Imaging system lens, image capturing device and electronic device

Abstract

The present disclosure provides an imaging system lens, an image capturing device and an electronic device. The imaging system lens includes six lenses. The six lenses are sequentially arranged 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 and a sixth lens. Each lens has an object side surface facing the object side and an image side surface facing the image side. The third lens has a negative refractive power. At least one surface of at least one lens among the first lens to the sixth lens includes at least one inflection point. When certain conditions are met, the volume distribution of the imaging system lens is balanced.

Description

Technical Field

[0001] This disclosure relates to an imaging system lens assembly and an image acquisition device, and more particularly to a miniaturized imaging system lens assembly and an image acquisition 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 imaging system lens assembly, image acquisition device, and electronic device disclosed herein, through the configuration of the refractive power of the third lens and the lens distribution, are beneficial for correcting spherical aberration and balancing the volume distribution of the imaging system lens assembly.

[0004] This disclosure provides an imaging system lens assembly comprising six 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, and a sixth 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 negative refractive power. The second lens has positive refractive power. The third lens has negative refractive power. The image-side surface of the sixth lens is concave near the optical axis. At least one surface of at least one of the first to sixth lenses includes at least one inflection point. The imaging system lens assembly comprises a total of six lenses. The distance between the second and third lenses on the optical axis is T23. The focal length of the imaging system lens group is f. The focal length of the first lens is f1, the focal length of the second lens is f2, the combined focal length of the first and second lenses is f12, the radius of curvature of the object-side surface of the sixth lens is R11, the radius of curvature of the image-side surface of the sixth lens is R12, and the maximum field of view of the imaging system lens group is FOV, which satisfies the following conditions: 0.45 < T23 / f < 3.50; -0.55 < (R11-R12) / (R11+R12) < 0.75; 30.0 degrees < FOV < 125.0 degrees; -1.22 < f2 / f1; and 0.16 < f / f12 < 0.67.

[0005] According to the present disclosure, there is provided an imaging system lens assembly comprising six lenses, the six lenses being, in order from the object side to the image side along the optical path, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. Each of the lenses has an object-side surface facing the object side and an image-side surface facing the image side. The second lens has positive refractive power. The third lens has negative refractive power. The image-side surface of the sixth lens is concave near the optical axis. The total number of lenses of the imaging system lens assembly is six. The separation distance between the second lens and the third lens on the optical axis is T23, the focal length of the imaging system lens assembly is f, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, the combined focal length of the first lens and the second lens is f12, the combined focal length of the third lens, the fourth lens, the fifth lens and the sixth lens is f3456, the curvature radius of the image-side surface of the third lens is R6, the curvature radius of the object-side surface of the fourth lens is R7, the curvature radius of the object-side surface of the sixth lens is R11, the curvature radius of the image-side surface of the sixth lens is R12, the maximum field of view of the imaging system lens assembly is FOV, which satisfies the following conditions: 0.45 < T23 / f< 3.50; -0.80 < (R11-R12) / (R11+R12) < 1.20; 30.0 degrees < FOV < 125.0 degrees; -25.0 <f5×f6 / (f×f) < 0.90; 0.55 < f / f3456 < 1.10; -0.75 < (R6-R7) / (R6+R7) < 1.50; and 0.16 < f / f12 < 0.67.

[0006] This disclosure provides an imaging system lens assembly comprising six 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, and a sixth 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 positive refractive power. The third lens has negative refractive power. The image-side surface of the sixth lens is concave near the optical axis. The imaging system lens assembly comprises a total of six lenses. The distance between the second and third lenses on the optical axis is T23. The focal length of the imaging system lens group is f. The focal length of the fifth lens is f5. The focal length of the sixth lens is f6. The combined focal length of the first and second lenses is f12. The radius of curvature of the image-side surface of the third lens is R6. The radius of curvature of the object-side surface of the fourth lens is R7. The radius of curvature of the object-side surface of the sixth lens is R11. The radius of curvature of the image-side surface of the sixth lens is R12. These conditions must satisfy the following: 0.78 < T23 / f < 3.30; -0.35 < (R11-R12) / (R11+R12) < 1.20; -25.0 < f5×f6 / (f×f) < 9.0; -0.47 <(R6-R7) / (R6+R7) < 1.90; R6 / R7 < 1.25; and 0.16 < f / f12 < 0.67.

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

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

[0009] This disclosure provides an imaging system lens assembly comprising six 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, and a sixth 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 negative refractive power. The second lens has positive refractive power. The third lens has negative refractive power. The image-side surface of the sixth lens is concave near the optical axis. The image-side surface of the sixth lens includes at least one inflection point. The imaging system lens assembly comprises a total of six lenses. The distance between the second and third lenses on the optical axis is T23. The focal length of the imaging system lens group is f. The combined focal length of the first and second lenses is f12. The radius of curvature of the object-side surface of the first lens is R1. The radius of curvature of the object-side surface of the second lens is R3. The radius of curvature of the image-side surface of the second lens is R4. These conditions satisfy the following conditions: 0.45 < T23 / f < 3.5; -0.10 < f / R1 < 1.0; 0 < (R3-R4) / (R3+R4); and 0.16 < f / f12 < 0.67.

[0010] When T23 / f meets the above conditions, the lens distribution can be adjusted, which helps to balance the volume distribution of the imaging system lens group.

[0011] When (R11-R12) / (R11+R12) satisfies the above conditions, the curvature radii of the object-side surface and image-side surface of the sixth lens in the imaging system lens group can be adjusted to correct the image curvature aberration of the imaging system lens group.

[0012] When the FOV meets the above conditions, the imaging system can have a wide field of view and avoid aberrations such as distortion caused by an excessively large field of view.

[0013] When f2 / f1 meets the above conditions, the refractive power of the first and second lenses in the imaging system lens group can be adjusted to correct aberrations.

[0014] When f / f12 meets the above conditions, the overall refractive power of the first and second lenses in the imaging system lens group can be adjusted to correct aberrations such as astigmatism.

[0015] When f5×f6 / (f×f) satisfies the above conditions, the overall refractive power of the fifth and sixth lenses can be adjusted, which helps to compress the volume and correct aberrations.

[0016] When f / f3456 meets the above conditions, the overall refractive power of the third to sixth lenses of the imaging system lens group can be adjusted, which helps to increase the quality of the central focusing light.

[0017] When (R6-R7) / (R6+R7) satisfies the above conditions, the radius of curvature of the adjacent dihedral surfaces in the lens group of the imaging system can be adjusted to correct the chromatic aberration of the imaging system lens group.

[0018] When R6 / R7 meets the above conditions, the curvature radius of the adjacent dihedral surfaces in the imaging system lens group can be adjusted, which helps to reduce the imaging chromatic aberration in the peripheral field of view.

[0019] When f / R1 meets the above conditions, the refractive power of the imaging system lens group and the surface shape of the first lens can be adjusted, which helps to improve the imaging effect.

[0020] When (R3-R4) / (R3+R4) satisfies the above conditions, the curvature radius of the object-side surface and the image-side surface of the second lens in the imaging system lens group can be adjusted to improve the light-gathering effect at the imaging center. Attached Figure Description

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

[0022] Figure 1B A schematic diagram illustrating the imaging device in conjunction with another reflective element according to the first embodiment of this disclosure;

[0023] Figure 2 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the first embodiment.

[0024] Figure 3A A schematic diagram illustrating an image-capturing device according to a second embodiment of the present disclosure is shown.

[0025] Figure 3B A schematic diagram illustrating the imaging device in conjunction with another reflective element according to the second embodiment of this disclosure;

[0026] Figure 4 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the second embodiment.

[0027] Figure 5A A schematic diagram illustrating an image-capturing device according to a third embodiment of the present disclosure is shown.

[0028] Figure 5B A schematic diagram illustrating the imaging device in conjunction with another reflective element according to the third embodiment of this disclosure;

[0029] Figure 6 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the third embodiment.

[0030] Figure 7A A schematic diagram illustrating an image-capturing device according to the fourth embodiment of this disclosure is shown;

[0031] Figure 7B A schematic diagram illustrating the imaging device in conjunction with another reflective element according to the fourth embodiment of this disclosure;

[0032] Figure 8 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fourth embodiment.

[0033] Figure 9A A schematic diagram illustrating an image-capturing device according to the fifth embodiment of this disclosure;

[0034] Figure 9B A schematic diagram illustrating the imaging device in conjunction with another reflective element according to the fifth embodiment of this disclosure;

[0035] Figure 10 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fifth embodiment.

[0036] Figure 11A A schematic diagram illustrating an image-capturing device according to the sixth embodiment of this disclosure is shown;

[0037] Figure 11B A schematic diagram illustrating the imaging device in conjunction with another reflective element according to the sixth embodiment of this disclosure;

[0038] Figure 12 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the sixth embodiment.

[0039] Figure 13A A schematic diagram illustrating an image-capturing device according to the seventh embodiment of this disclosure;

[0040] Figure 13B A schematic diagram illustrating the imaging device in conjunction with another reflective element according to the seventh embodiment of this disclosure;

[0041] Figure 14 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the seventh embodiment.

[0042] Figure 15A A schematic diagram illustrating an imaging device according to the eighth embodiment of this disclosure;

[0043] Figure 15B A schematic diagram illustrating the imaging device in conjunction with another reflective element according to the eighth embodiment of this disclosure;

[0044] Figure 16 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the eighth embodiment.

[0045] Figure 17A A schematic diagram illustrating an image-capturing device according to the ninth embodiment of this disclosure;

[0046] Figure 17B A schematic diagram illustrating the imaging device in conjunction with another reflective element according to the ninth embodiment of this disclosure;

[0047] Figure 18 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the ninth embodiment.

