Optical image taking system group, image taking device and electronic device

Abstract

This invention provides an optical imaging system assembly, an imaging device, and an electronic device, comprising seven lenses. The seven lenses, arranged sequentially from the object side to the image side along the optical path, are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. Each of the seven lenses has an object-side surface facing the object side and an image-side surface facing the image side. The seventh lens has negative refractive power, and its object-side surface is concave near the optical axis. At least one lens in the optical imaging system assembly has at least one inflection point on either its object-side or image-side surface at an off-axis location. Under certain conditions, the optical imaging system assembly can simultaneously meet the requirements of wide viewing angle, miniaturization, large imaging area, and high image quality. The imaging device includes the aforementioned optical imaging system assembly, and the electronic device includes the aforementioned imaging device.

Description

Technical Field

[0001] The present invention relates to an optical imaging system group, an imaging device, and an electronic device, particularly an optical imaging system group and an imaging device suitable for an electronic device. Background Art

[0002] With the continuous improvement of semiconductor process technology, the performance of electronic photosensitive elements has been enhanced, and pixels can reach a smaller size. Therefore, an optical lens with high imaging quality has become an indispensable part.

[0003] With the rapid development of technology, the application range of electronic devices equipped with optical lenses is more extensive, and the requirements for optical lenses are also more diverse. Since it is relatively difficult for existing optical lenses to balance the requirements such as imaging quality, sensitivity, aperture size, volume, or viewing angle, the present invention provides an optical lens to meet the requirements. Summary of the Invention

[0004] The present invention provides an optical imaging system group, an imaging device, and an electronic device. Among them, the optical imaging system group includes seven lenses arranged in sequence from the object side to the image side along the optical path. When specific conditions are met, the optical imaging system group provided by the present invention can simultaneously meet the requirements of a wide viewing angle, miniaturization, a large imaging surface, and high imaging quality.

[0005] The present invention provides an optical imaging system group, including seven lenses. The seven lenses are, in sequence from the object side to the image side along the optical path, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens. The seven lenses respectively have an object-side surface facing the object side and an image-side surface facing the image side. The image-side surface of the sixth lens is concave near the optical axis. The seventh lens has a negative refractive power, and the object-side surface of the seventh lens is concave near the optical axis. At least one of the object-side surface and the image-side surface of at least one lens in the optical imaging system group has at least one inflection point at an off-axis position. The maximum imaging height of the optical imaging system group is ImgH, the distance from the image-side surface of the seventh lens to the imaging surface on the optical axis is BL, the focal length of the optical imaging system group is f, the radius of curvature of the object-side surface of the seventh lens is R13, and the radius of curvature of the image-side surface of the seventh lens is R14, which satisfy the following conditions:

[0006] 7.50 < ImgH / BL; and

[0007] -5.0 < f / R13 + f / R14 < -2.8.

[0008] The present invention further provides an optical imaging system group, including seven lenses. The seven lenses are, in order from the object side to the image side along the optical path, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The seven lenses respectively have an object-side surface facing the object side and an image-side surface facing the image side. The image-side surface of the first lens is concave near the optical axis. The image-side surface of the sixth lens is concave near the optical axis. The seventh lens has a negative refractive power. The object-side surface of the seventh lens is concave near the optical axis, and the image-side surface of the seventh lens is convex near the optical axis. At least one surface of at least one lens in the optical imaging system group has at least one inflection point off the axis. The maximum imaging height of the optical imaging system group is ImgH, the distance on the optical axis from the image-side surface of the seventh lens to the imaging surface is BL, the radius of curvature of the image-side surface of the seventh lens is R14, and the focal length of the optical imaging system group is f, which satisfies the following conditions:

[0009] 7.50 < ImgH / BL; and

[0010] -10 < R14 / f < -0.70.

[0011] )]]The present invention further provides an optical imaging system group, including seven lenses. The seven lenses are, in order from the object side to the image side along the optical path, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The seven lenses respectively have an object-side surface facing the object side and an image-side surface facing the image side. The image-side surface of the first lens is concave near the optical axis. The object-side surface of the sixth lens is convex near the optical axis. The seventh lens has a negative refractive power. The object-side surface of the seventh lens is concave near the optical axis, and the image-side surface of the seventh lens is convex near the optical axis. At least one surface of at least one lens in the optical imaging system group has at least one inflection point off the axis. The maximum imaging height of the optical imaging system group is ImgH, the distance on the optical axis from the image-side surface of the seventh lens to the imaging surface is BL, the radius of curvature of the image-side surface of the seventh lens is R14, and the focal length of the seventh lens is f7, which satisfies the following conditions:

[0012] 7.50 < ImgH / BL; and

[0013] 0.75 < R14 / f7 < 9.5.

[0014] The present invention provides an imaging device, which includes the aforementioned optical imaging system group and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the optical imaging system group.

[0015] The present invention provides an electronic device, which includes the aforementioned imaging device.

[0016] When ImgH / BL meets the above conditions, the imaging surface can be increased and the back focal length can be compressed to reduce the total length.

[0017] When f / R13+f / R14 meet the above conditions, the surface shape and refractive power of the seventh lens can be adjusted, which helps to increase the viewing angle and image height.

[0018] When R14 / f meets the above conditions, the surface shape and refractive power of the seventh lens can be adjusted, which helps to increase the viewing angle and image height.

[0019] When R14 / f7 meets the above conditions, the surface shape and refractive power of the seventh lens can be adjusted, which helps to increase the viewing angle and image height.

[0020] The foregoing description of the invention and the following description of the embodiments are intended to demonstrate and explain the spirit and principles of the invention, and to provide a further explanation of the claims. Attached Figure Description

[0021] Figure 1 A schematic diagram of an image-capturing device according to a first embodiment of the present invention is shown.

[0022] Figure 2 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the first embodiment.

[0023] Figure 3 A schematic diagram of an image-capturing device according to a second embodiment of the present invention is shown.

[0024] Figure 4 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the second embodiment.

[0025] Figure 5 A schematic diagram of an image-capturing device according to a third embodiment of the present invention is shown.

[0026] Figure 6 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the third embodiment.

[0027] Figure 7 A schematic diagram of an image-capturing device according to a fourth embodiment of the present invention is shown.

[0028] Figure 8 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fourth embodiment.

[0029] Figure 9 A schematic diagram of an image-capturing device according to a fifth embodiment of the present invention is shown.

[0030] Figure 10 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fifth embodiment.

[0031] Figure 11 A schematic diagram of an image-capturing device according to a sixth embodiment of the present invention is shown.

[0032] Figure 12 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the sixth embodiment.

[0033] Figure 13 A schematic diagram of an image-capturing device according to a seventh embodiment of the present invention is shown.

[0034] Figure 14 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the seventh embodiment.

[0035] Figure 15 A schematic diagram of an imaging device according to the eighth embodiment of the present invention is shown.

[0036] Figure 16 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the eighth embodiment.

[0037] Figure 17 A schematic diagram of an image-capturing device according to a ninth embodiment of the present invention is shown.

[0038] Figure 18 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the ninth embodiment.

[0039] Figure 19 A schematic diagram of an image-capturing device according to the tenth embodiment of the present invention is shown.

[0040] Figure 20 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the tenth embodiment.

[0041] Figure 21 A perspective schematic diagram of an imaging device according to the eleventh embodiment of the present invention is shown.

[0042] Figure 22 A perspective view of one side of an electronic device according to the twelfth embodiment of the present invention is shown.

[0043] Figure 23 Draw Figure 22 A three-dimensional diagram of the other side of the electronic device.

[0044] Figure 24 Draw Figure 22 System block diagram of an electronic device.

[0045] Figure 25 A perspective view of one side of an electronic device according to the thirteenth embodiment of the present invention is shown.

[0046] Figure 26A perspective view of one side of an electronic device according to the fourteenth embodiment of the present invention is shown.

[0047] Figure 27 A schematic diagram illustrating parameters Y11, Y42, Y61, Yc61, Y62, Yc62, Y71, Yc71, Y72, Ang72c, Ang72s, ImgH, the inflection points of each lens, and some critical points of the sixth and seventh lenses according to the first embodiment of the present invention.

[0048] Figure 28 A schematic diagram illustrating one configuration of the optical path reversing element according to the present invention in an optical imaging system assembly is shown.

[0049] Figure 29 A schematic diagram illustrating another configuration of the optical path reversing element according to the present invention in an optical imaging system assembly is shown.

[0050] Figure 30 A schematic diagram illustrating one configuration of two optical path deflection elements in an optical imaging system assembly according to the present invention is shown.

[0051] Figure Labels

[0052] 1,2,3,4,5,6,7,8,9,10,100,100a,100b,100c,100d,100e,100f,100g,100h,100i,100j,100k,100m,100n,100p: Image capturing device

[0053] 101: Imaging Lens

[0054] 102: Drive unit

[0055] 103: Electronic photosensitive element

[0056] 104: Image Stabilization Module

[0057] 200, 300, 400: Electronic devices

[0058] 201, 301, 401: Flash module

[0059] 202: Focusing Assist Module

[0060] 203: Image Signal Processor

[0061] 204: Display Module

[0062] 205: Image Software Processor

[0063] 206: Subject

[0064] C: Critical point

[0065] P: Inversion point

[0066] OA1: First optical axis

[0067] OA2: Second optical axis

[0068] OA3: Third optical axis

[0069] LF: Optical path switching element

[0070] LF1: First optical path switching element

[0071] LF2: Second optical path switching element

[0072] LG: Lens Group

[0073] ST: Aperture

[0074] S1, S2, S3: Aperture

[0075] E1: First lens

[0076] E2: Second lens

[0077] E3: Third Lens

[0078] E4: Fourth Lens

[0079] E5: Fifth Lens

[0080] E6: Sixth Lens

[0081] E7: Seventh Lens

[0082] E8: Filter element

[0083] IMG: Imaging Surface

[0084] IS: Electronic photosensitive element

[0085] CR: Key Ray

[0086] RL: Extension line

[0087] RP: Plane

[0088] TP: Cross-section

[0089] Ang72c: The angle between the principal ray at maximum field of view, the ray exiting the seventh lens from its image-side surface, and the optical axis.

