Optical imaging system group, image capturing device and electronic device

Abstract

An optical imaging system, an image capturing device and an electronic device are disclosed. The optical imaging system includes seven lenses. The seven lenses are arranged in order from an object side to an image side of an 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 lens has an object side surface facing the object side and an image side surface facing the image side. The second lens has a negative refractive power. The third lens has a convex object side surface near an optical axis. The fifth lens has a convex image side surface near the optical axis. The sixth lens has a negative refractive power, a convex object side surface near the optical axis and a concave image side surface near the optical axis. The seventh lens has a negative refractive power. When certain conditions are met, aberrations can be corrected to improve image quality.

Description

Technical Field

[0001] This disclosure relates to an optical imaging system assembly and an image-capturing device, and more particularly to a miniaturized optical imaging system assembly and an image-capturing device for use in electronic devices. Background Technology

[0002] With advancements in semiconductor manufacturing technology, the performance of electronic image sensors has improved, allowing pixels to reach smaller sizes. Therefore, optical lenses with high image quality have become indispensable. As technology advances rapidly, the applications of electronic devices equipped with optical lenses are becoming more widespread, leading to more diverse requirements for these lenses. Because traditional optical lenses often struggled to achieve a balance between image quality, sensitivity, aperture size, size, and viewing angle, this invention provides an optical lens that meets these needs. Summary of the Invention

[0003] The optical imaging system assembly, image acquisition device, and electronic device disclosed herein improve image quality by correcting aberrations through the configuration of the object-side surface shape of the third lens and the mutual cooperation of the lens materials.

[0004] This disclosure provides an optical imaging system assembly comprising seven lenses, which are sequentially arranged from the object side to the 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. Each lens has an object-side surface facing the object side and an image-side surface facing the image side. The first lens has positive refractive power. The second lens has negative refractive power. The object-side surface of the third lens is convex near the optical axis. The fifth lens has positive refractive power, and its image-side surface is convex near the optical axis. The sixth lens has negative refractive power, and its object-side surface is convex near the optical axis, while its image-side surface is concave near the optical axis. The seventh lens has negative refractive power. At least one surface of at least one of the first to seventh lenses includes at least one inflection point. The Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, and the Abbe number of the sixth lens is V6. The optical axis spacing between the first and second lenses is T12, and the optical axis spacing between the second and third lenses is T23. These conditions satisfy: 4.4 < (V5 + V6) / V4 < 12; and 0.70. <T23 / T12<3.6。

[0005] This disclosure provides an optical imaging system assembly comprising seven lenses, which are sequentially arranged from the object side to the image side of 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 lens has an object-side surface facing the object side and an image-side surface facing the image side. The first lens has positive refractive power. The second lens has negative refractive power. The object-side surface of the third lens is convex near the optical axis. The fifth lens has positive refractive power, with its object-side surface concave near the optical axis and its image-side surface convex near the optical axis. The sixth lens has negative refractive power, with its image-side surface concave near the optical axis. The seventh lens has negative refractive power, with its object-side surface concave near the optical axis and its image-side surface concave near the optical axis. At least one surface of at least one of the first to seventh lenses includes at least one inflection point. The Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, and the Abbe number of the sixth lens is V6. The distance between the second and third lenses on the optical axis is T23, and the distance between the sixth and seventh lenses on the optical axis is T67. These conditions satisfy the following: 5.3 < (V5 + V6) / V4 < 10; and 2.1 <T67 / T23<5.4。

[0006] This disclosure provides an optical imaging system assembly comprising seven lenses, which are sequentially arranged from the object side to the 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. Each lens has an object-side surface facing the object side and an image-side surface facing the image side. The first lens has positive refractive power, its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. The second lens has negative refractive power. The third lens has a convex object-side surface near the optical axis. The fifth lens has positive refractive power. The sixth lens has negative refractive power. The seventh lens has negative refractive power. At least two of the first to seventh lenses have at least one surface containing at least one inflection point. The Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, and the Abbe number of the sixth lens is V6. The thickness of the first lens along the optical axis is CT1, the thickness of the second lens along the optical axis is CT2, the thickness of the third lens along the optical axis is CT3, the thickness of the fourth lens along the optical axis is CT4, the thickness of the fifth lens along the optical axis is CT5, and the thickness of the sixth lens along the optical axis is CT6. The distance between the sixth and seventh lenses along the optical axis is T67. The maximum distance between the optically effective area of ​​the object-side surface of the first lens and the optical axis is Y11, and the maximum distance between the optically effective area of ​​the image-side surface of the seventh lens and the optical axis is Y72. These conditions satisfy the following: 4.4 < (V5 + V6) / V4 < 12; 1.0 < (CT1 + CT2 + CT3 + CT4 + CT5 + CT6) / T67 < 3.5; and 2.0 <Y72 / Y11<4.0。

[0007] According to the present disclosure, an imaging device is provided, comprising an optical imaging system assembly as described above and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the optical imaging system assembly.

[0008] According to this disclosure, an electronic device is also provided, comprising the image capturing device as described above.

[0009] When (V5+V6) / V4 meets the above conditions, the lens materials can be matched to correct aberrations such as chromatic aberration.

[0010] When T23 / T12 meets the above conditions, the distribution of the object-side lenses in the optical imaging system can be adjusted to compress the object-side volume.

[0011] When T67 / T23 meets the above conditions, the lens distribution of the optical imaging system group can be adjusted to reduce the volume.

[0012] When (CT1+CT2+CT3+CT4+CT5+CT6) / T67 meets the above conditions, the lens distribution of the optical imaging system can be adjusted to compress the volume.

[0013] When Y72 / Y11 meets the above conditions, the direction of light travel can be adjusted, which helps to achieve a balance between viewing angle, image size and volume distribution. Attached Figure Description

[0014] Figure 1 A schematic diagram illustrating an image-capturing device according to a first embodiment of the present disclosure is shown.

[0015] Figure 2 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the first embodiment.

[0016] Figure 3 A schematic diagram illustrating an image-capturing device according to a second embodiment of the present disclosure is shown.

[0017] Figure 4 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the second embodiment.

[0018] Figure 5 A schematic diagram illustrating an image-capturing device according to a third embodiment of the present disclosure is shown.

[0019] Figure 6 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the third embodiment.

[0020] Figure 7 A schematic diagram illustrating an image-capturing device according to the fourth embodiment of this disclosure is shown;

[0021] Figure 8From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fourth embodiment.

[0022] Figure 9 A schematic diagram illustrating an image-capturing device according to the fifth embodiment of this disclosure;

[0023] Figure 10 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fifth embodiment.

[0024] Figure 11 A schematic diagram illustrating an image-capturing device according to the sixth embodiment of this disclosure is shown;

[0025] Figure 12 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the sixth embodiment.

[0026] Figure 13 A schematic diagram illustrating an image-capturing device according to the seventh embodiment of this disclosure;

[0027] Figure 14 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the seventh embodiment.

[0028] Figure 15 A schematic diagram illustrating an imaging device according to the eighth embodiment of this disclosure;

[0029] Figure 16 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the eighth embodiment.

[0030] Figure 17 A schematic diagram illustrating some parameters, the inflection points of each lens, and the critical points of the image-side surfaces of the sixth and seventh lenses according to the first embodiment;

[0031] Figure 18 A perspective view of an imaging device according to the ninth embodiment of this disclosure is shown;

[0032] Figure 19A A schematic diagram showing one side of an electronic device according to the tenth embodiment of this disclosure;

[0033] Figure 19B Drawing according to Figure 19A A schematic diagram of the other side of the electronic device;

[0034] Figure 19C Drawing according to Figure 19A A schematic diagram of the electronic device in the middle;

[0035] Figure 20 A schematic diagram showing one side of an electronic device according to the eleventh embodiment of this disclosure;

[0036] Figure 21 A schematic diagram showing one side of an electronic device according to the twelfth embodiment of this disclosure;

[0037] Figure 22A A schematic diagram illustrating one configuration of the optical path-changing element in an optical imaging system according to this disclosure;

[0038] Figure 22B A schematic diagram illustrating another configuration of the optical path-modulating element in an optical imaging system according to this disclosure; and

[0039] Figure 22C A schematic diagram illustrating one configuration of two optical path reversing elements in an optical imaging system according to this disclosure is shown.