[0048] Figure 19A A schematic diagram illustrating an image-capturing device according to the tenth embodiment of this disclosure is shown;

[0049] Figure 19B A schematic diagram illustrating the imaging device in conjunction with another reflective element according to the tenth embodiment of this disclosure;

[0050] Figure 20 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the tenth embodiment;

[0051] Figure 21A A schematic diagram illustrating an image-capturing device according to the eleventh embodiment of this disclosure;

[0052] Figure 21B A schematic diagram illustrating the imaging device in conjunction with another reflective element according to the eleventh embodiment of this disclosure;

[0053] Figure 22 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the eleventh embodiment;

[0054] Figure 23A A schematic diagram illustrating an image-capturing device according to the twelfth embodiment of this disclosure;

[0055] Figure 23B A schematic diagram illustrating the imaging device in conjunction with another reflective element according to the twelfth embodiment of this disclosure;

[0056] Figure 24 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the twelfth embodiment;

[0057] Figure 25A A schematic diagram illustrating parameters in an imaging device according to the thirteenth embodiment of this disclosure;

[0058] Figure 25B Another schematic diagram illustrating parameters in an imaging device according to the thirteenth embodiment of this disclosure;

[0059] Figure 25C Another schematic diagram illustrating parameters in an imaging device according to the thirteenth embodiment of this disclosure;

[0060] Figure 25DA schematic diagram illustrating the first lens receiving mechanism and the second lens receiving mechanism in the imaging device according to the thirteenth embodiment of this disclosure;

[0061] Figure 25E A schematic diagram of the first lens receiving mechanism and the second lens receiving mechanism in the imaging device according to the thirteenth embodiment of this disclosure is shown from another perspective;

[0062] Figure 25F A schematic diagram of the second lens receiving mechanism in the imaging device according to the thirteenth embodiment of this disclosure is shown;

[0063] Figure 25G A schematic diagram of the first lens receiving mechanism in the imaging device according to the thirteenth embodiment of this disclosure is shown;

[0064] Figure 25H A schematic diagram of a light-shielding element in an imaging device according to the thirteenth embodiment of this disclosure is shown;

[0065] Figure 25I A schematic diagram of the third lens in the imaging device according to the thirteenth embodiment of this disclosure is shown;

[0066] Figure 25J A schematic diagram of a light-shielding plate in an imaging device according to the thirteenth embodiment of this disclosure is shown;

[0067] Figure 26A A schematic diagram illustrating parameters in an imaging device according to the fourteenth embodiment of this disclosure;

[0068] Figure 26B Another schematic diagram illustrating parameters in an imaging device according to the fourteenth embodiment of this disclosure;

[0069] Figure 26C Another schematic diagram illustrating parameters in an imaging device according to the fourteenth embodiment of this disclosure;

[0070] Figure 26D A schematic diagram of the first lens receiving mechanism and the second lens receiving mechanism in the imaging device according to the fourteenth embodiment of this disclosure is shown;

[0071] Figure 26E A schematic diagram of the first lens receiving mechanism and the second lens receiving mechanism in the imaging device according to the fourteenth embodiment of this disclosure is shown from another perspective;

[0072] Figure 26F A schematic diagram of the second lens receiving mechanism in the imaging device according to the fourteenth embodiment of this disclosure is shown;

[0073] Figure 26G A schematic diagram of the first lens receiving mechanism in the imaging device according to the fourteenth embodiment of this disclosure is shown;

[0074] Figure 26H A schematic diagram of a light-shielding element in an imaging device according to the fourteenth embodiment of this disclosure is shown;

[0075] Figure 26I A schematic diagram of a light-shielding plate in an imaging device according to the fourteenth embodiment of this disclosure is shown;

[0076] Figure 26J A schematic diagram of the sixth lens in the imaging device according to the fourteenth embodiment of this disclosure is shown;

[0077] Figure 27A Drawing according to Figure 1A A schematic diagram of some parameters, inflection points of each lens, and critical points in the first embodiment;

[0078] Figure 27B Drawing according to Figure 1B A schematic diagram of some parameters, inflection points of each lens, and critical points in the first embodiment;

[0079] Figure 28 A schematic diagram illustrating some parameters according to the first embodiment is shown;

[0080] Figure 29A Drawing according to Figure 1A A schematic diagram of the imaging system lens group and lens tube in the first embodiment;

[0081] Figure 29B Drawing according to Figure 1B A schematic diagram of the imaging system lens group and lens tube in the first embodiment;

[0082] Figure 30 A perspective view of an image-capturing device according to the fifteenth embodiment of this disclosure is shown;

[0083] Figure 31A A schematic diagram showing one side of an electronic device according to the sixteenth embodiment of this disclosure;

[0084] Figure 31B Drawing according to Figure 31A A schematic diagram of the other side of the electronic device;

[0085] Figure 31C Drawing according to Figure 31A A schematic diagram of the electronic device in the middle;

[0086] Figure 32 A schematic diagram showing one side of an electronic device according to the seventeenth embodiment of this disclosure;

[0087] Figure 33 A schematic diagram illustrating one side of an electronic device according to the eighteenth embodiment of this disclosure;

[0088] Figure 34A A schematic diagram showing one side of an electronic device according to the nineteenth embodiment of this disclosure;

[0089] Figure 34B Drawing according to Figure 34A A schematic diagram of the other side of the electronic device;

[0090] Figure 35A A schematic diagram illustrating an arrangement of optical path deflection elements in an imaging system lens assembly in accordance with this disclosure;

[0091] Figure 35B A schematic diagram illustrating another configuration of the optical path reversing element in the lens assembly of an imaging system according to this disclosure; and

[0092] Figure 35C A schematic diagram illustrating one configuration of the two optical path reversing elements in an imaging system lens assembly according to this disclosure is shown.

[0093] [Symbol Explanation]

[0094] 200, 300, 400, 500: Electronic devices

[0095] 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 100, 110, 120, 130, 140, 310, 320, 330, 410, 420, 430, 440, 450, 460, 470, 480, 490, 510, 520, 530, 540: Image capturing device

[0096] 101: Imaging Lens

[0097] 102: Drive unit assembly

[0098] 103: Electronic photosensitive element

[0099] 104: Image Stabilization Module

[0100] 201, 301, 401: Flash module

[0101] 202: Focusing Assist Module

[0102] 203: Image Signal Processor

[0103] 204, 504: User Interface

[0104] 205: Image Software Processor

[0105] 206: Subject

[0106] ST: Aperture

[0107] S1, S2: Aperture

[0108] E1: First lens

[0109] E2: Second lens

[0110] E3: Third Lens

[0111] E4: Fourth Lens

[0112] E5: Fifth Lens

[0113] E6: Sixth Lens

[0114] E7: Filter element

[0115] E8: Reflective element

[0116] IMG: Imaging Surface

[0117] IS: Electronic photosensitive element

[0118] IP: Recurve Point

[0119] CP: Critical Point

[0120] G1, G2: Lens tube

[0121] X: Optical axis

[0122] OA1, X1: First optical axis

[0123] OA2, X2: Second optical axis

[0124] OA3: Third optical axis

[0125] LF, LF1, LF2: Optical path switching elements

[0126] LG: Lens Group

[0127] CM1: First lens housing mechanism

[0128] CM2: Second lens housing mechanism

[0129] B1, B2, B3, B4: Light-blocking sheets

[0130] C1: Light-blocking part

[0131] C2: Light-transmitting part

[0132] AS: Support surface

[0133] CM1L: Maximum length of the first lens housing mechanism along the first optical axis

[0134] CM2L: Maximum length of the second lens housing mechanism along the second optical axis

[0135] CM1O: Maximum outer diameter of the first lens housing mechanism CM1

[0136] PC: Prism housing space

[0137] LC: Lens housing space

[0138] PCL: The maximum length of the prism housing space along the second optical axis

[0139] LCL: Maximum length of the lens accommodating space along the second optical axis

[0140] OP: Open

[0141] f: Focal length of the imaging system lens group

[0142] Fno: Aperture value of the imaging system lens group

[0143] HFOV: Half of the maximum field of view in the imaging system's lens group.

[0144] FOV: The maximum field of view of the imaging system's lens group.

[0145] f1: Focal length of the first lens

[0146] f2: Focal length of the second lens

[0147] f5: Focal length of the fifth lens

[0148] f6: Focal length of the sixth lens

[0149] f12: Combined focal length of the first and second lenses

[0150] f3456: The combined focal length of the third, fourth, fifth, and sixth lenses.

[0151] f56: Combined focal length of the fifth and sixth lenses

[0152] N3: Refractive index of the third lens

[0153] N6: Refractive index of the sixth lens

[0154] V3: Abbe number of the third lens

[0155] V4: Abbe number of the fourth lens

[0156] V5: Abbe number of the fifth lens

[0157] V6: Abbe number of the sixth lens

[0158] CT1: Thickness of the first lens on the optical axis

[0159] CT2: Thickness of the second lens on the optical axis

[0160] T12: The distance between the first lens and the second lens on the optical axis

[0161] T23: The distance between the second and third lenses on the optical axis

[0162] T34: The distance between the third and fourth lenses on the optical axis

[0163] T45: The distance between the fourth and fifth lenses on the optical axis

[0164] T56: The distance between the fifth and sixth lenses on the optical axis

[0165] ΣAT: The sum of the distances between two adjacent lenses on the optical axis in an imaging system lens group.

[0166] ATmax: The largest of T12, T23, T34, T45, and T56

[0167] ImgH: Maximum image height of the imaging system lens group

[0168] R1: Radius of curvature of the object-side surface of the first lens

[0169] R3: Radius of curvature of the object-side surface of the second lens

[0170] R4: Radius of curvature of the image-side surface of the second lens

[0171] R6: Radius of curvature of the image-side surface of the third lens

[0172] R7: Radius of curvature of the object-side surface of the fourth lens

[0173] R11: Radius of curvature of the object-side surface of the sixth lens

[0174] R12: Radius of curvature of the image-side surface of the sixth lens

[0175] Y11: The maximum distance between the optically effective area of ​​the object-side surface of the first lens and the optical axis.

[0176] Y22: The maximum distance between the optically effective area of ​​the image-side surface of the second lens and the optical axis.

[0177] Y62: The maximum distance between the optically effective area of ​​the image-side surface of the sixth lens and the optical axis.

