface of the eighth lens element is SD, a radius of curvature of the image-side surface of the first lens element is R2, a radius of curvature of the image-side surface of the eighth lens element is R16, and a maximum field of view of the detecting optical lens assembly is FOV, the following conditions are preferably satisfied: andAccording to another aspect of the present disclosure, an image capturing unit includes one of the aforementioned capturing optical lens assemblies and an image sensor, the image sensor being disposed on an image surface of the capturing optical lens assembly.According to another aspect of the present disclosure, an electronic device includes the aforementioned image acquisition unit.BRIEF DESCRIPTION OF THE DRAWINGSThe disclosure may be better understood when the following detailed description of the embodiments is read with reference to the accompanying drawings: FIG. 1 is a schematic view of an image capturing unit according to the first embodiment of the present disclosure; FIG. 2 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the first embodiment; FIG. 3 is a schematic view of an image capturing unit according to the second embodiment of the present disclosure; FIG. 4 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the second embodiment; FIG. 5 is a schematic view of an image capturing unit according to the third embodiment of the present disclosure; FIG. 6 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 3rd embodiment; FIG. 7 is a schematic view of an image capturing unit according to the 4th embodiment of the present disclosure; FIG. 8 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 4th embodiment; FIG. 9 is a schematic view of an image capturing unit according to the 5th embodiment of the present disclosure; FIG. 10 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 5th embodiment; FIG. 11 is a schematic view of an image capturing unit according to the 6th embodiment of the present disclosure; FIG. 12 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 6th embodiment; FIG. 13 is a schematic view of an image capturing unit according to the 7th embodiment of the present disclosure; FIG. 14 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 7th embodiment; FIG. 15 is a schematic view of an image capturing unit according to the 8th embodiment of the present disclosure; FIG. 16 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 8th embodiment; FIG. 17 is a schematic view of an image capturing unit according to the 9th embodiment of the present disclosure; FIG. 18 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 9th embodiment; FIG. 19 is a schematic view of an image capturing unit according to the 10th embodiment of the present disclosure; FIG. 20 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 10th embodiment; FIG. 21 is a schematic view of an image capturing unit according to the 11th embodiment of the present disclosure; FIG. 22 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 11th embodiment; FIG. 23 is a schematic view of an image capturing unit according to the 12th embodiment of the present disclosure; FIG. 24 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 12th embodiment; FIG. 25 is a perspective view of an image capturing unit according to the 13th embodiment of the present disclosure; FIG. 26 is a perspective view of an electronic device according to the 14th embodiment of the present disclosure; FIG. 27 is another perspective view of the electronic device in FIG. 26 ; FIG. 28 is a perspective view of an electronic device according to the 15th embodiment of the present disclosure; FIG. 29 is another perspective view of the electronic device in FIG. 28 ; FIG. 30 is a block diagram of the electronic device in FIG. 28 ; FIG. 31 is a perspective view of an electronic device according to the 16th embodiment of the present disclosure; FIG. 32 is a perspective view of an electronic device according to the 17th embodiment of the present disclosure; FIG. 33 is a schematic view of inflection points on lens surfaces, critical points on lens surfaces, Yc 71 and Yi 81 according to the 1st embodiment of the present disclosure; FIG. 34 is a schematic view of ET 1, ET 3, ET 6, SAG 1R 2, Y 1R 1, Y 4R 1, Y 5R 2, Y 6R 1, Y 6R 2, Y 7R 1, and Y 8R 2 according to the first embodiment of the present disclosure; FIG. 35 is a schematic view showing a configuration of a light folding member in a detecting optical lens assembly according to an embodiment of the present disclosure; FIG. 36 is a schematic view showing another configuration of a light folding member in a detecting optical lens assembly according to an embodiment of the present disclosure; and FIG. 37 is a schematic view showing a configuration of two light folding elements in a detecting optical lens assembly according to an embodiment of the present disclosure.DETAILED DESCRIPTIONA sensing optical lens assembly includes eight lens elements. The eight lens elements are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element. Each of the eight lens elements has an object-side surface facing the object side and an image-side surface facing the image side.The first lens element may have a negative refractive power. Therefore, it is favorable to form a short focal length of the lens structure so that light from a wide field of view can enter the detecting optical lens assembly to increase the light receiving range, which may be applicable to various applications.The object-side surface of the second lens element may be concave in a triaxial portion thereof. Therefore, it is convenient to control the shape of the object-side surface of the second lens element, thereby attenuating the light from the large field of view and reducing the spherical aberration of the detecting optical lens assembly. The image-side surface of the second lens element may be convex in a triaxial portion thereof. Therefore, it is favorable for preventing light divergence for correcting astigmatism.The fourth lens element may have a positive refractive power. Therefore, it is advantageous to compensate aberrations of the first to third lens elements, thereby converging light to reduce the overall size of the detecting optical lens assembly. The object-side surface of the fourth lens element is convex in a triaxial portion thereof. Therefore, it is advantageous to improve the converging capability of the fourth lens element to effectively correct the spherical aberration of the detecting optical lens assembly. The image-side surface of the fourth lens element may be convex in a triaxial portion thereof. Therefore, it is advantageous to converge light to reduce the length of the detecting optical lens assembly and correct aberrations.The fifth lens element may have a negative refractive power. Therefore, it is favorable to cooperate with the refractive power of the fourth lens element to balance the distribution of the total refractive power of the detecting optical lens assembly and correct aberrations such as the spherical aberration generated by size reduction. The image-side surface of the fifth lens element may be concave in a triaxial portion thereof. Therefore, it is convenient to adjust the emission direction of the light from the fifth lens element, thereby enlarging the image surface.The seventh lens element may have a positive refractive power. Therefore, it is convenient to reduce the length of the detecting optical lens assembly at the end thereof. The object-side surface of the seventh lens element may be convex in a triaxial portion thereof. Therefore, it is preferable to adjust the surface shape and the refractive power of the seventh lens element so as to correct the curvature of field and reduce the back focal length.The eighth lens element may have a negative refractive power. Therefore, it is favorable to effectively control the back focal length to reduce the total path length of the detecting optical lens assembly. The object-side surface of the eighth lens element may be concave in a triaxial portion thereof. Therefore, it is desirable to control the incident angle of the light incident on the object-side surface of the eighth lens element, thereby preventing light divergence and poor relative illuminance at the edge due to too large an incident angle.According to the present disclosure, the object-side surface of the first lens element may have at least one convex shape in an off-axis portion thereof. Therefore, it is favorable to receive peripheral light to obtain image information from a relatively large area.According to the present disclosure, the object-side surface of the seventh lens element has at least one inflection point. Therefore, it is advantageous to reduce the surface reflection of light from the large field of view, to improve the ability to correct aberrations at the edge of the seventh lens element, thereby compensating the converging quality of the light from the large field of view. According to the present disclosure, the object-side surface of the eighth lens element may have at least one inflection point. Therefore, it is preferable to adjust the optical path at the periphery to prevent vignetting at the peripheral image while correcting the curvature of the field and the distortion. Reference is made to FIG. 33, which shows a schematic view of the inflection points P on the object-side surface of the seventh lens element E 7 and the object-side surface of the eighth lens element E 8 according to the first embodiment of the present disclosure. The above-mentioned inflection points P on the object-side surface of the seventh lens element E7 and the object-side surface of the eighth lens element E8, and the image-side surface of the second lens element E2, the object-side surface of the third lens element E3, the object-side surface of the sixth lens element E6, the image-side surface of the sixth lens element E6, the image-side surface of the seventh lens element E7 and the image-side surface of the eighth lens element E8 in FIG. 33 are exemplary. Each of the lens surfaces in various embodiments of the present disclosure may also have one or more inflection points.According to the present disclosure, at least one lens element of the sensing optical lens assembly may be made of glass material. Therefore, it is favorable to increase flexibility in the refractive power configuration of the detecting optical lens assembly and reduce the influence of the ambient temperature on the detecting optical lens assembly. According to the present disclosure, at least two lens elements of the sensing optical lens assembly may be made of plastic material. Therefore, it is convenient to reduce the manufacturing cost and thereby reduce the manufacturing difficulty of aspherical lenses.According to the present disclosure, both the object-side surface and the image-side surface of at least one lens element of the detecting optical lens assembly may be spherical. Therefore, it is advantageous to reduce manufacturing errors. Moreover, at least one lens element of the detecting optical lens assembly may be made of glass material, both the object-side surface and the image-side surface thereof being spherical. Therefore, it is advantageous to effectively increase the mullability and yield and also to increase the life of the applied product.According to the present disclosure, there may be an air gap in a triaxial region between each of the adjacent lens elements of the sensing optical lens assembly; that is, each of the first to eighth lens elements may be a single and uncocked lens element. The cemented lens manufacturing process is more complex than that of non-cemented lenses, particularly when an image-side surface of one lens element and an object-side surface of the following lens element must have precise curvatures to ensure that both lenses are properly cemented. Moreover, these two lens elements may not be well cemented during the cementing process due to misalignment, which negatively affects image quality. Therefore, in the present disclosure, it is preferable to have an air gap in a triaxial region between adjacent lens elements of the detecting optical lens assembly in order to effectively prevent the problems of the cemented lens elements, to increase flexibility in lens design and thus improve image quality.According to the present disclosure, the detecting optical lens assembly may further include an aperture stop. When an axial distance between the object-side surface of the first lens element and the image-side surface of the third lens element is Dr1r6 and an axial distance between the aperture stop and the image-side surface of the eighth lens element is SD, the following condition is satisfied: 1.05<Dr1r6 / SD<2.00. Therefore, it is convenient to control the size at the objective of the detecting optical lens assembly by using the position of the aperture stop, thereby achieving an appropriate balance between the total length of the path and the position of the aperture stop. Moreover, the following condition may also be satisfied: 1.10<Dr1r6 / SD<1.80. Moreover, the following condition may also be satisfied: 1.29≤Dr1r6 / SD≤1.67.When an axial distance between the second lens element and the third lens element is T 23, an axial distance between the third lens element and the fourth lens element is T 34, and an axial distance between the fourth lens element and the fifth lens element is T 45, the following condition may be satisfied: 0.03<(T 23+T 45) / T 34<5.00. Therefore, it is convenient to adjust the configuration of the lens pitch, thereby guiding the light from the large field of view into the image surface. Moreover, the following condition may also be satisfied: 0.05<(T 23+T 45) / T 34<3.80. In addition, the following condition may also be satisfied: 0.05<(T 23+T 45) / T 34<1.50.When an Abbe number of the third lens element is V 3 and a refractive index of the third lens element is N 3, the following condition may be satisfied: 17.00<V3 / N 3<50.00. Therefore, proper material selection of the third lens element is favorable to balance the convergence capabilities between different wavelengths. Moreover, the following condition may also be satisfied: 19.00<V3 / N3<48.00. Moreover, the following condition may also be satisfied: 22.00<V3 / N3<45.00. Moreover, the following condition may also be satisfied: 36.22≤V3 / N3≤38.79.When a radius of curvature of the image-side surface of the first lens element is R2 and a radius of curvature of the image-side surface of the eighth lens element is R16, the following condition may be satisfied: -1.00<R2 / R16<1.30. Therefore, it is favorable to adjust the shape of the surfaces and the refracting powers of the first and eighth lens elements so as to correct astigmatism and curvature of field, thereby improving image quality. Moreover, the following condition may also be satisfied: -0.70<R2 / R16<1.00. Moreover, the following condition may also be satisfied: -0.50<R2 / R16<0.85, Moreover, the following condition may also be satisfied: -0.12≤R2 / R16≤0.57.When a maximum field of view of the detecting optical lens assembly is FOV, the following condition may be satisfied: 130.0 degrees<<200.0 degrees. Therefore, it is favorable to have a relatively wide field of view of the optical lens in order to increase the application range of the product. Moreover, the following condition may also be satisfied: 140.0 degrees<< 195.0 degrees. Moreover, the following condition may also be satisfied: 145.0 degrees<<185.0 degrees. Moreover, the following condition may also be satisfied: 153.8 degrees ≤ FOV ≤ 173.04 degrees.When an axial distance between the image-side surface of the eighth lens element and the image surface is BL and a focal length of the detecting optical lens assembly is f, the following condition may be satisfied: 0.08<BL / f<0.55. Therefore, it is favorable to effectively control the back focal length to prevent an excessively long total length of the path. Moreover, the following condition may also be satisfied: 0.13<BL / f<0.40.When an axial distance between the aperture stop and the image surface is SL and an axial distance between the object-side surface of the first lens element and the image surface is TL, the following condition may be satisfied: 0.25< SL / TL<0.75 Therefore, it is favorable to adjust the position of the aperture stop in cooperation with a lens structure having a wide field of view, thereby increasing the relative illuminance in the peripheral field of view and achieving an appropriate balance between illuminance, depth of view, and image size. Moreover, the following condition may also be satisfied: 0.28< SL / TL<0.62. Moreover, the following condition may also be satisfied: 0.30< SL / TL<0.55.When a central thickness of the second lens element is CT 2 and a central thickness of the eighth lens element is CT 8, the following condition may be satisfied: 2.00<CT 2 / CT 8< 10.00. Therefore, it is preferable to have a sufficient thickness of the second lens element to receive light from the wide field of view into the detecting optical lens assembly. Moreover, the following condition may also be satisfied: 2.30<CT2 / CT8<8.00.When the axial distance between the object-side surface of the first lens element and the image surface is TL, an F-number of the sensing optical lens assembly is Fno, and a maximum image height of the sensing optical lens assembly (which may be half of a diagonal length of an effective photosensitive area of the image sensor) is ImgH, the following condition may be satisfied: 4.80<TL×Fno / ImgH<9.00. Therefore, it is favorable to achieve an appropriate balance among the total length of the path, the illuminance, and the image size. Moreover, the following condition may also be satisfied: 5.70<TL×Fno / ImgH<8.50.When the focal length of the detecting optical lens assembly is f and a composite focal length of the fifth lens element and the sixth lens element is f56, the following condition may be satisfied: -1.50<f / f56<-0.30. Moreover, the following condition may also be satisfied: -1.20<f / f56<-0.35.When a radius of curvature of the object-side surface of the fourth lens element R 7 and a radius of curvature of the image-side surface of the fourth lens element R 8 are, the following condition may be satisfied: -2.00<(R 7+R 8) / (R 7-R 8)<2.00. Therefore, it is favorable to adjust the shape of the fourth lens element so as to correct aberrations caused by incident light from the large field of view and reduce the sensitivity of the detecting optical lens assembly. Moreover, the following condition may also be satisfied: -0.70<(R7+R8) / (R7-R8)<0.70.When the focal length of the detecting optical lens assembly is f, a focal length of the first lens element is f1, a focal length of the fifth lens element is f5, and a focal length of the eighth lens element is f8, the following condition may be satisfied: -2.50<f / f1+f / f5+f / f8<-1.00. Therefore, it is favorable to balance the power distribution of the detecting optical lens assembly under the specifications of a wide field of view and a short total length of the path. Moreover, the following condition may also be satisfied: -2.20<f / f1+f / f5+f / f8<-1.20.When the radius of curvature of the object-side surface of the fourth lens element is R7 and the radius of curvature of the image-side surface of the fourth lens element is R8, the following condition may be satisfied: -4.00<R7 / R8<2.50. In addition, the following condition may also be satisfied: -3.50<R7 / R8<2.00.When a radius of curvature of the object-side surface of the first lens element is R 1 and the radius of curvature of the image-side surface of the eighth lens element is R 16, the following condition may be satisfied: -2.50<R 1 / R 16<5.50. Therefore, it is favorable to adjust the angle of incidence of light into and the angle of emission of light from the detecting optical lens assembly, thereby achieving an appropriate balance between the field of view and the size distribution. Moreover, the following condition may also be satisfied: -2.00<R1 / R16<4.50.When a radius of curvature of the object-side surface of the second lens element is R 3 and a radius of curvature of the image-side surface of the second lens element is R 4, the following condition may be satisfied: 0.10<R 3 / R 4<25.00. Therefore, it is preferable to adjust the lens shape and the refractive power of the second lens element so as to adjust the optical path of the light from the wide field of view. Moreover, the following condition may also be satisfied: 0.25<R3 / R4<15.50.When the focal length of the detecting optical lens assembly is f, a focal length of the second lens element is f2, and a focal length of the third lens element is f3, the following condition may be satisfied: 0.03<|f / f2|+|f / f3|<1.00. Therefore, it is desirable to control the refracting powers of the second and third lens elements so as to balance the convergence and divergence of the incident light with a large field of view, thereby improving the converging quality of the light from different fields of view. Moreover, the following condition may also be satisfied: 0.10<|f / f2|+|f / f3|<0.90.When a displacement parallel to an optical axis is from an axial vertex on the image-side surface of the first lens element to a position of the maximum effective radius on the image-side surface of the first lens element SAG1R2and is a central thickness of the first lens element CT1, the following condition may be satisfied: 1.35< S1R2 / CT1<2.50. Therefore, it is favorable to effectively control the degree of curvature at the periphery of the image-side surface of the first lens element, thereby achieving an appropriate balance between the field of view and the mullability. In addition, the following condition may also be satisfied: 1.40< S1R2 / CT1<2.20. When the direction from the axial apex of one surface to the position of the maximum effective radius of the same surface is directed toward the image side of the detecting optical lens assembly, the value of the displacement is positive; when the direction from the axial apex of the surface to the position of the maximum effective radius of the same surface is directed toward the object side of the detecting optical lens assembly, the value of the displacement is negative.When a maximum effective radius of the object-side surface of the first lens element is Y 1R 1 and a maximum effective radius of the image-side surface of the eighth lens element is Y 8R 2, the following condition may be satisfied: 1.00<Y 1R 1 / Y 8R 2<2.00. Therefore, it is convenient to achieve an appropriate balance between a wide field of view and an enlarged image surface by adjusting the ratio of the effective radii of the first and eighth lens elements. In addition, the following condition may also be satisfied: 1.00<Y1R1 / Y8R2<1.85, refer to FIG. 34 showing a schematic view of Y1R1 and Y8R2 according to the first embodiment of the present disclosure.When a distance parallel to the optical axis is between a position of the maximum effective radius of the object-side surface of the third lens element and a position of the maximum effective radius of the image-side surface of the third lens element ET 3, and a distance parallel to the optical axis is between a position of the maximum effective radius of the object-side surface of the sixth lens element and a position of the maximum effective radius of the image-side surface of the sixth lens element ET 6, the following condition may be satisfied: 1.60<ET 3 / ET 6<5.00. Therefore, it is preferable to control the edge thicknesses of the lens elements so as to improve the mullability. Moreover, the