[0090] Ang72s: The angle between the tangent plane of the optically effective region boundary of the image-side surface of the seventh lens and the plane perpendicular to the optical axis.

[0091] ImgH: Maximum imaging height of the optical imaging system assembly

[0092] Y11: Maximum effective radius of the object-side surface of the first lens

[0093] Y42: Maximum effective radius of the image-side surface of the fourth lens

[0094] Y61: Maximum effective radius of the object-side surface of the sixth lens

[0095] Y62: Maximum effective radius of the image-side surface of the sixth lens

[0096] Y71: Maximum effective radius of the object-side surface of the seventh lens

[0097] Y72: Maximum effective radius of the image-side surface of the seventh lens

[0098] Yc61: The perpendicular distance between the concave critical point on the object-side surface of the sixth lens and the optical axis.

[0099] Yc62: The perpendicular distance between the convex critical point of the image-side surface of the sixth lens and the optical axis.

[0100] Yc71: The perpendicular distance between the convex critical point on the object-side surface of the seventh lens and the optical axis. Detailed Implementation

[0101] The optical imaging system comprises seven lenses, which are arranged sequentially from the object side to the image side along the optical path as a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. Each of the seven lenses has an object-side surface facing the object side and an image-side surface facing the image side.

[0102] The first lens may have positive refractive power; thereby, it helps to reduce the volume of the object-side end of the optical imaging system. The object-side surface of the first lens may be convex near the optical axis; thereby, the direction of light entering can be adjusted, which helps to increase the viewing angle. The image-side surface of the first lens may be concave near the optical axis; thereby, the surface shape of the first lens can be adjusted, which helps to correct aberrations such as astigmatism.

[0103] The image-side surface of the second lens can be concave near the optical axis. This allows for adjustment of the light travel direction, which helps to reduce the outer diameter of the object-side end of the optical imaging system assembly.

[0104] The sixth lens may have a positive refractive power; thereby, it helps to compress the volume at the image-forming side end of the optical imaging system. The object-side surface of the sixth lens may be convex near the optical axis; thereby, the surface shape and refractive power of the sixth lens can be adjusted, which helps to compress the volume and correct aberrations. The object-side surface of the sixth lens may have at least one concave critical point off the axis; thereby, the surface shape of the sixth lens can be adjusted, which helps to reduce surface reflection and correct off-axis aberrations. Among them, the vertical distance between the concave critical point of the object-side surface of the sixth lens and the optical axis is Yc61, the maximum effective radius of the object-side surface of the sixth lens is Y61, and the object-side surface of the sixth lens may have at least one concave critical point off the axis that satisfies the following condition: 0.20 < Yc61 / Y61 < 0.55. Thereby, the surface shape of the sixth lens can be further adjusted to improve image quality. The image-side surface of the sixth lens may be concave near the optical axis; thereby, the surface shape and refractive power of the sixth lens can be adjusted, which helps to correct aberrations. The image-side surface of the sixth lens may have at least one convex critical point off the axis; thereby, the surface shape of the sixth lens can be adjusted, which helps to correct off-axis aberrations such as image curvature. Among them, the vertical distance between the convex critical point of the image-side surface of the sixth lens and the optical axis is Yc62, the maximum effective radius of the image-side surface of the sixth lens is Y62, and the image-side surface of the sixth lens may have at least one convex critical point off the axis that satisfies the following condition: 0.20 < Yc62 / Y62 < 0.50. Thereby, the surface shape of the sixth lens can be further adjusted to correct aberrations. Please refer to Figure 27 , a schematic diagram showing the parameters Y61, Yc61, Y62, Yc62 in the first embodiment of the present invention and the critical point C of the sixth lens E6 off the axis.

[0105] The seventh lens has a negative refractive power; thereby, it helps to adjust the back focal length. The object-side surface of the seventh lens is concave near the optical axis; thereby, the surface shape and refractive power of the seventh lens can be adjusted, which helps to improve the image quality of the wide viewing field and increase the imaging surface. The object-side surface of the seventh lens may have at least one convex critical point off the axis; thereby, the surface shape of the seventh lens can be adjusted, which helps to improve the image quality of the wide viewing field. Among them, the vertical distance between the convex critical point of the object-side surface of the seventh lens and the optical axis is Yc71, the maximum effective radius of the object-side surface of the seventh lens is Y71, and the object-side surface of the seventh lens may have at least one convex critical point off the axis that satisfies the following condition: 0.80 < Yc71 / Y71 < 0.97. Thereby, the surface shape of the seventh lens can be further adjusted to improve image quality. The image-side surface of the seventh lens may be convex near the optical axis; thereby, the angle of light incident on the imaging surface can be adjusted, which helps to increase the imaging surface. Please refer to Figure 27 , a schematic diagram showing the parameters Y71, Yc71 in the first embodiment of the present invention and the convex critical point C of the object-side surface of the seventh lens E7 off the axis. Figure 27Illustrated are partial critical points C at an off-axis position on the object-side surface, image-side surface of the sixth lens E6, and object-side surface of the seventh lens E7 in the first embodiment of the present invention as an exemplary illustration. However, in this embodiment and other embodiments of the present invention, each lens may also have one or more critical points at an off-axis position.

[0106] In the optical imaging system group disclosed in the present invention, there may be at least one lens having at least one reverse inflection point at an off-axis position on at least one of its object-side surface and image-side surface. Thereby, the degree of surface variation of the lens can be increased, which helps to correct aberrations and compress the volume of the lens. Among them, there may also be at least two lenses in the optical imaging system group, each having at least one reverse inflection point at an off-axis position on at least one of its object-side surface and image-side surface. Among them, there may also be at least three lenses in the optical imaging system group, each having at least one reverse inflection point at an off-axis position on at least one of its object-side surface and image-side surface. Please refer to Figure 27 , which shows a schematic diagram of the reverse inflection points P of each lens at an off-axis position according to the first embodiment of the present invention.

[0107] The maximum imaging height of the optical imaging system group is ImgH (which can be half of the total diagonal length of the effective sensing area of the electronic photosensitive element), and the distance from the image-side surface of the seventh lens to the imaging plane on the optical axis is BL, which satisfies the following condition: 7.50 < ImgH / BL; thereby, the imaging plane can be increased, and the back focal length can be compressed to compress the total length. Among them, the following condition can also be satisfied: 8.50 < ImgH / BL. Among them, the following condition can also be satisfied: 9.50 < ImgH / BL. Among them, the following condition can also be satisfied: ImgH / BL < 50.0; thereby, it is possible to avoid the imbalance between the image height and the back focal length affecting the imaging quality. Among them, the following condition can also be satisfied: ImgH / BL < 40.0. Among them, the following condition can also be satisfied: ImgH / BL < 30.0. Please refer to Figure 27 , which shows a schematic diagram of the parameter ImgH according to the first embodiment of the present invention.

[0108] The focal length of the optical imaging system group is f, the radius of curvature of the object-side surface of the seventh lens is R13, and the radius of curvature of the image-side surface of the seventh lens is R14, which can satisfy the following condition: -5.0 < f / R13 + f / R14 < -2.8. Thereby, the surface shape and refractive power of the seventh lens can be adjusted, which helps to increase the viewing angle and image height. Among them, the following condition can also be satisfied: -4.5 < f / R13 + f / R14 < -3.0.

[0109] The radius of curvature of the image-side surface of the seventh lens is R14, and the focal length of the optical imaging system group is f, which can satisfy the following conditions: -10 < R14 / f < -0.70. Thereby, the surface shape and refractive power of the seventh lens can be adjusted, which helps to increase the viewing angle and image height. Among them, the following conditions can also be satisfied: -7.5 < R14 / f < -0.90. Among them, the following conditions can also be satisfied: -5.5 < R14 / f < -1.1.

[0110] The radius of curvature of the image-side surface of the seventh lens is R14, and the focal length of the seventh lens is f7, which can satisfy the following conditions: 0.75 < R14 / f7 < 9.5. Thereby, the surface shape and refractive power of the seventh lens can be adjusted, which helps to increase the viewing angle and image height. Among them, the following conditions can also be satisfied: 1.0 < R14 / f7 < 8.5. Among them, the following conditions can also be satisfied: 1.3 < R14 / f7 < 7.5. Among them, the following conditions can also be satisfied: 1.5 < R14 / f7 < 6.5.

[0111] The Abbe number of the first lens is V1, the Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, and the Abbe number of the fifth lens is V5, which can satisfy the following conditions: 1.4 < (V1 + V3) / (V2 + V4 + V5) < 4.0. Thereby, the distribution of lens materials can be adjusted, which helps to correct aberrations. Among them, the following conditions can also be satisfied: 1.8 < (V1 + V3) / (V2 + V4 + V5) < 3.0.

[0112] The distance between the sixth lens and the seventh lens on the optical axis is T67, and the distance from the image-side surface of the seventh lens to the imaging surface on the optical axis is BL, which can satisfy the following conditions: 1.9 < T67 / BL; Thereby, the lens distribution can be adjusted, which helps to increase the imaging surface and compress the back focal length. Among them, the following conditions can also be satisfied: 2.2 < T67 / BL. Among them, the following conditions can also be satisfied: 2.5 < T67 / BL. Among them, the following conditions can also be satisfied: T67 / BL < 20; Thereby, the position of the seventh lens can be adjusted, which helps to compress the total length and improve the image quality. Among them, the following conditions can also be satisfied: T67 / BL < 15. Among them, the following conditions can also be satisfied: T67 / BL < 10.