[0178] TL: Distance along the optical axis from the object-side surface of the first lens to the imaging plane.

[0179] SL: Distance from the aperture to the imaging plane along the optical axis

[0180] EPD: Entrance pupil diameter of the imaging system's lens group

[0181] SDB1: Radius of the circumcircle covering the opening.

[0182] SDB2: Radius of the inscribed circle not covering the first lens housing mechanism

[0183] Y1R1: Maximum effective diameter of the object-side surface of the first lens

[0184] RBH: Height of the second lens housing mechanism along the first optical axis

[0185] THP1: Length of the first optical axis within the prism

[0186] THP2: Length of the second optical axis within the prism

[0187] DH: The minimum height difference between the object-side opening surface of the imaging system lens assembly and the second lens housing mechanism along the first optical axis.

[0188] PG1: The distance parallel to the first optical axis from the object-side surface of the prism to the maximum effective diameter of the adjacent lens surface.

[0189] PG2: The distance parallel to the second optical axis from the mirror-side surface of the prism to the maximum effective diameter of the adjacent lens surface.

[0190] PD1: The shortest distance along the second optical axis from the intersection of the prism object-side surface and the first optical axis to the second lens housing mechanism.

[0191] PD2: The shortest distance along the first optical axis from the intersection of the prism's mirror-side surface and the second optical axis to the second lens housing mechanism.

[0192] TD1: The distance on the optical axis from the object-side lens surface to the image-side lens surface of the first lens group.

[0193] TD2: The distance on the optical axis from the object-side lens surface to the image-side lens surface of the second lens group.

[0194] D: Length of the bearing surface along the first optical axis

[0195] D1: Radius of the circumcircle of the maximum aperture of the light-transmitting portion of the light-blocking element.

[0196] D2: The radius of the inscribed circle of the largest aperture in the light-shielding element that does not cover the light-shielding portion. Detailed Implementation

[0197] This disclosure provides an imaging system lens assembly comprising six 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, and a sixth lens. Each lens has an object-side surface facing the object side and an image-side surface facing the image side. Any two adjacent lenses may have an air gap along the optical axis to prevent contact between adjacent lenses, thereby reducing the difficulty of lens manufacturing and assembly.

[0198] The first lens can be crescent-shaped, which helps to compress the volume of the object-side end of the imaging system's lens assembly. In detail, crescent-shaped means that one of the object-side and image-side surfaces of the lens is concave near the optical axis, while the other is convex near the optical axis.

[0199] The second lens may have positive refractive power, which 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 convex, which allows adjustment of the surface shape and refractive power of the second lens to correct aberrations.

[0200] The third lens has negative refractive power and can work in conjunction with the fourth lens to correct aberrations such as spherical aberration. The image-side surface of the third lens near the optical axis can be concave, allowing adjustment of the lens's shape and refractive power to mitigate chromatic aberration in the peripheral field of view.

[0201] The object-side surface of the fourth lens near the optical axis may be convex, allowing adjustment of the lens's shape and refractive power to correct aberrations. The off-axis portion of the object-side surface of the fourth lens may include at least one convex surface, which allows adjustment of the lens's shape and helps reduce the height of the effective diameter of the imaging system's lens group. The off-axis portion of the image-side surface of the fourth lens may also include at least one convex surface, which allows adjustment of the lens's shape and helps correct off-axis aberrations such as image curvature.

[0202] The fifth lens may have positive refractive power, which can be adjusted with adjacent lenses to achieve a balance between the overall length of the imaging system and image quality. Both the object-side and image-side surfaces of the fifth lens may be aspherical, allowing the lens surface to have different curvatures with height, thereby reducing imaging coma in different fields of view. At least one of the object-side and image-side surfaces of the fifth lens may contain at least one inflection point, which helps to obtain a larger imaging surface size within a limited volume.

[0203] The sixth lens may have negative refractive power, which can reduce spherical aberration in the central field of view. The object-side surface of the sixth lens may be convex near the optical axis, which can adjust the direction of light travel and help increase the image plane. The image-side surface of the sixth lens may be concave near the optical axis, which helps reduce the back focal length. Additionally, the image-side surface of the sixth lens may include at least one inflection point, which helps increase the image plane size and reduce image curvature. The image-side surface of the sixth lens may include at least one critical point, which can help correct image curvature.

[0204] The refractive power of the fifth lens and the sixth lens can have different positive and negative values. In this way, aberrations such as spherical aberration can be corrected by the interaction of the fifth and sixth lenses.

[0205] At least one surface of at least one of the first to sixth lenses may include at least one inflection point. This can enhance the degree of surface variation of the lens, helping to correct aberrations and reduce lens volume. Alternatively, at least one surface of at least two of the first to sixth lenses may each include at least one inflection point. Furthermore, at least one surface of at least three of the first to sixth lenses may each include at least one inflection point.

[0206] The imaging system lens assembly may further include a reflecting element disposed between the first lens and the sixth lens, which can deflect the optical axis to reduce the size of the imaging system lens assembly. Additionally, the reflecting element may be disposed between the second lens and the third lens. Specifically, the reflecting element may be a prism, a mirror, etc., wherein the prism may be made of glass, plastic, etc., but this disclosure is not limited thereto. More specifically, the incident surface of the prism may be a plane or a curved surface; the exit surface of the prism may be a plane or a curved surface.

[0207] The first and second lenses can form a front lens group, and the third, fourth, fifth, and sixth lenses can form a rear lens group, which can move relative to the front lens group. By using the rear lens group as a moving lens in the autofocus system, a more ideal focus position can be achieved when shooting at different object distances, thereby increasing image quality. Furthermore, the first lens can move relative to the sixth lens. This can be applied to shooting objects at different object distances, increasing the detail resolution of the subject. It must be noted that the movement of the rear lens group can be parallel to the optical axis, perpendicular to the optical axis, or rotation, but this disclosure is not limited to these methods.

[0208] The distance between the second and third lenses on the optical axis is T23, and the focal length of the imaging system lens group is f, satisfying the following condition: 0.45 < T23 / f < 3.50. This allows for adjustment of the lens distribution, helping to balance the volume distribution of the imaging system lens group. Additionally, the following condition can be satisfied: 0.78 < T23 / f < 3.30. Furthermore, the following condition can be satisfied: 0.85 < T23 / f < 2.0.

[0209] 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, satisfying the following condition: -0.80 < (R11-R12) / (R11+R12) < 1.20. This allows adjustment of the radii of curvature of the object-side and image-side surfaces of the sixth lens in the imaging system's lens group to correct image curvature aberration. Additionally, the following condition can be satisfied: -0.55 < (R11-R12) / (R11+R12) < 0.75. Furthermore, the following condition can be satisfied: -0.35 < (R11-R12) / (R11+R12) < 1.20. Moreover, the following condition can be satisfied: -0.35 < (R11-R12) / (R11+R12) < 0.55.

[0210] The maximum field of view (FOV) of the imaging system lens assembly satisfies the following condition: 30.0 degrees < FOV < 125.0 degrees. This allows the imaging system assembly to possess a wide field of view and avoids aberrations such as distortion caused by excessively large field of view. Additionally, the following condition must be met: 40.0 degrees < FOV < 95.0 degrees.

[0211] The first lens has a focal length of f1, and the second lens has a focal length of f2, satisfying the following condition: -1.22 < f2 / f1. This allows adjustment of the refractive power of the first and second lenses in the imaging system to correct aberrations. Additionally, the following condition must be satisfied: -1.22 < f2 / f1 < 1.0. Furthermore, the following condition must be satisfied: -1.20 < f2 / f1 < 0. Additionally, the following condition must be satisfied: -1.20 < f2 / f1 < -0.50.

[0212] The focal length of the imaging system's lens group is f, and the combined focal length of the first and second lenses is f12, which satisfies the following condition: 0.16 < f / f12 < 0.67. This allows adjustment of the overall refractive power of the first and second lenses in the imaging system's lens group to correct aberrations such as astigmatism.

[0213] The focal length of the imaging system's lens group is f, the focal length of the fifth lens is f5, and the focal length of the sixth lens is f6, satisfying the following condition: f5×f6 / (f×f) < 0.90. This allows adjustment of the overall refractive power of the fifth and sixth lenses, which helps to reduce volume and correct aberrations. Additionally, the following condition is satisfied: -50.0 < f5×f6 / (f×f) < 0.50. Furthermore, the following condition is satisfied: -25.0 < f5×f6 / (f×f) < 0.10.

[0214] The focal length of the imaging system's lens group is f, and the combined focal length of the third, fourth, fifth, and sixth lenses is f3456, satisfying the following condition: 0.55 < f / f3456 < 1.10. This allows adjustment of the overall refractive power of the third to sixth lenses in the imaging system, contributing to improved central light-gathering quality. Additionally, the following conditions are also satisfied: 0.50 < f / f3456 < 1.10. Furthermore, the following conditions are also satisfied: 0.50 < f / f3456 < 0.95. Furthermore, the following conditions are also satisfied: 0.55 < f / f3456 < 0.95. Furthermore, the following conditions are also satisfied: 0.60 < f / f3456 < 0.90.

[0215] The radius of curvature of the image-side surface of the third lens is R6, and the radius of curvature of the object-side surface of the fourth lens is R7, satisfying the following condition: -0.75 < (R6-R7) / (R6+R7) < 1.50. This allows adjustment of the radii of curvature of adjacent surfaces in the imaging system's lens group to correct chromatic aberration. Additionally, the following condition can be satisfied: -0.65 < (R6-R7) / (R6+R7) < 0.50. Furthermore, the following condition can be satisfied: -0.47 < (R6-R7) / (R6+R7) < 1.90.