following condition may also be satisfied: 2.00<ET3 / ET6<4.00. Reference is made to FIG. 34 showing a schematic view of ET 3 and ET 6 according to the first embodiment of the present disclosure.When the maximum image height of the detecting optical lens assembly is ImgH, the maximum effective radius of the object-side surface of the first lens element is Y1R1, and a maximum effective radius of the object-side surface of the fourth lens element is Y4R1, the following condition may be satisfied: 4.50<ImgH / Y4R1+Y1R1 / Y4R1<16.00. Therefore, it is favorable to reduce the overall size of the capturing optical lens assembly under the specifications of a relatively wide field of view in photography and a relatively large image area, and at the same time, to increase the flexibility of the configuration of the mechanism space. In addition, the following condition may also be satisfied: 6.00< ImH / Y4R1+Y1R1 / Y4R1<14.50.When the focal length of the fifth lens element is f5 and the focal length of the eighth lens element is f8, the following condition may be satisfied: -1.0<f5 / f8<3.00. Therefore, it is convenient to adjust the configuration of the refractive power of the fifth and eighth lens elements so as to correct aberrations and astigmatism and adjust the field of view. Moreover, the following condition may also be satisfied: -0.5<f5 / f8<2.80. Moreover, the following condition may also be satisfied: 0.00<f5 / f8<2.50.When the radius of curvature of the image-side surface of the second lens element is R 4 and a radius of curvature of the object-side surface of the eighth lens element is R 15, the following condition may be satisfied: -1.00<R 15 / R 4<20.00. Therefore, it is preferable to make the radii of curvature of the second and eighth lens elements cooperate to correct distortions and field curvatures. Moreover, the following condition may also be satisfied: 0.00<R15 / R4<15.00.When the focal length of the detecting optical lens assembly is f and a focal length of the sixth lens element is f6, the following condition may be satisfied: -0.50<f / f6<0.30. therefore, it is favorable to use the sixth lens element as a correction lens element, thereby improving the contrast and recognizability of the image and thus improving the image quality. Moreover, the following condition may also be satisfied: -0.30<f / f6<0.20.When the radius of curvature of the object-side surface of the eighth lens element is R15 and the radius of curvature of the image-side surface of the eighth lens element is R16, the following condition may be satisfied: -7.50<(R15+R16) / (R15-R16)<1.50. Moreover, the following condition may also be satisfied: -5.60<(R15+R16) / (R15-R16)<1.00. Moreover, the following condition may also be satisfied: -3.10<(R15+R16) / (R15-R16)<0.80.When the central thickness of the second lens element is CT 2, a central thickness of the third lens element is CT 3, a central thickness of the fourth lens element is CT 4, a central thickness of the fifth lens element is CT 5, a central thickness of the sixth lens element is CT 6, a central thickness of the seventh lens element is CT 7, and the central thickness of the eighth lens element is CT 8, the following condition may be satisfied: 0.70<(CT2+CT3) / (CT4+CT5+CT6+CT7+CT8)<1.80. Therefore, it is favorable to adjust the lens distribution so as to form a miniaturized lens structure having a wide field of view, thereby satisfying various product applications. Moreover, the following condition may also be satisfied: 0.82<(CT2+CT3) / (CT4+CT5+CT6+CT7+CT8)<1.70.When the radius of curvature of the image-side surface of the first lens element is R 2 and a radius of curvature of the object-side surface of the seventh lens element is R 13, the following condition may be satisfied: -0.10<R 2 / R 13<2.00. Therefore, it is preferable to make the radii of curvature of the image-side surface of the first lens element and the object-side surface of the seventh lens element cooperate, thereby harmonizing the optical path and correcting astigmatism and chromatic aberration. Moreover, the following condition may also be satisfied: 0.15<R2 / R13<1.80.When the maximum image height of the detecting optical lens assembly is ImgH and an axial distance between the object-side surface of the first lens element and the image-side surface of the eighth lens element is TD, the following condition may be satisfied: 0.50<2×ImgH / TD<1.10. In addition, the following condition may also be satisfied: 0.56<2×ImgH / TD<1.00.When a maximum effective radius of the image-side surface of the fifth lens element is Y 5R 2, a maximum effective radius of the object-side surface of the sixth lens element is Y 6R 1, a maximum effective radius of the image-side surface of the sixth lens element is Y 6R 2, and a maximum effective radius of the object-side surface of the seventh lens element is Y 7R 1, the following condition may be satisfied: 2.30<Y 7R 1 / Y 6R 2+Y 6R 1 / Y 5R 2<4.00. Therefore, it is convenient to reduce the overall size of the detecting optical lens assembly under the specifications of a wide field of view. In addition, the following condition may also be satisfied: 2.50<Y7R1 / Y6R2+Y6R1 / Y5R2<3.20.When a vertical distance between an off-axis critical point closest to an optical axis is on the object-side surface of the seventh lens element and the optical axis is Yc 71 and the vertical distance between an inflection point closest to the optical axis is on the object-side surface of the eighth lens element and the optical axis is Yi 81, the following condition may be satisfied: 0.65<Yc 71 / Yi 81<1.40. Therefore, it is favorable to cooperate the seventh and eighth lens elements to adjust the angle of reflection of the light in the edge region, thereby improving the image quality of the light from the wide field of view and increasing the response efficiency of the image sensor. Reference is made to FIG. 33, which shows a schematic view of Yc 71 and Yi 81 according to the first embodiment of the present disclosure. The above-mentioned critical point C on the object-side surface of the seventh lens element E7 and the critical points C on the object-side surface of the third lens element E3, the object-side surface of the sixth lens element E6, the image-side surface of the sixth lens element E6, the image-side surface of the seventh lens element E7 and the image-side surface of the eighth lens element E8 in FIG. 33 are exemplary. Each of the lens surfaces in various embodiments of the present disclosure may also have one or more critical points in an off-axis region thereof.When a distance parallel to the optical axis is between a position of the maximum effective radius of the object-side surface of the first lens element and a position of the maximum effective radius of the image-side surface of the first lens element ET 1 and the central thickness of the first lens element CT 1, the following condition may be satisfied: 1.10<ET 1 / CT 1<2.20. Reference is made to FIG. 34 showing a schematic view of ET 1 according to the first embodiment of the present disclosure.According to the present disclosure, the above features and conditions may be used in various combinations to achieve respective effects.According to the present disclosure, the lens elements of the sensing optical lens assembly may be made of either glass or plastic material. When the lens elements are made of glass material, the refractive power distribution of the sensing optical lens assembly can be more flexible and the influence on imaging caused by temperature changes of the external environment can be reduced. The glass lens element may be formed by either grinding or molding. If the lens elements are made of plastic material, the manufacturing cost can be effectively reduced. Moreover, the surfaces of each lens element may be spherical or aspherical. Spherical lens elements are easy to manufacture. The design of aspherical lens elements allows more control variables to eliminate aberrations and reduce the required number of lens elements, so that the total path length of the detecting optical lens assembly can be effectively shortened. Moreover, the aspherical surfaces can be produced by plastic injection molding or glass molding.According to the present disclosure, an aspherical lens surface means that the lens surface has an aspherical shape over the entire optically effective region thereof or a part thereof.According to the present disclosure, one or more of the materials of the lens elements may optionally include an additive that generates light absorption and interference effects and changes the transmittance of the lens elements in a particular wavelength range to reduce unwanted stray light or color variations. For example, the additive may optionally filter out light in the wavelength range of 600 nm to 800 nm to reduce excessive red light and / or near infrared light; or optionally filter out light in the wavelength range of 350 nm to 450 nm to prevent excessive blue light and / or near ultraviolet light from disturbing the final image. The additive may be homogeneously mixed with a plastic material used in the manufacture of a lens element of mixed material by injection molding. Moreover, the additive may be applied to the lens surfaces to achieve the above-mentioned effects.According to the present disclosure, each of an object-side surface and an image-side surface has a perpendicular region and an off-axis region. The triaxial region refers to the region of the surface where light rays move close to the optical axis, and the off-axis region refers to the region of the surface that is away from the multiaxial region.In particular, unless otherwise stated, this means that the surface in the triaxial region thereof is convex when the lens element has a convex surface; if the lens element has a concave surface, this means that it is concave in the multiaxial region thereof. Moreover, when a range of the refractive power or focus of a lens element is not defined, it means that the range of the refractive power or focus of the lens element is in the triaxial region thereof.According to the present disclosure, an inflection point is a point on the surface of the lens element at which the surface changes from concave to convex, or vice versa. A critical point is an off-axis point of the lens surface at which its tangent is perpendicular to the optical axis.According to the present disclosure, the image surface of the sensing optical lens assembly based on the corresponding image sensor may be flat or curved, in particular, a curved surface may be concave and directed toward the object side of the sensing optical lens assembly.According to the present disclosure, an image correction unit such as an image field beam may optionally be disposed between the lens element closest to the image side of the detecting optical lens assembly along the optical path and the image surface for correcting aberrations such as curvature of an image field. The optical properties of the image correction unit, such as curvature, thickness, refractive index, position and shape of the surface (convex or concave surface with spherical, aspherical, diffractive or Fresnel types), can be adjusted according to the design of the image acquisition unit. In general, a preferred image correction unit is, for example, a thin transparent member having a concave object-side surface and a planar image-side surface, the thin transparent member being disposed in the vicinity of the image surface.According to the present disclosure, at least one light folding element such as a prism or a mirror whose surface may be planar, spherical, aspherical, or free-form may be optionally disposed between an imaged object and the image surface on the imaging optical path, so that the capturing optical lens assembly may be more flexible in spatial arrangement and therefore the dimensions of an electronic device are not limited by the total path length of the capturing optical lens assembly. More specifically, reference is made to FIGS. 35 and 36. FIG. 35 is a schematic view showing a configuration of a light folding member in a sensing optical lens assembly according to an embodiment of the present disclosure, and FIG. 36 is a schematic view showing another configuration of a light folding member in a sensing optical lens assembly according to an embodiment of the present disclosure. In FIGS. 35 and 36, the detecting optical lens assembly may include, in order from an imaged object (not illustrated in the figures) to an image surface IMG along an optical path, a first optical axis OA 1, a light folding element LF, and a second optical axis OA 2. The light folding element LF may be disposed between the imaged object and a lens group LG of the detecting optical lens assembly as shown in FIG. 35, or may be disposed between a lens group LG of the detecting optical lens assembly and the image surface IMG as shown in FIG. 36. Further, reference is made to FIG. 37 which is a schematic view of a configuration having two light folding elements in a detecting optical lens assembly according to an embodiment of the present disclosure. In FIG. 37, the detecting optical lens assembly may include, in order from an imaged object (not illustrated in the figure) to an image surface IMG along a light path, a first optical axis OA 1, a first light folding element LF 1, a second optical axis OA 2, a second light folding element LF 2, and a third optical axis OA 3. The first light folding element LF 1 is disposed between the imaged object and a lens group LG of the detecting optical lens assembly, the second light folding element LF 2 is disposed between the lens group LG of the detecting optical lens assembly and the image surface IMG, and the propagation direction of the light on the first optical axis OA 1 may be the same direction as the propagation direction of the light on the third optical axis OA 3 as illustrated in FIG. 37. The sensing optical lens assembly may optionally be provided with three or more light folding elements, and the present disclosure is not limited to the type, number, and position of the light folding elements of the embodiments disclosed in the above figures.According to the present disclosure, the sensing optical lens assembly may include at least one aperture, such as an aperture stop, a blend stop, or a field stop. The aperture or the field aperture is set to eliminate stray light and thereby improve the image quality.According to the present disclosure, an aperture diaphragm may be configured as a front diaphragm or as a middle diaphragm. A front stop disposed between an imaged object and the first lens element may provide a greater distance between an exit pupil of the sensing optical lens assembly and the image surface to produce a telecentric effect, thereby improving image sensor efficiency of an image sensor (e.g., CCD or CMOS). A central aperture disposed between the first lens element and the image surface is beneficial in increasing the viewing angle of the sensing optical lens assembly, thereby providing a wider field of view for the same.According to the present disclosure, the detecting optical lens assembly may include an aperture control unit. The aperture control unit may be a mechanical component or a light modulator that can control the size and shape of the aperture by electricity or electrical signals. The mechanical component may include a movable member such as a louver array or a light shielding film. The light modulator may include a shielding member such as a filter, an electrochromic material, or a liquid crystal layer. The aperture control unit controls the amount of incident light or the exposure time to improve the possibility of image quality adjustment. Moreover, the aperture control unit may be the aperture stop of the present disclosure that changes the F-number to achieve different image effects, such as depth of field or light intensity of the objective.According to the present disclosure, the detecting optical lens assembly may include one or more optical elements for limiting the shape of light passing through the detecting optical lens assembly. Each optical element may be, but need not be, a filter, a polarizer, etc., and each optical element may be, but need not be, a one-piece element, a composite component, a thin film, etc. The optical element may be located on the object side or the image side of the detecting optical lens assembly or between any two adjacent lens elements to transmit light in a certain shape, thereby satisfying the application requirements.According to the present disclosure, the detecting optical lens assembly may include at least one optical lens element, an optical element, or a carrier having at least one surface with a low-reflection layer. The low-reflection layer can effectively reduce stray light generated by light reflection at the interface. The low-reflection layer may be arranged in an optically non-effective region of an object-side surface or an image-side surface of the optical lens element or a connection surface between the object-side surface and the image-side surface. The optical element may be a light blocking element, an annular spacer, a tube element, a cover glass, a blue glass, a filter, a color filter, an optical path folding element, a prism, a mirror, etc. The carrier may be a base for supporting a lens assembly, a microlens disposed on an image sensor, a substrate surrounding the image sensor, a glass plate for protecting the image sensor, etc.According to the present disclosure, the object side and the image side are defined in accordance with the optical axis direction, and the axial optical data is calculated along the optical axis. In addition, when the optical axis is folded by a light folding element, the axial optical data is also calculated along the folded optical axis.In accordance with the above description of the present disclosure, the following specific embodiments are provided for further explanation.1. EmbodimentFIG. 1 is a schematic view of an image capturing unit according to the 1st embodiment of the present disclosure. FIG. 2 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the first embodiment. In FIG. 1, the image capturing unit 1 includes the capturing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The detecting optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element E1, a second lens element E2, a diaphragm S1, a third lens element E3, an aperture diaphragm ST, a fourth lens element E4, a diaphragm S2, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9, and an image surface IMG. The sensing optical lens assembly includes eight lens elements (E1, E2, E3, E4, E5, E6, E7 and E8), with no additional lens element being disposed between each of the adjacent eight lens elements. Between each of the adjacent lens elements of the eight lens elements of the sensing optical lens assembly, there is an air gap in a triaxial region.The first lens element E1 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface, both of which are spherical.The second lens element E2 having positive refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The second lens element E2 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The image-side surface of the second lens element E2 has an inflection point.The third lens element E3 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The third lens element E3 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the third lens element E 3 has an inflection point. The object-side surface of the third lens element E3 has a critical point in an off-axis region thereof.The fourth lens element E4 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The fourth lens element E4 is made of glass material and has an object-side surface and an image-side surface both aspherical.The fifth lens element E5 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The fifth lens element E5 is made of plastic and has an object-side surface and an image-side surface both aspherical.The sixth lens element E6 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The sixth lens element E6 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has an inflection point. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis portion thereof.The seventh lens element E7 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The seventh lens element E7 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The image-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof. The image-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.The eighth lens element E8 having negative refractive power has a concave object-side surface in a triaxial portion thereof and a concave image-side surface in a multiaxial portion thereof. The eighth lens element E8 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the eighth lens element E8 has two inflection points. The image-side surface of the eighth lens element E8 has three inflection points. The image-side surface of the eighth lens element E8 has a critical point in an off-axis portion thereof.The filter E9 is made of glass material and is located between the eighth lens element E8 and the image surface IMG. It has no influence on the focal length of the detecting optical lens assembly. The image sensor IS is disposed on or near the image surface IMG of the sensing optical lens assembly.The equation of the aspherical surface profiles of the above-mentioned lens elements of the first embodiment is expressed as follows: wherein X is the displacement parallel to an optical axis from an axial apex on the aspherical surface to a point at a distance Y from the optical axis on the aspherical surface; Y is the vertical distance from the point on the aspherical surface to the optical axis; R is the radius of curvature; k is the conic coefficient; and Ai is the ith aspherical coefficient, and in the embodiments i may be 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, and 28, but is not limited thereto.In the capturing optical lens assembly of the image capturing unit 1 according to the first embodiment, when a focal length of the capturing optical lens assembly is f, an F-number of the capturing optical lens assembly is Fno, and half of a maximum field of view of the capturing optical lens assembly is HFOV, these parameters have the following values: f=3.71 millimeters (mm), Fno=2.75, HFOV=80.5 degrees.When the maximum field of view of the detecting optical lens assembly is FOV, the following condition is satisfied: FOV=161.0 degrees.When an axial distance between the object-side surface of the first lens element E 1 and the image surface IMG is TL, the F-number of the detecting optical lens assembly is Fno, and a maximum image height of the detecting optical lens assembly is ImgH, the following condition is satisfied: TL×Fno / ImgH=8.16.When the maximum image height of the detecting optical lens assembly is ImgH and an axial distance between the object-side surface of the first lens element E 1 and the image-side surface of the eighth lens element E 8 is TD, the following condition is satisfied: 2×ImgH / TD=0.71.When an axial distance between the image-side surface of the eighth lens element E8 and the image surface IMG is BL and the focal length of the detecting optical lens assembly is f, the following condition is satisfied: BL / f=0.25.When the focal length of the detecting optical lens assembly is f and a focal length of the sixth lens element E6 is f6, the following condition is satisfied: f / f6 = -0.10.When a focal length of the fifth lens element E5 is f5 and a focal length of the eighth lens element E8 is f8, the following condition is satisfied: f5 / f8=0.78.When the focal length of the detecting optical lens assembly is f and the composite focal length of the fifth lens element E5 and the sixth lens element E6 is f56, the following condition is satisfied: f / f56 = -0.82.When the focal length of the detecting optical lens assembly is f, a focal length of the second lens element E2 is f2, and a focal length of the third lens element E3 is f3, the following condition is satisfied: |f / f2|+|f / f3|=0.45.When the focal length of the detecting optical lens assembly is f, a focal length of the first lens element E1 is f1, the focal length of the fifth lens element E5 is f5, and the focal length of the eighth lens element E8 is f8, the following condition is satisfied: f / f1+f / f5+f / f8 = -1.72.When an axial distance between the aperture stop ST and the image surface IMG is SL and the axial distance between the object-side surface of the first lens element E1 and the image surface IMG is TL, the following condition is satisfied: SL / TL=0.39.When an axial distance between the object-side surface of the first lens element E1 and the image-side surface of the third lens element E3 is Dr1r6 and an axial distance between the aperture stop ST and the image-side surface of the eighth lens element E8 is SD, the following condition is satisfied: Dr1r6 / SD = 1.65.When a central thickness of the second lens element E 2 is CT 2 and a central thickness of the eighth lens element E 8 is CT 8, the following condition is satisfied: CT 2 / CT 8=5.21.When an axial distance between the second lens element E 2 and the third lens element E 3 is T 23, an axial distance between the third lens element E 3 and the fourth lens element E 4 is T 34, and an axial distance between the fourth lens element E 4 and the fifth lens element E 5 is T 45, the following condition is satisfied: (T 23+T 45) / T 34=0.12.When the central thickness of the second lens element E2 is CT2, a central thickness of the third lens element E3 is CT3, a central thickness of the fourth lens element E4 is CT4, a central thickness of the fifth lens element E5 is CT5, a central thickness of the sixth lens element E6 is CT6, a central thickness of the seventh lens element E7 is CT7, and the central thickness of the eighth lens element E8 is CT8, the following condition is satisfied: (CT2+CT3) / (CT4+CT5+CT6+CT7+CT8 )=1.40.When a radius of curvature of the object-side surface of the first lens element E1 is R1 and a radius of curvature of the image-side surface of the eighth lens element E8 is R16, the following condition is satisfied: R1 / R16=0.02.When a radius of curvature of the image-side surface of the first lens element E1 is R2 and the radius of curvature of the image-side surface of the eighth lens element E8 is R16, the following condition is satisfied: R2 / R16=0.01.When the radius of curvature of the image-side surface of the first lens element E1 is R2 and a radius of curvature of the object-side surface of the seventh lens element E7 is R13, the following condition is satisfied: R2 / R13=0.96.When a radius of curvature of the object-side surface of the second lens element E2 is R3 and a radius of curvature of the image-side surface of the second lens element E2 is R4, the following condition is satisfied: R3 / R4=3.36.When the radius of curvature of the image-side surface of the second lens element E2 is R4 and a radius of curvature of the object-side surface of the eighth lens element E8 is R15, the following condition is satisfied: R15 / R4=0.54.When a radius of curvature of the object-side surface of the fourth lens element E4 is R7 and a radius of curvature of the image-side surface of the fourth lens element E4 is R8, the following condition is satisfied: R7 / R8 = -0.60.When the radius of curvature of the object-side surface of the fourth lens element E4 is R7 and the radius of curvature of the image-side surface of the fourth lens element E4 is R8, the following condition is satisfied: (R7 + R8) / (R7 -R8) = -0.25.When the radius of curvature of the object-side surface of the eighth lens element E8 is R15 and the radius of curvature of the image-side surface of the eighth lens element E8 is R16, the following condition is satisfied: (R15+R16) / (R15-R16) = -0.99.When an Abbe number of the third lens element E 3 is V 3 and a refractive index of the third lens element E 3 is N 3, the following condition is satisfied: V 3 / N 3=37.23.When a distance parallel to the optical axis between a position of the maximum effective radius of the object-side surface of the first lens element E 1 and a position of the maximum effective radius of the image-side surface of the first lens element E 1 is ET 1 and a central thickness of the first lens element E 1 is CT 1, the following condition is satisfied: ET 1 / CT 1=1.46.When a distance parallel to the optical axis between a position of the maximum effective radius of the object-side surface of the third lens element E 3 and a position of the maximum effective radius of the image-side surface of the third lens element E 3 is ET 3, and a distance parallel to the optical axis between a position of the maximum effective radius of the object-side surface of the sixth lens element E 6 and a position of the maximum effective radius of the image-side surface of the sixth lens element E 6 is ET 6, the following condition is satisfied: ET 3 / ET 6=3.76.When a displacement parallel to the optical axis from an axial vertex on the image-side surface of the first lens element E 1 to a position of the maximum effective radius on the image-side surface of the first lens element E 1 is SAG 1R 2, and the central thickness of the first lens element E 1 is CT 1, the following condition is satisfied: SAG 1R 2 / CT 1=2.00. In this embodiment, the direction of SAG1R2 is directed toward the image side of the detecting optical lens assembly, so that the value of SAG1R2 is positive.When a vertical distance between an off-axis critical point closest to the optical axis on the object-side surface of the seventh lens element E 7 and the optical axis is Yc 71 and a vertical distance between an inflection point closest to the optical axis on the object-side surface of the eighth lens element E 8 and the optical axis is Yi 81, the following condition is satisfied: Yc 71 / Yi 81=0.85.When the maximum image height of the detecting optical lens assembly is ImgH, a maximum effective radius of the object-side surface of the first lens element E1 is Y1R1, and a maximum effective radius of the object-side surface of the fourth lens element E4 is Y4R1, the following condition is satisfied: ImgH / Y4R1+Y1R1 / Y4R1= 11.19.When the maximum effective radius of the object-side surface of the first lens element E1 is Y1R1 and a maximum effective radius of the image-side surface of the eighth lens element E8 is Y8R2, the following condition is satisfied: Y1R1 / Y8R2= 1.41.When a maximum effective radius of the image-side surface of the fifth lens element E5 is Y5R2, a maximum effective radius of the object-side surface of the sixth lens element E6 is Y6R1, a maximum effective radius of the image-side surface of the sixth lens element E6 is Y6R2, and a maximum effective radius of the object-side surface of the seventh lens element E7 is Y7R1, the following condition is satisfied: Y7R1 / Y6R2+Y6R1 / Y5R2=2.84.The detailed optical data of the first embodiment are listed in Table 1A and the aspherical surface data in Table 1B below.Surface # #Radius of curvatureThickness: ThicknessMaterialIndex indexAbbe #Focal length0ObjectInfinityInfinity1Lens 112,3529(SPH)1,438Glass Glass1,80 446,6-7,2823,7656(SPH)3,7063Lens 2-26,8633(ASP)2,500Plastic is a plastic material1,58 728,318,464-7,9898(ASP)-0,3005Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,3356Lens 319,3644(ASP)2,075Plastic is a plastic material1,51 556,414,777-12,0855(ASP)0,8568Aperture DiaphragmPlano-0,1269Lens 43,7467(ASP)0,959Glass Glass1,58 961,34,1310-6,2937(ASP)-0,02411Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,08012Lens 5- 298,4475(ASP)0,370Plastic is a plastic material1,64 222,5-5,44133,5342(ASP)1,04114Lens 67,6821(ASP)0,483Plastic is a plastic material1,51 156,8-37,25155,3563(ASP)0,48616Lens 73,9055(ASP)0,973Plastic is a plastic material1,51 556,48,711727,4682(ASP)1,19218Lens 8-4,3047(ASP)0,480Plastic is a plastic material1,61 426,0-6,9719655,4657(ASP)0,60020FilterPlano0,210Glass Glass1,51 764,2-21Plano0,11722Image ImagePlano-Note: The reference wavelength is 587.6 nm (d-line).The effective radius of the aperture S1 (surface 5) is 2.808 mm.The effective radius of the aperture S2 (surface 11) is 1.338 mm.Surface # #3467k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-2,54369114E-033,49193090E-033,05563258E-04-1,46944656E-02A6 =4,0628226E-05-6,53169243E-04-3,15170051 E-042,36730098E-03A8 =2,37351930E-065,37586154E-05-4,30147283E-042,58679576E-04A10 = =-1,36639939E-061,64721500E-052,85588358E-04-4,91761183E-04A12 =-6,9787344E-09-7,50266867E-06-1,07881362E-042.57181748E-04A14 =2,23213463E-081,59475212E-062,73131341E-05-8,20274801 E-05A16 =-1,46134756E-09-1,83330596E-07-4,54590482E-061,68620682E-05A18=1,19195438E-119,63560811E-094,71702296E-07-2,15867217E-06A20 =6,73734002E-136,71282135E-12-2,74967352E-081,5552855E-07A22 =--1,52371305E-116,83953532E-10-4,77558085E-09Surface # #9101213k = k0.00000E+000.00000E+000.00000E+00-1,20729E+01A4 =-1,3665464E-02-4,73476291E-03-2,55933895E-029.90621100E-03A6 =2,65335914E-032,28052825E-032,43472158E-02-4,41266683E-04A8 =-2,45274753E-03-2,94056170E-03-3,89039586E-024,611909336E-04A10 = =1,41771667E-031,19416069E-035,79156332E-02-1,56603319E-03A12 =-4,20210860E-04-3,67902780E-04-6,22489629E-021,43418909E-03A14 =--4,36058878E-02-6,79681670E-04A16 =---1,89522801E-021,64757000E-04A18=--4,62284986E-03-1,60402386E-05A20 =---4,82915199E-04-Surface # #14151617k = k0.00000E+000.00000E+00-8,56982E-010.00000E+00A4 =-3,79341311E-02-7,23322304E-02-4,0416647E-02-3,80207254E-03A6 =3,62477081E-025,33389828E-022,18077451E-023,82605915E-03A8 =-3,53056135E-02-3,81091100E-02-9,90875705E-031,22123226E-03A10 = =2,63868135E-022,07042935E-022,89532165E-03-1,85583672E-03A12 =-1,41376610E-02-8 07775410E-03-5,65717184E-047,76142742E-04A14 =5,32062990E-032,23701791E-037.54716843E-05-1,84295455E-04A16 =-1,38781617E-03-4,36091048E-04-6,95483538E-062,85453027E-05A18=2,45140680E-045,90274204E-054,44979650E-07-3,02271090E-06A20 =-2,79673327E-05-5,405073073E-06-1,96338412E-082,20969775E-07A22 =1,86001797E-063,18321014E-075,79393746E-10-1,09707260E-08A24 =-5,48031787E-08-1,08537608E-08-1,04865783E-113,52903349E-10A26 =-1,62495369E-108,93786399E-14-6,62670088E-12A28 =---5,50828368E-14Surface # #1819k = k-8,30453E-010.00000E+00A4 =1,02975763E-021,22341906E-02A6 =-1,01637028E-02-1,17682374E-02A8 =7,00813516E-035,36372887E-03A10 = =-2,6976485E-03-1,53504467E-03A12 =6,26037647E-042,86021091 E-04A14 =-9,39758185E-05-3,605811813E-05A16 =9,53833927E-063,1536947E-06A18=-6,68950042E-07-1,93343974E-07A20 =3,25030588E-088,27481667E-09A22 =-1,07515314E-09-2,41962326E-10A24 =2,31176022E-114,60378927E-12A26 =-2,91458095E-13-5,13324283E-14A28 =1,63560059E-152,54337948E-16In Table 1A, the radius of curvature, thickness and focal length are given in millimeters (mm). The surface numbers 0-22 represent the surfaces sequentially arranged from the object side to the image side along the optical axis. In Table 1B, k represents the conic coefficient of the aspherical surface profile equation. A4-A28 represent the aspherical coefficients ranging from 4th to 28th order. The tables shown below for each embodiment are the corresponding schematic parameter and aberration curves, and the definitions of the tables are the same as in Table 1A and Table 1B of the first embodiment. Therefore, no further explanation will be given in this respect.2. EmbodimentFIG. 3 is a schematic view of an image capturing unit according to the second embodiment of the present disclosure. FIG. 4 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 2nd embodiment. In FIG. 3, the image capturing unit 2 includes the capturing optical lens assembly (its reference calibration is omitted) of the present disclosure and an image sensor IS. The detecting optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element E1, a second lens element E2, a diaphragm S1, a third lens element E3, an aperture diaphragm ST, a fourth lens element E4, a diaphragm S2, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9, and an image surface IMG. The sensing optical lens assembly includes eight lens elements (E1, E2, E3, E4, E5, E6, E7 and E8), with no additional lens element being disposed between each of the adjacent eight lens elements. Between each of the adjacent lens elements of the eight lens elements of the sensing optical lens assembly, there is an air gap in a triaxial region.The first lens element E1 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface, both of which are spherical.The second lens element E2 having positive refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The second lens element E2 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical.The third lens element E3 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The third lens element E3 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the third lens element E 3 has an inflection point. The image-side surface of the third lens element E3 has two inflection points.The fourth lens element E4 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The fourth lens element E4 is made of glass material and has an object-side surface and an image-side surface both aspherical.The fifth lens element E5 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The fifth lens element E5 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The image-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.The sixth lens element E6 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The sixth lens element E6 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has three inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis portion thereof.The seventh lens element E7 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The seventh lens element E7 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The image-side surface of the seventh lens element E7 has an inflection point. The object-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof. The image-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.The eighth lens element E8 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The eighth lens element E8 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the eighth lens element E8 has two inflection points. The image-side surface of the eighth lens element E8 has three inflection points. The image-side surface of the eighth lens element E8 has a critical point in an off-axis portion thereof.The filter E9 is made of glass material and is located between the eighth lens element E8 and the image surface IMG. It has no influence on the focal length of the detecting optical lens assembly. The image sensor IS is disposed on or near the image surface IMG of the sensing optical lens assembly.The detailed optical data of the second embodiment are shown in Table 2A and the aspherical surface data in Table 2B below.Surface # #Radius of curvatureThickness: ThicknessMaterialIndex indexAbbe #Focal length0ObjectInfinityInfinity1Lens 115,1394(SPH)1,351Glass Glass1,80446,6-7,1624,0034(SPH)3,6793Lens 2-9,5455(ASP)2,600Plastic is a plastic material1,61425,646,924-7,9113(ASP)-0,3855Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,4206Lens 33,7935(ASP)2,344Plastic is a plastic material1,54456,08,65715,3154(ASP)0,2248Aperture DiaphragmPlano0,0829Lens 47,3313(ASP)1,004Glass Glass1,58961,24,5510-4,0071(ASP)-0,14111Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,17612Lens 592,0513(ASP)0,400Plastic is a plastic material1,6620,4-5,95133,7577(ASP)0,69814Lens 611,9287(ASP)0,600Plastic is a plastic material1,54456,0-28,10156,5815(ASP)0,49816Lens 74,2067(ASP)1,049Plastic is a plastic material1,54456,010,491714,5776(ASP)1,03418Lens 8-12,3030(ASP)0,600Plastic is a plastic material1,63923,5-9,101911,2120(ASP)0,60020FilterPlano0,210Glass Glass1,51764,2-21Plano0,33222Image ImagePlano-Note: The reference wavelength is 587.6 nm (d-line).The effective radius of the aperture S1 (surface 5) is 3.044 mm.The effective radius of the aperture S2 (surface 11) is 1.518 mm.Surface # #3467k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-7,00873584E-04-1,280611004E-03-4,49796472E-03-1,4080579E-02A6 =-9,6581877E-054,58962002E-041,62256470E-03-9,24075429E-03A8 =3,7641683E-05-1,24664435E-04-2,19493944E-032,85603023E-02A10 = =-8,17468429E-061,72438079E-051,66406068E-03-4,53223696E-02A12 =1,13687144E-06-9,18761860E-07-8,31435744E-044,59190302E-02A14 =-1,09315002E-07-7,51800053E-082,66232642E-04-2,894365440E-02A16 =6,94361571E-091,64860671E-08-5,44614800E-051,07397633E-02A18=-2,54539983E-10-1,17261860E-096,89392889E-06-1,92077043E-03A20 =4,00901593E-123,74316243E-11-4,90870173E-071,45345552E-05A22 =--4,08036412E-131,49837854E-083,23441972E-05Surface # #9101213k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-1,40439467E-027,41417061E-03-1,72856865E-02-2,75754829E-02A6 =5,89758590E-05-2,1887664E-02-1,36056092E-021,44856025E-02A8 =1,72619114E-031,69629062E-021,74655563E-02-1,27517936E-02A10 = =-5,95519089E-04-7,84568443E-03-2,25849601E-028,59333168E-03A12 =2,08299212E-041,95683984E-032,21941300E-02-4,00608714E-03A14 =--1,99175700E-04-1,44154945E-021,21342877E-03A16 =--5,59443639E-03-2,25515188E-04A18=---1,17334610E-032,31037898E-05A20 =--1.01308612E-04-9,87273136E-07Surface # #14151617k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-3,0566469E-02-5,11081755E-02-3,39248502E-02-1,50878518E-02A6 =2,3792670E-023,04497399E-021,45212437E-026,11442873E-03A8 =-2,11578183E-02-1,79179620E-02-5,65606657E-03-1,25489998E-03A10 = =1,51428684E-027.94125945E-031,6167689E-036,11069357E-05A12 =-7,79023502E-03-2,44876527E-03-3,45566021E-043.18505400E-05A14 =2,82245830E-035,04744016E-045,58280238E-05-8,97438136E-06A16 =-7,12555911E-04-6,38770127E-05-6,77993183E-061,22265225E-06A18=1,2256537E-043,45378571E-066,04498130E-07-1,03838929E-07A20 =-1,36866385E-052,613066664E-07-3,80058364E-085,82014385E-09A22 =8,94213995E-07-5,98274709E-081,58040786E-09-2,153475118E-10A24 =-2,59407807E-084,12289281E-09-3,87140300E-115,04754384E-12A26 =--1,06040027E-104,20551089E-13-6,75158444E-14A28 =---3,88692412E-16Surface # #1819k = k0.00000E+000.00000E+00A4 =-2,98468263E-02-2,64735080E-02A6 =8,3967397E-037.56534990E-03A8 =-7,88098875E-04-1,6040911E-03A10 = =-2,60462536E-042,35272874E-04A12 =1,15014583E-04-2,50833243E-05A14 =-2,16191758E-052,11116890E-06A16 =2,45597125E-06-1,48331519E-07A18=-1,83390050E-078,49178210E-09A20 =9,23078286E-09-3,67228852E-10A22 =-3,11056057E-101,10978574E-11A24 =6,73853529,E-12-2,16590938E-13A26 =-8,49279990E-142,42213997E-15A28 =4,73575051E-16-1,16490081E-17In the 2nd embodiment, the equation of aspherical surface profiles of the above lens elements is the same as the equation of the first embodiment. Also, the definitions of these parameters shown in Table 2C are the same as those given in the first embodiment with corresponding values for the 2nd embodiment, so no further explanation is given in this respect.In addition, these parameters can be calculated from Table 2A and Table 2B as the following values, and satisfy the following conditions:f [mm]3,86R1 / R161,35Fno2,65R2 / R160,36HFOV [grade]80,2R2 / R130,95FOV [Grade]160,4R3 / R41,21TLxFno / ImgH7,52R15 / R41,562xImgH / TD0,76R7 / R8-1,83BL / f0,30(R7+R8) / (R7-R8)0,29f / f6-0,14(R15+R16) / (R15-R16)0,05f5 / f80,65V3 / N336,27f / f56-0,82ET1 / CT11,72|f / f2|+|f / f3|0,53ET3 / ET63,16f / f1+f / f5+f / f8-1,61SAG1R2 / CT11,95SL / TL0,41Yc71 / Yi811,25Dr1r6 / SD1,67ImgH / Y4R1+Y1R1 / Y4R110,03CT2 / CT84,33Y1R1 / Y8R21,37(T230T45) / T340,23Y7R1 / Y6R2+Y6R1 / Y5R22,63(CT2+CT3) / (CT4+CT5+CT6+CT7+CT8)1,35--3. EmbodimentFIG. 5 is a schematic view of an image capturing unit according to the 3rd embodiment of the present disclosure. FIG. 6 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 3rd embodiment. In FIG. 5, the image capturing unit 3 includes the capturing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The detecting optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element E1, a second lens element E2, a diaphragm S1, a third lens element E3, an aperture diaphragm ST, a fourth lens element E4, a diaphragm S2, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9, and an image surface IMG. The sensing optical lens assembly includes eight lens elements (E1, E2, E3, E4, E5, E6, E7 and E8), with no additional lens element being disposed between each of the adjacent eight lens elements. Between each of the adjacent lens elements of the eight lens elements of the sensing optical lens assembly, there is an air gap in a triaxial region.The first lens element E1 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface, both of which are spherical.The second lens element E2 having positive refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The second lens element E2 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The image-side surface of the second lens element E2 has an inflection point.The third lens element E3 having positive refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The third lens element E3 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the third lens element E 3 has an inflection point. The image-side surface of the third lens element E3 has an inflection point.The fourth lens element E4 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The fourth lens element E4 is made of a plastic material and has an object-side surface and an image-side surface both aspherical.The fifth lens element E5 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The fifth lens element E5 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical.The sixth lens element E6 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The sixth lens element E6 is made of a plastic material and has object and image side surfaces both aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has an inflection point. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.The seventh lens element E7 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The seventh lens element E7 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The image-side surface of the seventh lens element E7 has three inflection points. The object-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.The eighth lens element E8 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The eighth lens element E8 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the eighth lens element E8 has two inflection points. The image-side surface of the eighth lens element E8 has three inflection points. The image-side surface of the eighth lens element E8 has a critical point in an off-axis portion thereof.The filter E9 is made of glass material and is located between the eighth lens element E8 and the image surface IMG. It has no influence on the focal length of the detecting optical lens assembly. The image sensor IS is disposed on or near the image surface IMG of the sensing optical lens assembly.The detailed optical data of the third embodiment are shown in Table 3A and the aspherical surface data in Table 3B below.Surface # #Radius of curvatureThickness: ThicknessMaterialIndex indexAbbe #Focal length0ObjectInfinityInfinity1Lens 116,9893(SPH)1,545Glass Glass1,58961,3-8,4323,7129(SPH)3,6833Lens 2-16,7058(ASP)2,373Plastic is a plastic material1,58728,322,204-7,7079(ASP)-0,2495Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,4826Lens 3-38,7603(ASP)2,333Plastic is a plastic material1,54456,013,387-6,2582(ASP)0,5798Aperture DiaphragmPlano-0,0349Lens 43,9326(ASP)1,004Plastic is a plastic material1,54456,04,3410-5,3721(ASP)-0,10411Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,13912Lens 5-12,5102(ASP)0,580Plastic is a plastic material1,63923,5-5,13134,5132(ASP)0,69214Lens 65,7995(ASP)0,590Plastic is a plastic material1,54456,0112,40156,1775(ASP)0,97416Lens 78,7372(ASP)1,163Plastic is a plastic material1,51156,89,6717-10,8447(ASP)0,82218Lens 8-5,0438(ASP)0,600Plastic is a plastic material1,56637,4-6,551914,6046(ASP)0,56020FilterPlano0,210Glass Glass1,51764,2-21Plano0,41122Image ImagePlano-Note: The reference wavelength is 587.6 nm (d-line).The effective radius of the aperture S1 (surface 5) is 2.694 mm.The effective radius of the aperture S2 (surface 11) is 1.328 mm.Surface # #3467k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-1,54418026E-035,15025369E-031,69750134E-03-8,18271804E-03A6 =7,7246569E-05-5,98865918E-04-9,95542142E-042,27455574E-03A8 =-3,23069289E-06-3,95704625E-059,3162847E-05-6,63407873E-04A10 = =-1,47132493E-067.57785237E-05-1,81270763E-055,11209225E-04A12 =4,04994585E-07-3,00649642E-051,67587166E-05-4,42426835E-04A14 =-5,27744670E-086,98246828E-06-7,32379344E-062,43505652E-04A16 =3,52499554E-09-9,81573274E-071,75669750E-06-8,12956686E-05A18=-8,89912319E-117.78806584E-08-2,39912847E-071.62132087E-05A20 =-3,87159109E-13-2,66701281E-091,78391319E-08-1,78312499E-06A22 =---5,72357497,E-108,34388800E-08Surface # #9101213k = k0.00000E+000.00000E+000.00000E+00-8.09202E+00A4 =-7,64893564E-03-3,57631798E-03-9,23421335E-032,64087174E-03A6 =2,48341110E-033,20858355E-054,98211947E-034,0613769E-03A8 =-1,14934070E-03-9,47194385E-04-7,58390144E-03-3,39791027E-03A10 = =4,61321167E-041,68506499E-039.57918129E-032,07730839E-03A12 =-1,08161895E-04-9,08637120E-04-7,13380396E-03-8,38472278E-04A14 =--3,15487681E-032,09507161E-04A16 =---8,01495976E-04-2,99276480E-05A18=--9,07428262E-0542821,94908863E-06Surface # #14151617k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-1,86633518E-02-2,12974796E-02-8,94756949E-037.3909742E-03A6 =8,44526099E-038.00200562E-031,84775499E-038,6964967E-05A8 =-3,96260253E-03-2,68276581E-03-1,04075890E-03-1,19956980E-03A10 = =1,60939966E-038,27618552E-045,07366127E-047,33822054E-04A12 =-5,16509693E-04-2,19798440E-04-1,64054152E-04-2,33604893E-04A14 =1,18935133E-044,75057651E-053,36566543E-054,67421743E-05A16 =-1,83528752E-05-7,97631724E-06-4,46483653E-06-6,37059146E-06A18=1,68813299E-069.74524080E-073,82076633E-076,12379947E-07A20 =-7.02841803E-08-8,00033904E-08-2,02960101E-08-4,1767978E-08A22 =-3,90643627E-096,06930751E-101,98327658E-09A24 =--8,52239618E-11-7,79489366E-12-6,23547238E-11A26 =---1,16550114E-12A28 =----9,78664824E-15Surface # #1819k = k-1,07372E+000.00000E+00A4 =1,47040447E-028,65799202E-03A6 =-7,25288551E-03-8.02809923E-03A8 =1,81831741E-032,82929521E-03A10 = =-2,05785941E-04-6,59915314E-04A12 =-2,12074828E-071,09375127E-04A14 =3,11739029E-06-1,31288744E-05A16 =-4,23602647E-071,14383394E-06A18=2,86128508E-08-7,19325590E-08A20 =-1,04094230E-093,22024206E-09A22 =1,48425999E-11-9,98445713E-11A24 =2,61453361E-132,034637888E-12A26 =-1,26214696E-14-2,44875997E-14A28 =1,34868123E-161,31805019E-16In the 3rd embodiment, the equation of aspherical surface profiles of the above lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters listed in Table 3C are the same as those in the 1st embodiment with corresponding values for the 3rd embodiment, so no further explanation will be given in this respect.In addition, these parameters can be calculated from Table 3A and Table 3B as the following values, and satisfy the following conditions:f [mm]3,92R1 / R161,16Fno2,58R2 / R160,25HFOV [grade]81,1R2 / R130,42FOV [Grade]162,2R3 / R42,17TLxFno / ImgH7,74R15 / R40,652xImgH / TD0,71R7 / R8-0,73BL / f0,30(R7+R8) / (R7-R8)-0,15f / f60,03(R15+R16) / (R15-R16)-0,49f5 / f80,78V3 / N336,27f / f56-0,75ET1 / CT11,68|f / f2|+|f / f3|0,47ET3 / ET63,09f / f1+f / f5+f / f8-1,83SAG1R2 / CT11,89SL / TL0,41Yc71 / Yi810,86Dr1r6 / SD1,58ImgH / Y4R1+Y1R1 / Y4R110,20CT2 / CT83,96Y1R1 / Y8R21,55(T230T45) / T340,49Y7R1 / Y6R2+Y6R1 / Y5R22,75(CT2+CT3) / (CT4+CT5+CT6+CT7+CT8)1,20--4. EmbodimentFIG. 7 is a schematic view of an image capturing unit according to the 4th embodiment of the present disclosure. FIG. 8 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 4th embodiment. In FIG. 7, the image capturing unit 4 includes the capturing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The detecting optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element E1, a second lens element E2, a diaphragm S1, a third lens element E3, an aperture diaphragm ST, a fourth lens element E4, a diaphragm S2, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9, and an image surface IMG. The sensing optical lens assembly includes eight lens elements (E1, E2, E3, E4, E5, E6, E7 and E8), with no additional lens element being disposed between each of the adjacent eight lens elements. Between each of the adjacent lens elements of the eight lens elements of the sensing optical lens assembly, there is an air gap in a triaxial region.The first lens element E1 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface, both of which are spherical.The second lens element E2 having positive refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The second lens element E2 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The image-side surface of the second lens element E2 has an inflection point.The third lens element E3 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The third lens element E3 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the third lens element E3 has two inflection points.The fourth lens element E4 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The fourth lens element E4 is made of glass material and has an object-side surface and an image-side surface both aspherical. The object-side surface of the fourth lens element E4 has an inflection point.The fifth lens element E5 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The fifth lens element E5 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The image-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.The sixth lens element E6 having positive refractive power has an object-side surface concaved in a triaxial portion thereof and an image-side surface convexed in a multiaxial portion thereof. The sixth lens element E6 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The image-side surface of the sixth lens element E6 has two inflection points.The seventh lens element E7 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The seventh lens element E7 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The image-side surface of the seventh lens element E7 has an inflection point. The object-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof. The image-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.The eighth lens element E8 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The eighth lens element E8 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the eighth lens element E8 has two inflection points. The image-side surface of the eighth lens element E8 has four inflection points.The filter E9 is made of glass material and is located between the eighth lens element E8 and the image surface IMG. It has no influence on the focal length of the detecting optical lens assembly. The image sensor IS is disposed on or near the image surface IMG of the sensing optical lens assembly.The detailed optical data of the fourth embodiment are shown in Table 4A and the aspherical surface data in Table 4B below.Surface # #Radius of curvatureThickness: ThicknessMaterialIndex indexAbbe #Focal length0ObjectInfinityInfinity1Lens 112,9939(SPH)1,334Glass Glass1,80 446,6-6,7623,6578(SPH)3,3183Lens 2-76,6526(ASP)2,530Plastic is a plastic material1,58 728,318,544-9,6492(ASP)-0,2215Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,2566Lens 320,7924(ASP)2,088Plastic is a plastic material1,51 858,913,907-10,6430(ASP)0,6378Aperture DiaphragmPlano-0,0659Lens 44,3314(ASP)1,025Glass Glass1,58 961,34,3210-5,6254(ASP)-0,05311Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,10012Lens 5129,5706(ASP)0,330Plastic is a plastic material1,63 923,3-5,56133,4555(ASP)0,93914Lens 6- 200,0000(ASP)0,571Plastic is a plastic material1,51 156,83319,2515179,0727(ASP)0,68516Lens 73,8626(ASP)0,823Plastic is a plastic material1,54 456,011,73179,0525(ASP)1,46218Lens 8-4,3011(ASP)0,460Plastic is a plastic material1,61 525,4-7,9219-38,3810(ASP)0,60020FilterPlano0,210Glass Glass1,51 764,2-21Plano0,35422Image ImagePlano-Note: The reference wavelength is 587.6 nm (d-line).The effective radius of the aperture S1 (surface 5) is 2.742 mm.The effective radius of the aperture S2 (surface 11) is 1.514 mm.Surface # #3467k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-2,78493056E-033,25566718E-031,491453445E-03-1,6306151E-02A6 =-1,23105828E-04-1,74295898E-03-1,78868384E-033,09958613E-03A8 =6,59767931E-058,90069521E-046.75506424E-045,12966965E-04A10 = =-2,48092555E-05-3,34786795E-04-1,55627106E-04-8,6853455E-04A12 =5,83184456E-068,96750413E-054,78173891E-064,35892478E-04A14 =-8,72056225E-07-1,69563163E-056,84265762E-06-1,24635816E-04A16 =7,93929381E-082,26599096E-06-1,70905843E-062,12031160E-05A18=-3,93929192E-09-2,03650028E-071,86294625E-07-1,98160819E-06A20 =8,0911573E-111,10359181 E-08-9,70130897E-097,60609655E-08A22 =--2,73584117E-101,85512382E-103,3589537E-10Surface # #9101213k = k0.00000E+000.00000E+000.00000E+00-1,43121E+01A4 =-1,76517095E-022,02677205E-03-2,27135389E-021,20260091E-02A6 =3,19837937E-03-5,69077308E-031,62415204E-02-3,20747127E-03A8 =-1,59831249E-032,57844303E-03-2,18140611E-02-3,62542219E-04A10 = =7,42117643E-04-6,90049649E-042,42963592E-029.44457209E-04A12 =-1,88368237E-04-1,06526638E-05-1,88699221E-02-6,01393837E-04A14 =--9.48043398E-031,90671397E-04A16 =---2,975255935E-03-3,18907687E-05A18=--5,28091894E-042,24267038E-06A20 =---3,9768841E-05-Surface # #14151617k = k0.00000E+000.00000E+00-7,98766E-010.00000E+00A4 =-2,74086927E-02-4,44184455E-02-1,945294330E-025,69894031E-03A6 =1,58877794E-021.08914910E-021,01965601E-03-6,46938519E-03A8 =-1,4536322E-023,22784002E-031,13741673E-033,54515489E-03A10 = =1,26384040E-02-9,11178578E-03-8 89189920E-04-1,45984697E-03A12 =-8,63546859E-038,23910863E-033,46958980E-044,23951010E-04A14 =4,30494808E-03-4,57694029E-03-8,66578078E-05-8,69446469E-05A16 =-1,502066067E-031,71042809E-031,45916012E-051,26691230E-05A18=3,56018460E-04-4,36823187E-04-1,66968826E-06-1,31339226E-06A20 =-5,45840511E-057,51888232E-051,28275405E-079,60948201E-08A22 =4,88138225E-06-8,33370810E-06-6,40117382E-09-4,84707675E-09A24 =-1,93722002E-075,35987819E-071,93754263E-101,60306792E-10A26 =--1,51616012E-08-3,07005717E-12-3,12648349E-12A28 =--1,70196998E-142,72292908E-14Surface # #1819k = k-7,08730E-010.00000E+00A4 =2,52099787E-022,57275788E-02A6 =-2,5673387E-02-2,33350149E-02A8 =1,32332482E-021.0148803E-02A10 = =-4,46423254E-03-2,87398111E-03A12 =1,05277858E-035,60804218E-04A14 =-1,76108656E-04-7,71702406E-05A16 =2,095798995E-057.56940882E-06A18=-1,77040274E-06-5,30009878E-07A20 =1.05117450E-072,624653990E-08A22 =-4,28480398E-09-8,96801557E-10A24 =1,14181664E-102,00962793E-11A26 =-1,79285125E-12-2,6565989E-13A28 =1,25943840E-141,56980599E-15In the 4th embodiment, the equation of aspherical surface profiles of the above lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in Table 4C are the same as those in the 1st embodiment with corresponding values for the 4th embodiment, so no further explanation will be given in this respect.In addition, these parameters can be calculated from Table 4A and Table 4B as the following values, and satisfy the following conditions:f [mm]3,97R1 / R16-0,34Fno2,63R2 / R16-0,10HFOV [grade]83,0R2 / R130,95FOV [Grade]166,0R3 / R47,94TLxFno / ImgH7,48R15 / R40,452xImgH / TD0,75R7 / R8-0,77BL / f0,29(R7+R8) / (R7-R8)-0,13f / f60,0012(R15+R16) / (R15-R16)-1,25f5 / f80,70V3 / N338,80f / f56-0,71ET1 / CT11,57|f / f2|+|f / f3|0,50ET3 / ET64,52f / f1+f / f5+f / f8-1,80SAG1R2 / CT11,98SL / TL0,43Yc71 / Yi810,77Dr1r6 / SD1,48ImgH / Y4R1+Y1R1 / Y4R19,57CT2 / CT85,50Y1R1 / Y8R21,42(T230T45) / T340,14Y7R1 / Y6R2+Y6R1 / Y5R22,73(CT2+CT3) / (CT4+CT5+CT6+CT7+CT8)1,44--5. EmbodimentFIG. 9 is a schematic view of an image capturing unit according to the 5th embodiment of the present disclosure. FIG. 10 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 5th embodiment. In FIG. 9, the image capturing unit 5 includes the capturing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The detecting optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element E1, a second lens element E2, a diaphragm S1, a third lens element E3, an aperture diaphragm ST, a fourth lens element E4, a diaphragm S2, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9, and an image surface IMG. The sensing optical lens assembly includes eight lens elements (E1, E2, E3, E4, E5, E6, E7 and E8), with no additional lens element being disposed between each of the adjacent eight lens elements. Between each of the adjacent lens elements of the eight lens elements of the sensing optical lens assembly, there is an air gap in a triaxial region.The first lens element E1 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface, both of which are spherical.The second lens element E2 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The second lens element E2 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical.The third lens element E3 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The third lens element E3 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The image-side surface of the third lens element E3 has two inflection points. The image-side surface of the third lens element E3 has a critical point in an off-axis portion thereof.The fourth lens element E4 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The fourth lens element E4 is made of a plastic material and has an object-side surface and an image-side surface both aspherical.The fifth lens element E5 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The fifth lens element E5 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The image-side surface of the fifth lens element E5 has an inflection point.The sixth lens element E6 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The sixth lens element E6 is made of a plastic material and has an object-side surface and an image-side surface both aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has an inflection point. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis portion thereof.The seventh lens element E7 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The seventh lens element E7 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the seventh lens element E7 has an inflection point. The image-side surface of the seventh lens element E7 has an inflection point. The object-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof. The image-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.The eighth lens element E8 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The eighth lens element E8 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the eighth lens element E8 has two inflection points. The image-side surface of the eighth lens element E8 has three inflection points. The object-side surface of the eighth lens element E8 has two critical points in an off-axis portion thereof. The image-side surface of the eighth lens element E8 has a critical point in an off-axis portion thereof.The filter E9 is made of glass material and is located between the eighth lens element E8 and the image surface IMG. It has no influence on the focal length of the detecting optical lens assembly. The image sensor IS is disposed on or near the image surface IMG of the sensing optical lens assembly.The detailed optical data of the 5th embodiment are listed in Table 5A and the aspherical surface data in Table 5B below.Surface # #Radius of curvatureThickness: ThicknessMaterialIndex indexAbbe #Focal length0ObjectInfinityInfinity1Lens 120,9445(SPH)1,412Glass Glass1,58961,3-7,9323,7254(SPH)3,6093Lens 2-9,7425(ASP)2,519Plastic is a plastic material1,54456,0-149,834-12,0730(ASP)-0,2895Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,3246Lens 33,9603(ASP)2,250Plastic is a plastic material1,54456,07,397203,0390(ASP)0,2928Aperture DiaphragmPlano0,1319Lens 45,5046(ASP)1,036Plastic is a plastic material1,54456,04,3310-3,8483(ASP)-0,14911Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,18412Lens 5-25,1180(ASP)0,400Plastic is a plastic material1,63923,5-5,30133,9389(ASP)0,90214Lens 67,2777(ASP)0,560Plastic is a plastic material1,54456,0-26,06154,6790(ASP)0,38916Lens 74,1225(ASP)0,983Plastic is a plastic material1,54456,012,44179,6564(ASP)1,29618Lens 8-19,2010(ASP)0,560Plastic is a plastic material1,61426,0-11,551911,3580(ASP)0,58020FilterPlano0,210Glass Glass1,51764,2-21Plano0,26922Image ImagePlano-Note: The reference wavelength is 587.6 nm (d-line).The effective radius of the aperture S1 (surface 5) is 2.782 mm.The effective radius of the aperture S2 (surface 11) is 1.442 mm.Surface # #3467k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-4,47753271E-04-1,25424975E-03-4,16069280E-03-9,77961950E-03A6 =-1,0927755E-041,10627274E-031,36991535E-03-5,60942520E-03A8 =4,21068843E-05-7,73599933E-04-1,48319329E-031,91978972E-02A10 = =-1,33352808E-053,45362642E-048,82761230E-04-2,867660041E-02A12 =2,72064535E-06-1,05004720E-04-3,7511265E-042,68737134E-02A14 =-3,53407706E-072,16511823E-051,10443714E-04-1,5963099E-02A16 =2,78207646E-08-2,97052607E-06-2,20451652E-055,89769031E-03A18=-1,19503048E-092,59827503E-072,86010459E-06-1,26379527E-03A20 =2,13884898E-11-1,311010809E-08-2,16512714E-071,31724366E-04A22 =-2.90305940E-107, 24583173E-09-3,58431546E-06Surface # #9101213k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-1,41926057E-022,95614908E-03-2,54816157E-02-2,98592586E-02A6 =1,30690915E-03-1,43887162E-023,23214464E-031,66028775E-02A8 =-1,20969078E-041,15603272E-02-6,77236107E-03-1,29192660E-02A10 = =3,39861239E-04-5,68708451E-031,05817684E-028,63827990E-03A12 =-7,4394892E-051,61943450E-03-9,21361897E-03-4,28794616E-03A14 =--2,17983712E-044,5951984E-031,43585778E-03A16 =---1,34669146E-03-3,02793788E-04A18=--2,10961779E-043,59665996E-05A20 =---1,38069199E-05-1,81496304E-06Surface # #14151617k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-2,8511347E-02-5,56398045E-02-3,73174087E-02-1,0224895E-02A6 =1,99454901E-023,48702866E-021,71346894E-023,567,20168E-03A8 =-1,4229898E-02-1,96696400E-02-6,59094731E-03-8,05127366E-05A10 = =7,96689889E-038,40342576E-031,780811006E-03-3,83724754E-04A12 =-3,22775094E-03-2,60222806E-03-3,43567106E-041,514066649E-04A14 =9,21727841E-045,78134096E-044,83893977E-05-3,14497198E-05A16 =-1,82877920E-04-9,17221303E-05-5,076556551E-064,19815588E-06A18=2,46160271E-051,02706794E-053,98834218E-07-3,81866092E-07A20 =-2,14084438E-06-7,90579015E-07-2,29592140E-082,40182067E-08A22 =1,08394592E-073,96902103E-089,10466644E-10-1,03085732E-09A24 =-2,42428278E-09-1,16643933E-09-2,1955288E-112,88590753E-11A26 =-1,51658476E-112,39459874E-13-4,75195534E-13A28 =---3,48994604E-15Surface # #1819k = k0.00000E+000.00000E+00A4 =-1,11736551E-02-7,14351255E-03A6 =-2,40065438E-03-3,43696004E-03A8 =2,68211397E-032,14653597E-03A10 = =-9,37761715E-04-6,17339332E-04A12 =1,94267704E-041,11049172E-04A14 =-2,6932684E-05-1,35915372E-05A16 =2,60790881E-061,16978938E-06A18=-1,78568506E-07-7,15420952E-08A20 =8,59778565E-093,09144192E-09A22 =-2,84421329E-10-9,21883821E-11A24 =6,14991917E-121,80320977E-12A26 =-7,82317228E-14-2,0798279E-14A28 =4,43843952E-161.07111309E-16In the 5th embodiment, the equation of the aspherical surface profiles of the above lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in Table 5C are the same as those in the 1st embodiment with corresponding values for the 5th embodiment, so no further explanation will be given in this respect.In addition, these parameters can be calculated from Table 5A and Table 5B as the following values, and satisfy the following conditions:f [mm]4,08R1 / R161,84Fno2,66R2 / R160,33HFOV [grade]82,9R2 / R130,90FOV [Grade]165,8R3 / R40,81TLxFno / ImgH7,68R15 / R41,592×ImgNH / TD0,74R7 / R8-1,43BL / f0,26(R7+R8) / (R7-R8)0,18f / f6-0,16(R15+R16) / (R15-R16)0,26f5 / f80,46V3 / N336,27f / f56-0,99ET1 / CT11,93|f / f2|+|f / f3|0,58ET3 / ET62,54f / f1+f / f5+f / f8-1,64SAG1R2 / CT11,89SL / TL0,42Yc71 / Yi811,40Dr1r6 / SD1,56ImgH / Y4R1+Y1R1 / Y4R19,97CT2 / CT84,50Y1R1 / Y8R21,44(T230T45) / T340,17Y7R1 / Y6R2+Y6R1 / Y5R22,74(CT2+CT3) / (CT4+CT5+CT6+CT7+CT8)1,35--6. EmbodimentFIG. 11 is a schematic view of an image capturing unit according to the 6th embodiment of the present disclosure. FIG. 12 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 6th embodiment. In FIG. 11, the image capturing unit 6 includes the capturing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The detecting optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element E1, a second lens element E2, a diaphragm S1, a third lens element E3, an aperture diaphragm ST, a fourth lens element E4, a diaphragm S2, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9, and an image surface IMG. The sensing optical lens assembly includes eight lens elements (E1, E2, E3, E4, E5, E6, E7 and E8), with no additional lens element being disposed between each of the adjacent eight lens elements. Between each of the adjacent lens elements of the eight lens elements of the sensing optical lens assembly, there is an air gap in a triaxial region.The first lens element E1 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface, both of which are spherical.The second lens element E2 having positive refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The second lens element E2 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The image-side surface of the second lens element E2 has two inflection points.The third lens element E3 having positive refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The third lens element E3 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical.The fourth lens element E4 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The fourth lens element E4 is made of glass material and has an object-side surface and an image-side surface both aspherical.The fifth lens element E5 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The fifth lens element E5 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.The sixth lens element E6 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The sixth lens element E6 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has an inflection point. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.The seventh lens element E7 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The seventh lens element E7 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The image-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has two critical points in an off-axis portion thereof.The eighth lens element E8 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The eighth lens element E8 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the eighth lens element E8 has two inflection points. The image-side surface of the eighth lens element E8 has an inflection point. The image-side surface of the eighth lens element E8 has a critical point in an off-axis portion thereof.The filter E9 is made of glass material and is located between the eighth lens element E8 and the image surface IMG. It has no influence on the focal length of the detecting optical lens assembly. The image sensor IS is disposed on or near the image surface IMG of the sensing optical lens assembly.The detailed optical data of the 6th embodiment are shown in Table 6A and the data of aspherical surfaces are shown in Table 6B below.Surface # #Radius of curvatureThickness: ThicknessMaterialIndex indexAbbe #Focal length0ObjectInfinityInfinity1Lens 112,2121(SPH)1,226Glass Glass1,80446,6-7,1023,7165(SPH)3,0673Lens 2-20,0642(ASP)2,500Plastic is a plastic material1,58728,312,794-5,7173(ASP)-0,4215Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,4816Lens 3-11,3528(ASP)1,871Plastic is a plastic material1,54456,017,777-5,5245(ASP)0,7578Aperture DiaphragmPlano-0,1019Lens 46,2193(ASP)0,922Glass Glass1,58961,25,6010-6,6309(ASP)-0,10511Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,14012Lens 511,8543(ASP)0,600Plastic is a plastic material1,66919,5-7,65133,5030(ASP)0,86814Lens 66,8942(ASP)0,600Plastic is a plastic material1,54456,0-105,14155,9640(ASP)0,67116Lens 76,6371(ASP)1,680Plastic is a plastic material1,54456,06,9517-8,0141(ASP)0,75818Lens 8-3,7774(ASP)0,736Plastic is a plastic material1,63923,5-5,021922,8709(ASP)0,60020FilterPlano0,210Glass Glass1,51764,2-21Plano0,34422Image ImagePlano-Note: The reference wavelength is 587.6 nm (d-line).The effective radius of the aperture S1 (surface 5) is 2.624 mm.The effective radius of the aperture S2 (surface 11) is 1.474 mm.Surface # #3467k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-3,22021650E-036,93599425, E-031.91588097E-03-6,61251404E-03A6 =1,79644129E-04-3,57120282E-04-1,64753839E-041,35374056E-03A8 =-1,89660267E-05-7,30981569E-04-1,25123143E-03-2,66035406E-04A10 = =2,32564714E-064,63462300E-047.09542678E-046,45633714E-05A12 =-8,14619473E-08-1,50625165E-04-2,16293182E-04-2,43095737E-05A14 =-2,79119767E-083,04579253E-054,04826570E-058,84131233E-06A16 =4,97865435E-09-3,84376065E-06-4,56570971E-06-2,18170716E-06A18=-3,18572751E-102,79689340E-072,76592796E-073,28244726E-07A20 =7.02829613E-12-9,01791178E-09-5,69701248E-09-2,72433557E-08A22 =---1,18521952E-109, 61605323E-10Surface # #9101213k = k0.00000E+000.00000E+000.00000E+00-8,81647E+00A4 =-5,55517176E-03-8,26441732E-03-1,70517373E-029.38127079E-03A6 =8,96088159E-042,40004972E-033,75860217E-03-4,60388360E-03A8 =-4,69324676E-04-2,00178898E-03-2,7225841811E-031,67172721E-03A10 = =1,60215652E-041.30184805E-032,97664388E-03-1,14491194E-04A12 =-6,066075118E-05-5,50917098E-04-2,12161094E-03-2,34875326E-04A14 =-8,21487460E-058,68188428E-041,21311275E-04A16 =---1,99661355E-04-2,705568113E-05A18=--2,05480342E-052,44840166E-06Surface # #14151617k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-1,63032563E-02-2,54869922E-02-1,25787757E-025,31719913E-03A6 =8,11250463E-031,10996999E-022,75714609E-035,10035634E-05A8 =-4,43703376E-03-5,30447352E-03-9.78798567E-042,17183179E-04A10 = =2,01829891E-032,35413973E-032,38986274E-04-2,88911874E-04A12 =-7,12718295E-04-8,40326152E-04-3,87513282E-059,12393051E-05A14 =1,80686263E-042,22746208E-044,37978714E-06-1,3880575E-05A16 =-3,04508249E-05-4,19232209E-05-4,30340526E-071,04056937E-06A18=3,01446584E-065,407484440E-064,27683491E-08-1,05007845E-08A20 =-1,33194096E-07-4,54410281E-07-3,29362944E-09-4,98175877E-09A22 =-2,24175932E-081,44248905E-104,46041464E-10A24 =--4,92054049E-10-2,59377019E-12-1,75504344E-11A26 =---3,21041081E-13A28 =----1,94590724E-15Surface # #1819k = k-1,00000E+000.00000E+00A4 =2,00968608E-03-1,11274217E-02A6 =6,62076524E-035,61735422E-03A8 =-4,15043839E-03-1,87523136E-03A10 = =1,56441584E-033,84479725E-04A12 =-4,56754435E-04-5,37875450E-05A14 =9.99810505E-055,37693195E-06A16 =-1,56097914E-05-3,87620189E-07A18=1,70797361E-061,99055833E-08A20 =-1,29641401E-07-7,06061947E-10A22 =6,68041417E-091,63039794E-11A24 =-2,22786527E-10-2,16580031E-13A26 =4,33402143E-121,14980681E-15A28 =-3,73175890E-142,17363155E-18In the 6th embodiment, the equation of aspherical surface profiles of the above lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in Table 6C are the same as those in the 1st embodiment with corresponding values for the 6th embodiment, so an explanation thereof will not be given again.In addition, these parameters can be calculated from Table 6A and Table 6B as the following values, and satisfy the following conditions:f [mm]3,92R1 / R160,53Fno2,65R2 / R160,16HFOV [grade]80,2R2 / R130,56FOV [Grade]160,4R3 / R43,51TLxFno / ImgH7,53R15 / R40,662×ImgH / TD0,75R7 / R8-0,94BL / f0,29(R7+R8) / (R7-R8)-0,03f / f6-0,04(R15+R16) / (R15-R16)-0,72f5 / f81,52V3 / N336,27f / f56-0,57ET1 / CT11,54|f / f2|+|f / f3|0,53ET3 / ET62,34f / f1+f / f5+f / f8-1,84SAG1R2 / CT11,94SL / TL0,46Yc71 / Yi810,87Dr1r6 / SD1,29ImgH / Y4R1+Y1R1 / Y4R19,35CT2 / CT83,40Y1R1 / Y8R21,24(T230T45) / T340,14Y7R1 / Y6R2+Y6R1 / Y5R22,60(CT2+CT3) / (CT4+CT5+CT6+CT7+CT8)0,96--7. EmbodimentFIG. 13 is a schematic view of an image capturing unit according to the 7th embodiment of the present disclosure. FIG. 14 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 7th embodiment. In FIG. 13, the image capturing unit 7 includes the capturing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The detecting optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element E1, a second lens element E2, a diaphragm S1, a third lens element E3, an aperture diaphragm ST, a fourth lens element E4, a diaphragm S2, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9, and an image surface IMG. The sensing optical lens assembly includes eight lens elements (E1, E2, E3, E4, E5, E6, E7 and E8), with no additional lens element being disposed between each of the adjacent eight lens elements. Between each of the adjacent lens elements of the eight lens elements of the sensing optical lens assembly, there is an air gap in a triaxial region.The first lens element E1 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface, both of which are spherical.The second lens element E2 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The second lens element E2 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical.The third lens element E3 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The third lens element E3 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The image-side surface of the third lens element E3 has two inflection points. The image-side surface of the third lens element E3 has a critical point in an off-axis portion thereof.The fourth lens element E4 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The fourth lens element E4 is made of a plastic material and has an object-side surface and an image-side surface both aspherical.The fifth lens element E5 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The fifth lens element E5 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The image-side surface of the fifth lens element E5 has an inflection point.The sixth lens element E6 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The sixth lens element E6 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has two inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis portion thereof.The seventh lens element E7 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The seventh lens element E7 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The image-side surface of the seventh lens element E7 has an inflection point. The object-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof. The image-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.The eighth lens element E8 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The eighth lens element E8 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the eighth lens element E8 has two inflection points. The image-side surface of the eighth lens element E8 has three inflection points. The object-side surface of the eighth lens element E8 has two critical points in an off-axis portion thereof. The image-side surface of the eighth lens element E8 has a critical point in an off-axis portion thereof.The filter E9 is made of glass material and is located between the eighth lens element E8 and the image surface IMG. It has no influence on the focal length of the detecting optical lens assembly. The image sensor IS is disposed on or near the image surface IMG of the sensing optical lens assembly.The detailed optical data of the 7th embodiment are listed in Table 7A and the aspherical surface data in Table 7B below.Surface # #Radius of curvatureThickness: ThicknessMaterialIndex indexAbbe #Focal length0ObjectInfinityInfinity1Lens 125,3142(SPH)1,418Glass Glass1,58961,3-8,1323,9446(SPH)3,3193Lens 2-11,6809(ASP)2,480Plastic is a plastic material1,54456,0-154,384-14,5829(ASP)-0,1695Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,5166Lens 33,9745(ASP)2,327Plastic is a plastic material1,53456,07,587165,3962(ASP)0,3488Aperture DiaphragmPlano0,1389Lens 45,1901(ASP)1,002Plastic is a plastic material1,54456,04,3910-4,1275(ASP)-0,12111Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,15612Lens 5-30,7989(ASP)0,400Plastic is a plastic material1,63923,5-5,53134,0101(ASP)1,02914Lens 66,6779(ASP)0,560Plastic is a plastic material1,54456,0-24,90154,3407(ASP)0,39016Lens 74,0954(ASP)0,966Plastic is a plastic material1,54456,013,64178,3807(ASP)1,31818Lens 8-29,2743(ASP)0,566Plastic is a plastic material1,61425,6-12,401910,3533(ASP)0,58020FilterPlano0,210Glass Glass1,51764,2-21Plano0,24822Image ImagePlano-Note: The reference wavelength is 587.6 nm (d-line).The effective radius of the aperture S1 (surface 5) is 2.879 mm.The effective radius of the aperture S2 (surface 11) is 1.349 mm.Surface # #3467k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-4,5924466E-04-1,10774625E-03-4,08012790E-03-9,30493579E-03A6 =-9,47745399E-054,75832961E-048,24260379E-04-4,43951722E-03A8 =3,60643698E-05-1,92321770E-04-9,71872086E-041,47262118E-02A10 = =-1,16641157E-056,25068605E-056,75648775E-04-2,08173328E-02A12 =2,33163522E-06-1,58404007E-05-3,29917689E-041,85803993E-02A14 =-2,87300341E-072,929424090, E-061,08346478E-04-1,05885349E-02A16 =2,0917588E-08-3,78930556E-07-2,34828417E-053,78928240E-03A18=-8,12590804E-103,2617809E-083,22755058E-06-8,00869472E-04A20 =1,27972332E-11-1,67075559E-09-2,53799837E-078,63367496E-05A22 =-3,80991014E-118.67641075E-09-3,07643560E-06Surface # #9101213k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-1,25376121E-021,99106626E-03-2,56080367E-02-2,85594872E-02A6 =1,17325539E-03-1,21363869E-025,42320710E-031,50166616E-02A8 =-1,55321257E-049, 34493955E-03-1,16950253E-02-1,10922535E-02A10 = =3,53513274E-04-4,3089197E-031,94196455E-027,06347499E-03A12 =-6,74270858E-051.20516590E-03-1,97894621E-02-3,30552564E-03A14 =--1,67623003E-041,27108369E-021,02679974E-03A16 =---5,10835953E-03-1,96808546E-04A18=--1,16499852E-032,054961448E-05496148E-05A20 =---1,15300430E-04-8,54987351E-07Surface # #14151617k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-2,66444298-E-02-5,18160959E-02-3,25442070E-02-6,90571571E-03A6 =1,58959220E-022,86322370E-021,29139385E-022,22275594E-03A8 =-9,87184527E-03-1,47963031E-02-4,54031623E-031,18095467E-04A10 = =5,00837552E-036.023143445E-031,09880919E-03-3,78134387E-04A12 =-1,90306015E-03-1,82378053E-03-1,77223280E-041,45641277E-04A14 =5,18152232E-044,00881747E-041,79924308E-05-3,09040910E-05A16 =-9,86866324E-05-6,32089390E-05-9,4264330888E-074,24706273E-06A18=1,277457442E-057.04012069E-06-7,33386495E-09-3,97383997E-07A20 =-1,06711305E-06-5,38478049E-074,68354974E-092,56032785E-08A22 =5,172955858E-082,68237245E-08-3,13079914E-10-1,11928529E-09A24 =-1,10289100E-09-7,81670143E-109.52756307E-123,17172060E-11A26 =-1.00901847E-11-1,16489238E-13-5,25349204E-13A28 =---3,85861495E-15Surface # #1819k = k0.00000E+000.00000E+00A4 =-5,51379212E-03-8,42200054E-04A6 =-5,99450157E-03-7,85033507E-03A8 =4,30283827E-033,9536739E-03A10 = =-1,45346072E-03-1,0909966E-03A12 =3,057411232E-041,93907259E-04A14 =-4,32969895E-05-2,35786322E-05A16 =4,25790563E-062,01681857E-06A18=-2,93812349E-07-1,22548445E-07A20 =1,41625121E-085,26168596E-09A22 =-4,66744790E-10-1,55977683E-10A24 =1.00201148E-113,03516208E-12A26 =-1,26260912E-13-3,48582596E-14A28 =7.08458973E-161,7892709E-16In the 7th embodiment, the equation of aspherical surface profiles of the above lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters listed in Table 7C are the same as those in the 1st embodiment with corresponding values for the 7th embodiment, so no further explanation will be given in this respect.In addition, these parameters can be calculated from Table 7A and Table 7B as the following values, and satisfy the following conditions:f [mm]4,27R1 / R162,45Fno2,65R2 / R160,38HFOV [grade]84,6R2 / R130,96FOV [Grade]169,2R3 / R40,80TL×Fno / ImgH7,73R15 / R42,012×ImgH / TD0,73R7 / R8-1,26BL / f0,24(R7+R8) / (R7-R8)0,11f / f6-0,17(R15+R16) / (R15-R16)0,48f5 / f80,45V3 / N336,51f / f56-1,01ET1 / CT11,98|f / f2|+|f / f3|0,59ET3 / ET62,55f / f1+f / f5+f / f8-1,64SAG1R2 / CT11,75SL / TL0,42Yc71 / Yi810,98Dr1r6 / SD1,54ImgH / Y4R1+Y1R1 / Y4R19,98CT2 / CT84,38Y1R1 / Y8R21,40(T230T45) / T340,79Y7R1 / Y6R2+Y6R1 / Y5R22,89(CT2+CT3) / (CT4+CT5+CT6+CT7+CT8)1,38--8. EmbodimentFIG. 15 is a schematic view of an image capturing unit according to the 8th embodiment of the present disclosure. FIG. 16 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 8th embodiment. In FIG. 15, the image capturing unit 8 includes the capturing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The detecting optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element E1, a second lens element E2, a diaphragm S1, a third lens element E3, an aperture diaphragm ST, a fourth lens element E4, a diaphragm S2, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9, and an image surface IMG. The sensing optical lens assembly includes eight lens elements (E1, E2, E3, E4, E5, E6, E7 and E8), with no additional lens element being disposed between each of the adjacent eight lens elements. Between each of the adjacent lens elements of the eight lens elements of the sensing optical lens assembly, there is an air gap in a triaxial region.The first lens element E1 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The first lens element E1 is made of a plastic material and has an object-side surface and an image-side surface, both of which are spherical.The second lens element E2 having positive refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The second lens element E2 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The image-side surface of the second lens element E2 has an inflection point.The third lens element E3 having positive refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The third lens element E3 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the third lens element E 3 has an inflection point.The fourth lens element E4 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The fourth lens element E4 is made of a plastic material and has an object-side surface and an image-side surface both aspherical.The fifth lens element E5 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The fifth lens element E5 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.The sixth lens element E6 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The sixth lens element E6 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has an inflection point. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.The seventh lens element E7 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The seventh lens element E7 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The image-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof. The image-side surface of the seventh lens element E7 has two critical points in an off-axis portion thereof.The eighth lens element E8 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The eighth lens element E8 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the eighth lens element E8 has two inflection points. The image-side surface of the eighth lens element E8 has three inflection points. The object-side surface of the eighth lens element E8 has a critical point in an off-axis portion thereof. The image-side surface of the eighth lens element E8 has a critical point in an off-axis portion thereof.The filter E9 is made of glass material and is located between the eighth lens element E8 and the image surface IMG. It has no influence on the focal length of the detecting optical lens assembly. The image sensor IS is disposed on or near the image surface IMG of the sensing optical lens assembly.The detailed optical data of the 8th embodiment are listed in Table 8A and the aspherical surface data in Table 8B below.0ObjectInfinityInfinity1Lens 116,6128(SPH)2,140Plastic is a plastic material1,54455,9-8,3023,3857(SPH)4,1713Lens 2-10,4677(ASP)1,800Plastic is a plastic material1,58728,316,284-5,3145(ASP)-0,3495Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,5406Lens 3-19,7505(ASP)1,980Plastic is a plastic material1,54456,014,637-5,8725(ASP)0,7938Aperture DiaphragmPlano-0,1029Lens 44,2532(ASP)0,893Plastic is a plastic material1,54456,04,9110-6,6420(ASP)-0,10411Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,13912Lens 574,5071(ASP)0,560Plastic is a plastic material1,66919,5-6,26133,9554(ASP)0,90214Lens 66,3311(ASP)0,610Plastic is a plastic material1,54456,0-127,71155,6054(ASP)0,53316Lens 76,6839(ASP)0,886Plastic is a plastic material1,54455,99,7817-24,6901(ASP)1,17018Lens 8-5,9723(ASP)0,580Plastic is a plastic material1,58428,2-7,431916,4518(ASP)0,60020FilterPlano0,210Glass Glass1,51764,2-21Plano0,15222Image ImagePlano-Note: The reference wavelength is 587.6 nm (d-line).The effective radius of the aperture S1 (surface 5) is 2.779 mm.The effective radius of the aperture S2 (surface 11) is 1.252 mm.Surface # #3467k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-2,53204504E-038,23356839E-034,49290849E-03-6,12708162E-03A6 =1.58751534E-04-2,44258654E-03-3,10269660E-037,55062293E-04A8 =-9,90288475E-067,13456684E-041,1357689E-031,83514731E-05A10 = =-1,57267311E-06-1,64462471E-04-3,98311915E-04-1,53358619E-06A12 =7.09297972E-072,87076262E-051,25610393E-04-2,66756774E-05A14 =-1,25148614E-07-3,38328701E-06-2,95987611E-051,60080168E-05A16 =1,23669015E-082,39842694E-074,79388238E-06-4,54820126E-06A18=-5,90161874E-10-7,80528258E-09-4,96259980E-077.20338875E-07A20 =8,34931944E-122,28732817E-112,93679417E-08-6,13034457E-08A22 =---7,5250683E-102,19945643E-09Surface # #9101213k = k0.00000E+000.00000E+000.00000E+00-8,84286E+00A4 =-3,53145945E-03-9,45687351 E-03-2,16848308E-021,59190449E-03A6 =8,39916629, E-048,69565785E-031,46754136E-022,72871398E-03A8 =-1,07607592E-03-9,43708242E-03-1,4969855E-02-4,76925753E-04A10 = =6,00321441E-046,248888565E-031,4846113E-02-6,18566439E-04A12 =-1,74955321E-04-2,27418122E-03-1,08327501E-027,19215658E-04A14 =-3,10186770E-045,28825859E-03-3,38999877E-04A16 =---1,55168978E-037,43837891E-05A18=--2,02467210E-04-6,09490523E-06Surface # #14151617k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-1,89371113E-02-2,83858025E-02-9,67086575E-031,07269391E-02A6 =9.34372108E-031,20389057E-023,11629016E-03-1,24129764E-03A8 =-5,16079718E-03-4,97300778E-03-1,05841989E-033,9491119E-04A10 = =2,32304501E-031,76591072E-032,87587249E-04-1,16127542E-04A12 =-7,76607275E-04-4,95407974E-04-7,50422892E-057, 41631521E-06A14 =1,79485867E-041,07210160E-041.58900779E-053,57942610E-06A16 =-2,71793237E-05-1,75728751E-05-2,34000535E-06-1,05677458-E-06A18=2,41931419E-062,08389665E-062,2369517E-071,43905162E-07A20 =-9,62983630E-08-1,65949247E-07-1,31439282E-08-1,18591957E-08A22 =-7.8459587E-094,30100138E-106,23559879,E-10A24 =--1,6529375E-10-5,99729899E-12-2,05455200E-11A26 =---3,87939446E-13A28 =----3,21057546E-15Surface # #1819k = k-1,01890E+000.00000E+00A4 =9, 17275727E-035,39356966E-03A6 =-4,79370386E-03-6,50950352E-03A8 =1,25531108E-032,46182575E-03A10 = =-1,2850473E-04-6,35136411E-04A12 =-1,33788392E-051,1858855E-04A14 =6,08624462E-06-1,61880026E-05A16 =-9,06103001E-071,60747219E-06A18=7.84600902E-08-1,14961367E-07A20 =-4,36772729E-095,82627387E-09A22 =1,59021245E-10-2,033367998E-10A24 =-3,67359473E-124,63473836E-12A26 =4,8983542E-14-6,19897203E-14A28 =-2,8755259E-163,68478049E-16In the 8th embodiment, the equation of aspherical surface profiles of the above lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in Table 8C are the same as those given in the 1st embodiment with corresponding values for the 8th embodiment, so no further explanation will be given in this respect.In addition, these parameters can be calculated from Table 8A and Table 8B as the following values, and satisfy the following conditions:f [mm]3,65R1 / R161,01Fno2,42R2 / R160,21HFOV [grade]76,9R2 / R130,51FOV [Grade]153,8R3 / R41,97TLxFno / ImgH7,69R15 / R41,122×ImgNH / TD0,67R7 / R8-0,64BL / f0,26(R7+R8) / (R7-R8)-0,22f / f6-0,03(R15+R16) / (R15-R16)-0,47f5 / f80,84V3 / N336,27f / f56-0,64ET1 / CT11,44|f / f2|+|f / f3|0,47ET3 / ET62,29f / f1+f / f5+f / f8-1,51SAG1R2 / CT11,51SL / TL0,39Yc71 / Yi811,05Dr1r6 / SD1,69ImgH / Y4R1+Y1R1 / Y4R110,76CT2 / CT83,10Y1R1 / Y8R21,74(T230T45) / T340,33Y7R1 / Y6R2+Y6R1 / Y5R22,80(CT2+CT3) / (CT4+CT5+CT6+CT7+CT8)1,07--9. EmbodimentFIG. 17 is a schematic view of an image capturing unit according to the 9th embodiment of the present disclosure. FIG. 18 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 9th embodiment. In FIG. 17, the image capturing unit 9 includes the capturing optical lens assembly (its reference numerals are omitted) of the present disclosure and an image sensor IS. The detecting optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element E1, a second lens element E2, a diaphragm S1, a third lens element E3, an aperture diaphragm ST, a fourth lens element E4, a diaphragm S2, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9, and an image surface IMG. The sensing optical lens assembly includes eight lens elements (E1, E2, E3, E4, E5, E6, E7 and E8), with no additional lens element being disposed between each of the adjacent eight lens elements. Between each of the adjacent lens elements of the eight lens elements of the sensing optical lens assembly, there is an air gap in a triaxial region.The first lens element E1 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface, both of which are spherical.The second lens element E2 having positive refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The second lens element E2 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The image-side surface of the second lens element E2 has an inflection point.The third lens element E3 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The third lens element E3 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the third lens element E3 has two inflection points.The fourth lens element E4 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The fourth lens element E4 is made of glass material and has an object-side surface and an image-side surface both aspherical.The fifth lens element E5 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The fifth lens element E5 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.The sixth lens element E6 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The sixth lens element E6 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has an inflection point. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis portion thereof.The seventh lens element E7 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The seventh lens element E7 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the seventh lens element E7 has three inflection points. The image-side surface of the seventh lens element E7 has three inflection points. The object-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof. The image-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.The eighth lens element E8 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The eighth lens element E8 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the eighth lens element E8 has two inflection points. The image-side surface of the eighth lens element E8 has four inflection points. The image-side surface of the eighth lens element E8 has two critical points in an off-axis portion thereof.The filter E9 is made of glass material and is located between the eighth lens element E8 and the image surface IMG. It has no influence on the focal length of the detecting optical lens assembly. The image sensor IS is disposed on or near the image surface IMG of the sensing optical lens assembly.The detailed optical data of the 9th embodiment are listed in Table 9A and the aspherical surface data in Table 9B below.Surface # #Radius of curvatureThickness: ThicknessMaterialIndex indexAbbe #Focal length0ObjectInfinityInfinity1Lens 112,6199(SPH)1,419Glass Glass1,80446,6-7,0723,7242(SPH)3,5003Lens 2-40,1119(ASP)2,650Plastic is a plastic material1,58728,319,544-9,1395(ASP)-0,1805Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,2156Lens 316,3679(ASP)2,061Plastic is a plastic material1,5355,813,997-12,9712(ASP)0,7188Aperture DiaphragmPlano-0,1109Lens 44,1394(ASP)1,000Glass Glass1,58961,34,2410-5,7346(ASP)-0,01111Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,07012Lens 5128,9637(ASP)0,400Plastic is a plastic material1,64222,5-5,74133,5778(ASP)1,12314Lens 68,7326(ASP)0,620Glass Glass1,54456,0-24,17155,1162(ASP)0,44916Lens 73,7221(ASP)0,988Plastic is a plastic material1,51156,88,161731,5366(ASP)1,16418Lens 8-3,9428(ASP)0,500Plastic is a plastic material1,61425,6-7,4219-30,8891(ASP)0,60020FilterPlano0,210Glass Glass1,51764,2-21Plano0,14622Image ImagePlano-Note: The reference wavelength is 587.6 nm (d-line).The effective radius of the aperture S1 (surface 5) is 2.672 mm.The effective radius of the aperture S2 (surface 11) is 1.399 mm.Surface # #3467k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-2,44998279E-034,94331073E-032,30082170E-03-1,47814070E-02A6 =-5,23463870E-05-2,05656021E-03-1,84497284E-031,73960185E-03A8 =5,19831971E-057,13052044E-042,19165097E-041,22529126E-03A10 = =-2,11690882E-05-1,98992029E-046,7572883E-05-1,28177172E-03A12 =4,7384253E-064,90896248E-05-3,02346317E-056,67912849E-04A14 =-6,43561763E-07-1,01226308E-052,54094399E-06-2,19929732E-04A16 =5,27013738E-081,56588143E-068,65636428E-074,65387588E-05A18=-2,36558785E-09-1,60470583E-07-2,43427876E-07-6,04776043E-06A20 =4,42903725E-119.51805752E-092,41312093E-084,30656170E-07A22 =--2,46925134E-10-8,81415509E-10-1,23421565E-08Surface # #9101213k = k0.00000E+000.00000E+000.00000E+00-1,28363E+01A4 =-1,44493732E-02-1,58389704E-03-2,18942895E-021,10908420E-02A6 =2,03119120E-03-4,16138627E-031,34054449E-02-3,433399039E-03A8 =-1,51310417E-032.08152350E-03-2,25698620E-022.37504580E-03A10 = =7,20784373E-04-5,02651271E-043,54069904E-02-1,90710730E-03A12 =-1,81609996E-04-2,9451464E-05-3,66535594E-021,20577349E-03A14 =--2,43755216E-02-4,97062203E-04A16 =---1,01003713E-021,12060373E-04A18=--2,36422436E-03-1,0372258E-05A20 =---2,38093925E-04-Surface # #14151617k = k0.00000E+000.00000E+00-8,89190E-010.00000E+00A4 =-2,98378599E-02-6,07864513E-02-3,21012563E-026,51316370E-03A6 =2,04794829E-022,99039682E-027.76935600E-03-6,93042511E-03A8 =-1,39996348E-02-1,30839290E-02-2,55224885E-045,11510285E-03A10 = =7.58146006E-034,31876046E-03-7,75008466E-04-2,03934479E-03A12 =-3,11407237E-03-1,06071681E-033,26089673E-044,84610187E-04A14 =9,48563681E-041,99520667E-04-7,42105490E-05-7,50083413E-05A16 =-2,08683229E-04-2,91727980E-051,1426873E-057,93235721E-06A18=3,19273904E-053,26933952E-06-1,26879626E-06-5,86325470E-07A20 =-3,20479906E-06-2,69543140E-071,019499029E-073,04948722E-08A22 =1,89136156E-071,52368327E-08-5,74116819E-09-1,11376927E-09A24 =-4,96698795E-09-5,2167186E-102,12981234E-102.85285000E-11A26 =-8,07801714E-12-4,64298461E-12-5,16340767E-13A28 =--4,48682513E-146,494448739E-15A30 =----4,50714626E-17Surface # #1819k = k-8,38288E-010.00000E+00A4 =3,48556753E-023,60870206E-02A6 =-3,330000305E-02-3,10369301E-02A8 =1.75807516E-021,39466338E-02A10 = =-5,58445698E-03-3,99677246E-03A12 =1,13377631E-037.8419546E-04A14 =-1,51914297E-04-1,10431217E-04A16 =1,34600086E-051,14734835E-05A18=-7,51191754E-07-8,89261992E-07A20 =2,11395375E-085,12447223E-08A22 =2,07651848E-10-2,15860299E-09A24 =-4,235333424E-116,43102922E-11A26 =1,61216012E-12-1,27855425E-12A28 =-2,87990119E-141,51670748E-14A30 =2,08528425E-16-8,09842501E-17In the 9th embodiment, the equation of aspherical surface profiles of the above lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in Table 9C are the same as those in the 1st embodiment with corresponding values for the 9th embodiment, so an explanation thereof will not be given again.In addition, these parameters can be calculated from Table 9A and Table 9B as the following values, and satisfy the following conditions:f [mm]3,83R1 / R16-0,41Fno2,66R2 / R16-0,12HFOV [grade]82,9R2 / R131,00FOV [Grade]165,8R3 / R44,39TL×Fno / ImgH7,58R15 / R40,432×ImgH / TD0,74R7 / R8-0,72BL / f0,25(R7+R8) / (R7-R8)-0,16f / f6-0,16(R15+R16) / (R15-R16)-1,29f5 / f80,77V3 / N336,47f / f56-0,88ET1 / CT11,47|f / f2|+|f / f3|0,47ET3 / ET63,08f / f1+f / f5+f / f8-1,72SAG1R2 / CT11,96SL / TL0,41Yc71 / Yi810,87Dr1r6 / SD1,56ImgH / Y4R1+Y1R1 / Y4R110,57CT2 / CT85,30Y1R1 / Y8R21,39(T230T45) / T340,15Y7R1 / Y6R2+Y6R1 / Y5R22,83(CT2+CT3) / (CT4+CT5+CT6+CT7+CT8)1,34--10. EmbodimentFIG. 19 is a schematic view of an image capturing unit according to the 10th embodiment of the present disclosure. FIG. 20 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 10th embodiment. In FIG. 19, the image capturing unit 10 includes the capturing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The detecting optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element E1, a second lens element E2, a diaphragm S1, a third lens element E3, an aperture diaphragm ST, a fourth lens element E4, a diaphragm S2, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9, and an image surface IMG. The sensing optical lens assembly includes eight lens elements (E1, E2, E3, E4, E5, E6, E7 and E8), with no additional lens element being disposed between each of the adjacent eight lens elements. Between each of the adjacent lens elements of the eight lens elements of the sensing optical lens assembly, there is an air gap in a triaxial region.The first lens element E1 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface, both of which are spherical.The second lens element E2 having positive refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The second lens element E2 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The image-side surface of the second lens element E2 has an inflection point.The third lens element E3 having positive refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The third lens element E3 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the third lens element E 3 has an inflection point.The fourth lens element E4 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The fourth lens element E4 is made of a plastic material and has an object-side surface and an image-side surface both aspherical.The fifth lens element E5 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The fifth lens element E5 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.The sixth lens element E6 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The sixth lens element E6 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has an inflection point. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis portion thereof.The seventh lens element E7 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The seventh lens element E7 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the seventh lens element E7 has three inflection points. The image-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.The eighth lens element E8 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The eighth lens element E8 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the eighth lens element E8 has two inflection points. The image-side surface of the eighth lens element E8 has three inflection points. The image-side surface of the eighth lens element E8 has a critical point in an off-axis portion thereof.The filter E9 is made of glass material and is located between the eighth lens element E8 and the image surface IMG. It has no influence on the focal length of the detecting optical lens assembly. The image sensor IS is disposed on or near the image surface IMG of the sensing optical lens assembly.The detailed optical data of the 10th embodiment are listed in Table 10A and the aspherical surface data in Table 10B below.Surface # #Radius of curvatureThickness: ThicknessMaterialIndex indexAbbe #Focal length0ObjectInfinityInfinity1Lens 111,8211(SPH)1,301Glass Glass1,68344,5-7,0123,2549(SPH)3,1463Lens 2-19,1750(ASP)1,756Plastic is a plastic material1,63923,512,624-5,8753(ASP)-0,2685Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,4236Lens 3-10,3905(ASP)1,888Plastic is a plastic material1,54456,016,807-5,1747(ASP)0,5408Aperture DiaphragmPlano-0,0569Lens 44,0413(ASP)0,836Plastic is a plastic material1,54456,04,6210-6,1491(ASP)-0,10511Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,14012Lens 543,0344(ASP)0,520Plastic is a plastic material1,66919,5-6,17133,7508(ASP)0,91214Lens 65,9216(ASP)0,560Glass Glass1,54456,0-99,37155,1592(ASP)0,57616Lens 77,3724(ASP)1,130Plastic is a plastic material1,54456,06,6017-6,6139(ASP)0,95218Lens 8-4,4914(ASP)0,560Plastic is a plastic material1,61426,0-5,311912,4494(ASP)0,60020FilterPlano0,210Glass Glass1,51764,2-21Plano0,18222Image ImagePlano-Note: The reference wavelength is 587.6 nm (d-line).The effective radius of the aperture S1 (surface 5) is 2.394 mm.The effective radius of the aperture S2 (surface 11) is 1.251 mm.Surface # #3467k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-2,84979207E-039,59823444E-036,66229581 E-03-7,52690835E-03A6 =4,36345464E-06-2,89810856E-03-4,3697780E-031,11233307E-03A8 =5,36640653E-056,43893981E-049,90062324E-041,26991356E-04A10 = =-2,75808035E-05-8,27818683E-05-1,64336297E-04-9,47390045E-06A12 =7,14774573E-06-1,86454602E-068,61963594E-06-1,41388453E-04A14 =-1,076909515E-064,02878446E-068,38293952E-061,10444245E-04A16 =9.50950683E-08-9,15282154E-07-3,60016176E-06-4,10239237E-05A18=-4,29805448E-099.60579520E-087.02576181E-078,50947444E-06A20 =6,61114516E-11-3,95322579E-09-6,9254356E-08-9,48982034E-07A22 =--2,801123292E-094,45633482E-08Surface # #9101213k = k0.00000E+000.00000E+000.00000E+00-8.52103E+00A4 =-4,37953799E-03-1,00363173E-02-2,61786838E-024,45631662E-04A6 =1,43488163E-038,83833736E-031,62781488E-024,63435789E-03A8 =-1,79339471E-03-1,11928636E-02-1,63332741E-02-2,22640839E-03A10 = =1,06732608E-038,21393897E-031,58689306E-028,81625290E-04A12 =-3,36050187E-04-3,21709394E-03-1,10179222E-02-1,59743174E-04A14 =-4,55254417E-045,07399903E-03-2,16462589E-05A16 =---1,43563309E-031,08818957E-05A18=--1,8569142E-04-7,16717228E-07Surface # #14151617k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-2,32553960E-02-3,421637E-02-1,54674918E-027.8254806E-03A6 =1,31021924E-021,56665203E-024,9360212E-033,67457399E-04A8 =-7,50232731E-03-6,64063864E-03-2,15771822E-03-1,01665178E-03A10 = =3,39157678E-032,29012997E-038,48552961E-045,31354153E-04A12 =-1,11137092E-03-5,96849912E-04-2,53136627E-04-1,51695390E-04A14 =2,47870714E-041,14080634E-045,18034980E-052,52850352E-05A16 =-3,55485966E-05-1,56920853E-05-7.02882056E-06-2,36415052E-06A18=2,94247071E-061,50286862E-066,17390753E-078,36683051E-08A20 =-1,06967796E-07-9,45984272E-08-3,3611462E-086,36560919E-09A22 =-3,50604440E-091,02892551E-09-9,53994794E-10A24 =--5,78959777E-11-1,3531681E-115,20875461E-11A26 =----1,40492817E-12A28 =---1,55187403E-14Surface # #1819k = k-8,09969E-010.00000E+00A4 =1,31584629E-028,39834999E-03A6 =-5,83558165E-03-8,57618065E-03A8 =8,31331387E-043,08250973E-03A10 = =1,56724205E-04-7,29432501E-04A12 =-8 86064944E-051,21540898E-04A14 =1.75904652E-05-1,45475586E-05A16 =-2,01623894E-061,25601576E-06A18=1,47597579E-07-7,78645292E-08A20 =-7,09545106E-093,41799180E-09A22 =2,2171S939E-10-1,03311787E-10A24 =-4,28396325E-122,03946735E-12A26 =4,54202957E-14-2,36218635E-14A28 =-1,92269657E-161,21548551E-16In the 10th embodiment, the equation of aspherical surface profiles of the above lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in Table 10C are the same as those in the 1st embodiment with corresponding values for the 10th embodiment, so no further explanation will be given in this respect.In addition, these parameters can be calculated from Table 10A and Table 10B as the following values, and satisfy the following conditions:f [mm]3,52R1 / R160,95Fno2,43R2 / R160,26HFOV [grade]82,4R2 / R130,44FOV [Grade]164,8R3 / R43,26TL×Fno / ImgH6,16R15 / R40,762×ImgH / TD0,84R7 / R8-0,66BL / f0,28(R7+R8) / (R7-R8)-0,21f / f6-0,04(R15+R16) / (R15-R16)-0,47f5 / f81,16V3 / N336,27f / f56-0,63ET1 / CT11,46|f / f2|+|f / f3|0,49ET3 / ET62,56f / f1+f / f5+f / f8-1,73SAG1R2 / CT11,93SL / TL0,44Yc71 / Yi810,83Dr1r6 / SD1,37ImgH / Y4R1+Y1R1 / Y4R110,00CT2 / CT83,14Y1R1 / Y8R21,25(T230T45) / T340,39Y7R1 / Y6R2+Y6R1 / Y5R22,83(CT2+CT3) / (CT4+CT5+CT6+CT7+CT8)1,01--11. EmbodimentFIG. 21 is a schematic view of an image capturing unit according to the 11th embodiment of the present disclosure. FIG. 22 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 11th embodiment. In FIG. 21, the image capturing unit 11 includes the capturing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The detecting optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element E1, a second lens element E2, a diaphragm S1, a third lens element E3, an aperture diaphragm ST, a fourth lens element E4, a diaphragm S2, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9, and an image surface IMG. The sensing optical lens assembly includes eight lens elements (E1, E2, E3, E4, E5, E6, E7 and E8), with no additional lens element being disposed between each of the adjacent eight lens elements. Between each of the adjacent lens elements of the eight lens elements of the sensing optical lens assembly, there is an air gap in a triaxial region.The first lens element E1 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the first lens element E 1 has an inflection point.The second lens element E2 having positive refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The second lens element E2 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical.The third lens element E3 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The third lens element E3 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The image-side surface of the third lens element E3 has two inflection points. The image-side surface of the third lens element E3 has two critical points in an off-axis portion thereof.The fourth lens element E4 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The fourth lens element E4 is made of a plastic material and has an object-side surface and an image-side surface both aspherical.The fifth lens element E5 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The fifth lens element E5 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The image-side surface of the fifth lens element E5 has an inflection point.The sixth lens element E6 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The sixth lens element E6 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has three inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis portion thereof.The seventh lens element E7 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The seventh lens element E7 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The image-side surface of the seventh lens element E7 has an inflection point. The object-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof. The image-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.The eighth lens element E8 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The eighth lens element E8 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the eighth lens element E8 has two inflection points. The image-side surface of the eighth lens element E8 has three inflection points. The object-side surface of the eighth lens element E8 has two critical points in an off-axis portion thereof. The image-side surface of the eighth lens element E8 has a critical point in an off-axis portion thereof.The filter E9 is made of glass material and is located between the eighth lens element E8 and the image surface IMG. It has no influence on the focal length of the detecting optical lens assembly. The image sensor IS is disposed on or near the image surface IMG of the sensing optical lens assembly.The detailed optical data of the 11th embodiment are listed in Table 11A and the aspherical surface data in Table 11B below.Surface # #Radius of curvatureThickness: ThicknessMaterialIndex indexAbbe #Focal length0ObjectInfinityInfinity1Lens 121,7987(ASP)1,412Glass Glass1,58961,3-8,1323,8336(ASP)4,0153Lens 2-7,4118(ASP)2,495Plastic is a plastic material1,54456,0101,574-7,3104(ASP)-0,1515Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,5386Lens 34,1590(ASP)2,220Plastic is a plastic material1,51156,89,15731,0341(ASP)0,2138Aperture DiaphragmPlano0,2579Lens 45,1835(ASP)1,041Plastic is a plastic material1,5355,84,3310-3,8297(ASP)0,05411Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,13612Lens 5-36,3264(ASP)0,330Plastic is a plastic material1,6521,8-5,48133,9611(ASP)0,92014Lens 66,9824(ASP)0,500Plastic is a plastic material1,54456,0-24,00154,4345(ASP)0,45016Lens 74,1457(ASP)0,921Plastic is a plastic material1,55144,813,93178,3052(ASP)1,00618Lens 8-70,4647(ASP)0,748Plastic is a plastic material1,69716,3-15,201912,5317(ASP)0,58020FilterPlano0,210Glass Glass1,51764,2-21Plano0,20822Image ImagePlano-Note: The reference wavelength is 587.6 nm (d-line).The effective radius of the aperture S1 (surface 5) is 2.837 mm.The effective radius of the aperture S2 (surface 11) is 1.307 mm.Surface # #1234k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-3,67843189E-05-8,29993991E-04-1,43207149E-03-2,06620420E-03A6 =2,0369515E-051,246753664E-041,96101199E-041,30903401E-03A8 =-9,38866609E-07-1,49490241E-057,35816525E-06-5,10342063E-04A10 = =1,61108042E-081,57780616E-06-1,35104093E-051,32743977E-04A12 =-9,8331222E-11-8,48064008E-083,44207607E-06-2,33519463E-05A14 =---4,63580681E-072,72744841E-06A16 =--3,629499819E-08-2,00801352E-07A18=---1,55197222E-098,38384738E-09A20 =--2,79734730E-11-1,5055736E-10Surface # #67910k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-5,45061444E-03-9.46577180E-03-1,29760392E-02-8,68621469E-04A6 =1,33379906E-03-6,60021057E-032,92690226E-04-1,31488723E-02A8 =-8,29354400E-042,33107284E-025,56211663E-041,15115517E-02A10 = =2,33956287E-04-3,72133349E-02-1,52952585E-04-5,933844484E-03A12 =-2,93521620E-053,7373881E-028,35674021E-051,72568545E-03A14 =-4,02655493E-06-2,35952929E-02--2,04266908E-04A16 =2,22858283E-069,13479842E-03--A18=-3,27556052E-07-1,98164182E-03--A20 =1,73911694E-081.85120082E-04--Surface # #12131415k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-2,19452001E-02-1,88973869E-02-2,88200037E-02-5,46685527E-02A6 =-5,53460806E-03-4,09518787E-041,78348479E-023,04342564E-02A8 =-7,24127477E-034,04047482E-03-1,06169371E-02-1,66693545E-02A10 = =3,069865881E-02-2,76332810E-035,48490676E-037,79026461E-03A12 =-4,14791776E-021.0517057E-03-2,22940581E-03-2,77227958E-03A14 =3,12993001E-02-2,68133643E-046,59373367E-047,12378576E-04A16 =-1,40089330E-024,45814750E-05-1,36205427E-04-1,29793363E-04A18=3,46808989E-03-3,60139097E-061,90039295E-051,65395512E-05A20 =-3,65708589E-04-4,99995766E-09-1,70199946E-06-1,438858585E-06A22 =--8.82553207E-088,13144153E-08A24 =---2,01533930E-09-2,6917052E-09A26 =---3,96062888E-11Surface # #16171819k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-3,29821891E-02-1,05668076E-02-9,27241706E-032,60374262E-03A6 =1,40766081E-026,65266285E-03-2,37741562E-03-9,84982741E-03A8 =-6,51096169E-03-2,48236899E-032,97063503E-034,74876482E-03A10 = =2,19930808E-034,73474536E-04-1,13413160E-03-1,30761771E-03A12 =-5,13242646E-04-2,97137327E-052,48524613E-042,35763925E-04A14 =8,23360187E-05-6,96122385E-06-3,55584674E-05-2,94289657E-05A16 =-9.0905790595E-062.04035016E-063,48434969E-062,607796004E-06A18=6,85346695E-07-2,61433622E-07-2,37819707E-07-1,65275668E-07A20 =-3,445356228E-082,02666008E-081,12871309E-087,43620396E-09A22 =1,09723948E-09-1,00387268E-09-3,65040161E-10-2,31682398E-10A24 =-1,98459441E-113,11568364E-117,66927066E-124,74591111E-12A26 =1,53157190E-13-5,53366258E-13-9,43320643E-14-5,742222530E-14A28 =-4,29774964E-155,15436333E-163,10557212E-16In the 11th embodiment, the equation of aspherical surface profiles of the above lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in Table 11C are the same as those given in the 1st embodiment, with corresponding values for the 11th embodiment, so no further explanation will be given in this respect.In addition, these parameters can be calculated from Table 11A and Table 11B as the following values, and satisfy the following conditions:f [mm]3,81R1 / R161,74Fno2,61R2 / R160,31HFOV [grade]86,5R2 / R130,92FOV [Grade]173,0R3 / R41,01TL×Fno / ImgH7,84R15 / R49,642×ImgH / TD0,71R7 / R8-1,35BL / f0,26(R7+R8) / (R7-R8)0,15f / f6-0,16(R15+R16) / (R15-R16)0,70f5 / f80,36V3 / N337,59f / f56-0,91ET1 / CT11,98|f / f2|+|f / f3|0,45ET3 / ET62,76f / f1+f / f5+f / f8-1,41SAG1R2 / CT11,95SL / TL0,41Yc71 / Yi810,91Dr1r6 / SD1,65ImgH / Y4R1+Y1R1 / Y4R110,14CT2 / CT83,34Y1R1 / Y8R21,46(T230T45) / T341,23Y7R1 / Y6R2+Y6R1 / Y5R22,95(CT2+CT3) / (CT4+CT5+CT6+CT7+CT8)1,33--12. EmbodimentFIG. 