[0113] The radius of curvature of the image-side surface of the sixth lens is R12, and the radius of curvature of the object-side surface of the seventh lens is R13, which can satisfy the following conditions: 1.5 < (R12 - R13) / (R12 + R13) < 3.0. Thereby, the sixth lens and the seventh lens can cooperate with each other, which helps to correct aberrations. Among them, the following conditions can also be satisfied: 1.8 < (R12 - R13) / (R12 + R13) < 2.5.

[0114] The angle between the chief ray of the maximum field of view and the optical axis of the emergent ray from the image side surface of the seventh lens is Ang72c, which can satisfy the following condition: 40.0 degrees < |Ang72c| < 55.0 degrees. Thereby, the angle of the ray emerging from the seventh lens can be adjusted, which helps to increase the imaging surface. Please refer to Figure 27 , which shows a schematic diagram of the parameter Ang72c in the first embodiment of the present invention. Among them, the included angle between the extension line RL of the emergent ray of the chief ray CR of the maximum field of view from the image side surface of the seventh lens E7 and the optical axis is Ang72c.

[0115] The maximum effective radius of the object side surface of the first lens is Y11, and the maximum effective radius of the image side surface of the fourth lens is Y42, which can satisfy the following condition: 0.65 < Y11 / Y42 < 1.5. Thereby, the direction of the ray propagation can be adjusted, which helps to compress the outer diameter of the object side end of the optical imaging system group. Please refer to Figure 27 , which shows a schematic diagram of the parameters Y11 and Y42 in the first embodiment of the present invention.

[0116] The maximum effective radius of the object side surface of the first lens is Y11, and the maximum effective radius of the image side surface of the seventh lens is Y72, which can satisfy the following condition: 2.0 < Y72 / Y11 < 5.0. Thereby, the volume distribution of the optical imaging system group can be adjusted, and it helps to increase the viewing angle and the imaging surface. Please refer to Figure 27 , which shows a schematic diagram of the parameters Y11 and Y72 in the first embodiment of the present invention.

[0117] The focal length of the sixth lens is f6, the radius of curvature of the object side surface of the sixth lens is R11, and the radius of curvature of the image side surface of the sixth lens is R12, which can satisfy the following condition: 3.0 < |f6| / R11 + |f6| / R12. Thereby, the surface shape and refractive power of the sixth lens can be adjusted, which helps to correct the aberration. Among them, it can also satisfy the following condition: 3.5 < |f6| / R11 + |f6| / R12 < 15. Among them, it can also satisfy the following condition: 4.0 < |f6| / R11 + |f6| / R12 < 9.0.

[0118] The focal length of the optical imaging system group is f, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, and the focal length of the fifth lens is f5, which can satisfy the following condition: |f / f2| + |f / f3| + |f / f4| + |f / f5| < 1.8. Thereby, the refractive powers of the lenses can be coordinated with each other, which helps to balance the refractive power distribution of the optical imaging system group. Among them, it can also satisfy the following condition: |f / f2| + |f / f3| + |f / f4| + |f / f5| < 1.5.

[0119] The Abbe number of the first lens is V1, the Abbe number of the second lens is V2, and the Abbe number of the third lens is V3, which can satisfy the following condition: 5.0 < (V1 + V3) / V2 < 12. Thus, the materials at the object side end of the optical imaging system group can be coordinated with each other to correct chromatic aberration. Among them, the following condition can also be satisfied: 6.0 < (V1 + V3) / V2 < 9.0.

[0120] The thickness of the third lens on the optical axis is CT3, and the distance between the second lens and the third lens on the optical axis is T23, which can satisfy the following condition: 1.0 < CT3 / T23 < 2.7. Thus, the second lens and the third lens can be coordinated with each other, which helps to compress the volume of the object side end of the optical imaging system group.

[0121] The optical imaging system group disclosed in the present invention may further include one or more light-transmitting elements, and the light-transmitting elements may be disposed between the seventh lens and the imaging surface. The maximum imaging height of the optical imaging system group is ImgH, the maximum refractive index value among all the light-transmitting elements between the seventh lens and the imaging surface in the optical effective area is NEmax, and the distance between the image side surface of the seventh lens and the imaging surface on the optical axis is BL, which can satisfy the following condition: 14.0 < ImgH × NEmax / BL; thus, the imaging surface can be further enlarged and the back focal length can be compressed. Among them, the following condition can also be satisfied: 15.5 < ImgH × NEmax / BL. Among them, the following condition can also be satisfied: 17.0 < ImgH × NEmax / BL. Among them, the following condition can also be satisfied: ImgH × NEmax / BL < 80.0; thus, the configuration between the lens and the imaging surface can be adjusted, which helps to improve the assembly qualification rate. Among them, the following condition can also be satisfied: ImgH × NEmax / BL < 65.0. Among them, the following condition can also be satisfied: ImgH × NEmax / BL < 50.0. In the case where the optical imaging system group includes a single light-transmitting element disposed between the seventh lens and the imaging surface, the aforementioned NEmax is the refractive index of this single light-transmitting element. In the case where the optical imaging system group includes multiple light-transmitting elements disposed between the seventh lens and the imaging surface, the aforementioned NEmax is the maximum value among the refractive indices of these light-transmitting elements.

[0122] The focal length of the optical imaging system group is f, and the radius of curvature of the image side surface of the second lens is R4, which can satisfy the following condition: 0.20 < f / R4 < 1.4. Thus, the surface shape and refractive power of the second lens can be adjusted to correct aberrations such as astigmatism.

[0123] The focal length of the first lens is f1, and the thickness of the first lens on the optical axis is CT1, which can satisfy the following condition: 6.5 < f1 / CT1 < 15. Thus, the surface shape and refractive power of the first lens can be adjusted to compress the volume. Among them, the following condition can also be satisfied: 7.0 < f1 / CT1 < 13.

[0124] The aperture value (F-number) of the optical imaging system group is Fno, which satisfies the following conditions: 1.2 < Fno < 2.0. Thereby, a balance can be achieved between illuminance and depth of field.

[0125] Half of the maximum viewing angle in the optical imaging system group is HFOV, which satisfies the following conditions: 35.0 degrees < HFOV < 65.0 degrees. Thereby, the optical imaging system group can have the characteristic of a wide viewing angle and can avoid aberration such as distortion caused by an excessive viewing angle. Among them, the following conditions can also be satisfied: 42.0 degrees < HFOV < 55.0 degrees.

[0126] The angle between the tangent plane of the boundary of the optically effective area on the image side surface of the seventh lens and the plane perpendicular to the optical axis is Ang72s, which satisfies the following conditions: |Ang72s| < 20.0 degrees. Thereby, the surface shape of the seventh lens can be adjusted, which helps to improve the lens molding qualification rate. Please refer to Figure 27 , which shows a schematic diagram of the parameter Ang72s in the first embodiment of the present invention, where the angle between the tangent plane TP of the boundary of the optically effective area on the image side surface of the seventh lens E7 and the plane RP perpendicular to the optical axis is Ang72s.

[0127] The thickness of the fifth lens on the optical axis is CT5, the thickness of the sixth lens on the optical axis is CT6, and the distance between the fifth lens and the sixth lens on the optical axis is T56, which satisfies the following conditions: 0.75 < (CT5 + CT6) / T56 < 2.4. Thereby, the fifth lens and the sixth lens can cooperate with each other, which helps to correct aberration. Among them, the following conditions can also be satisfied: 1.0 < (CT5 + CT6) / T56 ≤ 2.01.

[0128] The distance from the object side surface of the first lens to the image side surface of the seventh lens on the optical axis is TD, and the distance from the image side surface of the seventh lens to the imaging surface on the optical axis is BL, which satisfies the following conditions: 9.5 < TD / BL; Thereby, the lens distribution and the back focal length can be adjusted, which helps to compress the back focal length. Among them, the following conditions can also be satisfied: TD / BL < 30; Thereby, the lens distribution and the back focal length can be adjusted, which helps to compress the total length.

[0129] The distance from the object side surface of the first lens to the imaging surface on the optical axis is TL, and the maximum imaging height of the optical imaging system group is ImgH, which satisfies the following conditions: 0.40 < TL / ImgH < 1.6. Thereby, a balance can be achieved between compressing the total length and increasing the imaging surface. Among them, the following conditions can also be satisfied: 0.60 < TL / ImgH < 1.4. Among them, the following conditions can also be satisfied: 0.80 < TL / ImgH < 1.2.

[0130] The focal length of the optical imaging system assembly is f, and the combined focal length of the second, third, and fourth lenses is f²³⁴, which satisfies the following condition: 4.5 < |f²³⁴ / f|. This allows adjustment of the lens refractive power, helping to balance the refractive power distribution at the object-side end of the optical imaging system assembly. It also satisfies the following condition: 5.5 < |f²³⁴ / f|.

[0131] The radius of curvature of the object-side surface of the first lens is R1, and the radius of curvature of the image-side surface of the first lens is R2, which can satisfy the following condition: -4.0 < (R1 + R2) / (R1 - R2) < -1.0. This allows adjustment of the surface shape of the first lens, which helps to reduce volume and correct aberrations. It can also satisfy the following condition: -3.6 < (R1 + R2) / (R1 - R2) < -1.4.

[0132] The various technical features in the optical imaging system group disclosed in the present invention can be combined and configured to achieve the corresponding effects.

[0133] In the optical imaging system assembly disclosed in this invention, the lens material can be glass or plastic. If the lens is made of glass, the degree of freedom in configuring the refractive power of the optical imaging system assembly can be increased, and the influence of external environmental temperature changes on imaging can be reduced. Glass lenses can be manufactured using techniques such as grinding or molding. If the lens material is plastic, production costs can be effectively reduced. Furthermore, spherical or aspherical (ASP) surfaces can be provided on the lens surface. Spherical lenses reduce manufacturing difficulty, while aspherical surfaces provide more controllable variables to reduce aberrations, decrease the number of lenses, and effectively reduce the overall length of the optical imaging system assembly of this invention. Further, aspherical surfaces can be manufactured by plastic injection molding or molding glass lenses.