[0216] The radius of curvature of the image-side surface of the third lens is R6, and the radius of curvature of the object-side surface of the fourth lens is R7, satisfying the following condition: R6 / R7 < 1.25. This allows adjustment of the radii of curvature of adjacent dihedral surfaces in the imaging system, helping to reduce chromatic aberration in the peripheral field of view. Additionally, the following condition can be satisfied: -2.0 < R6 / R7 < 1.25. Furthermore, the following condition can be satisfied: 0 < R6 / R7 < 1.25. Additionally, the following condition can be satisfied: 0.40 < R6 / R7 < 1.20.

[0217] The focal length of the imaging system's lens group is f, and the radius of curvature of the object-side surface of the first lens is R1, satisfying the following condition: -0.90 < f / R1 < 5.0. This allows adjustment of the refractive power of the imaging system's lens group and the surface shape of the first lens, contributing to improved imaging performance. Additionally, the following condition can be satisfied: -0.30 < f / R1 < 3.0. Furthermore, the following condition can be satisfied: -0.10 < f / R1 < 1.0.

[0218] The radius of curvature of the object-side surface of the second lens is R3, and the radius of curvature of the image-side surface of the second lens is R4, satisfying the following condition: 0 < (R3-R4) / (R3+R4). This allows adjustment of the radii of curvature of the object-side and image-side surfaces of the second lens in the imaging system's lens assembly, thereby improving the light-gathering effect at the imaging center. Additionally, the following condition must be satisfied: 0.30 < (R3-R4) / (R3+R4) < 2.50.

[0219] The refractive index of the third lens is N3, and the refractive index of the sixth lens is N6, satisfying the condition: 1.60 < (N3+N6) / 2. This allows the lens materials to be matched to achieve a greater image height within a limited space. Additionally, the condition: 1.65 < (N3+N6) / 2 < 1.75 is also satisfied.

[0220] The distance between the third and fourth lenses on the optical axis is T34, and the distance between the fifth and sixth lenses on the optical axis is T56. The sum of the distances between any two adjacent lenses in the imaging system assembly on the optical axis is ΣAT, which satisfies the following condition: 0 < (T34+T56) / ΣAT < 0.09. This allows for adjustment of the spacing between the lenses in the imaging system assembly, thereby reducing the volume of the imaging system assembly.

[0221] The focal length of the imaging system's lens group is f, and the combined focal length of the fifth and sixth lenses is f56, satisfying the following condition: 0.75 < f56 / f < 5.00. This allows adjustment of the overall refractive power of the fifth and sixth lenses, aiding in field curvature correction. Additionally, the following condition is also satisfied: 1.0 < f56 / f < 2.50.

[0222] The focal length of the imaging system's lens assembly is f. The thickness of the first lens along the optical axis is CT1, the thickness of the second lens along the optical axis is CT2, and the distance between the first and second lenses along the optical axis is T12. This satisfies the following condition: 0.30 < (CT1 + T12 + CT2) / f < 0.85. This allows for adjustment of the lens distribution at the object-side end of the imaging system's lens assembly to compress the object-side volume.

[0223] The distance between the second and third lenses on the optical axis is T23, and the maximum image height of the imaging system lens group is ImgH, which satisfies the following condition: 1.00 < T23 / ImgH < 2.00. This allows for adjustment of the lens distribution to facilitate the placement of other optical elements between the lenses. Additionally, the following condition can be satisfied: 1.20 < T23 / ImgH < 1.80.

[0224] The Abbe number of the third lens is V3, 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, satisfying the following condition: 2.50 < (V4+V5) / (V3+V6) < 4.00. This allows the lens materials to be matched to correct aberrations such as chromatic aberration.

[0225] The second lens has a focal length of f2, and the combined focal length of the fifth and sixth lenses is f56, satisfying the following condition: 0.25 < f2 / f56 < 2.20. This allows adjustment of the surface shape of the second lens and the overall refractive power of the fifth and sixth lenses, helping to change the light-gathering position and reduce the lens size.

[0226] The sixth lens has a focal length of f6, a radius of curvature of R11 on its object-side surface, and a radius of curvature of R12 on its image-side surface, satisfying the following condition: -12.00 < f6 / R11 + f6 / R12 < -6.00. This allows adjustment of the surface shape and refractive power of the sixth lens, contributing to its shape retention and increasing the image size.

[0227] The combined focal length of the first and second lenses is f12, and the radius of curvature of the image-side surface of the second lens is R4, satisfying the following condition: -7.50 < f12 / R4 < -1.00. This allows adjustment of the surface shape of the second lens and the overall refractive power from the first to the second lens, helping to improve the screen-to-body ratio of electronic devices.

[0228] The second lens has a focal length of f2 and a radius of curvature of R4 on its image-side surface, satisfying the condition: -3.50 < f2 / R4 < -0.80. This allows for adjustment of the surface shape and refractive power of the second lens, which helps to reduce volume and correct aberrations.

[0229] The distance from the object-side surface of the first lens to the imaging plane along the optical axis is TL, and the entrance pupil diameter of the imaging system's lens group is EPD, which satisfies the following condition: 6.00 < TL / EPD < 10.00. This achieves a balance between the total length and the aperture size.

[0230] The distance from the object-side surface of the first lens to the imaging plane on the optical axis is TL, and the maximum image height of the imaging system lens group is ImgH, which satisfies the following condition: 3.00 < TL / ImgH < 5.00. This achieves a balance between compressing the total length and increasing the imaging plane, and also helps to increase the viewing angle.

[0231] 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 sixth lens and the optical axis is Y62, satisfying the following condition: 2.00 < Y62 / Y11 < 3.50. This allows adjustment of the effective diameter range of the first and sixth lenses in the imaging system lens assembly, ensuring a smaller aperture in the imaging system lens assembly, which is beneficial for the appearance design of electronic devices. Additionally, the following condition can be satisfied: 2.00 < Y62 / Y11 < 4.0.

[0232] The focal length of the imaging system's lens assembly is f. The thickness of the first lens along the optical axis is CT1, and the thickness of the second lens along the optical axis is CT2, satisfying the following condition: 2.30 < f / (CT1+CT2) < 5.20. This allows for adjustment of the lens thickness within the imaging system's lens assembly, facilitating the miniaturization of electronic devices. Additionally, the following condition can be satisfied: 1.50 < f / (CT1+CT2) < 5.20.

[0233] The focal length of the imaging system's lens group is f. The distance between the third and fourth lenses on the optical axis is T34, and the distance between the fifth and sixth lenses on the optical axis is T56. These distances satisfy the following condition: 0.01 < (T34 + T56) / f < 0.15. This allows for adjustment of the lens distribution, which helps to balance the volume distribution of the imaging system's lens group.

[0234] The maximum distance between the effective optical area of ​​the image-side surface of the second lens and the optical axis is Y22, and the maximum distance between the effective optical area of ​​the image-side surface of the sixth lens and the optical axis is Y62, satisfying the following condition: 2.00 < Y62 / Y22 < 3.50. This allows adjustment of the effective diameter range of the second and sixth lenses in the imaging system assembly, thereby compressing the volume of the imaging system assembly and making the electronic device thinner. Additionally, the following condition can be satisfied: 1.70 < Y62 / Y22 < 3.50.

[0235] The separation distance between the first lens E1 and the second lens E2 on the optical axis is T12, the separation distance between the second lens E2 and the third lens E3 on the optical axis is T23, the separation distance between the third lens E3 and the fourth lens E4 on the optical axis is T34, the separation distance between the fourth lens E4 and the fifth lens E5 on the optical axis is T45, and the separation distance between the fifth lens E5 and the sixth lens E6 on the optical axis is T56. The maximum value among T12, T23, T34, T45, and T56 is ATmax, the focal length of the lens assembly of the imaging system is f, and it satisfies the following condition: 0.85 < ATmax / f < 5.0. Thereby, other optical components can be placed in the lens assembly of the imaging system, which facilitates mechanism configuration and increases the flexibility of product use. In addition, the following condition can be satisfied: 0.85 < ATmax / f < 1.90; or 1.0 < ATmax / f < 3.0. Furthermore, the following condition can be satisfied: 0.95 < ATmax / f < 1.70.

[0236] The lens assembly of the imaging system may further comprise an aperture. The distance from the aperture to the imaging surface on the optical axis is SL, and the distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, which satisfies the following condition: 0.90 ≤ SL / TL < 1.50. Thereby, the proportional relationship between the aperture position and the total length of the lens assembly of the imaging system can be adjusted, which helps reduce the size of the opening of the lens assembly of the imaging system and maintain the imaging size. In addition, the following condition can be satisfied: 1.0 ≤ SL / TL < 1.20. Furthermore, the following condition can be satisfied: 0.93 ≤ SL / TL < 1.30.

[0237] The focal length of the lens assembly of the imaging system is f, the curvature radius of the object-side surface of the fourth lens is R7, which satisfies the following condition: 0.0 < f / R7 < 5.0. Thereby, the refractive power of the lens assembly of the imaging system and the surface shape of the fourth lens can be adjusted, which helps reduce the spherical aberration of the central field of view. In addition, the following condition can be satisfied: 0.25 < f / R7 < 3.5. Furthermore, the following condition can be satisfied: 0.50 < f / R7 < 3.5.

[0238] In terms of mechanism, the lens assembly of the imaging system sequentially comprises, from the object side to the image side along the optical path, a first lens accommodating mechanism and a second lens accommodating mechanism. The first lens accommodating mechanism comprises a first lens group, the first lens group comprises at least one lens, the lens has an object-side surface facing the object side and an image-side surface facing the image side. The second lens accommodating mechanism comprises a prism and a second lens group, the second lens group comprises at least one lens, both the prism and the lens have an object-side surface facing the object side and an image-side surface facing the image side. An optical axis of the first lens group is a first optical axis, and an optical axis of the second lens group is a second optical axis.