[0040] [Symbol Explanation]

[0041] 200, 300, 400: Electronic devices

[0042] 1,2,3,4,5,6,7,8,100,110,120,130,140,310,320,330,410,420,430,440,450,460,470,480,490: Image capturing device

[0043] 101: Imaging Lens

[0044] 102: Drive unit assembly

[0045] 103: Electronic photosensitive element

[0046] 104: Image Stabilization Module

[0047] 201, 301, 401: Flash module

[0048] 202: Focusing Assist Module

[0049] 203: Image Signal Processor

[0050] 204: User Interface

[0051] 205: Image Software Processor

[0052] 206: Subject

[0053] ST: Aperture

[0054] S1, S2: Aperture

[0055] E1: First lens

[0056] E2: Second lens

[0057] E3: Third Lens

[0058] E4: Fourth Lens

[0059] E5: Fifth Lens

[0060] E6: Sixth Lens

[0061] E7: Seventh Lens

[0062] E8: Filter element

[0063] IMG: Imaging Surface

[0064] IS: Electronic photosensitive element

[0065] IP: Recurve Point

[0066] CP: Critical Point

[0067] OA1: First optical axis

[0068] OA2: Second optical axis

[0069] OA3: Third optical axis

[0070] LF, LF1, LF2: Optical path switching elements

[0071] LG: Lens Group

[0072] f: Focal length of the optical imaging system group

[0073] Fno: Aperture value of the optical imaging system group

[0074] HFOV: Half of the maximum field of view in an optical imaging system group.

[0075] V4: Abbe number of the fourth lens

[0076] V5: Abbe number of the fifth lens

[0077] V6: Abbe number of the sixth lens

[0078] CT1: Thickness of the first lens on the optical axis

[0079] CT2: Thickness of the second lens on the optical axis

[0080] CT3: Thickness of the third lens on the optical axis

[0081] CT4: Thickness of the fourth lens on the optical axis

[0082] CT5: Thickness of the fifth lens on the optical axis

[0083] CT6: Thickness of the sixth lens on the optical axis

[0084] CT7: Thickness of the seventh lens on the optical axis

[0085] ΣCT: The sum of the thicknesses of all lenses in the optical imaging system assembly along the optical axis.

[0086] T12: The distance between the first lens and the second lens on the optical axis

[0087] T23: The distance between the second and third lenses on the optical axis

[0088] T34: The distance between the third and fourth lenses on the optical axis

[0089] T45: The distance between the fourth and fifth lenses on the optical axis

[0090] T56: The distance between the fifth and sixth lenses on the optical axis

[0091] T67: The distance between the sixth and seventh lenses on the optical axis

[0092] ΣAT: The sum of the distances between two adjacent lenses on the optical axis in an optical imaging system group.

[0093] TL: Distance along the optical axis from the object-side surface of the first lens to the imaging plane.

[0094] EPD: Entrance pupil diameter of the optical imaging system group

[0095] ImgH: Maximum image height of the optical imaging system group

[0096] f1: Focal length of the first lens

[0097] f2: Focal length of the second lens

[0098] f3: Focal length of the third lens

[0099] f4: Focal length of the fourth lens

[0100] f5: Focal length of the fifth lens

[0101] f6: Focal length of the sixth lens

[0102] f7: Focal length of the seventh lens

[0103] R1: Radius of curvature of the object-side surface of the first lens

[0104] R2: Radius of curvature of the image-side surface of the first lens

[0105] R11: Radius of curvature of the object-side surface of the sixth lens

[0106] R12: Radius of curvature of the image-side surface of the sixth lens

[0107] R13: Radius of curvature of the object-side surface of the seventh lens

[0108] R14: Radius of curvature of the image-side surface of the seventh lens

[0109] Y11: The maximum distance between the optically effective area of ​​the object-side surface of the first lens and the optical axis.

[0110] Y61: The maximum distance between the optically effective area and the optical axis of the object-side surface of the sixth lens.

[0111] Y62: The maximum distance between the optically effective area of ​​the image-side surface of the sixth lens and the optical axis.

[0112] Y72: The maximum distance between the optically effective area of ​​the image-side surface of the seventh lens and the optical axis.

[0113] Yc61: Distance between the critical point on the object-side surface of the sixth lens and the optical axis.

[0114] Yc62: Distance between the critical point of the image-side surface of the sixth lens and the optical axis.

[0115] Yc72: Distance between the critical point of the image-side surface of the seventh lens and the optical axis. Detailed Implementation

[0116] This disclosure provides an optical imaging system assembly comprising seven lenses, which are sequentially arranged from the object side to the 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. Each lens has an object-side surface facing the object side and an image-side surface facing the image side.

[0117] The first lens may have positive refractive power, which helps to reduce the volume of the object-side end of the optical imaging system assembly. The object-side surface of the first lens near the optical axis may be convex, which can adjust the direction of light entering the optical imaging system assembly and help to increase the viewing angle. The image-side surface of the first lens near the optical axis may be concave, which can adjust the surface shape of the first lens and help to correct aberrations such as astigmatism.

[0118] The second lens may have negative refractive power, and it can work in conjunction with the first lens to correct aberrations such as spherical aberration. The image-side surface of the second lens near the optical axis may be concave, which allows adjustment of the surface shape and refractive power of the second lens to correct aberrations.

[0119] The object-side surface of the third lens is convex near the optical axis, which allows for adjustment of the lens's shape and helps correct aberrations such as spherical aberration.

[0120] The fifth lens can have positive refractive power, which helps to compress the volume of the image-side end of the optical imaging system assembly. The object-side surface of the fifth lens near the optical axis can be concave, which can adjust the direction of light travel and help balance the volume distribution of the optical imaging system assembly. The image-side surface of the fifth lens near the optical axis can be convex, which can adjust the direction of light travel and help increase the image area.

[0121] The sixth lens may have a negative refractive power, which can cooperate with the fifth lens to correct aberration. The surface of the object side of the sixth lens near the optical axis may be convex, and the surface shape of the sixth lens can be adjusted to correct aberration. The surface of the image side of the sixth lens near the optical axis may be concave, which can cooperate with the seventh lens to correct aberration.

[0122] The seventh lens may have a negative refractive power, which helps to balance the refractive power at the image side end of the optical imaging system group to correct aberration. The surface of the object side of the seventh lens near the optical axis may be concave, which can adjust the traveling direction of light rays and helps to increase the imaging surface. The surface of the image side of the seventh lens near the optical axis may be concave, which helps to shorten the back focal length.

[0123] At least one surface of at least one of the first lens to the seventh lens includes at least one inflection point. Thereby, the degree of change of the lens surface can be increased, which helps to correct aberration and compress the lens volume. In addition, at least one surface of at least two of the first lens to the seventh lens may include at least one inflection point. Furthermore, at least one surface of at least three of the first lens to the seventh lens may include at least one inflection point.

[0124] The off-axis portion of the object side surface of the sixth lens may include at least one critical point, which can adjust the surface shape of the sixth lens and helps to reduce surface reflection and correct off-axis aberration. The distance between at least one critical point of the object side surface of the sixth lens and the optical axis is Yc61, and the maximum distance between the optical effective area of the object side surface of the sixth lens and the optical axis is Y61, which satisfies the following condition: 0.30 < Yc61 / Y61 < 0.75. Thereby, the surface shape of the sixth lens can be further adjusted to correct aberration.

[0125] The off-axis portion of the image side surface of the sixth lens may include at least one critical point, which can adjust the surface shape of the sixth lens and helps to correct off-axis aberrations such as image curvature. The distance between at least one critical point of the image side surface of the sixth lens and the optical axis is Yc62, and the maximum distance between the optical effective area of the image side surface of the sixth lens and the optical axis is Y62, which satisfies the following condition: 0.25 < Yc62 / Y62 < 0.70. Thereby, the surface shape of the sixth lens can be further adjusted to correct aberration.

[0126] The off-axis portion of the image side surface of the seventh lens may include at least one critical point, which can adjust the incident angle of light rays on the imaging surface and helps to improve the image quality and the response efficiency of the electronic photosensitive element. The distance between at least one critical point of the image side surface of the seventh lens and the optical axis is Yc72, and the maximum distance between the optical effective area of the image side surface of the seventh lens and the optical axis is Y72, which satisfies the following condition: 0.10 < Yc72 / Y72 < 0.50. Thereby, the image quality can be further improved.

[0127] The Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, and the Abbe number of the sixth lens is V6, which satisfy the following conditions: 4.4 < (V5 + V6) / V4 < 12. Thereby, the lens materials can be coordinated with each other to correct aberrations such as chromatic aberration. In addition, it can satisfy the following conditions: 4.9 < (V5 + V6) / V4 < 11. Furthermore, it can satisfy the following conditions: 5.3 < (V5 + V6) / V4 < 10. Furthermore, it can satisfy the following conditions: 5.7 < (V5 + V6) / V4 < 9.0.