23 is a schematic view of an image capturing unit according to the 12th embodiment of the present disclosure. FIG. 24 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 12th embodiment. In FIG. 23, the image capturing unit 12 includes the capturing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The detecting optical lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element E1, a second lens element E2, a diaphragm S1, a third lens element E3, an aperture diaphragm ST, a fourth lens element E4, a diaphragm S2, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a diaphragm S3, an eighth lens element E8, a filter E9, and an image surface IMG. The sensing optical lens assembly includes eight lens elements (E1, E2, E3, E4, E5, E6, E7 and E8), with no additional lens element being disposed between each of the adjacent eight lens elements. Between each of the adjacent lens elements of the eight lens elements of the sensing optical lens assembly, there is an air gap in a triaxial region.The first lens element E1 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the first lens element E 1 has an inflection point. The object-side surface of the first lens element E1 has a critical point in an off-axis region thereof. The object-side surface of the first lens element E1 has at least one convex shape in the off-axis portion thereof.The second lens element E2 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The second lens element E2 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical.The third lens element E3 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The third lens element E3 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The image-side surface of the third lens element E3 has two inflection points. The image-side surface of the third lens element E3 has two critical points in an off-axis portion thereof.The fourth lens element E4 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface convex in a multiaxial portion thereof. The fourth lens element E4 is made of a plastic material and has an object-side surface and an image-side surface both aspherical.The fifth lens element E5 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The fifth lens element E5 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The image-side surface of the fifth lens element E5 has an inflection point.The sixth lens element E6 having negative refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The sixth lens element E6 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has two inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis portion thereof.The seventh lens element E7 having positive refractive power has an object-side surface convex in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The seventh lens element E7 is made of a plastic material and has an object-side surface and an image-side surface both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The image-side surface of the seventh lens element E7 has an inflection point. The object-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof. The image-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.The eighth lens element E8 having negative refractive power has an object-side surface concave in a triaxial portion thereof and an image-side surface concave in a multiaxial portion thereof. The eighth lens element E8 is made of a plastic material and has object and image side surfaces both aspherical. The object-side surface of the eighth lens element E8 has two inflection points. The image-side surface of the eighth lens element E8 has three inflection points. The image-side surface of the eighth lens element E8 has a critical point in an off-axis portion thereof.The filter E9 is made of glass material and is located between the eighth lens element E8 and the image surface IMG. It has no influence on the focal length of the detecting optical lens assembly. The image sensor IS is disposed on or near the image surface IMG of the sensing optical lens assembly.The detailed optical data of the 12th embodiment are listed in Table 12A and the aspherical surface data in Table 12B below.Surface # #Radius of curvatureThickness: ThicknessMaterialIndex indexAbbe #Focal length0ObjectInfinityInfinity1Lens 1- 833,3333(ASP)1,700Glass Glass1,52 660,2-9,7925,1892(ASP)3,0563Lens 2-15,3469(ASP)2,463Plastic is a plastic material1,54 456,0-223,434-18,5578(ASP)0,0965Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,7806Lens 33,5716(ASP)2,430Plastic is a plastic material1,51 156,87,76727,8091(ASP)0,5048Aperture DiaphragmPlano0,0069Lens 44,9557(ASP)0,950Plastic is a plastic material1,53 456,04,5110-4,3803(ASP)-0,09211Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,12712Lens 5-26,8899(ASP)0,373Plastic is a plastic material1,63 923,5-5,59134,1420(ASP)1,20314Lens 66,8988(ASP)0,539Plastic is a plastic material1,51 556,4-25,02154,3750(ASP)0,33016Lens 74,0763(ASP)0,932Plastic is a plastic material1,55 144,813,99177,9511(ASP)0,50018Aperture Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm DiaphragmPlano0,72019Lens 8-49,6274(ASP)0,531Plastic is a plastic material1,58 728,3-12,97209,0328(ASP)0,58021FilterPlano0,210Glass Glass1,51 764,2-22Plano0,22023Image ImagePlano-Note: The reference wavelength is 587.6 nm (d-line).The effective radius of the aperture S1 (surface 5) is 3.059 mm.The effective radius of the aperture S2 (surface 11) is 1.166 mm.The effective radius of the aperture S3 (surface 18) is 4.636 mm.Surface # #1234k = k-9.90000E+01-4,84795E-010.00000E+000.00000E+00A4 =7.28939536E-049,78457666E-04-1,0778627E-03-7,79752460E-04A6 =-2,06854332E-04-5,40882072E-042,08221335E-053,17365278E-04A8 =3,30995075E-051,50199445E-044,56652739E-05-8,41634451E-05A10 = =-2,91665789E-06-2,15837864E-05-1,8072222E-054,44499910E-06A12 =1,63986238E-072,38645538E-062,97256479E-062,58292695E-06A14 =-6,31592862E-09-2,17439462E-07-2,66006429E-07-6,93629596E-07A16 =1,72363579E-101,38641914E-081,36623474E-088,36179531E-08A18=-3,37324839E-12-5,09168406E-10-3,80762065E-10-5,57299832E-09A20 =4,71298013E-148,06460960E-124,48193705E-121,99053099E-10A22 =-4,59770833E-16---2,98183546E-12A24 =2,98204813E-18---A26 =-1,15870997E-20---A28 =2,04789521E-23---Surface # #67910k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-3,63198126E-03-9,85318635E-03-1,29256391E-022,30352235E-04A6 =4,21398785E-04-1,52772718E-031,59119936E-03-7.08233618E-03A8 =-5,42809443E-046,60414539E-03-5,20715325E-041,80052489E-03A10 = =3,17140634E-04-7.87093094E-039,25149562E-041,91110490E-03A12 =-1,45278314E-046.02431100E-03-2,34656264E-04-1,52960048E-03A14 =4,80256069E-05-2,76473992E-03-2,69704251E-04A16 =-1,06509192E-056,46492654E-04--A18=1,48667527E-06-1,18672668E-05--A20 =-1,16903425E-07-2,67749856E-05--A22 =3,94271113E-094,05169735, E-06--Surface # #12131415k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-2,80637386E-02-2,80735741E-02-2,13852105E-02-4,67092218E-02A6 =1,94152356E-021,5040439E-028,83810484E-032,00473791E-02A8 =-5,54051733E-02-9,03060582E-03-2,99173925E-03-7,46409197E-03A10 = =1,12733190E-011,21883560E-033,33392525E-042.0236668E-03A12 =-1,52708891E-014,75561168E-032,31768166E-04-3,57549031E-04A14 =1,34294694E-01-5,49193188E-03-1,38964567E-043,16018109E-05A16 =-7,37946110E-022,87460253E-033,76661786E-051,11656182E-06A18=2,28853596E-02-7,61706862E-04-5,98301390E-06-6,62561896E-07A20 =-3,05171991E-038,25991741E-055,69039159E-078,15566682E-08A22 =---3,00599328E-08-5,11832011E-09A24 =--6,79438435E-101,66372142E-10A26 =----2,19205706E-12Surface # #16171920k = k0.00000E+000.00000E+000.00000E+000.00000E+00A4 =-3,12312355E-02-9,75099900E-03-1,21516363E-021,04761985E-02A6 =1,19208198E-028,27336716E-03-4,12190650E-03-1,71152755E-02A8 =-4,46032237E-03-3,61795030E-035,20434242E-038,20466724E-03A10 = =1,10716236E-038,62564976E-04-2,04169883E-03-2,33305070E-03A12 =-1,58176775E-04-1,18715897E-044,55229785E-044,38969591E-04A14 =7.69653407E-068,16927812E-06-6,61265166E-05-5,73248288E-05A16 =1,38939436E-069.37570968E-086,61039773E-065,30728601E-06A18=-3,08992765E-07-7,61276644E-08-4,64384490E-07-3,50133297E-07A20 =2,86419774E-087,64445926E-092,29169799E-081,63169790E-08A22 =-1,47340797E-09-4,12573146E-10-7,78283874E-10-5,23771528E-10A24 =4,10606898E-111,31737278E-111,73221476E-111,09999142E-11A26 =-4,8574512E-13-2,34701678E-13-2,27447447E-13-1,35871486E-13A28 =-1,80450617E-151,33528667E-157,47691734E-16In the 12th embodiment, the equation of aspherical surface profiles of the above lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in Table 12C are the same as those given in the 1st embodiment with corresponding values for the 12th embodiment, so no further explanation will be given in this respect.In addition, these parameters can be calculated from Table 12A and Table 12B as the following values, and satisfy the following conditions:f [mm]4,61R1 / R16-92,26Fno2,73R2 / R160,57HFOV [grade]67,4R2 / R131,27FOV [Grade]134,8R3 / R40,83TL×Fno / ImgH8,62R15 / R42,672×ImgNH / TD0,67R7 / R8-1,13BL / f0,22(R7+R8) / (R7-R8)0,06f / f6-0,18(R15+R16) / (R15-R16)0,69f5 / f80,43V3 / N337,57f / f56-1,08ET1 / CT11,77|f / f2|+|f / f3|0,61ET3 / ET62,87f / f1+f / f5+f / f8-1,65SAG1R2 / CT11,26SL / TL0,39Yc71 / Yi811,02Dr1r6 / SD1,72ImgH / Y4R1+Y1R1 / Y4R111,23CT2 / CT84,64Y1R1 / Y8R21,58(T230T45) / T341,79Y7R1 / Y6R2+Y6R1 / Y5R23,16(CT2+CT3) / (CT4+CT5+CT6+CT7+CT8)1,47--13. EmbodimentFIG. 25 is a perspective view of an image capturing unit according to the 13th embodiment of the present disclosure. In this embodiment, an image capturing unit 100 is a camera module including a lens unit 101, a driving device 102, an image sensor 103, and an image stabilizer 104. The lens unit 101 includes the detecting optical lens assembly disclosed in the first embodiment, a barrel, and a holding member (whose reference numerals are omitted) for holding the detecting optical lens assembly. However, the lens unit 101 may alternatively be provided with the detecting optical lens assembly disclosed in other embodiments of the present disclosure, and the present disclosure is not limited thereto. The imaging light converges in the lens unit 101 of the image capturing unit 100 to generate an image with the driving device 102 used for image focusing on the image sensor 103, and the generated image is then digitally transmitted to another electronic component for further processing.The drive device 102 may have an autofocus function, and various drive configurations may be achieved through the use of voice coil motors (VCM), microelectromechanical systems (MEMS), piezoelectric systems, or shape memory alloys. The driving device 102 is favorable for obtaining a better imaging position of the lens unit 101 so that a clear image of the imaged object can be captured by the lens unit 101 at different distances from the object. The image sensor 103 (for example, CCD or CMOS), which may have high photosensitivity and low noise, is disposed on the image surface of the detecting optical lens assembly to achieve higher image quality.The image stabilizer 104, such as an accelerometer, gyro sensor, and Hall effect sensor, is configured to cooperate with the drive device 102 to provide optical image stabilization (OIS). The driving device 102 cooperating with the image stabilizer 104 is effective to compensate for rocking and tilting movements of the lens unit 101 to reduce motion blur during exposure. In some cases, the compensation may be done by electronic image stabilization (EIS) with image processing software, thereby improving image quality in motion or poor lighting conditions.14. EmbodimentFIG. 26 is a perspective view of an electronic device according to the 14th embodiment of the present disclosure. FIG. 27 is another perspective view of the electronic device in FIG. 26.In this embodiment, an electronic device 200 is a smartphone including the image acquisition unit 100 disclosed in the 13th embodiment, an image acquisition unit 100 a, an image acquisition unit 100 b, an image acquisition unit 100 c, and a display unit 201. As shown in FIG. 26, the image capturing unit 100, the image capturing unit 100 a, and the image capturing unit 100 bare disposed on the same side of the electronic device 200 and face the same side, and each of the image capturing units 100, 100 a, and 100 bhas a single focal point. As shown in FIG. 27, the image capturing unit 100 cand the display unit 201 are disposed on the opposite side of the electronic device 200, so that the image capturing unit 100 cmay be a front-facing camera of the electronic device 200 for capturing selfies, but the present disclosure is not limited thereto. Moreover, each of the image capturing units 100 a, 100 b, and 100 cmay include the capturing optical lens assembly of the present disclosure and have a similar configuration to the image capturing unit 100. Specifically, each of the image capturing units 100 a, 100 b, and 100 cmay include a lens unit, a driving device, an image sensor, and an image stabilizer, and each of the lens units may include a capturing optical lens assembly such as the capturing optical lens assembly of the present disclosure, a barrel, and a holding member for holding the capturing optical lens assembly.The image capturing unit 100 is a wide-angle image capturing unit, the image capturing unit 100 ais a tele image capturing unit, the image capturing unit 100 bis an ultra-wide-angle image capturing unit, and the image capturing unit 100 cis a wide-angle image capturing unit. In this embodiment, the image capturing units 100, 100 a, and 100 bhave different fields of view, so that the electronic device 200 may have different magnification ratios to meet the requirements of the optical zoom functionality. In addition, as shown in FIG. 27, the image capturing unit 100 cmay have a non-circular opening, and the lens barrel or the lens elements in the image capturing unit 100 cmay have one or more cut edges at positions of the outer diameter thereof to correspond to the non-circular opening. Therefore, it is preferable to further reduce the length of the image capturing unit 100 calong a single axis, thereby reducing the overall size of the lens, increasing the area ratio of the display unit 201 with respect to the electronic device 200, reducing the thickness of the electronic device 200, and achieving compactness of the overall module. In this embodiment, the electronic device 200 includes a plurality of image capturing units 100, 100 a, 100 b, and 100 c, but the present disclosure is not limited to the number and arrangement of the image capturing units.15. EmbodimentFIG. 28 is a perspective view of an electronic device according to the 15th embodiment of the present disclosure. FIG. 29 is another perspective view of the electronic device in FIG. 28, FIG. 30 is a block diagram of the electronic device in FIG. 28.In this embodiment, an electronic device 300 is a smartphone including the image acquisition unit 100 disclosed in the 13th embodiment, an image acquisition unit 100 d, an image acquisition unit 100 e, an image acquisition unit 100 f, an image acquisition unit 100 g, a flash module 301, a focusing aid module 302, an image signal processor 303, a display module 304, and an image software processor 305. The image capturing unit 100 and the image capturing unit 100 dare arranged on the same side of the electronic device 300. The focusing aid module 302 may be a laser distance meter or a time of flight (Time of Flight) module, but the present disclosure is not limited thereto. The image capturing unit 100 e, the image capturing unit 100 f, the image capturing unit 100 g, and the display module 304 are disposed on the opposite side of the electronic device 300, and the display module 304 may be a user interface, so that the image capturing units 100 e, 100 f, 100 gmay be front-facing cameras of the electronic device 300 for capturing selfies, but the present disclosure is not limited thereto. Moreover, each of the image capturing units 100 d, 100 e, 100 f, and 100 gmay include the capturing optical lens assembly of the present disclosure and have a similar configuration to the image capturing unit 100. Specifically, each of the image capturing units 100 d, 100 e, 100 f, and 100 gmay include a lens unit, a driving device, an image sensor, and an image stabilizer, and each of the lens units may include a capturing optical lens assembly such as the capturing optical lens assembly of the present disclosure, a barrel, and a holding member for holding the capturing optical lens assembly.The image acquisition unit 100 is a wide-angle image acquisition unit, the image acquisition unit 100 dis an ultra-wide-angle image acquisition unit, the image acquisition unit 100 eis a wide-angle image acquisition unit, the image acquisition unit 100 fis an ultra-wide-angle image acquisition unit, and the image acquisition unit 100 gis a time-of-flight image acquisition unit. In this embodiment, the image capturing units 100 and 100 dhave different fields of view, so that the electronic device 300 may have different magnification ratios to meet the requirements of the optical zoom functionality. In addition, the image acquisition unit 100 gmay determine depth information of the imaged object. In this embodiment, the electronic device 300 includes a plurality of image capturing units 100, 100 d, 100 e, 100 f, and 100 g, but the present disclosure is not limited to the number and arrangement of the image capturing units.When a user captures images of an object 306, the light beams converge in the image capturing unit 100 or the image capturing unit 100 dto generate images, and the flash module 301 is activated for light augmentation. The focusing aid module 302 detects the distance of the imaged object 306 to achieve rapid automatic focusing. The image signal processor 303 is configured to optimize the captured image to improve image quality. The light beam emitted by the focusing aid module 302 may be either conventional infrared light or laser light. Moreover, the light beams may converge in the image capturing unit 100 e, 100 f, or 100 gto generate images. The display module 304 may include a touch screen, and the user may interact with the display module 304 and the image software processor 305, which has multiple functions for image capture and full image processing. Alternatively, the user may capture images via a physical key. The image processed by the image software processor 305 may be displayed on the display module 304.16. EmbodimentFIG. 31 is a perspective view of an electronic device according to the 16th embodiment of the present disclosure.In this embodiment, an electronic device 400 is a smartphone including the image acquisition unit 100 disclosed in the 13th embodiment, an image acquisition unit 100 h, an image acquisition unit 100 i, a flash module 401, a focusing aid module, an image signal processor, a display module, and an image software processor (not shown). The image capturing unit 100, the image capturing unit 100 h, and the image capturing unit 100 iare disposed on the same side of the electronic device 400, while the display module is disposed on the opposite side of the electronic device 400. Moreover, each of the image capturing units 100 hand 100 imay include the capturing optical lens assembly of the present disclosure and have a similar configuration to the image capturing unit 100, and the details thereof will not be given again.The image capturing unit 100 is a wide-angle image capturing unit, the image capturing unit 100 his a tele image capturing unit, and the image capturing unit 100 iis an ultra-wide-angle image capturing unit. In this embodiment, the image capturing units 100, 100 h, and 100 ihave different fields of view, so that the electronic device 400 can have different magnification ratios to meet the requirements of the optical zoom functionality. Moreover, the image capturing unit 100 hmay be a tele image capturing unit having a light folding element configuration such that the total length of the path of the image capturing unit 100 his not limited by the thickness of the electronic device 400. In addition, the configuration of the image capturing unit 100 hhaving light folding elements may be similar to, for example, any of the structures shown in FIGS. 35 to 37, and reference may be made to the foregoing descriptions with respect to FIGS. 35 to 37, and the details thereof will not be given again. In this embodiment, the electronic device 400 includes a plurality of image capturing units 100, 100 h, and 100 i, but the present disclosure is not limited to the number and arrangement of the image capturing units. When a user captures images of an object, light beams converge in the image capturing unit 100, 100 h, or 100 ito generate images, and the flash module 401 is activated for light amplification. Moreover, the following processes are carried out in a similar manner to the above-mentioned embodiment, so that the details thereof will not be reproduced.17. EmbodimentFIG. 32 is a perspective view of an electronic device according to the 17th embodiment of the present disclosure.In this embodiment, an electronic device 500 is a smartphone including the image acquisition unit 100 disclosed in the 13th embodiment, an image acquisition unit 100 j, an image acquisition unit 100 k, an image acquisition unit 100 m, an image acquisition unit 100 n, an image acquisition unit 100 p, an image acquisition unit 100 q, an image acquisition unit 100 r, an image acquisition unit 100 s, a flash module 501, a focusing aid module, an image signal processor, a display module, and an image software processor (not illustrated). The image capturing units 100, 100 j, 100 k, 100 m, 100 n, 100 p, 100 q, 100 r, and 100 sare arranged on the same side of the electronic device 500, while the display module is arranged on the opposite side of the electronic device 500. Moreover, each of the image capturing units 100 j, 100 k, 100 m, 100 n, 100 p, 100 q, 100 r, and 100 smay include the capturing optical lens assembly of the present disclosure and have a similar configuration to the image capturing unit 100, and the details thereof will not be given again.The image capturing unit 100 is a wide-angle image capturing unit, the image capturing unit 100 jis a tele image capturing unit, the image capturing unit 100 kis a tele image capturing unit, the image capturing unit 100 mis a wide-angle image capturing unit, the image capturing unit 100 nis an ultra-wide-angle image capturing unit, the image capturing unit 100 pis an ultra-wide-angle image capturing unit, the image capturing unit 100 qis a tele image capturing unit, the image capturing unit 100 ris a tele image capturing unit, and the image capturing unit 100 sis a time-of-flight image capturing unit. In this embodiment, the image capturing units 100, 100 j, 100 k, 100 m, 100 n, 100 p, 100 q, and 100 rhave different fields of view, so that the electronic device 500 may have different magnification ratios to meet the requirements of the optical zoom functionality. Moreover, each of the image capturing units 100 jand 100 kmay be a tele image capturing unit having a light folding element configuration. Moreover, the light folding element configuration of each of the image capturing units 100 jand 100 kmay be similar to, for example, any of the structures shown in FIGS. 35 to 37, for which reference may be made to the foregoing descriptions with respect to FIGS. 35 to 37, and the details thereof will not be given again. In addition, the image acquisition unit 100 smay determine depth information of the imaged object. In this embodiment, the electronic device 500 includes a plurality of image capturing units 100, 100 j, 100 k, 100 m, 100 n, 100 p, 100 q, 100 r, and 100 s, but the present disclosure is not limited to the number and arrangement of the image capturing units. When a user takes images of a lens, the light beams converge in the image capturing unit 100, 100 j, 100 k, 100 m, 100 n, 100 p, 100 q, 100 r, or 100 sto generate images, and the flash module 501 is activated for light amplification. The following processes are performed in a similar manner to the above-mentioned embodiments, and the details thereof will not be repeated.The smartphone in multiple embodiments is only exemplary of illustrating the image capturing unit of the present disclosure installed in an electronic device, and the present disclosure is not limited thereto.The image capturing unit may be optionally applied to movable focus optical systems. Moreover, the capturing optical lens assembly of the image capturing unit is characterized by a good aberration correction capability and high image quality, and can be applied to 3D image capturing applications (three-dimensional image capturing) in products such as digital cameras, mobile devices, digital tablets, smart TVs, network monitoring devices, dashboard cameras, vehicle backup cameras, multiple camera devices, image recognition systems, motion-sensitive input devices, portable devices, and other electronic imaging devices.The foregoing description has been described for purposes of explanation with reference to specific embodiments. It should be noted that TABLES 1A-12C show different data of the various embodiments; however, the data of the various embodiments are from experiments. The embodiments were chosen and described in order to best explain the principles of the disclosure and its practical applications, and thus to enable others skilled in the art to best utilize the disclosure and various embodiments with various modifications as are suited to the particular use contemplated. The above-illustrated embodiments and the accompanying drawings are intended to be exemplary and not exhaustive or to limit the scope of the present disclosure to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings.