[0239] The imaging system lens assembly may further include a light-shielding element, which comprises a light-shielding portion and a light-transmitting portion. The light-shielding portion is the part of the light-shielding element that prevents light from passing through, while the light-transmitting portion is the part of the light-shielding element that allows light to pass through. The light-transmitting portion may be defined by an circumcircle and an incircle. The circumcircle is the maximum aperture of the light-transmitting portion, and the radius of the circumcircle of the maximum aperture of the light-transmitting portion of the light-shielding element is D1. The incircle is the maximum aperture of the light-shielding portion that is not covered, and the radius of the incircle of the maximum aperture of the light-shielding portion that is not covered is D2. These conditions satisfy the following: 0.5 < D2 / D1 < 1.0, where D1 is not equal to D2. This allows adjustment of the geometry of the light-shielding element to facilitate integration with other components of the electronic device, increasing the efficiency of internal space utilization. Additionally, the following condition may also be satisfied: 0.5 < D2 / D1 < 0.8. It must be noted that the light-shielding element is a component with a light-shielding function, which may be a light-shielding sheet, a spacer ring, or a lens with a surface coating, but the content disclosed herein is not limited to these.

[0240] The shortest distance from the intersection of the prism's object-side surface and the first optical axis to the second lens housing mechanism along the second optical axis is PD1. The maximum image height of the imaging system's lens group is ImgH, satisfying the following condition: 0.20 < PD1 / ImgH < 0.60. This allows adjustment of the prism's geometry, helping to increase the size of the prism's support area and improve product assembly stability. Additionally, the following condition can be satisfied: 0.30 < PD1 / ImgH < 0.50.

[0241] The distance on the optical axis from the object-side lens surface to the image-side lens surface of the first lens group is TD1, and the distance on the optical axis from the object-side lens surface to the image-side lens surface of the second lens group is TD2. The lengths of the first optical axis in the prism are THP1 and THP2, respectively, satisfying the following condition: 0.85 < (TD1+TD2) / (THP1+THP2) < 1.50. This allows adjustment of the ratio of the sum of the object-side to image-side distances of the first and second lens groups to the sum of the lengths of the first and second optical axes in the prism, helping to reduce the total length and assembly difficulty. Additionally, the following condition can be satisfied: 0.95 < (TD1+TD2) / (THP1+THP2) < 1.40.

[0242] The lens on the object side of the first lens group is the first lens. The maximum effective diameter of the object-side surface of the first lens is Y1R1, and the maximum image height of the imaging system lens group is ImgH, which satisfies the following condition: 0.10 < Y1R1 / ImgH < 0.60. This allows adjustment of the ratio of the effective radius of the object-side surface of the first lens to the image height, helping to compress the effective diameter of the first lens to reduce the volume of the first lens housing mechanism and increase the flexibility of configuring the imaging system lens group. Additionally, the following condition can be satisfied: 0.20 < Y1R1 / ImgH < 0.55.

[0243] The height of the second lens housing mechanism along the first optical axis is RBH, and the maximum image height of the imaging system lens assembly is ImgH, satisfying the following condition: 1.40 < RBH / ImgH < 2.20. This allows adjustment of the lens housing space height along the first optical axis, increasing the flexibility of the imaging system lens assembly configuration and reducing interference with other electronic components. Additionally, the following condition is also satisfied: 1.50 < RBH / ImgH < 2.10.

[0244] The length of the first optical axis in the prism is THP1, the length of the second optical axis in the prism is THP2, and the maximum image height of the imaging system lens group is ImgH, which satisfies the following condition: 0.80 < (THP1+THP2) / ImgH < 1.30. This allows adjustment of the ratio of the sum of the distances from the object side to the image side of the first lens group and the object side to the image side of the second lens group to the image height, which helps in distributing the lenses and reducing the overall system volume. Additionally, the following condition can be satisfied: 0.85 < (THP1+THP2) / ImgH < 1.25. Furthermore, the following condition can be satisfied: 0.90 < (THP1+THP2) / ImgH < 1.15.

[0245] At least one surface of the lens has a primary wavelength structure. Specifically, the primary wavelength structure is a fine structure on the surface of an object, where the gaps between these fine structures are smaller than the wavelength of light, and their shape can be columnar or conical, but is not limited to these forms. This helps to reduce light reflection at the lens surface.

[0246] The second lens accommodating mechanism can be divided into a prism accommodating space and a lens accommodating space. The minimum height difference between the opening surface on the most object side of the imaging system lens group and the second lens accommodating mechanism along the first optical axis is DH, which satisfies the following condition: 0.50 mm < DH < 0.95 mm. Thereby, the height difference between the opening and the second lens accommodating portion can be adjusted, which is beneficial for utilizing the mechanism space to place the screen panel and increasing the thinning and lightening of the device. In addition, the following condition can be satisfied: 0.60 mm < DH < 0.90 mm. Furthermore, the following condition can be satisfied: 0.60 mm < DH < 0.85 mm.

[0247] The distance parallel to the second optical axis from the image-side surface of the prism to the maximum effective diameter of the adjacent lens surface is PG2, which satisfies the following condition: 0.15 mm < PG2 < 0.55 mm. Thereby, the horizontal distance from the object-side surface of the prism to the object-side surface of the lens closest to the prism in the second lens group in the outermost effective optical path can be adjusted, so that a balance can be achieved between volume reduction and improvement of assembly stability. In addition, the following condition can be satisfied: 0.20 mm < PG2 < 0.50 mm. Furthermore, the following condition can be satisfied: 0.20 mm < PG2 < 0.45 mm.

[0248] The light passing portion is provided with a plurality of protrusions, and the number of the protrusions is between 5 and 50. Thereby, the light shielding portion of the light shielding element can have geometric variation, which is beneficial for shielding stray light in the imaging system lens group and reducing reflection of stray light on the image plane. In addition, the number of protrusions can be between 20 and 180. Furthermore, the number of protrusions can be between 10 and 45 or between 30 and 150.

[0249] An opening on the most object side in the imaging system lens group defines a circumscribed circle, the circumscribed circle is the smallest circle covering the opening, the radius of the circumscribed circle covering the opening is SDB1, the maximum image height of the imaging system lens group is ImgH, which satisfies the following condition: 0.50 < SDB1 / ImgH < 1.00. Thereby, the ratio of the radius of curvature of the maximum aperture of the opening to the image height can be adjusted, which is beneficial for increasing the screen proportion of the screen. In addition, the following condition can be satisfied: 0.65 < SDB1 / ImgH < 1.00.

[0250] The opening on the object side of the imaging system lens assembly can be further defined by an inscribed circle. The circumscribed circle is the smallest circle encompassing the opening, with a radius of SDB1. The inscribed circle is the largest circle not encompassing the first lens housing mechanism, with a radius of SDB2. These inscribed circles satisfy the following condition: 0.50 < SDB2 / SDB1 < 1.00. This allows adjustment of the ratio of the radius of curvature of the maximum aperture to the maximum aperture of the opening not encompassing the first lens housing mechanism, contributing to an increase in screen-to-body ratio. Additionally, the following condition can be satisfied: 0.40 < SDB2 / SDB1 < 0.90. Furthermore, the following condition can be satisfied: 0.45 < SDB2 / SDB1 < 0.80.

[0251] The lens includes at least one lens with a non-circular effective diameter, which allows for flexible adjustment of the lens geometry and helps to increase compatibility with the mechanism and make electronic devices thinner and lighter.

[0252] The shortest distance from the intersection of the mirror-side surface of the prism and the second optical axis along the first optical axis to the second lens housing mechanism is PD2. The maximum image height of the imaging system lens group is ImgH, which satisfies the following condition: 0.35 < PD2 / ImgH < 0.65. This allows adjustment of the prism's geometry, helping to reduce the mechanism's size and overall volume. Additionally, the following condition can be satisfied: 0.45 < PD2 / ImgH < 0.55.

[0253] The distance parallel to the first optical axis from the object-side surface of the prism to the maximum effective diameter of the adjacent lens surface is PG1, which satisfies the following condition: 0.20 mm < PG1 < 0.75 mm. This allows adjustment of the horizontal distance from the image-side surface of the lens closest to the prism in the first lens group to the object-side surface of the prism, helping to reduce volume and avoid interference problems during lens and mechanism assembly. Additionally, the following condition must be satisfied: 0.25 mm < PG1 < 0.70 mm.

[0254] A bearing surface parallel to the first optical axis is provided between the prism and the second lens housing mechanism. The length of the bearing surface along the first optical axis is D, which satisfies the following condition: 0.10 mm < D < 0.70 mm. This facilitates prism support, increases the stability of the imaging system lens assembly, reduces the size of the imaging system lens assembly, and achieves the requirements of miniaturization and high quality. Additionally, the following condition is also satisfied: 0.15 mm < D < 0.50 mm.

[0255] The various technical features in the imaging system lens assembly disclosed above can be combined and configured to achieve the corresponding effects.

[0256] The imaging system lens assembly disclosed herein can use lenses made of glass or plastic. Using glass lenses increases the freedom of refractive power configuration within the imaging system lens 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 imaging system lens assembly disclosed herein. Aspherical surfaces can be manufactured using methods such as plastic injection molding or molding glass lenses.

[0257] In the imaging system lens assembly disclosed herein, additives can be selectively added to any (or more) lens materials to produce light absorption or 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 filter 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. 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.

[0258] In the imaging system lens assembly 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.

[0259] In the imaging system lens assembly 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 imaging system lens assembly 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.

[0260] In the imaging system lens assembly disclosed herein, 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.

[0261] The imaging surface of the lens assembly in the imaging system 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 lens assembly of the imaging system disclosed herein, one or more imaging correction elements (such as planar elements) can be selectively arranged between the lens closest to the imaging surface in the imaging optical path and the imaging surface 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.