[0128] The distance between the first lens and the second lens on the optical axis is T12, and the distance between the second lens and the third lens on the optical axis is T23, which satisfy the following conditions: 0.70 < T23 / T12 < 3.6. Thereby, the distribution of the lenses at the object side end of the optical imaging system group can be adjusted to compress the volume at the object side end. In addition, it can satisfy the following conditions: 0.90 < T23 / T12 < 2.4. Furthermore, it can satisfy the following conditions: 1.1 < T23 / T12 < 1.8.

[0129] The distance between the second lens and the third lens on the optical axis is T23, and the distance between the sixth lens and the seventh lens on the optical axis is T67, which satisfy the following conditions: 2.1 < T67 / T23 < 5.4. Thereby, the distribution of the lenses in the optical imaging system group can be adjusted to compress the volume. In addition, it can satisfy the following conditions: 2.4 < T67 / T23 < 4.8. Furthermore, it can satisfy the following conditions: 2.7 < T67 / T23 < 4.3.

[0130] The thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the thickness of the third lens on the optical axis is CT3, the thickness of the fourth lens on the optical axis is CT4, 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 sixth lens and the seventh lens on the optical axis is T67, which satisfy the following conditions: 1.0 < (CT1 + CT2 + CT3 + CT4 + CT5 + CT6) / T67 < 3.5. Thereby, the distribution of the lenses in the optical imaging system group can be adjusted to compress the volume. In addition, it can satisfy the following conditions: 2.0 < (CT1 + CT2 + CT3 + CT4 + CT5 + CT6) / T67 < 3.2.

[0131] The sum of the distances between each two adjacent lenses in the optical imaging system group on the optical axis is ΣAT, and the distance between the second lens and the third lens on the optical axis is T23, which satisfy the following conditions: 5.5 < ΣAT / T23 < 14. Thereby, the lens distribution can be adjusted, which helps to balance the volume distribution of the optical imaging system group. In addition, it can satisfy the following conditions: 6.5 < ΣAT / T23 < 11.

[0132] The sum of the distances between adjacent lenses in the optical imaging system group along the optical axis is ΣAT, and the sum of the thicknesses of the lenses in the optical imaging system group along the optical axis is ΣCT, which satisfy the following condition: 1.3 < ΣCT / ΣAT < 1.6. Thereby, the lens distribution can be adjusted, which helps to compress the total length.

[0133] The focal length of the optical imaging system group is f, and the focal length of the second lens is f2, which satisfy the following condition: -3.5 < f2 / f < -2.0. Thereby, the refractive power of the second lens can be adjusted to correct aberrations.

[0134] 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 satisfy the following condition: -25 < f6 / R11 + f6 / R12 < -18. Thereby, the surface shape and refractive power of the sixth lens can be adjusted to correct aberrations.

[0135] The aperture value of the optical imaging system group is Fno, which satisfy the following condition: 1.3 < Fno < 2.4. Thereby, a balance can be achieved between illuminance and depth of field.

[0136] Half of the maximum viewing angle in the optical imaging system group is HFOV, which satisfy the following condition: 35.0 degrees < HFOV < 50.0 degrees. Thereby, the optical imaging system group can have the characteristic of a wide viewing angle and can avoid aberrations such as distortion caused by an excessive viewing angle. Additionally, it can satisfy the following condition: 37.5 degrees < HFOV < 45.0 degrees.

[0137] The focal length of the first lens is f1, and the focal length of the sixth lens is f6, which satisfy the following condition: -13 < f6 / f1 < -6.7. Thereby, the refractive power distribution of the optical imaging system group can be adjusted, which helps to achieve a balance among the viewing angle, volume, and imaging quality. Additionally, it can satisfy the following condition: -10 < f6 / f1 < -7.1.

[0138] The focal length of the optical imaging system group is f, the focal length of the third lens is f3, and the focal length of the fourth lens is f4, which satisfy the following condition: |f / f3| + |f / f4| < 0.75. Thereby, the third lens and the fourth lens can cooperate with each other, which helps to balance the refractive power distribution at the object side end and the image side end of the optical imaging system group. Additionally, it can satisfy the following condition: |f / f3| + |f / f4| < 0.60.

[0139] The distance from the object side surface of the first lens to the imaging surface along the optical axis is TL, and the entrance pupil diameter of the optical imaging system group is EPD, which satisfy the following condition: 1.8 < TL / EPD < 2.5. Thereby, a balance can be achieved between the total length and the aperture size.

[0140] The distance from the object side surface of the first lens to the imaging surface on the optical axis is TL, and the maximum image height of the optical imaging system group is ImgH, which satisfies the following condition: 1.0 < TL / ImgH < 1.6. Thereby, a balance can be achieved between reducing the total length and increasing the imaging surface, and it helps to increase the viewing angle.

[0141] The focal length of the first lens is f1, 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 satisfies the following condition: 2.9 < f1 / R1 + f1 / R2 < 3.6. Thereby, the surface shape and refractive power of the first lens can be adjusted, which helps to reduce the volume and increase the viewing angle.

[0142] The distance from the object side surface of the first lens to the imaging surface on the optical axis is TL, and the focal length of the optical imaging system group is f, which satisfies the following condition: 1.1 < TL / f < 1.4. Thereby, a balance can be achieved between reducing the total length and increasing the viewing angle.

[0143] The focal length of the optical imaging system group is f, and the focal length of the fifth lens is f5, which satisfies the following condition: 0.90 < f5 / f < 1.4. Thereby, the refractive power of the fifth lens can be adjusted, which helps to reduce the volume.

[0144] The focal length of the seventh lens is f7, 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 satisfies the following condition: -1.2 < f7 / R13 + f7 / R14 < 0. Thereby, the surface shape and refractive power of the seventh lens can be adjusted, which helps to correct the aberration. Additionally, it can satisfy the following condition: -0.80 < f7 / R13 + f7 / R14 < -0.10. Moreover, it can satisfy the following condition: -0.50 < f7 / R13 + f7 / R14 < -0.20.

[0145] The maximum distance between the optical effective area of the object side surface of the first lens and the optical axis is Y11, and the maximum distance between the optical effective area of the image side surface of the seventh lens and the optical axis is Y72, which satisfies the following condition: 2.0 < Y72 / Y11 < 4.0. Thereby, the traveling direction of the light can be adjusted, which helps to achieve a balance among the viewing angle, the size of the imaging surface, and the volume distribution.

[0146] Each technical feature in the above optical imaging system group of the present disclosure can be combined and configured to achieve the corresponding effects.

[0147] The optical imaging system assembly disclosed herein can use lenses made of glass or plastic. Using glass lenses increases the freedom of refractive power configuration within the optical imaging system assembly, and glass lenses can be manufactured using techniques such as grinding or molding. Using plastic lenses effectively reduces production costs. Furthermore, spherical or aspherical (ASP) surfaces can be incorporated into 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 disclosed herein. Aspherical surfaces can be manufactured using methods such as plastic injection molding or molding glass lenses.

[0148] In the optical imaging system group disclosed herein, additives can be selectively added to any (or more) lens materials to produce light absorption or light interference effects, thereby altering the transmittance of the lens for specific wavelengths of light and reducing stray light and color shift. For example, the additives may have the function of filtering out light in the 600nm–800nm ​​wavelength range to reduce excess red or infrared light; or they may filter out light in the 350nm–450nm wavelength range to reduce blue or ultraviolet light in the system. 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 to provide the aforementioned effects.

[0149] In the optical imaging system group provided in this disclosure, if the lens surface is aspherical, it means that the entire or a portion of the optically effective area of ​​the lens surface is aspherical.

[0150] In the optical imaging system group provided in this disclosure, if the lens surface is convex and the location of the convex surface is not defined, it means that the lens surface can be convex near the optical axis; if the lens surface is concave and the location of the concave surface is not defined, it means that the lens surface can be concave near the optical axis. In the optical imaging system group provided in this disclosure, if the lens has positive or negative refractive power, or the focal length of the lens, it can refer to the refractive power or focal length of the lens near the optical axis.

[0151] In the optical imaging system group provided in this disclosure, the critical point is the point on the lens surface that is tangent to a plane perpendicular to the optical axis, in addition to the point of intersection with the optical axis; the inflection point is the point where the positive and negative curvature of the lens surface intersects.

[0152] The imaging surface of the optical imaging system assembly disclosed herein can be a plane or a curved surface with any curvature, depending on the corresponding electronic photosensitive element, particularly a curved surface with a concave surface facing the object side. Furthermore, in the optical imaging system assembly of this disclosure, one or more imaging correction elements (such as planar elements) can be selectively arranged 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 the imaging correction element, such as curvature, thickness, refractive index, position, and surface shape (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 facing the object side near the imaging surface.