[0134] In the optical imaging system group disclosed in this invention, if the lens surface is aspherical, it means that all or part of the optically effective area of ​​the lens surface is aspherical.

[0135] In the optical imaging system assembly disclosed in this invention, additives can be selectively added to any (or more) lens materials to produce light absorption or interference effects, thereby altering the lens's transmittance for specific wavelengths of light and reducing stray light and color shift. For example, the additives may filter out light in the 600 nm to 800 nm wavelength range to help reduce excess red or infrared light; or they may filter out light in the 350 nm to 450 nm wavelength range to reduce excess blue or ultraviolet light. Therefore, the additives can prevent specific wavelengths of light from interfering with imaging. Furthermore, the additives can be uniformly mixed into plastic and manufactured into lenses using injection molding technology. Additionally, the additives can also be deposited on the lens surface as a coating to provide the aforementioned effects.

[0136] In the optical imaging system group disclosed in this invention, if the lens surface is convex and the position of the convex surface is not defined, it means that the convex surface can be located near the optical axis of the lens surface; if the lens surface is concave and the position of the concave surface is not defined, it means that the concave surface can be located near the optical axis of the lens surface. If the refractive power or focal length of the lens is not defined in its region, it means that the refractive power or focal length of the lens can be the refractive power or focal length of the lens near the optical axis.

[0137] In the optical imaging system assembly disclosed in this invention, the inflection point of the lens surface refers to the boundary point where the curvature of the lens surface changes from positive to negative. The critical point of the lens surface refers to the point of tangency on the tangent line between a plane perpendicular to the optical axis and the lens surface, and the critical point is not located on the optical axis.

[0138] In the optical imaging system group disclosed in this invention, the imaging surface of the optical imaging system group can be a plane or a curved surface with any curvature, depending on the corresponding electronic photosensitive element, especially a curved surface with a concave surface facing the object side.

[0139] In the optical imaging system assembly disclosed in this invention, one or more imaging correction elements (such as planar elements) can be selectively disposed between the lens closest to the imaging surface and the imaging surface in the imaging optical path to achieve the effect of correcting image curvature (e.g., image warping). The optical properties of this imaging correction element, such as curvature, thickness, refractive index, position, and surface type (convex or concave, spherical or aspherical, diffractive surface, and Fresnel surface, etc.), can be adjusted according to the requirements of the imaging device. Generally, a preferred configuration of the imaging correction element is to place a thin plano-concave element with a concave surface in the object-side direction near the imaging surface.

[0140] In the optical imaging system assembly disclosed in this invention, at least one element with a deflecting optical path function, such as a prism or a mirror, can be selectively disposed between the subject and the imaging surface in the imaging optical path. This provides a higher degree of spatial flexibility in the spatial configuration of the optical imaging system assembly, allowing the thinner and lighter electronic device to be independent of the overall optical length of the optical imaging system assembly. For further explanation, please refer to... Figure 28 and Figure 29 ,in Figure 28 A schematic diagram illustrating an arrangement of the optical path reversing element according to the present invention in an optical imaging system assembly is shown. Figure 29 A schematic diagram illustrating another configuration of the optical path deflection element according to the present invention in an optical imaging system assembly is shown. For example... Figure 28 and Figure 29 As shown, the optical imaging system assembly can travel along the optical path from the subject (not shown) to the imaging plane IMG, and sequentially includes a first optical axis OA1, an optical path deflection element LF, and a second optical axis OA2, wherein the optical path deflection element LF can be as follows: Figure 28As shown, it is positioned between the subject and the lens group LG of the optical imaging system assembly, or as... Figure 29 The lens group LG is positioned between the imaging plane IMG and the optical imaging system assembly, as shown. Additionally, please refer to... Figure 30 A schematic diagram illustrating an arrangement of two optical path deflection elements according to the present invention in an optical imaging system assembly is shown, such as... Figure 30 As shown, the optical imaging system assembly can also travel along the light path from the subject (not shown) to the imaging surface IMG, and sequentially includes a first optical axis OA1, a first optical path reversing element LF1, a second optical axis OA2, a second optical path reversing element LF2, and a third optical axis OA3. The first optical path reversing element LF1 is positioned between the subject and the lens group LG of the optical imaging system assembly, and the second optical path reversing element LF2 is positioned between the lens group LG and the imaging surface IMG. Furthermore, the direction of light travel along the first optical axis OA1 can be as follows: Figure 30 The direction shown is the same as the direction of light travel along the third optical axis OA3. The optical imaging system assembly may also be optionally configured with more than three optical path deflection elements; the present invention is not limited to the type, number, and position of the optical path deflection elements disclosed in the accompanying drawings.

[0141] In the optical imaging system assembly disclosed in this invention, at least one aperture stop may be provided, which may be located in front of the first lens, between the lenses, or after the last lens. The aperture stop may be of the type such as a glare stop or a field stop, which can be used to reduce stray light and help improve image quality.

[0142] In the optical imaging system assembly disclosed in this invention, the aperture can be configured as a front aperture or a central aperture. A front aperture means the aperture is positioned between the subject and the first lens, while a central aperture means the aperture is positioned between the first lens and the imaging plane. A front aperture allows for a longer distance between the exit pupil and the imaging plane, resulting in a telecentric effect and increasing the efficiency of image reception by the CCD or CMOS sensor. A central aperture helps to expand the field of view of the optical imaging system assembly.

[0143] This invention may appropriately incorporate a variable aperture element, which can be a mechanical component or a light-regulating element, and whose aperture size and shape can be controlled electrically or by electrical signals. The mechanical component may include movable parts such as a blade assembly or a shielding plate; the light-regulating element may include a filter element, an electrochromic material, a liquid crystal layer, or other masking materials. This variable aperture element can enhance image adjustment capabilities by controlling the amount of light entering the image or the exposure time. Furthermore, this variable aperture element can also be the aperture of this invention, allowing image quality, such as depth of field or exposure speed, to be adjusted by changing the aperture value.

[0144] Based on the above implementation methods, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0145] <First Embodiment>

[0146] Please refer to Figures 1 to 2 ,in Figure 1 A schematic diagram of an image-capturing device according to a first embodiment of the present invention is shown. Figure 2 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the first embodiment. Figure 1 It is known that the image capturing device 1 includes an optical image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The optical image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a third lens E3, an aperture stop S2, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter element E8, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical image capturing system assembly includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interposed lenses between the lenses.

[0147] The first lens E1 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection off-axis, and its image-side surface also has a point of inflection off-axis.

[0148] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical, and its object-side surface has two inflection points off-axis.

[0149] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical, and its object-side surface has two inflection points off-axis.

[0150] The fourth lens E4 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has three inflection points off-axis, and its image-side surface has two inflection points off-axis.

[0151] The fifth lens E5 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has three inflection points off-axis.

[0152] The sixth lens E6 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, its image-side surface has one inflection point off-axis, its object-side surface has one concave critical point off-axis, and its image-side surface has one convex critical point off-axis.

[0153] The seventh lens E7 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, its image-side surface has two inflection points off-axis, and its object-side surface has a convex critical point off-axis.

[0154] The filter element E8 is made of glass and is located between the seventh lens E7 and the imaging surface IMG. It does not affect the focal length of the optical imaging system group.

[0155] The equations for the aspherical surfaces of the above lenses are expressed as follows:

[0156]

[0157] X: The displacement parallel to the optical axis from the intersection of the aspherical surface and the optical axis to a point on the aspherical surface at a distance Y from the optical axis;

[0158] Y: The perpendicular distance between a point on the aspherical curve and the optical axis;

[0159] R: Radius of curvature;

[0160] k: cone coefficient; and

[0161] Ai: The i-th order aspherical coefficient.

[0162] In the optical imaging system group of the first embodiment, the focal length of the optical imaging system group is f, the aperture value of the optical imaging system group is Fno, and half of the maximum angle of view in the optical imaging system group is HFOV, with the following values: f = 6.41 mm, Fno = 1.94, HFOV = 43.6 degrees.

[0163] The Abbe number of the first lens E1 is V1, the Abbe number of the second lens E2 is V2, the Abbe number of the third lens E3 is V3, the Abbe number of the fourth lens E4 is V4, and the Abbe number of the fifth lens E5 is V5. They satisfy the following condition: (V1+V3) / (V2+V4+V5)=2.08.

[0164] The Abbe number of the first lens E1 is V1, the Abbe number of the second lens E2 is V2, and the Abbe number of the third lens E3 is V3, which satisfies the following condition: (V1+V3) / V2=6.58.

[0165] The thickness of the fifth lens E5 on the optical axis is CT5, and the thickness of the sixth lens E6 on the optical axis is CT6. The distance between the fifth lens E5 and the sixth lens E6 on the optical axis is T56, which satisfies the following condition: (CT5+CT6) / T56=1.31. In this embodiment, the distance between two adjacent lenses on the optical axis refers to the distance between two adjacent mirror surfaces of the two adjacent lenses on the optical axis.

[0166] The thickness of the third lens E3 on the optical axis is CT3, and the distance between the second lens E2 and the third lens E3 on the optical axis is T23, which satisfies the following condition: CT3 / T23=1.31.

[0167] The distance between the sixth lens E6 and the seventh lens E7 on the optical axis is T67, and the distance from the image side surface of the seventh lens E7 to the imaging plane IMG on the optical axis is BL, which satisfies the following condition: T67 / BL=2.82.

[0168] The distance on the optical axis from the object-side surface of the first lens E1 to the image-side surface of the seventh lens E7 is TD, and the distance on the optical axis from the image-side surface of the seventh lens E7 to the imaging plane IMG is BL. They satisfy the following condition: TD / BL = 11.80.