[0262] In the imaging system lens assembly disclosed herein, at least one element with a light-path-deflecting function, such as a prism or mirror, can be selectively placed between the subject and the imaging plane in the optical path. This provides a higher degree of spatial flexibility in the imaging system lens assembly, allowing the thinner and lighter electronic devices to be made less constrained by the overall optical length of the imaging system lens assembly. For further explanation, please refer to... Figure 35A as well as Figure 35B ,in Figure 35A A schematic diagram illustrating one configuration of the optical path reversing element LF in an imaging system lens assembly, in accordance with this disclosure. Figure 35B A schematic diagram illustrating another configuration of the optical path reversing element LF in an imaging system lens assembly, according to this disclosure. For example... Figure 35A as well as Figure 35B As shown, the imaging system lens 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 reversing element LF, and a second optical axis OA2, wherein the optical path reversing element LF can be as follows: Figure 35A The image shown is positioned between the lens group LG of the subject and the imaging system lens assembly, or as shown in the image. Figure 35B The diagram shows the lens group LG positioned between the imaging system's lens assembly and the imaging plane IMG. Please also refer to... Figure 35C The diagram illustrates a configuration of the two optical path switching elements LF1 and LF2 in an imaging system lens assembly, in accordance with this disclosure. Figure 35C As shown, the imaging system lens assembly can also follow 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 disposed between the subject and the lens group LG of the imaging system lens assembly, and the optical path reversing element LF2 is disposed between the lens group LG of the imaging system lens assembly and the imaging plane IMG. The imaging system lens 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.

[0263] In addition, the imaging system lens assembly provided in this disclosure can be equipped with at least one aperture stop, such as an aperture stop, glare stop, or field stop, as needed, which helps to reduce stray light and improve image quality.

[0264] In the imaging system lens assembly disclosed herein, the aperture configuration can be either a front aperture or a center aperture. A front aperture means the aperture is set between the subject and the first lens, while a center aperture means the aperture is set between the first lens and the imaging plane. A front aperture allows for a longer distance between the exit pupil of the imaging system lens assembly and the imaging plane, resulting in a telecentric effect and increasing the efficiency of image reception by the CCD or CMOS sensor. A center aperture helps to expand the field of view of the imaging system lens assembly, giving it the advantages of a wide-angle lens.

[0265] 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.

[0266] The imaging system lens assembly 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.

[0267] This disclosure provides an image-capturing device comprising an imaging system lens assembly as described above and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the imaging system lens assembly. The configuration of the refractive power of the third lens and the lens distribution facilitate the correction of spherical aberration and the balancing of the volume distribution of the imaging system lens assembly. Preferably, the image-capturing device may further include a lens barrel, a support device, or a combination thereof.

[0268] 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 temporary storage unit, or a combination thereof.

[0269] Based on the above implementation methods, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0270] <First Embodiment>

[0271] Please refer to Figure 1A as well as Figure 2 ,in Figure 1A 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 1A As can be seen, the imaging device 1 of the first embodiment includes an imaging system lens group (not otherwise labeled) and an electronic photosensitive element IS. The imaging system lens group includes, in sequence from the object side to the image side of the optical path, a first lens E1, an aperture ST, a second lens E2, a reflective element E8, a third lens E3, a fourth lens E4, an aperture stop S1, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging system lens group. The imaging system lens group includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the six lenses.

[0272] The first lens E1 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, in conjunction with reference... Figure 27A Its drawing is based on Figure 1A A schematic diagram of some parameters, the inflection point IP of each lens, and the critical point CP in the first embodiment. Figure 27A It can be seen that the object-side surface of the first lens contains an inflection point IP.

[0273] The second lens E2 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both are aspherical.

[0274] 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. Additionally, the object-side surface of the third lens includes a curvature point IP (marked at...). Figure 27A The image-side surface of the third lens contains a curvature point IP (marked at...). Figure 27A ).

[0275] The fourth lens, E4, has positive refractive power and is made of plastic. Both its object-side and image-side surfaces are convex near the optical axis, and both are aspherical. Additionally, the image-side surface of the fourth lens includes a curvature point IP (marked at...). Figure 27A ).

[0276] The fifth lens, E5, has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis; both are aspherical. Additionally, the object-side surface of the fifth lens includes three inflection points IP (marked at...). Figure 27A The image-side surface of the fifth lens contains a curvature point IP (marked at...). Figure 27A ).

[0277] 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 27A The image-side surface of the sixth lens contains a curvature point IP (marked at...). Figure 27A And its off-axis location contains a critical point CP (marked at...). Figure 27A ).

[0278] In the first embodiment, the reflecting element E8 is a prism made of glass, and it is disposed between the second lens E2 and the third lens E3.

[0279] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging plane IMG without affecting the focal length of the imaging system lens group.

[0280] The equations for the aspherical surfaces of the above lenses are expressed as follows:

[0281]

[0282] ;in:

[0283] 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;

[0284] Y: The perpendicular distance between a point on the aspherical curve and the optical axis;

[0285] R: Radius of curvature;

[0286] k: cone coefficient; and

[0287] Ai: The i-th order aspherical coefficient.

[0288] In the imaging system lens group of the first embodiment, the focal length of the imaging system lens group is f, the aperture value (f-number) of the imaging system lens group is Fno, and half of the maximum field of view in the imaging system lens group is HFOV, with the following values: f = 3.26 mm; Fno = 2.41; and HFOV = 42.9 degrees.

[0289] In the imaging system lens group of the first embodiment, the refractive index of the third lens E3 is N3, and the refractive index of the sixth lens E6 is N6, which satisfies the following condition: (N3+N6) / 2 = 1.69.

[0290] In the imaging system lens group of the first embodiment, the Abbe number of the third lens E3 is V3, 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: (V4+V5) / (V3+V6) = 3.05.

[0291] In the imaging system lens group of the first embodiment, the focal length of the imaging system lens group is f, 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, and the distance between the first lens E1 and the second lens E2 on the optical axis is T12, which satisfies the following condition: (CT1+T12+CT2) / f = 0.48.

[0292] In the imaging system lens group of the first embodiment, the distance between the second lens E2 and the third lens E3 on the optical axis is T23, the focal length of the imaging system lens group is f, and the maximum image height of the imaging system lens group is ImgH, which satisfies the following conditions: T23 / f = 1.47; and T23 / ImgH = 1.64.

[0293] In the imaging system lens group of the first embodiment, the focal length of the imaging system lens group is f, 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 sum of the optical axis spacing between any two adjacent lenses in the imaging system lens group is ΣAT, which satisfies the following conditions: (T34+T56) / f = 0.08; and (T34+T56) / ΣAT = 0.03; in the first embodiment, the optical axis spacing between two adjacent lenses is the optical axis spacing between two adjacent surfaces of the two adjacent lenses; ΣAT = T12+T23+T34+T45+T56.

[0294] In the imaging system lens group of the first embodiment, the radius of curvature of the object-side surface of the second lens is R3, and the radius of curvature of the image-side surface of the second lens is R4, which satisfies the following condition: (R3-R4) / (R3+R4) = 1.04.

[0295] In the imaging system lens group of the first embodiment, the radius of curvature of the image-side surface of the third lens is R6, and the radius of curvature of the object-side surface of the fourth lens is R7, which satisfies the following condition: (R6-R7) / (R6+R7) = -0.22.

[0296] In the imaging system lens group of the first embodiment, 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: (R11-R12) / (R11+R12) = 0.22.

[0297] In the imaging system lens group of the first embodiment, the focal length of the imaging system lens group is f, the thickness of the first lens E1 on the optical axis is CT1, and the thickness of the second lens E2 on the optical axis is CT2, which satisfies the following condition: f / (CT1+CT2) = 4.61.

[0298] In the imaging system lens group of the first embodiment, the focal length of the first lens E1 is f1 and the focal length of the second lens E2 is f2, which satisfies the following condition: f2 / f1 = -1.02.

[0299] In the imaging system lens group of the first embodiment, the focal length of the imaging system lens group is f, and the radius of curvature of the object-side surface of the first lens is R1, which satisfies the following condition: f / R1 = 0.39.

[0300] In the imaging system lens group of the first embodiment, the focal length of the imaging system lens group is f, and the radius of curvature of the object-side surface of the fourth lens is R7, which satisfies the following condition: f / R7 = 0.86.

[0301] In the imaging system lens group of the first embodiment, the focal length of the imaging system lens group is f, the combined focal length of the first lens E1 and the second lens E2 is f12, the combined focal length of the third lens E3, the fourth lens E4, the fifth lens E5 and the sixth lens E6 is f3456, and the radius of curvature of the image-side surface of the second lens is R4, which satisfies the following conditions: f / f12 = 0.26; f / f3456 = 0.76; and f12 / R4 = -6.22.

[0302] In the imaging system lens group of the first embodiment, the focal length of the imaging system lens group is f, the focal length of the second lens E2 is f2, the combined focal length of the fifth lens E5 and the sixth lens E6 is f56, and the radius of curvature of the image-side surface of the second lens is R4, which satisfies the following conditions: f2 / f56 = 0.59; f2 / R4 = -1.84; and f56 / f = 1.95.

[0303] In the imaging system lens group of the first embodiment, the focal length of the imaging system lens group is f, the focal length of the fifth lens E5 is f5, 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 satisfy the following conditions: f5×f6 / (f×f) = -2.23; and f6 / R11+f6 / R12 = -9.56.

[0304] In the imaging system lens group of the first embodiment, the radius of curvature of the image-side surface of the third lens is R6, and the radius of curvature of the object-side surface of the fourth lens is R7, which satisfies the following condition: R6 / R7 = 0.64.

[0305] In the imaging system lens group of the first embodiment, the maximum distance between the optically effective area of ​​the object-side surface of the first lens and the optical axis is Y11, the maximum distance between the optically effective area of ​​the image-side surface of the second lens and the optical axis is Y22, and the maximum distance between the optically effective area of ​​the image-side surface of the sixth lens and the optical axis is Y62, which satisfy the following conditions: Y62 / Y11 = 2.60; and Y62 / Y22 = 3.40.

[0306] In the imaging system lens 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, and the optical axis spacing between the fifth lens E5 and the sixth lens E6 is T56. The largest of T12, T23, T34, T45, and T56 is ATmax, and the focal length of the imaging system lens group is f, which satisfies the following condition: ATmax / f = 1.47; (Refer to reference) Figure 28 The diagram illustrates some parameters according to the first embodiment, where ATmax = T23 in the first embodiment.