[0153] In the optical imaging system assembly disclosed herein, at least one element with a light-path-deflecting function, such as a prism or mirror, can be selectively arranged between the object and the imaging plane in the optical path. This provides greater spatial flexibility in the 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 22A as well as Figure 22B ,in Figure 22A A schematic diagram illustrating one configuration of the optical path reversing element LF in an optical imaging system according to this disclosure is provided. Figure 22B A schematic diagram illustrating another configuration of the optical path-modulating element LF in an optical imaging system according to this disclosure is shown. For example... Figure 22A as well as Figure 22B 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 configured as follows: Figure 22A The image shown is positioned between the subject and the lens group LG of the optical imaging system assembly, or as... Figure 22B The diagram shows the lens group LG positioned between the imaging plane IMG and the optical imaging system assembly. Please also refer to... Figure 22C The diagram illustrates a configuration of the two optical path switching elements LF1 and LF2 in an optical imaging system according to this disclosure. Figure 22CAs shown, the optical imaging system assembly can also extend 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 reversing element LF1, a second optical axis OA2, an optical path reversing element LF2, and a third optical axis OA3. The optical path reversing element LF1 is positioned between the subject and the lens group LG of the optical imaging system assembly, and the optical path reversing element LF2 is positioned between the lens group LG and the imaging plane IMG. The optical imaging system assembly can also selectively be configured with more than three optical path reversing elements. This disclosure is not limited to the type, number, and position of the optical path reversing elements disclosed in the accompanying drawings.

[0154] In addition, the optical imaging system assembly provided in this disclosure may include at least one aperture stop, such as an aperture stop, glare stop, or field stop, which can help reduce stray light and improve image quality.

[0155] In the optical imaging system assembly disclosed herein, the aperture configuration can be a front aperture or a center aperture. A front aperture means that the aperture is set between the subject and the first lens, while a center aperture means that the aperture is set between the first lens and the imaging plane. If the aperture is a front aperture, it can create a longer distance between the exit pupil of the optical imaging system assembly and the imaging plane, giving it a telecentric effect and increasing the efficiency of image reception by the CCD or CMOS sensor. If the aperture is a center aperture, it helps to expand the field of view of the optical imaging system assembly, giving it the advantages of a wide-angle lens.

[0156] This disclosure may appropriately incorporate a variable aperture element, which can be a mechanical component or a light-regulating element, capable of electrically or signal-controlled aperture size and shape. The mechanical component may include movable parts such as blade assemblies or shielding plates; the light-regulating element may include masking materials such as filter elements, electrochromic materials, or liquid crystal layers. The variable aperture element can enhance image adjustment capabilities by controlling the amount of light entering the image or the exposure time. Furthermore, the variable aperture element can also be the aperture of this disclosure, allowing adjustment of image quality, such as depth of field or exposure speed, by changing the aperture value.

[0157] The optical imaging system group disclosed herein can also be applied in various electronic devices such as three-dimensional (3D) image capture, digital cameras, mobile products, digital tablets, smart TVs, network monitoring equipment, motion-sensing game consoles, dashcams, reversing cameras, wearable products, and drones.

[0158] This disclosure provides an image-capturing device comprising an optical imaging system assembly as described above and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the optical imaging system assembly. Through lens refractive power and surface shape configuration, the viewing angle can be increased and the volume reduced, thereby achieving the goals of wide-angle and miniaturization. Preferably, the image-capturing device may further include a lens barrel, a support device, or a combination thereof.

[0159] This disclosure provides an electronic device that includes the aforementioned image capturing device. This improves image quality. Preferably, the aforementioned electronic device may further include a control unit, a display unit, a storage unit, a random access memory, or a combination thereof.

[0160] Based on the above implementation methods, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0161] <First Embodiment>

[0162] Please refer to Figure 1 as well as Figure 2 ,in Figure 1 A schematic diagram of an image-capturing device 1 according to a first embodiment of the present disclosure is shown. Figure 2 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the first embodiment. Figure 1 As can be seen, the imaging device 1 of the first embodiment includes an optical imaging system group (unspecified) and an electronic photosensitive element IS. The optical imaging system group includes, in sequence from the object side to the image side of the optical path, an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a third lens E3, a fourth lens E4, an aperture stop S2, 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 of the optical imaging system group. The optical imaging system group includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interposed lenses between the seven lenses.

[0163] 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 are aspherical. Additionally, in conjunction with a reference... Figure 17 The diagram illustrates, based on some parameters from the first embodiment, the inflection point IP of each lens, and the critical point CP of the image-side surfaces of the sixth and seventh lenses. Figure 17 It can be seen that the object-side surface of the first lens contains a curvature point IP, and the image-side surface of the first lens contains a curvature point IP.

[0164] 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 are aspherical. Additionally, the object-side surface of the second lens contains two inflection points IP (marked at...). Figure 17 ).

[0165] 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 concave near the optical axis; both are aspherical. Additionally, the object-side surface of the third lens includes a curvature point IP (marked at...). Figure 17 The image-side surface of the third lens contains a curvature point IP (marked at...). Figure 17 ).

[0166] 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 are aspherical. Additionally, the image-side surface of the fourth lens includes a curvature point IP (marked at...). Figure 17 ).

[0167] 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 are aspherical. Additionally, the object-side surface of the fifth lens contains two inflection points IP (marked at...). Figure 17 The image-side surface of the fifth lens contains two inflection points IP (marked at...). Figure 17 ).

[0168] The sixth lens, E6, 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 are aspherical. Additionally, the object-side surface of the sixth lens contains two inflection points IP (marked at...). Figure 17 And its off-axis location contains a critical point CP (marked at...). Figure 17 The image-side surface of the sixth lens contains two inflection points IP (marked at...). Figure 17 And its off-axis location contains a critical point CP (marked at...). Figure 17 ).

[0169] The seventh lens, E7, has negative refractive power and is made of plastic. Both its object-side and image-side surfaces are concave near the optical axis, and both are aspherical. Additionally, the object-side surface of the seventh lens includes a curvature point IP (marked at...). Figure 17 The image-side surface of the seventh lens contains two inflection points IP (marked at...). Figure 17 And its off-axis location contains a critical point CP (marked at...). Figure 17 ).

[0170] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG without affecting the focal length of the optical imaging system group.

[0171] The equations for the aspherical surfaces of the above lenses are expressed as follows:

[0172] ;

[0173] in:

[0174] 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;

[0175] Y: The perpendicular distance between a point on the aspherical curve and the optical axis;

[0176] R: Radius of curvature;

[0177] k: cone coefficient; and

[0178] Ai: The i-th order aspherical coefficient.

[0179] In the optical imaging system group of the first embodiment, the focal length of the optical imaging system group is f, the aperture value (f-number) of the optical imaging system group is Fno, and half of the maximum field of view in the optical imaging system group is HFOV, with the following values: f = 5.45 mm; Fno = 1.75; and HFOV = 42.6 degrees.

[0180] In the optical imaging system group of the first embodiment, the Abbe number of the fourth lens E4 is V4, the Abbe number of the fifth lens E5 is V5, and the Abbe number of the sixth lens E6 is V6, which satisfies the following condition: (V5+V6) / V4=7.98.

[0181] In the optical imaging system group of the first embodiment, the thickness of the first lens E1 on the optical axis is CT1, the thickness of the second lens E2 on the optical axis is CT2, the thickness of the third lens E3 on the optical axis is CT3, the thickness of the fourth lens E4 on the optical axis is CT4, the thickness of the fifth lens E5 on the optical axis is CT5, the thickness of the sixth lens E6 on the optical axis is CT6, the distance between the first lens E1 and the second lens E2 on the optical axis is T12, the distance between the second lens E2 and the third lens E3 on the optical axis is T23, and the distance between the sixth lens E6 and the seventh lens E7 on the optical axis is T67, which satisfies the following conditions: (CT1+CT2+CT3+CT4+CT5+CT6) / T67=2.87; T23 / T12=1.31; and T67 / T23=3.55.

[0182] In the optical imaging system group of the first embodiment, the distance from the object-side surface of the first lens to the imaging plane IMG on the optical axis is TL, the entrance pupil diameter of the optical imaging system group is EPD, the focal length of the optical imaging system group is f, and the maximum image height of the optical imaging system group is ImgH, which satisfies the following conditions: TL / EPD = 2.10; TL / f = 1.20; and TL / ImgH = 1.28.