[0169] The distance on the optical axis from the object-side surface of the first lens E1 to the imaging plane IMG is TL, and the maximum imaging height of the optical imaging system group is ImgH, which satisfies the following condition: TL / ImgH=1.12.

[0170] The radius of curvature of the object-side surface of the first lens E1 is R1, and the radius of curvature of the image-side surface of the first lens E1 is R2, which satisfies the following condition: (R1+R2) / (R1-R2)=-2.43.

[0171] The radius of curvature of the image-side surface of the sixth lens E6 is R12, and the radius of curvature of the object-side surface of the seventh lens E7 is R13. They satisfy the following condition: (R12-R13) / (R12+R13)=2.22.

[0172] The radius of curvature of the image-side surface of the seventh lens E7 is R14, and the focal length of the optical imaging system group is f, which satisfies the following condition: R14 / f=-1.76.

[0173] The radius of curvature of the image-side surface of the seventh lens E7 is R14, and the focal length of the seventh lens E7 is f7. It satisfies the following condition: R14 / f7=2.53.

[0174] The focal length of the optical imaging system group is f, the focal length of the second lens E2 is f2, the focal length of the third lens E3 is f3, the focal length of the fourth lens E4 is f4, and the focal length of the fifth lens E5 is f5. They satisfy the following condition: |f / f2|+|f / f3|+|f / f4|+|f / f5|=0.77.

[0175] The focal length of the optical imaging system group is f, and the combined focal length of the second lens E2, the third lens E3 and the fourth lens E4 is f234, which satisfies the following condition: |f234 / f|=19.24.

[0176] The focal length of the sixth lens E6 is f6, the radius of curvature of the object-side surface of the sixth lens E6 is R11, and the radius of curvature of the image-side surface of the sixth lens E6 is R12. They satisfy the following condition: |f6| / R11+|f6| / R12=6.97.

[0177] The focal length of the optical imaging system group is f, the radius of curvature of the object-side surface of the seventh lens E7 is R13, and the radius of curvature of the image-side surface of the seventh lens E7 is R14, which satisfies the following condition: f / R13+f / R14=-3.74.

[0178] The focal length of the optical imaging system group is f, and the radius of curvature of the image-side surface of the second lens E2 is R4, which satisfies the following condition: f / R4=0.63.

[0179] The focal length of the first lens E1 is f1, and the thickness of the first lens E1 on the optical axis is CT1, which satisfies the following condition: f1 / CT1=7.92.

[0180] The angle between the principal ray of the maximum field of view, the ray emitted from the image side surface of the seventh lens E7, and the optical axis is Ang72c, which satisfies the following condition: |Ang72c|=42.0 degrees.

[0181] The angle between the tangent plane of the optical effective area boundary of the image side surface of the seventh lens E7 and the plane perpendicular to the optical axis is Ang72s, which satisfies the following condition: |Ang72s|=12.1 degrees.

[0182] The maximum imaging height of the optical imaging system is ImgH. Within the effective optical area, the maximum refractive index among all transparent elements between the seventh lens E7 and the imaging surface IMG is NEmax. The distance from the image-side surface of the seventh lens E7 to the imaging surface IMG along the optical axis is BL, which satisfies the following condition: ImgH × NEmax / BL = 21.56. In this embodiment, only one transparent element is disposed between the seventh lens E7 and the imaging surface IMG, and this transparent element is the filter element E8. Therefore, NEmax is the refractive index of the filter element E8.

[0183] The maximum imaging height of the optical imaging system group is ImgH, and the distance from the image side surface of the seventh lens E7 to the imaging plane IMG on the optical axis is BL, which satisfies the following condition: ImgH / BL=11.45.

[0184] The maximum effective radius of the object-side surface of the first lens E1 is Y11, and the maximum effective radius of the image-side surface of the fourth lens E4 is Y42, which satisfies the following condition: Y11 / Y42=0.94.

[0185] The maximum effective radius of the object-side surface of the first lens E1 is Y11, and the maximum effective radius of the image-side surface of the seventh lens E7 is Y72, which satisfies the following condition: Y72 / Y11=2.72.

[0186] The perpendicular distance between the concave critical point of the object-side surface of the sixth lens E6 and the optical axis is Yc61, and the maximum effective radius of the object-side surface of the sixth lens E6 is Y61, which satisfies the following condition: Yc61 / Y61=0.36.

[0187] The perpendicular distance between the convex critical point of the image-side surface of the sixth lens E6 and the optical axis is Yc62, and the maximum effective radius of the image-side surface of the sixth lens E6 is Y62, which satisfies the following condition: Yc62 / Y62=0.33.

[0188] The perpendicular distance between the convex critical point of the object-side surface of the seventh lens E7 and the optical axis is Yc71, and the maximum effective radius of the object-side surface of the seventh lens E7 is Y71, which satisfies the following condition: Yc71 / Y71=0.89.

[0189] Please refer to Table 1 and Table 2 below.

[0190]

[0191]

[0192]

[0193]

[0194] Table 1 is... Figure 1 The first embodiment provides detailed structural data, where the units for radius of curvature, thickness, and focal length are millimeters (mm), and surfaces 0 to 20 sequentially represent surfaces from the object side to the image side. Table 2 shows the aspherical data in the first embodiment, where k is the cone coefficient in the aspherical curve equation, and A4 to A30 represent the 4th to 30th order aspherical coefficients of each surface. Furthermore, the tables for the following embodiments are corresponding schematic diagrams and aberration curves for each embodiment. The definitions of the data in the tables are the same as those in Tables 1 and 2 of the first embodiment, and will not be repeated here.

[0195] <Second Embodiment>

[0196] Please refer to Figures 3 to 4 ,in Figure 3 A schematic diagram of an image-capturing device according to a second embodiment of the present invention is shown. Figure 4 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the second embodiment. Figure 3 It is known that the image capturing device 2 includes an optical image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The optical image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a third lens E3, an aperture stop S2, a fourth lens E4, a fifth lens E5, an aperture stop S3, a sixth lens E6, a seventh lens E7, a filter element E8, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical image capturing system assembly includes seven lenses (E1, E2, E3, E4, E5, E6, and E7), and there are no other interposed lenses between the lenses.

[0197] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection off-axis, and its image-side surface also has a point of inflection off-axis.

[0198] The second lens E2 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical, and its object-side surface has an inflection point off-axis.

[0199] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both of its surfaces are aspherical.

[0200] The fourth lens E4 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical, and its image-side surface has an inflection point off-axis.

[0201] The fifth lens E5 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical, and its image-side surface has two inflection points off-axis.

[0202] The sixth lens E6 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has three inflection points off-axis. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0203] The seventh lens E7 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, its image-side surface has two inflection points off-axis, and its object-side surface has a convex critical point off-axis.

[0204] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG. It does not affect the focal length of the optical imaging system assembly. The filter element E8 serves as a light-transmitting element between the seventh lens E7 and the imaging surface IMG.

[0205] Please refer to Table 3 and Table 4 below.

[0206]

[0207]

[0208]

[0209]

[0210] In the second embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0211]

[0212]

[0213] <Third Embodiment>

[0214] Please refer to Figures 5 to 6 ,in Figure 5 A schematic diagram of an image-capturing device according to a third embodiment of the present invention is shown. Figure 6 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the third embodiment. Figure 5It is known that the image capturing device 3 includes an optical image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The optical image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a third lens E3, an aperture stop S2, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter element E8, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical image capturing system assembly includes seven lenses (E1, E2, E3, E4, E5, E6, and E7), and there are no other interposed lenses between the lenses.

[0215] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection off-axis, and its image-side surface also has a point of inflection off-axis.

[0216] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical, and its object-side surface has an inflection point off-axis.

[0217] The third lens E3 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection off-axis, and its image-side surface also has a point of inflection off-axis.

[0218] The fourth lens E4 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both of its surfaces are aspherical. Its object-side surface has three inflection points off-axis, and its image-side surface has one inflection point off-axis.

[0219] The fifth lens E5 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has three inflection points off-axis.

[0220] The sixth lens E6 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has four inflection points off-axis. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0221] The seventh lens E7 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, its image-side surface has two inflection points off-axis, and its object-side surface has a convex critical point off-axis.

[0222] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG. It does not affect the focal length of the optical imaging system assembly. The filter element E8 serves as a light-transmitting element between the seventh lens E7 and the imaging surface IMG.

[0223] Please refer to Table 5 and Table 6 below.

[0224]

[0225]

[0226]

[0227]

[0228] In the third embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0229]

[0230]

[0231] <Fourth Embodiment>

[0232] Please refer to Figures 7 to 8 ,in Figure 7 A schematic diagram of an image-capturing device according to a fourth embodiment of the present invention is shown. Figure 8 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fourth embodiment. Figure 7 It is known that the image capturing device 4 includes an optical image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The optical image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a third lens E3, an aperture stop S2, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter element E8, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical image capturing system assembly includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interposed lenses between the lenses.

[0233] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection off-axis, and its image-side surface also has a point of inflection off-axis.

[0234] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical.

[0235] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical, and its object-side surface has an inflection point off-axis.

[0236] The fourth lens E4 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has two inflection points off-axis.

[0237] The fifth lens E5 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has three inflection points off-axis.

[0238] The sixth lens E6 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has four inflection points off-axis. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0239] The seventh lens E7 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, its image-side surface has two inflection points off-axis, and its object-side surface has a convex critical point off-axis.

[0240] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG. It does not affect the focal length of the optical imaging system assembly. The filter element E8 serves as a light-transmitting element between the seventh lens E7 and the imaging surface IMG.

[0241] Please refer to Tables 7 and 8 below.