[0307] In the imaging system lens group of the first embodiment, the distance from the aperture ST to the imaging surface IMG on the optical axis is SL, and the distance from the object-side surface of the first lens to the imaging surface IMG on the optical axis is TL, which satisfies the following condition: SL / TL = 0.92.

[0308] In the imaging system lens group of the first embodiment, the distance from the object-side surface of the first lens to the imaging surface IMG on the optical axis is TL, the maximum image height of the imaging system lens group is ImgH, and the entrance pupil diameter of the imaging system lens group is EPD, which satisfies the following conditions: TL / ImgH = 4.45; and TL / EPD = 9.62.

[0309] In the imaging system lens group of the first embodiment, the maximum field of view of the imaging system lens group is FOV, which satisfies the following condition: FOV = 85.8 degrees.

[0310] Please refer to Table 1 and Table 2 below.

[0311]

[0312]

[0313]

[0314] Table 1 is... Figure 1A The first embodiment provides detailed structural data, where the units for radius of curvature, thickness, and focal length are mm, and surfaces 0-19 sequentially represent surfaces from the object side to the image side, with the refractive index measured at a reference wavelength. Table 2 shows the aspherical data for the first embodiment, where k represents the cone coefficient in the aspherical curve equation, and A4-A24 represent the 4th-24th order aspherical coefficients of each surface. Furthermore, the tables for the following embodiments correspond to schematic diagrams and aberration curves for each embodiment. The definitions of the data in these tables are the same as those in Tables 1 and 2 of the first embodiment, and will not be repeated here.

[0315] Reference Figure 1B as well as Figure 27B ,in Figure 1B A schematic diagram illustrating the imaging device 1 in conjunction with another reflective element E8 according to the first embodiment of this disclosure is shown. Figure 27B Drawing according to Figure 1B A schematic diagram of some parameters, the inflection point IP of each lens, and the critical point CP in the first embodiment. Figure 1B and Figure 27B and Figure 1A and Figure 27A The difference lies only in, Figure 1B and Figure 27B The reflective element E8 can change the direction of the optical axis, which is beneficial for its configuration in electronic devices with different needs.

[0316] Additionally, please refer to the following: Figure 29A as well as Figure 29B ,in Figure 29A Drawing according to Figure 1A A schematic diagram of the imaging system lens assembly and lens barrels G1 and G2 in the first embodiment. Figure 29B Drawing according to Figure 1B A schematic diagram of the imaging system lens assembly and lens barrels G1 and G2 in the first embodiment. (From...) Figure 29A and Figure 29B It can be seen that the first lens E1 and the second lens E2 are disposed in the lens barrel G1, forming a front lens group; the third lens E3, the fourth lens E4, the fifth lens E5, and the sixth lens E6 are disposed in the lens barrel G2, forming a rear lens group, which can move relative to the front lens group. In detail... Figure 29A In the middle, the rear lens group moves relative to the front lens group along the optical axis X. Figure 29B In the process, because the reflecting element E8 causes the optical axis of the imaging system lens group to change from the first optical axis X1 to the second optical axis X2, the rear lens group moves relative to the front lens group along the second optical axis X2; that is, the rear lens group moves relative to the front lens group in a direction perpendicular to the first optical axis X1.

[0317] <Second Embodiment>

[0318] Please refer to Figure 3A as well as Figure 4 ,in Figure 3A 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 3A As can be seen, the imaging device 2 of the second embodiment includes an imaging system lens group (not otherwise labeled) and an electronic photosensitive element IS. The imaging system lens group, from the object side to the image side of the optical path, sequentially includes a first lens E1, an aperture ST, a second lens E2, a reflective element E8, a third lens E3, a fourth lens E4, an aperture stop S1, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging system lens group. The imaging system lens group includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the six lenses.

[0319] The first lens E1 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 first lens includes a point of inflection.

[0320] The second lens E2 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both are aspherical.

[0321] 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.

[0322] 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 are aspherical. In addition, the image-side surface of the fourth lens contains two inflection points.

[0323] The fifth lens, E5, has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis; both are aspherical. Furthermore, the object-side surface of the fifth lens contains three inflection points, and the image-side surface contains four inflection points.

[0324] 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 being aspherical. In addition, the object-side surface of the sixth lens contains two inflection points, and the image-side surface of the sixth lens contains two inflection points and a critical point at its off-axis location.

[0325] In the second embodiment, the reflecting element E8 is a prism made of glass, and it is disposed between the second lens E2 and the third lens E3.

[0326] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging plane IMG without affecting the focal length of the imaging system lens group.

[0327] Please also refer to Table 3 and Table 4 below.

[0328]

[0329]

[0330]

[0331] 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.

[0332] By referring to Tables 3 and 4, the following data can be calculated:

[0333]

[0334] Please refer to the following: Figure 3B The diagram illustrates the imaging device 2 in conjunction with another reflective element E8 according to the second embodiment of this disclosure. Figure 3B and Figure 3A The difference lies only in, Figure 3B The reflective element E8 can change the direction of the optical axis, which is beneficial for its configuration in electronic devices with different needs.

[0335] <Third Embodiment>

[0336] Please refer to Figure 5A as well as Figure 6 ,in Figure 5A 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 5AAs can be seen, the imaging device 3 of the third embodiment includes an imaging system lens group (not otherwise labeled) and an electronic photosensitive element IS. The imaging system lens group, from the object side to the image side of the optical path, sequentially includes a first lens E1, an aperture ST, a second lens E2, a reflective element E8, a third lens E3, a fourth lens E4, an aperture stop S1, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging system lens group. The imaging system lens group includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the six lenses.

[0337] The first lens E1 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 first lens includes a point of inflection.

[0338] The second lens E2 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis, both of which are aspherical. In addition, the object-side surface of the second lens contains a point of inflection.

[0339] 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.

[0340] 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 image-side surface of the fourth lens contains a point of inflection.

[0341] 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 three inflection points.

[0342] 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 being aspherical. In addition, the object-side surface of the sixth lens contains two inflection points, and the image-side surface of the sixth lens contains two inflection points and a critical point at its off-axis location.

[0343] In the third embodiment, the reflecting element E8 is a prism made of glass, and it is disposed between the second lens E2 and the third lens E3.

[0344] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging plane IMG without affecting the focal length of the imaging system lens group.

[0345] Please also refer to Table 5 and Table 6 below.

[0346]

[0347]

[0348]

[0349]

[0350] 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.

[0351] By referring to Tables 5 and 6, the following data can be calculated:

[0352]

[0353]

[0354] Please refer to the following: Figure 5B The diagram illustrates the imaging device 3 in conjunction with another reflective element E8 according to the third embodiment of this disclosure. Figure 5B and Figure 5A The difference lies only in, Figure 5B The reflective element E8 can change the direction of the optical axis, which is beneficial for its configuration in electronic devices with different needs.

[0355] <Fourth Embodiment>

[0356] Please refer to Figure 7A as well as Figure 8 ,in Figure 7A 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 7A As can be seen, the imaging device 4 of the fourth embodiment includes an imaging system lens group (not otherwise labeled) and an electronic photosensitive element IS. The imaging system lens group, from the object side to the image side of the optical path, sequentially includes a first lens E1, an aperture ST, a second lens E2, a reflective element E8, a third lens E3, a fourth lens E4, an aperture stop S1, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging system lens group. The imaging system lens group includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the six lenses.

[0357] The first lens E1 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 first lens includes a point of inflection.

[0358] The second lens E2 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both are aspherical.

[0359] 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 three inflection points, and the image-side surface of the third lens contains one inflection point.

[0360] 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 image-side surface of the fourth lens contains a point of inflection.

[0361] The fifth lens, E5, has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis; both are aspherical. Furthermore, the object-side surface of the fifth lens contains three inflection points, and the image-side surface contains two inflection points.

[0362] The sixth lens, E6, has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, both of which are aspherical. In addition, the object-side surface of the sixth lens contains two inflection points, and the image-side surface of the sixth lens contains four inflection points and a critical point at its off-axis location.

[0363] In the fourth embodiment, the reflecting element E8 is a prism made of glass, and it is disposed between the second lens E2 and the third lens E3.

[0364] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging plane IMG without affecting the focal length of the imaging system lens group.

[0365] Please also refer to Table 7 and Table 8 below.

[0366]

[0367]

[0368]

[0369]

[0370] 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.

[0371] By referring to Tables 7 and 8, the following data can be calculated:

[0372]

[0373]

[0374] Please refer to the following: Figure 7B The diagram illustrates the imaging device 4 in conjunction with another reflective element E8 according to the fourth embodiment of this disclosure. Figure 7B and Figure 7A The difference lies only in, Figure 7B The reflective element E8 can change the direction of the optical axis, which is beneficial for its configuration in electronic devices with different needs.

[0375] <Fifth Embodiment>

[0376] Please refer to Figure 9A as well as Figure 10 ,in Figure 9A 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 9A As can be seen, the imaging device 5 of the fifth embodiment includes an imaging system lens group (not otherwise labeled) and an electronic photosensitive element IS. The imaging system lens group, from the object side to the image side of the optical path, sequentially includes a first lens E1, an aperture ST, a second lens E2, a reflective element E8, a third lens E3, a fourth lens E4, an aperture stop S1, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging system lens group. The imaging system lens group includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the six lenses.

[0377] The first lens E1 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 first lens includes a point of inflection.

[0378] The second lens E2 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both are aspherical.

[0379] 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 three inflection points, and the image-side surface of the third lens contains one inflection point.

[0380] The fourth lens, E4, has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis; both are aspherical. In addition, the image-side surface of the fourth lens contains two inflection points.

[0381] The fifth lens, E5, has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis; both are aspherical. Furthermore, the object-side surface of the fifth lens contains three inflection points, and the image-side surface contains four inflection points.

[0382] 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 of which are aspherical. In addition, the object-side surface of the sixth lens contains two inflection points, and the image-side surface of the sixth lens contains two inflection points and two critical points off-axis.

[0383] In the fifth embodiment, the reflecting element E8 is a prism made of glass, and it is disposed between the second lens E2 and the third lens E3.