[0183] In the optical imaging system group of the first embodiment, the optical axis spacing between the first lens E1 and the second lens E2 is T12, the optical axis spacing between the second lens E2 and the third lens E3 is T23, the optical axis spacing between the third lens E3 and the fourth lens E4 is T34, the optical axis spacing between the fourth lens E4 and the fifth lens E5 is T45, the optical axis spacing between the fifth lens E5 and the sixth lens E6 is T56, and the optical axis spacing between the sixth lens E6 and the seventh lens E7 is T67. The sum of the optical axis spacing between any two adjacent lenses in the optical imaging system group is ΣAT. The optical axis thickness of the first lens E1 is CT1, the optical axis thickness of the second lens E2 is CT2, and the optical axis thickness of the third lens E1 is CT2. The thickness of lens E3 on the optical axis is CT3, the thickness of lens E4 on the optical axis is CT4, the thickness of lens E5 on the optical axis is CT5, the thickness of lens E6 on the optical axis is CT6, and the thickness of lens E7 on the optical axis is CT7. The sum of the thicknesses of all lenses in the optical imaging system group on the optical axis is ΣCT, which satisfies the following conditions: ΣAT / T23=8.52; and ΣCT / ΣAT=1.41. In the first embodiment, the distance between two adjacent lenses on the optical axis is the distance between the two adjacent surfaces of the two adjacent lenses on the optical axis; ΣCT=CT1+CT2+CT3+CT4+CT5+CT6+CT7; ΣAT=T12+T23+T34+T45+T56+T67.

[0184] In the optical imaging system group of the first embodiment, the focal length of the optical imaging system group is f, the focal length of the third lens E3 is f3, and the focal length of the fourth lens E4 is f4, which satisfies the following condition: |f / f3|+|f / f4|=0.37.

[0185] In the optical imaging system group of the first embodiment, the focal length of the first lens E1 is f1, 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 satisfies the following condition: f1 / R1+f1 / R2=3.21.

[0186] In the optical imaging system group of the first embodiment, the focal length of the optical imaging system group is f, the focal length of the first lens E1 is f1, the focal length of the second lens E2 is f2, the focal length of the fifth lens E5 is f5, and the focal length of the sixth lens E6 is f6, which satisfy the following conditions: f2 / f = -2.62; f5 / f = 1.18; and f6 / f1 = -7.52.

[0187] In the optical imaging system group of the first embodiment, the focal length of the sixth lens E6 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 satisfies the following condition: f6 / R11+f6 / R12=-21.42.

[0188] In the optical imaging system group of the first embodiment, the focal length of the seventh lens E7 is f7, 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 satisfies the following condition: f7 / R13+f7 / R14=-0.26.

[0189] In the optical imaging system assembly of the first embodiment, in conjunction with Figure 17 As shown, the maximum distance between the optically effective area of ​​the object-side surface of the first lens and the optical axis is Y11, and the maximum distance between the optically effective area of ​​the image-side surface of the seventh lens and the optical axis is Y72, which satisfies the following condition: Y72 / Y11=2.61.

[0190] In the optical imaging system assembly of the first embodiment, in conjunction with Figure 17 As shown, the distance between the critical point of the object-side surface of the sixth lens and the optical axis is Yc61, the maximum distance between the optically effective area of ​​the object-side surface of the sixth lens and the optical axis is Y61, the distance between the critical point of the image-side surface of the sixth lens and the optical axis is Yc62, the maximum distance between the optically effective area of ​​the image-side surface of the sixth lens and the optical axis is Y62, the distance between the critical point of the image-side surface of the seventh lens and the optical axis is Yc72, and the maximum distance between the optically effective area of ​​the image-side surface of the seventh lens and the optical axis is Y72, which satisfy the following conditions: Yc61 / Y61=0.50; Yc62 / Y62=0.47; and Yc72 / Y72=0.28.

[0191] Please refer to Table 1 and Table 2 below.

[0192]

[0193]

[0194]

[0195]

[0196]

[0197] Table 1 is... Figure 1 The first embodiment provides detailed structural data, where the units for radius of curvature, thickness, and focal length are mm, and surfaces 0-20 sequentially represent the surfaces from the object side to the image side, with the refractive index measured at a reference wavelength. Table 2 shows the aspherical data in the first embodiment, where k represents the cone coefficient in the aspherical curve equation, and A4-A30 represent the 4th-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.

[0198] <Second Embodiment>

[0199] Please refer to Figure 3 as well as Figure 4 ,in Figure 3 A schematic diagram of an image-capturing device 2 according to a second embodiment of the present disclosure is shown. Figure 4 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the second embodiment. Figure 3 As can be seen, the imaging device 2 of the second embodiment includes an optical imaging system group (unspecified) and an electronic photosensitive element IS. The optical imaging system group includes, in sequence from the object side to the image side of the optical path, an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a third lens E3, a fourth lens E4, an aperture stop S2, 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 of the optical imaging system group. The optical imaging system group includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interposed lenses between the seven lenses.

[0200] 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 which are aspherical. In addition, the object-side surface of the first lens includes a point of inflection, and the image-side surface of the first lens includes a point of inflection.

[0201] 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 which are aspherical. In addition, the object-side surface of the second lens contains two inflection points.

[0202] 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 concave near the optical axis; both are aspherical. In addition, the object-side surface of the third lens contains a point of inflection, and the image-side surface of the third lens contains a point of inflection.

[0203] 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 are aspherical. In addition, the image-side surface of the fourth lens contains a point of inflection.

[0204] 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 are aspherical. Furthermore, the object-side surface of the fifth lens contains one inflection point, and the image-side surface contains two inflection points.

[0205] The sixth lens, E6, 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 are aspherical. Furthermore, the object-side surface of the sixth lens contains two inflection points and a critical point off-axis, as does the image-side surface.

[0206] 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 also concave near the optical axis, both of which are aspherical. In addition, the object-side surface of the seventh lens contains one inflection point, and the image-side surface contains two inflection points and a critical point off-axis.

[0207] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG without affecting the focal length of the optical imaging system group.

[0208] Please also refer to Table 3 and Table 4 below.

[0209]

[0210]

[0211]

[0212]

[0213]

[0214] In the second embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions of the parameters in the table below are the same as in the first embodiment, and will not be repeated here.

[0215] By referring to Tables 3 and 4, the following data can be calculated:

[0216]

[0217] <Third Embodiment>

[0218] Please refer to Figure 5 as well as Figure 6 ,in Figure 5 A schematic diagram of an image-capturing device 3 according to a third embodiment of the present disclosure is shown. Figure 6 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the third embodiment. Figure 5As can be seen, the imaging device 3 of the third embodiment includes an optical imaging system group (unspecified) and an electronic photosensitive element IS. The optical imaging system group includes, in sequence from the object side to the image side of the optical path, an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a third lens E3, a fourth lens E4, an aperture stop S2, 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 of the optical imaging system group. The optical imaging system group includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interposed lenses between the seven lenses.

[0219] 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 which are aspherical. In addition, the image-side surface of the first lens contains a point of inflection.

[0220] 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 which are aspherical. In addition, the object-side surface of the second lens contains two inflection points.

[0221] 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 also convex near the optical axis; both are aspherical. In addition, the object-side surface of the third lens contains a point of inflection.

[0222] 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 also concave near the optical axis; both are aspherical. In addition, the image-side surface of the fourth lens contains two inflection points.

[0223] 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 are aspherical. Furthermore, the object-side surface of the fifth lens contains one inflection point, and the image-side surface contains two inflection points.

[0224] The sixth lens, E6, 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 are aspherical. Furthermore, the object-side surface of the sixth lens contains two inflection points and a critical point off-axis, as does the image-side surface.

[0225] 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 also concave near the optical axis, both of which are aspherical. In addition, the object-side surface of the seventh lens contains one inflection point, and the image-side surface contains two inflection points and a critical point off-axis.

[0226] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG without affecting the focal length of the optical imaging system group.

[0227] Please also refer to Table 5 and Table 6 below.

[0228]

[0229]

[0230]

[0231]

[0232] In the third embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions of the parameters in the table below are the same as in the first embodiment, and will not be repeated here.

[0233] By referring to Tables 5 and 6, the following data can be calculated:

[0234]

[0235]

[0236] <Fourth Embodiment>

[0237] Please refer to Figure 7 as well as Figure 8 ,in Figure 7 A schematic diagram of an image-capturing device 4 according to the fourth embodiment of this disclosure is shown. Figure 8 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fourth embodiment. Figure 7 As can be seen, the imaging device 4 of the fourth embodiment includes an optical imaging system group (unspecified) and an electronic photosensitive element IS. The optical imaging system group includes, in sequence from the object side to the image side of the optical path, 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, 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 of the optical imaging system group. The optical imaging system group includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interposed lenses between the seven lenses.