Claims

A detecting optical lens assembly comprising eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8), wherein the eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) are, in order from an object side to an image side along an optical path, a first lens element (E1), a second lens element (E2), a third lens element (E3), a fourth lens element (E4), a fifth lens element (E5), a sixth lens element (E6), a seventh lens element (E7) and an eighth lens element (E8), and wherein each of the eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) has an object-side surface facing the object side and an image-side surface facing the image side; wherein the first lens element (E1) has negative refractive power, the object-side surface of the fourth lens element (E4) is convex in a triaxial region thereof, the image-side surface of the fifth lens element (E5) is concave in a triaxial region thereof, the object-side surface of the seventh lens element (E7) has at least one inflection point (P), the eighth lens element (E8) has negative refractive power, and the object-side surface of the eighth lens element (E8) is concave in a multiaxial region thereof; wherein the detecting optical lens assembly further comprises an aperture stop (ST), an axial distance between the object-side surface of the first lens element (E1) and the image-side surface of the third lens element (E3) is Dr1r6, an axial distance between the aperture stop (ST) and the image-side surface of the eighth lens element (E8) is SD, an axial distance between the second lens element (E2) and the third lens element (E3) is T23, an axial distance between the third lens element (E3) and the fourth lens element (E4) is T34, an axial distance between the fourth lens element (E4) and the fifth lens element (E5) is T45, an Abbe number of the third lens element (E3) is V3, a refractive index of the third lens element (E3) is N3, and the following conditions are satisfied: 1.05<Dr1r6 / SD<2.00; 0,03 < ( T23+T45) / T34<5.00; and 17.00<V3 / N3<50.

00. The detecting optical lens assembly according to claim 1, wherein the object-side surface of the first lens element (E1) has at least one convex shape in an off-axis portion thereof, the fourth lens element (E4) has a positive refractive power, the seventh lens element (E7) has a positive refractive power, the object-side surface of the seventh lens element (E7) is convex in a par-axis portion thereof, and the object-side surface of the eighth lens element (E8) has at least one inflection point (P).The detecting optical lens assembly according to claim 1, wherein the image-side surface of the second lens element (E2) is convex in a multiaxial region thereof, the fifth lens element (E5) has negative refractive power, both the object-side surface and the image-side surface of at least one lens element of the detecting optical lens assembly are spherical, and at least one lens element of the detecting optical lens assembly is made of glass material.The detecting optical lens assembly according to claim 1, wherein an axial distance between the image-side surface of the eighth lens element (E8) and an image surface (IMG) is BL, a focal length of the detecting optical lens assembly is f, an axial distance between the aperture stop (ST) and the image surface (IMG) is SL, an axial distance between the object-side surface of the first lens element (E1) and the image surface (IMG) is TL, and the following conditions are satisfied: 0.08 < BL / f < 0.55 ; and 0.28 < SL / TL < 0.

62. The sensing optical lens assembly according to claim 1, wherein at least two lens elements of the sensing optical lens assembly are made of plastic material; wherein a central thickness of the second lens element (E2) is CT2, a central thickness of the eighth lens element (E8) is CT8, and the following condition is satisfied: 2.00 < CT2 / CT8 < 10.

00. The detecting optical lens assembly according to claim 1, wherein an axial distance between the object-side surface of the first lens element (E1) and an image surface (IMG) is TL, an F-number of the detecting optical lens assembly is Fno, a maximum image height of the detecting optical lens assembly is ImgH, and the following condition is satisfied: 4.80 < TL × Fno / ImgH < 9.

00. The detecting optical lens assembly according to claim 1, wherein a focal length of the detecting optical lens assembly is f, a composite focal length of the fifth lens element (E5) and the sixth lens element (E6) is f56, a radius of curvature of the object-side surface of the fourth lens element (E4) is R7, a radius of curvature of the image-side surface of the fourth lens element (E4) is R8, and the following conditions are satisfied: - 1.50 < f / f56 < - 0.30; and - 2.00 < ( R7 + R8) / ( R7 - R8) < 2.

00. The detecting optical lens assembly according to claim 1, wherein a focal length of the detecting optical lens assembly f is st, a focal length of the first lens element (E1) is f1, a focal length of the fifth lens element (E5) is f5, a focal length of the eighth lens element (E8) is f8, a radius of curvature of the object-side surface of the fourth lens element (E4) is R7, a radius of curvature of the image-side surface of the fourth lens element (E4) is R8, and the following conditions are satisfied: - 2.50 < f / f1 + f / f5 + f / f8 < - 1.00 ; and - 4.00 < R7 / R8 < 2.

50. The detecting optical lens assembly according to claim 1, wherein a radius of curvature of the object-side surface of the first lens element (E1) is R1, a radius of curvature of the image-side surface of the eighth lens element (E8) is R16, and the following condition is satisfied: - 2.50 < R1 / R16 < 5.

50. The detecting optical lens assembly according to claim 1, wherein a radius of curvature of the object-side surface of the second lens element (E2) is R3, a radius of curvature of the image-side surface of the second lens element (E2) is R4, and the following condition is satisfied: 0.10 < R3 / R4 < 25.

00. The detecting optical lens assembly according to claim 1, wherein a focal length of the detecting optical lens assembly is f, a focal length of the second lens element (E2) is f2, a focal length of the third lens element (E3) is f3, a maximum field of view of the detecting optical lens assembly is FOV, and the following conditions are satisfied: 0.03 < | f / f2 | + | f / f3 | < 1.00; and 140.0 degrees < FOV < 195.0 degrees. The capturing optical lens assembly according to claim 1, wherein a displacement parallel to an optical axis from an axial vertex on the image-side surface of the first lens element (E1) to a position of the maximum effective radius on the image-side surface of the first lens element (E1) is SAG1R2, a central thickness of the first lens element (E1) is CT1, a maximum effective radius of the object-side surface of the first lens element (E1) is Y1R1, a maximum effective radius of the image-side surface of the eighth lens element (E8) is Y8R2, and the following conditions are satisfied: 1.35 < SAG1R2 / CT1 < 2.50 ; _ner16_ and 1.00<Y1R1 / Y8R2<2.

00. The detecting optical lens assembly according to claim 1, wherein a distance parallel to an optical axis between a position of the maximum effective radius of the object-side surface of the third lens element (E3) and a position of the maximum effective radius of the image-side surface of the third lens element (E3) is ET3, a distance parallel to the optical axis between a position of the maximum effective radius of the object-side surface of the sixth lens element (E6) and a position of the maximum effective radius of the image-side surface of the sixth lens element (E6) is ET6, a maximum image height of the detecting optical lens assembly is ImgH, a maximum effective radius of the object-side surface of the first lens element (E1) is Y1R1, a maximum effective radius of the object-side surface of the fourth lens element (E4) is Y4R1 and the following conditions are satisfied: 1.60<ET3 / ET6<5.00; and 4.50< ImH / Y4R1+Y1R1 / Y4R1<16.

00. An image capturing unit (100) comprising: the capturing optical lens assembly according to claim 1; and an image sensor (103) disposed on an image surface (IMG) of the capturing optical lens assembly.An electronic device (200) comprising: the image capturing unit (100) according to claim 14.A detecting optical lens assembly comprising eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8), wherein the eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) are, in order from an object side to an image side along an optical path, a first lens element (E1), a second lens element (E2), a third lens element (E3), a fourth lens element (E4), a fifth lens element (E5), a sixth lens element (E6), a seventh lens element (E7) and an eighth lens element (E8), and wherein each of the eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) has an object-side surface facing the object side and an image-side surface facing the image side; wherein the object-side surface of the second lens element (E2) is concave in a triaxial region thereof, the image-side surface of the second lens element (E2) is convex in a multiaxial region thereof, the object-side surface of the fourth lens element (E4) is convex in a multiaxial region thereof, the fifth lens element (E5) has a negative refractive power, and the object-side surface of the seventh lens element (E7) has at least one inflection point (P); wherein the detecting optical lens assembly further comprises an aperture stop (ST), an axial distance between the object-side surface of the first lens element (E1) and the image-side surface of the third lens element (E3) is Dr1r6, an axial distance between the aperture stop (ST) and the image-side surface of the eighth lens element (E8) is SD, a radius of curvature of the image-side surface of the first lens element (E1) is R2, a radius of curvature of the image-side surface of the eighth lens element (E8) is R16, a maximum field of view of the detecting optical lens assembly is FOV, and the following conditions are satisfied: 1.05<Dr1r6 / SD<2.00; - 1,00 < R2 / R16<1.30; and 130.0 degrees < FOV < 200.0 degrees. The detecting optical lens assembly according to claim 16, wherein said first lens element (E1) has a negative refractive power, said object-side surface of said seventh lens element (E7) is convex in a triaxial region thereof, and an air gap is present in a multiaxial region between each of all adjacent lens elements of said detecting optical lens assembly.The detecting optical lens assembly according to claim 16, wherein the eighth lens element (E8) has negative refractive power; wherein an axial distance between the second lens element (E2) and the third lens element (E3) is T23, an axial distance between the third lens element (E3) and the fourth lens element (E4) is T34, an axial distance between the fourth lens element (E4) and the fifth lens element (E5) is T45, and the following condition is satisfied: 0.03 < ( T23 + T45 ) / T34 < 5.

00. The detecting optical lens assembly according to claim 16, wherein the object-side surface of the eighth lens element (E8) is concave in a triaxial portion thereof, and at least one lens element of the detecting optical lens assembly is made of glass material and has both the object-side surface and the image-side surface, both of which are spherical.The detecting optical lens assembly according to claim 16, wherein a focal length of the fifth lens element (E5) is f5, a focal length of the eighth lens element (E8) is f8, a radius of curvature of the image-side surface of the second lens element (E2) is R4, a radius of curvature of the object-side surface of the eighth lens element (E8) is R15, and the following conditions are satisfied: - 1.0 < f5 / f8 < 3.00; and - 1.00 < R15 / R4 < 20.

00. The detecting optical lens assembly according to claim 16, wherein a focal length of the detecting optical lens assembly is f, a focal length of the sixth lens element (E6) is f6, a radius of curvature of the object-side surface of the eighth lens element (E8) is R15, the radius of curvature of the image-side surface of the eighth lens element (E8) is R16, and the following conditions are satisfied: - 0.50 < f / f6 < 0.30; and - 7.50 < ( R15 + R16) / ( R15 - R16) < 1.

50. The capturing optical lens assembly according to claim 16, wherein a central thickness of the second lens element (E2) is CT2, a central thickness of the third lens element (E3) is CT3, a central thickness of the fourth lens element (E4) is CT4, a central thickness of the fifth lens element (E5) is CT5, a central thickness of the sixth lens element (E6) is CT6, a central thickness of the seventh lens element (E7) is CT7, a central thickness of the eighth lens element (E8) is CT8, and the following condition is satisfied: 0.70 < (CT2 + CT3 ) / (CT4 + CT5 + CT6 + CT7 + CT8 ) < 1.

80. The detecting optical lens assembly according to claim 16, wherein the image-side surface of the fifth lens element (E5) is concave in a triaxial region thereof; wherein an axial distance between the aperture stop (ST) and an image surface (IMG) is SL, an axial distance between the object-side surface of the first lens element (E1) and the image surface (IMG) is TL, and the following condition is satisfied: 0.25 < SL / TL < 0.

75. The detecting optical lens assembly according to claim 16, wherein the radius of curvature of the image-side surface of the first lens element (E1) is R2, a radius of curvature of the object-side surface of the seventh lens element (E7) is R13, and the following condition is satisfied: - 0.10 < R2 / R13 < 2.

00. The detecting optical lens assembly according to claim 16, wherein the image-side surface of the fourth lens element (E4) is convex in a triaxial region thereof; wherein an axial distance between the image-side surface of the eighth lens element (E8) and an image surface (IMG) is BL, a focal length of the detecting optical lens assembly is f, and the following condition is satisfied: 0.08 < BL / f < 0.

55. The detecting optical lens assembly according to claim 16, wherein a maximum image height of the detecting optical lens assembly is ImgH, an axial distance between the object-side surface of the first lens element (E1) and the image-side surface of the eighth lens element (E8) is TD, and the following condition is satisfied: 0.50 <2 × ImgH / TD < 1.

10. The capturing optical lens assembly according to claim 16, wherein a maximum effective radius of the image-side surface of the fifth lens element (E5) is Y5R2, a maximum effective radius of the object-side surface of the sixth lens element (E6) is Y6R1, a maximum effective radius of the image-side surface of the sixth lens element (E6) is Y6R2, a maximum effective radius of the object-side surface of the seventh lens element (E7) is Y7R1, and the following condition is satisfied: 2.30 < Y7R1 / Y6R2 + Y6R1 / Y5R2 < 4.

00. The detecting optical lens assembly according to claim 16, wherein a vertical distance between an off-axis critical point (C) closest to an optical axis on the object-side surface of the seventh lens element (E7) and the optical axis is Yc71, a vertical distance between an inflection point (P) closest to the optical axis on the object-side surface of the eighth lens element (E8) and the optical axis is Yi81, a distance parallel with the optical axis between a position of the maximum effective radius of the object-side surface of the first lens element (E1) and a position of the maximum effective radius of the image-side surface of the first lens element (E1) is ET1, a central thickness of the first lens element (E1) is CT1, and the following conditions are satisfied: 0.65<Yc71 / Yi81<1.40; and 1.10<ET1 / CT1<2.

20. The detecting optical lens assembly according to claim 16, wherein the axial distance between the object-side surface of the first lens element (E1) and the image-side surface of the third lens element (E3) is Dr1r6, the axial distance between the aperture stop (ST) and the image-side surface of the eighth lens element (E8) is SD, an axial distance between the second lens element (E2) and the third lens element (E3) is T23, an axial distance between the third lens element (E3) and the fourth lens element (E4) is T34, an axial distance between the fourth lens element (E4) and the fifth lens element (E5) is T45, an Abbe number of the third lens element (E3) is V3, a refractive index of the third lens element (E3) N3, the radius of curvature of the image-side surface of the first lens element (E1) is R2, the radius of curvature of the image-side surface of the eighth lens element (E8) is R16, the maximum field of view of the detecting optical lens assembly is FOV, and the following conditions are satisfied: 1.29 ≤ Dr1r6 / SD ≤ 1.67; 0,12 ≤ (T23 + T45) / T34 ≤ 1.23; 36,22 ≤ V3 / N3 ≤ 38.79; - 0,12 ≤ R2 / R16 ≤ 0.57; and 153.8 degrees ≤ FOV ≤ 173.04 degrees.

Images