[0242]

[0243]

[0244]

[0245]

[0246] In the fourth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0247]

[0248] <Fifth Embodiment>

[0249] Please refer to Figures 9 to 10 ,in Figure 9 A schematic diagram of an image-capturing device according to a fifth embodiment of the present invention is shown. Figure 10 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fifth embodiment. Figure 9 It is known that the image capturing device 5 includes an optical image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The optical image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a third lens E3, a fourth lens E4, a fifth lens E5, an aperture stop S2, a sixth lens E6, a seventh lens E7, a filter element E8, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical image capturing system assembly includes seven lenses (E1, E2, E3, E4, E5, E6, and E7), and there are no other interposed lenses between the lenses.

[0250] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection off-axis, and its image-side surface also has a point of inflection off-axis.

[0251] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical, and its object-side surface has two inflection points off-axis.

[0252] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical, and its object-side surface has an inflection point off-axis.

[0253] The fourth lens E4 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has one inflection point off-axis, and its image-side surface has two inflection points off-axis.

[0254] The fifth lens E5 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has three inflection points off-axis.

[0255] The sixth lens E6 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has three inflection points off-axis. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0256] The seventh lens E7 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, its image-side surface has two inflection points off-axis, and its object-side surface has a convex critical point off-axis.

[0257] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG. It does not affect the focal length of the optical imaging system assembly. The filter element E8 serves as a light-transmitting element between the seventh lens E7 and the imaging surface IMG.

[0258] Please refer to Tables 9 and 10 below.

[0259]

[0260]

[0261]

[0262]

[0263] In the fifth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0264]

[0265] <Sixth Embodiment>

[0266] Please refer to Figures 11 to 12 ,in Figure 11 A schematic diagram of an image-capturing device according to a sixth embodiment of the present invention is shown. Figure 12 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the sixth embodiment. Figure 11 It is known that the image capturing device 6 includes an optical image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The optical image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a third lens E3, an aperture stop S2, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter element E8, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical image capturing system assembly includes seven lenses (E1, E2, E3, E4, E5, E6, and E7), and there are no other interposed lenses between the lenses.

[0267] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection off-axis, and its image-side surface also has a point of inflection off-axis.

[0268] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical, and its object-side surface has two inflection points off-axis.

[0269] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical, and its object-side surface has an inflection point off-axis.

[0270] The fourth lens E4 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has one inflection point off-axis.

[0271] The fifth lens E5 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has three inflection points off-axis.

[0272] The sixth lens E6 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has three inflection points off-axis. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0273] The seventh lens E7 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, its image-side surface has two inflection points off-axis, and its object-side surface has a convex critical point off-axis.

[0274] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG. It does not affect the focal length of the optical imaging system assembly. The filter element E8 serves as a light-transmitting element between the seventh lens E7 and the imaging surface IMG.

[0275] Please refer to Table 11 and Table 12 below.

[0276]

[0277]

[0278]

[0279]

[0280] In the sixth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0281]

[0282]

[0283] <Seventh Embodiment>

[0284] Please refer to Figures 13 to 14 ,in Figure 13 A schematic diagram of an image-capturing device according to a seventh embodiment of the present invention is shown. Figure 14 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the seventh embodiment. Figure 13 It is known that the image capturing device 7 includes an optical image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The optical image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a third lens E3, an aperture stop S2, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter element E8, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical image capturing system assembly includes seven lenses (E1, E2, E3, E4, E5, E6, and E7), and there are no other interposed lenses between the lenses.

[0285] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection off-axis, and its image-side surface also has a point of inflection off-axis.

[0286] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical, and its object-side surface has two inflection points off-axis.

[0287] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical, and its object-side surface has an inflection point off-axis.

[0288] The fourth lens E4 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has one inflection point off-axis, and its image-side surface has two inflection points off-axis.

[0289] The fifth lens E5 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has three inflection points off-axis.

[0290] The sixth lens E6 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has two inflection points off-axis. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0291] The seventh lens E7 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, its image-side surface has two inflection points off-axis, and its object-side surface has a convex critical point off-axis.

[0292] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG. It does not affect the focal length of the optical imaging system assembly. The filter element E8 serves as a light-transmitting element between the seventh lens E7 and the imaging surface IMG.

[0293] Please refer to Tables 13 and 14 below.

[0294]

[0295]

[0296]

[0297] In the seventh embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0298]

[0299] <Eighth Embodiment>

[0300] Please refer to Figures 15 to 16 ,in Figure 15 A schematic diagram of an image-capturing device according to an eighth embodiment of the present invention is shown. Figure 16 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the eighth embodiment. Figure 15 It is known that the image capturing device 8 includes an optical image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The optical image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a third lens E3, an aperture stop S2, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter element E8, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical image capturing system assembly includes seven lenses (E1, E2, E3, E4, E5, E6, and E7), and there are no other interposed lenses between the lenses.

[0301] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection off-axis, and its image-side surface also has a point of inflection off-axis.

[0302] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical, and its object-side surface has two inflection points off-axis.

[0303] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical, and its object-side surface has an inflection point off-axis.

[0304] The fourth lens E4 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has one inflection point off-axis.

[0305] The fifth lens E5 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has one inflection point off-axis, and its image-side surface has four inflection points off-axis.

[0306] The sixth lens E6 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has five inflection points off-axis. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0307] The seventh lens E7 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, its image-side surface has two inflection points off-axis, and its object-side surface has a convex critical point off-axis.

[0308] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG. It does not affect the focal length of the optical imaging system assembly. The filter element E8 serves as a light-transmitting element between the seventh lens E7 and the imaging surface IMG.

[0309] Please refer to Tables 15 and 16 below.

[0310]

[0311]

[0312]

[0313]

[0314] In the eighth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0315]

[0316] <Ninth Embodiment>

[0317] Please refer to Figures 17 to 18 ,in Figure 17 A schematic diagram of an image-capturing device according to a ninth embodiment of the present invention is shown. Figure 18 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the ninth embodiment. Figure 17 It is known that the image capturing device 9 includes an optical image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The optical image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a third lens E3, an aperture stop S2, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter element E8, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical image capturing system assembly includes seven lenses (E1, E2, E3, E4, E5, E6, and E7), and there are no other interposed lenses between the lenses.

[0318] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection off-axis, and its image-side surface also has a point of inflection off-axis.

[0319] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical.

[0320] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has one inflection point off-axis, and its image-side surface has two inflection points off-axis.

[0321] The fourth lens E4 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has two inflection points off-axis.

[0322] The fifth lens E5 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has four inflection points off-axis.

[0323] The sixth lens E6 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points off-axis, and its image-side surface has five inflection points off-axis. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0324] The seventh lens E7 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection off-axis, its image-side surface has a point of inflection off-axis, and its object-side surface has a convex critical point off-axis.

[0325] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG. It does not affect the focal length of the optical imaging system assembly. The filter element E8 serves as a light-transmitting element between the seventh lens E7 and the imaging surface IMG.

[0326] Please refer to Tables 17 and 18 below.

[0327]

[0328]

[0329]

[0330]

[0331] In the ninth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0332]

[0333]

[0334] <Tenth Embodiment>

[0335] Please refer to Figures 19 to 20 ,in Figure 19 A schematic diagram of an image-capturing device according to a tenth embodiment of the present invention is shown. Figure 20 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the tenth embodiment. Figure 19 It is known that the image capturing device 10 includes an optical image capturing system assembly (unlabeled) and an electronic photosensitive element IS. The optical image capturing system assembly, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a third lens E3, an aperture stop S2, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter element E8, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG. The optical image capturing system assembly includes seven lenses (E1, E2, E3, E4, E5, E6, and E7), and there are no other interposed lenses between the lenses.

[0336] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has a point of inflection, and its image-side surface also has a point of inflection.

[0337] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical.

[0338] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical, and its object-side surface has a point of inflection.

[0339] The fourth lens E4 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface has one inflection point.

[0340] The fifth lens E5 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface has three inflection points.

[0341] The sixth lens E6 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface has three inflection points. Its object-side surface has a concave critical point off-axis, and its image-side surface has a convex critical point off-axis.

[0342] The seventh lens E7 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points, its image-side surface has one inflection point, and its object-side surface has a convex critical point off-axis.

[0343] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG. It does not affect the focal length of the optical imaging system assembly. The filter element E8 serves as a light-transmitting element between the seventh lens E7 and the imaging surface IMG.

[0344] Please refer to Tables 19 and 20 below.

[0345]

[0346]

[0347]

[0348]

[0349] In the tenth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0350]

[0351]

[0352] <Eleventh Embodiment>

[0353] Please refer to Figure 21 This diagram illustrates a perspective view of an image-capturing device according to an eleventh embodiment of the present invention. In this embodiment, the image-capturing device 100 is a camera module. The image-capturing device 100 includes an imaging lens 101, a driving device 102, an electronic photosensitive element 103, and an image stabilization module 104. The imaging lens 101 includes the optical image-capturing system assembly described in the first embodiment, a lens barrel (not otherwise labeled) for supporting the optical image-capturing system assembly, and a support device (Holder Member, not otherwise labeled). The imaging lens 101 can also be configured with the optical image-capturing system assembly described in other embodiments, and the present invention is not limited thereto. The image-capturing device 100 uses the imaging lens 101 to focus light to generate an image, and cooperates with the driving device 102 to focus the image, finally imaging it onto the electronic photosensitive element 103 and outputting it as image data.

[0354] The driving device 102 may have an auto-focus function, and its driving method can use a driving system such as a voice coil motor (VCM), microelectromechanical systems (MEMS), piezoelectric systems, and shape memory alloys. The driving device 102 enables the imaging lens 101 to achieve a better imaging position, allowing clear images to be captured of the subject at different object distances. In addition, the imaging device 100 is equipped with a high-sensitivity and low-noise electronic image sensor 103 (such as CMOS or CCD) located on the imaging surface of the optical imaging system assembly, which can truly present the good imaging quality of the optical imaging system assembly.