[0238] 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 are aspherical.

[0239] 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 which are aspherical. In addition, the object-side surface of the second lens contains two inflection points.

[0240] 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 concave near the optical axis; both are aspherical. In addition, the object-side surface of the third lens contains a point of inflection, and the image-side surface of the third lens contains a point of inflection.

[0241] 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 are aspherical. In addition, the image-side surface of the fourth lens contains a point of inflection.

[0242] 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 are aspherical. Furthermore, both the object-side and image-side surfaces of the fifth lens contain two inflection points.

[0243] The sixth lens, E6, 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 are aspherical. Furthermore, the object-side surface of the sixth lens contains two inflection points and a critical point off-axis, as does the image-side surface.

[0244] 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 also concave near the optical axis, both of which are aspherical. In addition, the object-side surface of the seventh lens contains one inflection point, and the image-side surface contains two inflection points and a critical point off-axis.

[0245] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG without affecting the focal length of the optical imaging system group.

[0246] Please also refer to Table 7 and Table 8 below.

[0247]

[0248]

[0249]

[0250]

[0251] In the fourth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions of the parameters in the table below are the same as in the first embodiment, and will not be repeated here.

[0252] By referring to Tables 7 and 8, the following data can be calculated:

[0253]

[0254] <Fifth Embodiment>

[0255] Please refer to Figure 9 as well as Figure 10 ,in Figure 9 A schematic diagram of an image-capturing device 5 according to the fifth embodiment of this disclosure is shown. Figure 10 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fifth embodiment. Figure 9 As can be seen, the image capturing device 5 of the fifth embodiment includes an optical imaging system group (unspecified) and an electronic photosensitive element IS. The optical imaging system group includes, in sequence from the object side to the image side of the optical path, an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a third lens E3, a fourth lens E4, an aperture stop S2, 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 of the optical imaging system group. The optical imaging system group includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interposed lenses between the seven lenses.

[0256] 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 which are aspherical. In addition, the object-side surface of the first lens includes a point of inflection, and the image-side surface of the first lens includes a point of inflection.

[0257] 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 which are aspherical. In addition, the object-side surface of the second lens contains two inflection points.

[0258] 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 are aspherical. In addition, the object-side surface of the third lens contains a point of inflection, and the image-side surface of the third lens contains a point of inflection.

[0259] 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 concave near the optical axis, both of which are aspherical. In addition, the object-side surface of the fourth lens contains one inflection point, and the image-side surface of the fourth lens contains two inflection points.

[0260] 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 are aspherical. Furthermore, both the object-side and image-side surfaces of the fifth lens contain two inflection points.

[0261] The sixth lens, E6, 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 are aspherical. Furthermore, the object-side surface of the sixth lens contains two inflection points and a critical point off-axis, as does the image-side surface.

[0262] 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 also concave near the optical axis, both being aspherical. In addition, the object-side surface of the seventh lens contains a point of inflection, and the image-side surface of the seventh lens contains a point of inflection and a critical point off-axis.

[0263] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG without affecting the focal length of the optical imaging system group.

[0264] Please also refer to Tables 9 and 10 below.

[0265]

[0266]

[0267]

[0268]

[0269] In the fifth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions of the parameters in the table below are the same as in the first embodiment, and will not be repeated here.

[0270] By referring to Tables 9 and 10, the following data can be calculated:

[0271]

[0272] <Sixth Embodiment>

[0273] Please refer to Figure 11 as well as Figure 12 ,in Figure 11 A schematic diagram of an image-capturing device 6 according to the sixth embodiment of this disclosure is shown. Figure 12 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the sixth embodiment. Figure 11As can be seen, the imaging device 6 of the sixth embodiment includes an optical imaging system group (unspecified) and an electronic photosensitive element IS. The optical imaging system group includes, in sequence from the object side to the image side of the optical path, an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a third lens E3, a fourth lens E4, an aperture stop S2, 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 of the optical imaging system group. The optical imaging system group includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interposed lenses between the seven lenses.

[0274] 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 which are aspherical. In addition, the image-side surface of the first lens contains a point of inflection.

[0275] 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 also concave near the optical axis; both are aspherical. In addition, the object-side surface of the second lens contains a point of inflection.

[0276] 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 concave near the optical axis; both are aspherical. In addition, the object-side surface of the third lens contains a point of inflection, and the image-side surface of the third lens contains a point of inflection.

[0277] 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 are aspherical. In addition, the image-side surface of the fourth lens contains a point of inflection.

[0278] 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 are aspherical. Furthermore, both the object-side and image-side surfaces of the fifth lens contain two inflection points.

[0279] The sixth lens, E6, 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 are aspherical. Furthermore, the object-side surface of the sixth lens contains two inflection points and a critical point off-axis, as does the image-side surface.

[0280] 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 also concave near the optical axis, both of which are aspherical. In addition, the object-side surface of the seventh lens contains one inflection point, and the image-side surface contains two inflection points and a critical point off-axis.

[0281] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG without affecting the focal length of the optical imaging system group.

[0282] Please also refer to Table 11 and Table 12 below.

[0283]

[0284]

[0285]

[0286] In the sixth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions of the parameters in the table below are the same as in the first embodiment, and will not be repeated here.

[0287] By referring to Tables 11 and 12, the following data can be calculated:

[0288]

[0289] <Seventh Embodiment>

[0290] Please refer to Figure 13 as well as Figure 14 ,in Figure 13 A schematic diagram of an image-capturing device 7 according to the seventh embodiment of this disclosure is shown. Figure 14 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the seventh embodiment. Figure 13 As can be seen, the imaging device 7 of the seventh embodiment includes an optical imaging system group (unspecified) and an electronic photosensitive element IS. The optical imaging system group includes, in sequence from the object side to the image side of the optical path, 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, 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 of the optical imaging system group. The optical imaging system group includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interposed lenses between the seven lenses.

[0291] 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 which are aspherical. In addition, the object-side surface of the first lens includes a point of inflection, and the image-side surface of the first lens includes a point of inflection.

[0292] 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 which are aspherical. In addition, the object-side surface of the second lens contains two inflection points.

[0293] 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 concave near the optical axis; both are aspherical. In addition, the object-side surface of the third lens contains a point of inflection, and the image-side surface of the third lens contains a point of inflection.

[0294] 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 are aspherical. In addition, the image-side surface of the fourth lens contains a point of inflection.

[0295] 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 are aspherical. Furthermore, the object-side surface of the fifth lens contains one inflection point, and the image-side surface contains two inflection points.

[0296] The sixth lens, E6, 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 are aspherical. Furthermore, the object-side surface of the sixth lens contains two inflection points and a critical point off-axis, as does the image-side surface.

[0297] 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 also concave near the optical axis, both being aspherical. In addition, the object-side surface of the seventh lens contains a point of inflection, and the image-side surface of the seventh lens contains a point of inflection and a critical point off-axis.

[0298] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG without affecting the focal length of the optical imaging system group.

[0299] Please also refer to Table 13 and Table 14 below.

[0300]

[0301]

[0302]

[0303]

[0304]

[0305] In the seventh embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions of the parameters in the table below are the same as in the first embodiment, and will not be repeated here.

[0306] The following data can be calculated by referring to Tables 13 and 14:

[0307]

[0308] <Eighth Embodiment>

[0309] Please refer to Figure 15 as well as Figure 16 ,in Figure 15 A schematic diagram of an image-capturing device 8 according to the eighth embodiment of this disclosure is shown. Figure 16 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the eighth embodiment. Figure 15 As can be seen, the imaging device 8 of the eighth embodiment includes an optical imaging system group (unspecified) and an electronic photosensitive element IS. The optical imaging system group includes, in sequence from the object side to the image side of the optical path, an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a third lens E3, a fourth lens E4, an aperture stop S2, 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 of the optical imaging system group. The optical imaging system group includes seven lenses (E1, E2, E3, E4, E5, E6, E7), and there are no other interposed lenses between the seven lenses.

[0310] 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 which are aspherical. In addition, the image-side surface of the first lens contains a point of inflection.

[0311] 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 which are aspherical. In addition, the object-side surface of the second lens contains two inflection points.

[0312] 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 concave near the optical axis; both are aspherical. In addition, the object-side surface of the third lens contains a point of inflection, and the image-side surface of the third lens contains a point of inflection.

[0313] 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 also convex near the optical axis; both are aspherical. In addition, the object-side surface of the fourth lens contains a point of inflection, and the image-side surface of the fourth lens contains a point of inflection.

[0314] 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 are aspherical. In addition, the image-side surface of the fifth lens contains two inflection points.

[0315] The sixth lens, E6, 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 are aspherical. Furthermore, the object-side surface of the sixth lens contains two inflection points and a critical point off-axis, as does the image-side surface.

[0316] 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 also concave near the optical axis, both of which are aspherical. In addition, the object-side surface of the seventh lens contains one inflection point, and the image-side surface contains two inflection points and a critical point off-axis.

[0317] The filter element E8 is made of glass and is positioned between the seventh lens E7 and the imaging surface IMG without affecting the focal length of the optical imaging system group.

[0318] Please also refer to Table 15 and Table 16 below.

[0319]

[0320]

[0321]

[0322]

[0323]

[0324] In the eighth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions of the parameters in the table below are the same as in the first embodiment, and will not be repeated here.

[0325] By referring to Tables 15 and 16, the following data can be calculated:

[0326]

[0327] <Ninth Embodiment>

[0328] Please refer to Figure 18 This diagram illustrates a perspective view of an image-capturing device 100 according to the ninth embodiment of this disclosure. Figure 18As can be seen, the image capturing device 100 in the ninth embodiment is a camera module. The image capturing device 100 includes an imaging lens 101, a driving device assembly 102, and an electronic image sensor 103. The imaging lens 101 includes the optical imaging system assembly disclosed herein and a lens barrel (not otherwise labeled) that carries the optical imaging system assembly. The image capturing device 100 uses the imaging lens 101 to focus light and capture an image of the subject, and works with the driving device assembly 102 to focus the image. Finally, the image is captured on the electronic image sensor 103, and the image data is output.

[0329] The drive unit assembly 102 can be an autofocus module, and its driving method can be a voice coil motor, microelectromechanical system, piezoelectric system, or shape memory metal drive system. The drive unit assembly 102 enables the optical imaging system assembly to achieve a better imaging position, and can provide clear images of the subject at different object distances.

[0330] The image capturing device 100 may be equipped with a high-sensitivity and low-noise electronic image sensor 103 (such as CMOS or CCD) disposed on the imaging surface of the optical imaging system assembly, which can truly present the good imaging quality of the optical imaging system assembly. In addition, the image capturing device 100 may also include an image stabilization module 104, which may be a kinetic energy sensing element such as an accelerometer, gyroscope, or Hall effect sensor. In the ninth embodiment, the image stabilization module 104 is a gyroscope, but it is not limited thereto. By adjusting the changes in different axes of the optical imaging system assembly to compensate for the blurry image caused by shaking at the moment of shooting, the imaging quality of shooting in dynamic and low-light scenes is further improved, and advanced image compensation functions such as optical image stabilization (OIS) and electronic image stabilization (EIS) are provided.

[0331] <Tenth Embodiment>

[0332] Please refer to Figure 19A , Figure 19B and Figure 19C ,in Figure 19A A schematic diagram showing one side of an electronic device 200 according to the tenth embodiment of this disclosure is provided. Figure 19B Drawing according to Figure 19A A schematic diagram of the other side of the electronic device 200. Figure 19C Drawing according to Figure 19A A system schematic diagram of the electronic device 200. (By...) Figure 19A , Figure 19B and Figure 19CAs can be seen, the electronic device 200 of the tenth embodiment is a smartphone. The electronic device 200 includes image capturing devices 100, 110, 120, 130, and 140, a flash module 201, a focus assist module 202, an image signal processor (ISP), a user interface 204, and an image software processor 205, wherein the image capturing devices 120, 130, and 140 are front-facing cameras. When the user takes a picture of the subject 206 through the user interface 204, the electronic device 200 uses the image capturing devices 100, 110, 120, 130, and 140 to capture the image, activates the flash module 201 for supplemental lighting, and uses the subject distance information provided by the focus assist module 202 for fast focusing. In addition, the image signal processor 203 and the image software processor 205 perform image optimization processing to further improve the image quality produced by the image lens. The focus assist module 202 can use an infrared or laser focus assist system to achieve fast focusing, and the user interface 204 can use a touch screen or a physical shooting button, combined with the diverse functions of the image processing software for image shooting and image processing.

[0333] At least one of the image-capturing devices 100, 110, 120, 130, and 140 in the tenth embodiment may include the optical imaging system group disclosed herein, and may have the same or similar structure as the image-capturing device 100 in the aforementioned ninth embodiment, which will not be described again here. Specifically, the image-capturing devices 100 and 110 in the tenth embodiment may be a wide-angle image-capturing device and an ultra-wide-angle image-capturing device, or a wide-angle image-capturing device and a telephoto image-capturing device, respectively. The image-capturing devices 120, 130, and 140 may be a wide-angle image-capturing device, an ultra-wide-angle image-capturing device, and a TOF module (Time-Of-Flight); however, this configuration is not limiting. Furthermore, the connection relationships between the image-capturing devices 110, 120, 130, and 140 and other components can be... Figure 19C The image acquisition device 100 shown in the figure is the same as that shown in the figure, or may be adapted to the type of image acquisition device, and will not be shown or described in detail here.

[0334] <Eleventh Embodiment>

[0335] Please refer to Figure 20 The diagram illustrates a side view of an electronic device 300 according to the eleventh embodiment of this disclosure. The electronic device 300 of the eleventh embodiment is a smartphone, and the electronic device 300 includes image capturing devices 310, 320, and 330 and a flash module 301.

[0336] The electronic device 300 of the eleventh embodiment may include the same or similar elements as those in the tenth embodiment, and the connection relationships between the image capturing devices 310, 320, and 330 and other elements may also be the same or similar as those disclosed in the tenth embodiment, which will not be repeated here. The image capturing devices 310, 320, and 330 in the eleventh embodiment may all include the optical imaging system group disclosed herein, and may all have the same or similar structure as the image capturing device 100 in the ninth embodiment, which will not be repeated here. Specifically, the image capturing device 310 may be an ultra-wide-angle image capturing device, the image capturing device 320 may be a wide-angle image capturing device, and the image capturing device 330 may be a telescopic image capturing device (which may include an optical path reversing element), or may be other types of image capturing devices, and is not limited to this configuration.

[0337] <Twelfth Embodiment>

[0338] Please refer to Figure 21 The diagram illustrates a side view of an electronic device 400 according to the twelfth embodiment of the present disclosure. The electronic device 400 of the twelfth embodiment is a smartphone, and the electronic device 400 includes image capturing devices 410, 420, 430, 440, 450, 460, 470, 480, 490 and a flash module 401.

[0339] The electronic device 400 of the twelfth embodiment may include the same or similar components as those in the tenth embodiment, and the connection relationships between the image capturing devices 410, 420, 430, 440, 450, 460, 470, 480, 490 and the flash module 401 and other components may also be the same or similar as those disclosed in the tenth embodiment, and will not be repeated here. The image capturing devices 410, 420, 430, 440, 450, 460, 470, 480, and 490 in the twelfth embodiment may all include the optical imaging system group disclosed herein, and may all have the same or similar structure as the image capturing device 100 in the ninth embodiment, and will not be repeated here.

[0340] In detail, imaging devices 410 and 420 can be ultra-wide-angle imaging devices, imaging devices 430 and 440 can be wide-angle imaging devices, imaging devices 450 and 460 can be telephoto imaging devices, imaging devices 470 and 480 can be telephoto imaging devices (which may include optical path bending elements), and imaging device 490 can be a TOF module, or other types of imaging devices, and is not limited to this configuration.

[0341] Although the present disclosure has been described above with reference to embodiments, it is not intended to limit the present disclosure. Any person skilled in the art may make various modifications and alterations without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the scope defined in the appended claims.

Claims

1. An optical imaging system assembly, characterized in that, It includes seven lenses, which are, in order from the object side to the image side of 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; each of these lenses has an object-side surface facing the object side and an image-side surface facing the image side; Among them, the first lens has a positive refractive power; The second lens has a negative refractive power; The object-side surface of the third lens is convex near the optical axis; The fifth lens has a positive refractive power, and its image-side surface is convex near the optical axis; The sixth lens has a negative refractive power, its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis; and The seventh lens has a negative refractive power; Among them, at least one surface of at least one lens from the first lens to the seventh lens includes at least one inflection point; Among them, the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the Abbe number of the sixth lens is V6, the distance between the first lens and the second lens on the optical axis is T12, and the distance between the second lens and the third lens on the optical axis is T23, which satisfy the following conditions: 4.4 < (V5 + V6) / V4 < 12; and 0.70 < T23 / T12 < 3.