[0355] The image stabilization module 104 may be, for example, an accelerometer, a gyroscope, or a Hall effect sensor. The drive unit 102 may work in conjunction with the image stabilization module 104 to form an optical image stabilization (OIS) device. By adjusting the changes in different axes of the imaging lens 101, it can compensate for the blurry image caused by shaking during shooting, or use image compensation technology in the image software to provide electronic image stabilization (EIS) function, further improving the image quality of shooting in dynamic and low-light scenes.

[0356] <Twelfth Embodiment>

[0357] Please refer to Figures 22 to 24 ,in Figure 22 A perspective view of one side of an electronic device according to the twelfth embodiment of the present invention is shown. Figure 23 Draw Figure 22 A three-dimensional diagram of the other side of the electronic device, and Figure 24 Draw Figure 22 System block diagram of an electronic device.

[0358] In this embodiment, the electronic device 200 is a smartphone. The electronic device 200 includes, according to the eleventh embodiment, image capturing devices 100, 100a, 100b, 100c, and 100d, a flash module 201, a focus assist module 202, an image signal processor 203, a display module 204, and an image software processor 205. Image capturing devices 100 and 100a are both located on the same side of the electronic device 200 and are both single-focus. The focus assist module 202 may employ a laser ranging or Time-of-Flight (ToF) module, but the present invention is not limited thereto. Image capturing devices 100b, 100c, and 100d, along with display module 204, are all located on the other side of electronic device 200. Display module 204 can serve as a user interface, allowing image capturing devices 100b, 100c, and 100d to function as front-facing lenses for selfies; however, this invention is not limited to this. Furthermore, image capturing devices 100a, 100b, 100c, and 100d can all include the optical imaging system assembly of this invention and can all have a structural configuration similar to that of image capturing device 100. Specifically, each of image capturing devices 100a, 100b, 100c, and 100d can include an imaging lens, a driving device, an electronic photosensitive element, and an image stabilization module. The imaging lenses of imaging devices 100a, 100b, 100c and 100d may each include, for example, an optical lens group of the optical imaging system group of the present invention, a lens barrel for carrying the optical lens group and a support device.

[0359] Image capturing device 100 is a wide-angle image capturing device, image capturing device 100a is an ultra-wide-angle image capturing device, image capturing device 100b is a wide-angle image capturing device, image capturing device 100c is an ultra-wide-angle image capturing device, and image capturing device 100d is a time-of-flight ranging image capturing device. In this embodiment, image capturing devices 100 and 100a have different viewing angles, allowing the electronic device 200 to provide different magnifications to achieve optical zoom shooting effects. Additionally, image capturing device 100d can acquire depth information of the image. The above-described electronic device 200 is exemplified by including multiple image capturing devices 100, 100a, 100b, 100c, and 100d, but the number and configuration of the image capturing devices are not intended to limit the invention.

[0360] When the user photographs the subject 206, the electronic device 200 uses the image capturing device 100 or image capturing device 100a to focus the light, activates the flash module 201 for supplemental lighting, and uses the subject distance information of the subject 206 provided by the focus assist module 202 for fast focusing. Furthermore, the image signal processor 203 performs image optimization processing to further improve the image quality produced by the optical imaging system. The focus assist module 202 can use an infrared or laser focus assist system to achieve fast focusing. In addition, the electronic device 200 can also use the image capturing devices 100b, 100c, or 100d for shooting. The display module 204 can use a touch screen, combined with the diverse functions of the image software processor 205 for image capturing and image processing (or can use a physical shooting button). The image processed by the image software processor 205 can be displayed on the display module 204.

[0361] <Thirteenth Embodiment>

[0362] Please refer to Figure 25 A perspective view of one side of an electronic device according to the thirteenth embodiment of the present invention is shown.

[0363] In this embodiment, the electronic device 300 is a smartphone. The electronic device 300 includes, according to the eleventh embodiment, an image capturing device 100, an image capturing device 100e, an image capturing device 100f, a flash module 301, a focus assist module, an image signal processor, a display module, and an image software processor (not shown). Image capturing devices 100, 100e, and 100f are all disposed on the same side of the electronic device 300, while the display module is disposed on the other side. Furthermore, image capturing devices 100e and 100f may each include the optical image capturing system assembly of the present invention and may each have a structural configuration similar to that of image capturing device 100, which will not be described in detail here.

[0364] Image capturing device 100 is a wide-angle image capturing device, image capturing device 100e is a telephoto image capturing device, and image capturing device 100f is an ultra-wide-angle image capturing device. In this embodiment, image capturing devices 100, 100e, and 100f have different viewing angles, allowing the electronic device 300 to provide different magnifications to achieve optical zoom shooting effects. Furthermore, image capturing device 100e is a telephoto image capturing device with an optical path deflection element configuration, so that the total length of image capturing device 100e is not limited by the thickness of the electronic device 300. The optical path deflection element configuration of image capturing device 100e can, for example, have a similar... Figures 28 to 30 The structure can be referred to the aforementioned corresponding structure. Figures 28 to 30The description of the above-described electronic device 300 is given as an example, which includes multiple image capturing devices 100, 100e, and 100f, but the number and configuration of the image capturing devices are not intended to limit the present invention. When a user photographs a subject, the electronic device 300 uses image capturing device 100, image capturing device 100e, or image capturing device 100f to focus the light and capture the image, activates the flash module 301 to provide supplementary lighting, and performs subsequent processing in a manner similar to the aforementioned embodiments, which will not be described in detail here.

[0365] <Fourteenth Embodiment>

[0366] Please refer to Figure 26 A perspective view of one side of an electronic device according to the fourteenth embodiment of the present invention is shown.

[0367] In this embodiment, the electronic device 400 is a smartphone. The electronic device 400 includes, according to the eleventh embodiment, image capturing devices 100g, 100h, 100i, 100j, 100k, 100m, 100n, and 100p, a flash module 401, a focus assist module, an image signal processor, a display module, and an image software processor (not shown). Image capturing devices 100g, 100h, 100i, 100j, 100k, 100m, 100n, and 100p are all disposed on the same side of the electronic device 400, while the display module is disposed on the other side of the electronic device 400. Furthermore, the imaging devices 100g, 100h, 100i, 100j, 100k, 100m, 100n, and 100p can all include the optical imaging system group of the present invention and can all have a structural configuration similar to that of the imaging device 100, which will not be described in detail here.

[0368] Image capturing device 100 is a wide-angle image capturing device, image capturing device 100g is a telephoto image capturing device, image capturing device 100h is a telephoto image capturing device, image capturing device 100i is a wide-angle image capturing device, image capturing device 100j is an ultra-wide-angle image capturing device, image capturing device 100k is an ultra-wide-angle image capturing device, image capturing device 100m is a telephoto image capturing device, image capturing device 100n is a telephoto image capturing device, and image capturing device 100p is a time-of-flight ranging image capturing device. In this embodiment, image capturing devices 100, 100g, 100h, 100i, 100j, 100k, 100m, and 100n have different viewing angles, allowing the electronic device 400 to provide different magnifications to achieve an optical zoom shooting effect. Furthermore, the image capturing device 100g and the image capturing device 100h can be telescopic image capturing devices configured with optical path deflection elements. The optical path deflection element configuration of the image capturing device 100g and the image capturing device 100h can, for example, have a similar... Figures 28 to 30 The structure can be referred to the aforementioned corresponding structure. Figures 28 to 30 The description of the image acquisition device 100p will not be repeated here. Additionally, the image acquisition device 100p can acquire depth information of the image. The electronic device 400 described above is exemplified by including multiple image acquisition devices 100, 100g, 100h, 100i, 100j, 100k, 100m, 100n, and 100p, but the number and configuration of the image acquisition devices are not intended to limit the invention. When a user photographs a subject, the electronic device 400 uses image acquisition devices 100, 100g, 100h, 100i, 100j, 100k, 100m, 100n, or 100p to focus light and capture an image, activates the flash module 401 for supplemental lighting, and performs subsequent processing in a manner similar to the aforementioned embodiments, which will not be repeated here.

[0369] The image capturing device of the present invention is not limited to application in smartphones. It can also be applied to mobile focusing systems as needed, and features excellent aberration correction and good image quality. For example, the image capturing device can be widely used in electronic devices such as 3D image acquisition, digital cameras, mobile devices, tablet computers, smart TVs, network monitoring equipment, dashcams, reversing cameras, multi-lens devices, recognition systems, motion-sensing game consoles, and wearable devices. The aforementioned electronic devices are merely illustrative examples of practical applications of the present invention and are not intended to limit the scope of application of the image capturing device of the present invention.

[0370] Although the present invention has been disclosed above with reference to the preferred embodiments described above, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be determined by the scope defined in the claims of the present invention.

Claims

1. An optical image pickup system set, characterized by comprising: The seven lenses sequentially include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens along an optical path from an object side to an image side, and each of the seven lenses has an object side surface facing the object side and an image side surface facing the image side. The total number of lenses in the optical image capturing system group is seven, the first lens has positive refractive power, the sixth lens has positive refractive power, the sixth lens image side surface is concave at the vicinity of the optical axis, the seventh lens has negative refractive power, the seventh lens object side surface is concave at the vicinity of the optical axis, and at least one surface of the object side surface and the image side surface of at least one lens in the optical image capturing system group has at least one inflection point at the off-axis position. The maximum image height of the optical image capturing system group is ImgH, the distance from the seventh lens image side surface to an image plane on the optical axis is BL, the focal length of the optical image capturing system group is f, the radius of curvature of the seventh lens object side surface is R13, and the radius of curvature of the seventh lens image side surface is R14, which satisfy the following conditions: 7.50 < ImgH / BL; and -4.5 < f / R13 + f / R14 < -3.

0.