6.

2. The optical imaging system assembly according to claim 1, characterized in that, The Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the Abbe number of the sixth lens is V6, which satisfy the following conditions: 4.9 < (V5 + V6) / V4 < 11.

3. The optical imaging system assembly according to claim 1, characterized in that, The distance between the first lens and the second lens on the optical axis is T12, and the distance between the second lens and the third lens on the optical axis is T23, which satisfy the following conditions: 1.1 < T23 / T12 < 1.

8.

4. The optical imaging system assembly according to claim 1, characterized in that, The sum of the distances between each two adjacent lenses of the optical imaging system group on the optical axis is ΣAT, the distance between the second lens and the third lens on the optical axis is T23, and the sum of the thicknesses of each lens of the optical imaging system group on the optical axis is ΣCT, which satisfy the following conditions: 5.5 < ΣAT / T23 < 14; and 1.3 < ΣCT / ΣAT < 1.

6.

5. The optical imaging system assembly according to claim 1, characterized in that, The focal length of the optical imaging system group is f, and the focal length of the second lens is f2, which satisfy the following conditions: -3.5 < f2 / f < -2.

0.

6. The optical imaging system assembly according to claim 1, characterized in that, 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 satisfy the following conditions: -25 < f6 / R11 + f6 / R12 < -18.

7. The optical imaging system assembly according to claim 1, characterized in that, The aperture value of the optical imaging system group is Fno, and half of the maximum viewing angle of the optical imaging system group is HFOV, which satisfy the following conditions: 1.3 < Fno < 2.4; and 35.0 degrees < HFOV < 50.0 degrees.

8. The optical imaging system assembly according to claim 1, characterized in that, The focal length of the first lens is f1, and the focal length of the sixth lens is f6, which satisfy the following conditions: -13 < f6 / f1 < -6.

7.

9. The optical imaging system assembly according to claim 1, characterized in that, The object-side surface of the first lens is convex near the optical axis; the distance between at least one critical point of the image-side surface of the sixth lens and the optical axis is Yc62, and the maximum distance between the optical effective area of the image-side surface of the sixth lens and the optical axis is Y62, which satisfy the following conditions: 0.25 < Yc62 / Y62 < 0.

70.

10. An optical imaging system assembly, characterized in that, Comprising seven lenses, which are, in order from the object side to the image side of 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; each of these lenses has an object-side surface facing the object side and an image-side surface facing the image side; Among them, the first lens has a positive refractive power; The second lens has a negative refractive power; The object-side surface of the third lens is convex near the optical axis; The fifth lens has a positive refractive power, its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis; The sixth lens has a negative refractive power, and its image-side surface is concave near the optical axis; and The seventh lens has a negative refractive power, its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis; Among them, at least one surface of at least one lens from the first lens to the seventh lens includes at least one inflection point; Among them, the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the Abbe number of the sixth lens is V6, the distance between the second lens and the third lens on the optical axis is T23, and the distance between the sixth lens and the seventh lens on the optical axis is T67, which satisfy the following conditions: 5.3 < (V5 + V6) / V4 < 10; and 2.1 < T67 / T23 < 5.

4.

11. The optical imaging system assembly according to claim 10, characterized in that, The Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the Abbe number of the sixth lens is V6, which satisfy the following conditions: 5.7 < (V5 + V6) / V4 < 9.

0.

12. The optical imaging system assembly according to claim 10, characterized in that, The distance between the second lens and the third lens on the optical axis is T23, the distance between the sixth lens and the seventh lens on the optical axis is T67, the focal length of the optical imaging system group is f, the focal length of the third lens is f3, and the focal length of the fourth lens is f4, which satisfy the following conditions: 2.4 < T67 / T23 < 4.8; and |f / f3| + |f / f4| < 0.

75.

13. The optical imaging system assembly according to claim 10, characterized in that, The distance from the object-side surface of the first lens to an imaging surface on the optical axis is TL, the entrance pupil diameter of the optical imaging system group is EPD, and the maximum image height of the optical imaging system group is ImgH, which satisfy the following conditions: 1.8 < TL / EPD < 2.5; and 1.0 < TL / ImgH < 1.

6.

14. The optical imaging system assembly according to claim 10, characterized in that, The focal length of the first lens is f1, 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 satisfy the following conditions: 2.9 < f1 / R1 + f1 / R2 < 3.

6.

15. The optical imaging system assembly according to claim 10, characterized in that, The object-side surface of the first lens is convex near the optical axis, and the image-side surface of the first lens is concave near the optical axis.

16. The optical imaging system assembly according to claim 10, characterized in that, The focal length of the first lens is f1, and the focal length of the sixth lens is f6, which satisfy the following conditions: -13 < f6 / f1 < -6.

7.

17. The optical imaging system assembly according to claim 10, characterized in that, The distance between at least one critical point on the image-side surface of the seventh lens and the optical axis is Yc72, and the maximum distance between the optical effective area of the image-side surface of the seventh lens and the optical axis is Y72, which satisfy the following conditions: 0.10 < Yc72 / Y72 < 0.

50.

18. An optical imaging system assembly, characterized in that, Comprising seven lenses, which are, in order from the object side to the image side of 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; each of these lenses has an object-side surface facing the object side and an image-side surface facing the image side; Among them, the first lens has a positive refractive power, the object-side surface of the first lens near the optical axis is convex, and the image-side surface of the first lens near the optical axis is concave; The second lens has a negative refractive power; The object-side surface of the third lens near the optical axis is convex; The fifth lens has a positive refractive power; The sixth lens has a negative refractive power; and The seventh lens has a negative refractive power; Among them, at least one surface of at least two lenses from the first lens to the seventh lens contains at least one inflection point; Among them, the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the Abbe number of the sixth lens is V6, the thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the thickness of the third lens on the optical axis is CT3, the thickness of the fourth lens on the optical axis is CT4, the thickness of the fifth lens on the optical axis is CT5, the thickness of the sixth lens on the optical axis is CT6, the axial distance between the sixth lens and the seventh lens is T67, the maximum distance between the optical effective area of the object-side surface of the first lens and the optical axis is Y11, and the maximum distance between the optical effective area of the image-side surface of the seventh lens and the optical axis is Y72, which satisfy the following conditions: 4.4 < (V5 + V6) / V4 < 12; 1.0 < (CT1 + CT2 + CT3 + CT4 + CT5 + CT6) / T67 < 3.5; and 2.0 < Y72 / Y11 < 4.

0.

19. The optical imaging system assembly according to claim 18, characterized in that, The Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the Abbe number of the sixth lens is V6, the thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the thickness of the third lens on the optical axis is CT3, the thickness of the fourth lens on the optical axis is CT4, 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 axial distance between the sixth lens and the seventh lens is T67, which satisfy the following conditions: 4.9 < (V5 + V6) / V4 < 11; and 2.0 < (CT1 + CT2 + CT3 + CT4 + CT5 + CT6) / T67 < 3.

2.

20. The optical imaging system assembly according to claim 18, characterized in that, The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, the focal length of the optical imaging system group is f, and the focal length of the fifth lens is f5, which satisfy the following conditions: 1.1 < TL / f < 1.4; and 0.90 < f5 / f < 1.

4.

21. The optical imaging system assembly according to claim 18, characterized in that, The focal length of the seventh lens is f7, 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: -1.2 < f7 / R13 + f7 / R14 < 0.

22. The optical imaging system assembly according to claim 18, characterized in that, The focal length of the first lens is f1, and the focal length of the sixth lens is f6, which satisfy the following conditions: -13 <f6 / f1<-6.7。 23. The optical imaging system assembly according to claim 18, characterized in that, The second lens has a concave surface near the optical axis on its image-side surface; the fifth lens has a concave surface near the optical axis on its object-side surface, and a convex surface near the optical axis on its image-side surface.

24. The optical imaging system assembly according to claim 18, characterized in that, The object-side surface of the sixth lens is convex near the optical axis; the distance between at least one critical point of the object-side surface of the sixth lens and the optical axis is Yc61, and the maximum distance between the optically effective area of ​​the object-side surface of the sixth lens and the optical axis is Y61, which satisfies the following conditions: 0.30 <Yc61 / Y61<0.75。 25. The optical imaging system assembly according to claim 18, characterized in that, At least one surface of at least three of the lenses, from the first to the seventh, contains at least one inflection point.

26. An image capturing device, characterized in that, Include: The optical imaging system group as described in claim 18; and An electronic photosensitive element is disposed on an imaging surface of the optical imaging system assembly.

27. An electronic device, characterized in that, Include: The imaging device as described in claim 26.

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