2. The optical image retrieval system group according to claim 1, wherein The maximum image height of the optical image capturing system group is ImgH, the distance from the seventh lens image side surface to the image plane on the optical axis is BL, which satisfy the following conditions: 8.50 < ImgH / BL.

3. The optical image retrieval system group according to claim 1, wherein The Abbe number of the first lens is V1, the Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, and the Abbe number of the fifth lens is V5, which satisfy the following conditions: 1.4 < (V1+V3) / (V2+V4+V5) < 4.

0.

4. The optical image retrieval system group according to claim 1, wherein The interval distance between the sixth lens and the seventh lens on the optical axis is T67, and the distance from the seventh lens image side surface to the image plane on the optical axis is BL, which satisfy the following conditions: 1.9 < T67 / BL.

5. The optical image retrieval system group of claim 1, wherein The radius of curvature of the sixth lens image side surface is R12, and the radius of curvature of the seventh lens object side surface is R13, which satisfy the following conditions: 1.5 < (R12-R13) / (R12+R13) < 3.

0.

6. The optical image retrieval system group of claim 1, wherein The angle between the exit light ray of the chief ray of the maximum field of view and the optical axis on the seventh lens image side surface is Ang72c, which satisfy the following conditions: 40.0 degrees < |Ang72c| < 55.0 degrees.

7. The optical image capturing system group of claim 1, wherein The maximum effective radius of the first lens object side surface is Y11, the maximum effective radius of the fourth lens image side surface is Y42, and the maximum effective radius of the seventh lens image side surface is Y72, which satisfy the following conditions: 0.65 < Y11 / Y42 < 1.5; and 2.0 < Y72 / Y11 < 5.

0.

8. The optical image retrieval system group of claim 1, wherein, The focal length of the sixth lens is f6, the radius of curvature of the sixth lens object side surface is R11, and the radius of curvature of the sixth lens image side surface is R12, which satisfy the following conditions: 3.0 < |f6| / R11 + |f6| / R12. wherein a perpendicular distance between a convex critical point of the sixth lens image side surface and the optical axis is Yc62, a maximum effective radius of the sixth lens image side surface is Y62, and at least one convex critical point of the sixth lens image side surface at an off-axis position satisfies the following condition: 0.20 < Yc62 / Y62 < 0.

50.

9. The optical image retrieval system group of claim 1, wherein, At least one surface of the object side surface and the image side surface of each lens in the optical image capturing lens set has at least one inflection point at an off-axis position; wherein a focal length of the optical image capturing lens set is f, a focal length of the second lens is f2, a focal length of the third lens is f3, a focal length of the fourth lens is f4, and a focal length of the fifth lens is f5, which satisfy the following condition: |f / f2| + |f / f3| + |f / f4| + |f / f5| < 1.

8.

10. An image capturing device, comprising: comprising: the optical image capturing lens set of claim 1; and an electronic photosensitive element disposed on the image plane of the optical image capturing lens set.

11. An electronic device, comprising: comprising: the image capturing device of claim 10.

12. An optical image pickup system set, characterized by comprising: comprising seven lenses, which are sequentially arranged along an optical path from an object side to an image side as a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, and each of the seven lenses has an object side surface facing toward the object side direction and an image side surface facing toward the image side direction; wherein a total number of lenses in the optical image capturing lens set is seven, the first lens has positive refractive power, the first lens object side surface is convex near an optical axis, the first lens image side surface is concave near the optical axis, the sixth lens has positive refractive power, the sixth lens image side surface is concave near the optical axis, the seventh lens has negative refractive power, the seventh lens object side surface is concave near the optical axis, the seventh lens image side surface is convex near the optical axis, and at least one surface of the object side surface and the image side surface of at least one lens in the optical image capturing lens set has at least one inflection point at an off-axis position; wherein a maximum image height of the optical image capturing lens set is ImgH, a distance from the seventh lens image side surface to an image plane on the optical axis is BL, a radius of curvature of the seventh lens image side surface is R14, and a focal length of the optical image capturing lens set is f, which satisfy the following conditions: 7.50 < ImgH / BL; and -10 < R14 / f < -0.

70.

13. The optical image retrieval system group of claim 12, wherein, a maximum image height of the optical image capturing lens set is ImgH, a distance from the seventh lens image side surface to the image plane on the optical axis is BL, which satisfy the following condition: 8.50 < ImgH / BL.

14. The optical image retrieval system group of claim 12, wherein, a radius of curvature of the seventh lens image side surface is R14, and a focal length of the optical image capturing lens set is f, which satisfy the following condition: -7.5 < R14 / f < -0.

90.

15. The optical image retrieval system group of claim 12, wherein, an Abbe number of the first lens is V1, an Abbe number of the second lens is V2, and an Abbe number of the third lens is V3, which satisfy the following condition: 5.0 < (V1+V3) / V2 < 12.

16. The optical image retrieval system group of claim 12, wherein, a thickness of the third lens on the optical axis is CT3, and a separation distance between the second lens and the third lens on the optical axis is T23, which satisfy the following condition: 1.0 < CT3 / T23 < 2.

7.

17. The optical image retrieval system group of claim 12, wherein, Further comprising at least one light-transmitting element disposed between the seventh lens and the imaging surface, wherein the optical image-taking system group has a maximum imaging height ImgH, the at least one light-transmitting element has a maximum refractive index NEmax in an optical effective region, and a distance between the seventh lens image-side surface and the imaging surface on the optical axis is BL, and the following condition is satisfied: 14.0 < ImgH x NEmax / BL.

18. The optical image retrieval system group of claim 12, wherein, The second lens image-side surface is concave near the optical axis; Wherein the optical image-taking system group has a focal length f, the first lens has a focal length f1, the second lens image-side surface has a radius of curvature R4, and the first lens has a thickness CT1 on the optical axis, and the following conditions are satisfied: 0.20 < f / R4 < 1.4; and 6.5 < f1 / CT1 < 15.

19. The optical image retrieval system group of claim 12, wherein, The optical image-taking system group has an aperture value Fno, and half of the maximum viewing angle in the optical image-taking system group is HFOV, and the following conditions are satisfied: 1.2 < Fno < 2.0; and 35.0 degrees < HFOV < 65.0 degrees; Wherein the vertical distance between the convex critical point of the seventh lens object-side surface and the optical axis is Yc71, the maximum effective radius of the seventh lens object-side surface is Y71, and the seventh lens object-side surface has at least one convex critical point off-axis, and the following conditions are satisfied: 0.80 < Yc71 / Y71 < 0.

97.

20. An optical image pickup system set, comprising: Comprising seven lenses, which are sequentially arranged along an optical path from an object side to an image side as a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, and each of the seven lenses has an object-side surface facing the object side and an image-side surface facing the image side; Wherein the total number of lenses in the optical image-taking system group is seven, the first lens has positive refractive power, the first lens object-side surface is convex near the optical axis, the first lens image-side surface is concave near the optical axis, the sixth lens has positive refractive power, the sixth lens object-side surface is convex near the optical axis, the seventh lens has negative refractive power, the seventh lens object-side surface is concave near the optical axis, the seventh lens image-side surface is convex near the optical axis, and at least one surface of the object-side surface and the image-side surface of at least one lens in the optical image-taking system group has at least one inflection point off-axis; Wherein the optical image-taking system group has a maximum imaging height ImgH, a distance between the seventh lens image-side surface and an imaging surface on the optical axis is BL, a radius of curvature of the seventh lens image-side surface is R14, and a focal length of the seventh lens is f7, and the following conditions are satisfied: 7.50 < ImgH / BL; and 0.75 < R14 / f7 < 9.

5.

21. The optical image retrieval system group of claim 20, wherein, The optical image-taking system group has a maximum imaging height ImgH, and a distance between the seventh lens image-side surface and the imaging surface on the optical axis is BL, and the following condition is satisfied: 8.50 < ImgH / BL.

22. The optical image retrieval system group of claim 20, wherein, A radius of curvature of the seventh lens image-side surface is R14, a focal length of the seventh lens is f7, an angle between a tangent of an optical effective region boundary of the seventh lens image-side surface and a plane perpendicular to the optical axis is Ang72s, and the following conditions are satisfied: 1.0 < R14 / f7 < 8.5; and | Ang72s | < 20.0 degrees.

23. The optical image retrieval system group of claim 20, wherein, A thickness of the fifth lens on the optical axis is CT5, a thickness of the sixth lens on the optical axis is CT6, and a separation distance of the fifth lens and the sixth lens on the optical axis is T56, which satisfy the following conditions: 0.75 < (CT5 + CT6) / T56 < 2.

4.

24. The optical image retrieval system group of claim 20, wherein, A distance of the first lens object side surface to the seventh lens image side surface on the optical axis is TD, a distance of the seventh lens image side surface to the imaging surface on the optical axis is BL, a distance of the first lens object side surface to the imaging surface on the optical axis is TL, and a maximum imaging height of the optical imaging system group is ImgH, which satisfy the following conditions: 9.5 < TD / BL; and 0.40 < TL / ImgH < 1.

6.

25. The optical image retrieval system group of claim 20, wherein, A focal length of the optical imaging system group is f, and a combined focal length of the second lens, the third lens, and the fourth lens is f234, which satisfy the following condition: 4.5 < |f234 / f|.

26. The optical imaging system group of claim 20, wherein A radius of curvature of the first lens object side surface is R1, and a radius of curvature of the first lens image side surface is R2, which satisfy the following condition: -4.0 < (R1 + R2) / (R1 - R2) < -1.

0.

27. The optical imaging system group of claim 20, wherein A perpendicular distance between a concave critical point of the sixth lens object side surface and the optical axis is Yc61, a maximum effective radius of the sixth lens object side surface is Y61, and the sixth lens object side surface has at least one concave critical point at an off-axis position, which satisfy the following condition: 0.20 < Yc61 / Y61 < 0.55.

Images