[0384] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging plane IMG without affecting the focal length of the imaging system lens group.

[0385] Please also refer to Tables 9 and 10 below.

[0386]

[0387]

[0388]

[0389]

[0390] 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.

[0391] By referring to Tables 9 and 10, the following data can be calculated:

[0392]

[0393] Please refer to the following: Figure 9B The diagram illustrates the imaging device 5 in conjunction with another reflective element E8 according to the fifth embodiment of this disclosure. Figure 9B and Figure 9A The difference lies only in, Figure 9B The reflective element E8 can change the direction of the optical axis, which is beneficial for its configuration in electronic devices with different needs.

[0394] <Sixth Embodiment>

[0395] Please refer to Figure 11A as well as Figure 12 ,in Figure 11A 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 11A As can be seen, the imaging device 6 of the sixth embodiment includes an imaging system lens group (not otherwise labeled) and an electronic photosensitive element IS. The imaging system lens group, from the object side to the image side of the optical path, sequentially includes a first lens E1, an aperture ST, a second lens E2, a reflective element E8, 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 filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging system lens group. The imaging system lens group includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the six lenses.

[0396] The first lens E1 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis, both of which are aspherical. In addition, the image-side surface of the first lens contains a point of inflection.

[0397] The second lens E2 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.

[0398] The third lens E3 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 third lens contains one inflection point, and the image-side surface of the third lens contains three inflection points.

[0399] 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. Furthermore, the object-side surface of the fourth lens contains two inflection points, and the image-side surface contains three inflection points.

[0400] The fifth lens, E5, has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis; both are aspherical. Furthermore, the object-side surface of the fifth lens contains two inflection points, and the image-side surface contains three inflection points.

[0401] 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 of which are aspherical. In addition, the object-side surface of the sixth lens contains four inflection points, the image-side surface contains three inflection points, and its off-axis contains three critical points.

[0402] In the sixth embodiment, the reflecting element E8 is a prism made of glass, and it is disposed between the second lens E2 and the third lens E3.

[0403] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging plane IMG without affecting the focal length of the imaging system lens group.

[0404] Please also refer to Table 11 and Table 12 below.

[0405]

[0406]

[0407]

[0408] 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.

[0409] By referring to Tables 11 and 12, the following data can be calculated:

[0410]

[0411] Please refer to the following: Figure 11B The diagram illustrates an image-capturing device 6 in conjunction with another reflective element E8 according to the sixth embodiment of this disclosure. Figure 11B and Figure 11A The difference lies only in, Figure 11B The reflective element E8 can change the direction of the optical axis, which is beneficial for its configuration in electronic devices with different needs.

[0412] <Seventh Embodiment>

[0413] Please refer to Figure 13A as well as Figure 14 ,in Figure 13A 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 13AAs can be seen, the imaging device 7 of the seventh embodiment includes an imaging system lens group (unspecified) and an electronic photosensitive element IS. The imaging system lens group, from the object side to the image side of the optical path, sequentially includes a first lens E1, an aperture ST, a second lens E2, a reflective element E8, a third lens E3, a fourth lens E4, an aperture stop S1, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging system lens group. The imaging system lens group includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the six lenses.

[0414] The first lens E1 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis, both of which are aspherical. In addition, the object-side surface of the first lens contains a point of inflection, and the image-side surface of the first lens contains a point of inflection.

[0415] The second lens E2 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis, both of which are aspherical. In addition, the object-side surface of the second lens contains two inflection points.

[0416] The third lens E3 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 third lens contains one inflection point, and the image-side surface of the third lens contains two inflection points.

[0417] 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. Furthermore, the object-side surface of the fourth lens contains six inflection points, and the image-side surface contains three inflection points.

[0418] 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 two inflection points, and the image-side surface contains three inflection points.

[0419] 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 being aspherical. In addition, the object-side surface of the sixth lens contains two inflection points, and the image-side surface of the sixth lens contains two inflection points and a critical point at its off-axis location.

[0420] In the seventh embodiment, the reflecting element E8 is a prism made of glass, and it is disposed between the second lens E2 and the third lens E3.

[0421] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging plane IMG without affecting the focal length of the imaging system lens group.

[0422] Please also refer to Table 13 and Table 14 below.

[0423]

[0424]

[0425]

[0426]

[0427] 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.

[0428] The following data can be calculated by referring to Tables 13 and 14:

[0429]

[0430] Please refer to the following: Figure 13B The diagram illustrates an image-capturing device 7 in conjunction with another reflective element E8 according to the seventh embodiment of this disclosure. Figure 13B and Figure 13A The difference lies only in, Figure 13B The reflective element E8 can change the direction of the optical axis, which is beneficial for its configuration in electronic devices with different needs.

[0431] <Eighth Embodiment>

[0432] Please refer to Figure 15A as well as Figure 16 ,in Figure 15A 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 15A As can be seen, the imaging device 8 of the eighth embodiment includes an imaging system lens group (not otherwise labeled) and an electronic photosensitive element IS. The imaging system lens group, from the object side to the image side of the optical path, sequentially includes a first lens E1, an aperture ST, a second lens E2, a reflective element E8, a third lens E3, a fourth lens E4, an aperture stop S1, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging system lens group. The imaging system lens group includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the six lenses.

[0433] The first lens E1 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 first lens includes a point of inflection.

[0434] The second lens E2 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both are aspherical.

[0435] 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.

[0436] 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 image-side surface of the fourth lens contains a point of inflection.

[0437] The fifth lens, E5, has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis; both are aspherical. Furthermore, the object-side surface of the fifth lens contains three inflection points, and the image-side surface contains four inflection points.

[0438] 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 of which are aspherical. In addition, the object-side surface of the sixth lens contains two inflection points, and the image-side surface contains three inflection points and a critical point off-axis.

[0439] In the eighth embodiment, the reflecting element E8 is a prism made of glass, and it is disposed between the second lens E2 and the third lens E3.

[0440] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging plane IMG without affecting the focal length of the imaging system lens group.

[0441] Please also refer to Table 15 and Table 16 below.

[0442]

[0443]

[0444]

[0445]

[0446] 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.

[0447] By referring to Tables 15 and 16, the following data can be calculated:

[0448]

[0449] Please refer to the following: Figure 15B The diagram illustrates an image capturing device 8 in conjunction with another reflective element E8 according to the eighth embodiment of this disclosure. Figure 15B and Figure 15A The difference lies only in, Figure 15B The reflective element E8 can change the direction of the optical axis, which is beneficial for its configuration in electronic devices with different needs.

[0450] <Ninth Embodiment>

[0451] Please refer to Figure 17A as well as Figure 18 ,in Figure 17A A schematic diagram of an image-capturing device 9 according to the ninth embodiment of this disclosure is shown. Figure 18 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the ninth embodiment. Figure 17A As can be seen, the imaging device 9 of the ninth embodiment includes an imaging system lens group (not otherwise labeled) and an electronic photosensitive element IS. The imaging system lens group includes, in sequence from the object side to the image side of the optical path, a first lens E1, an aperture ST, a second lens E2, a reflective element E8, a third lens E3, a fourth lens E4, an aperture stop S1, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging system lens group. The imaging system lens group includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the six lenses.

[0452] The first lens E1 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 first lens includes a point of inflection.

[0453] The second lens E2 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also convex near the optical axis. Both are aspherical.

[0454] The third lens E3 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. Furthermore, both the object-side and image-side surfaces of the third lens contain two inflection points.

[0455] 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 are aspherical. In addition, the image-side surface of the fourth lens contains two inflection points.

[0456] The fifth lens, E5, has positive refractive power and is made of plastic. Both its object-side and image-side surfaces are convex near the optical axis and are aspherical. Furthermore, both the object-side and image-side surfaces of the fifth lens contain three inflection points.

[0457] 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, both the object-side and image-side surfaces of the sixth lens contain two inflection points.

[0458] In the ninth embodiment, the reflecting element E8 is a prism made of plastic, and it is disposed between the second lens E2 and the third lens E3.

[0459] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging plane IMG without affecting the focal length of the imaging system lens group.

[0460] Please also refer to Tables 17 and 18 below.

[0461]

[0462]

[0463]

[0464] In the ninth 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.

[0465] By referring to Tables 17 and 18, the following data can be calculated:

[0466]

[0467] Please refer to the following: Figure 17B The diagram illustrates an image capturing device 9 in conjunction with another reflective element E8 according to the ninth embodiment of this disclosure. Figure 17B and Figure 17A The difference lies only in, Figure 17B The reflective element E8 can change the direction of the optical axis, which is beneficial for its configuration in electronic devices with different needs.

[0468] <Tenth Embodiment>

[0469] Please refer to Figure 19Aas well as Figure 20 ,in Figure 19A A schematic diagram of an image-capturing device 10 according to the tenth embodiment of this disclosure is shown. Figure 20 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the tenth embodiment. Figure 19A As can be seen, the imaging device 10 of the tenth embodiment includes an imaging system lens group (not otherwise labeled) and an electronic photosensitive element IS. The imaging system lens 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 reflective element E8, an aperture stop S2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging system lens group. The imaging system lens group includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the six lenses.

[0470] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis, both of which are aspherical. In addition, the image-side surface of the first lens contains a point of inflection.

[0471] The second lens E2 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis, both of which are aspherical. In addition, the object-side surface of the second lens contains two inflection points.

[0472] The third lens E3 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 third lens contains a point of inflection, and the image-side surface of the third lens contains a point of inflection.

[0473] 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 image-side surface of the fourth lens contains a point of inflection.

[0474] 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.

[0475] 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 of which are aspherical. In addition, the object-side surface of the sixth lens contains three inflection points, and the image-side surface of the sixth lens contains two inflection points and a critical point at its off-axis location.

[0476] In the tenth embodiment, the reflecting element E8 is a prism made of glass, and it is disposed between the second lens E2 and the third lens E3.

[0477] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging plane IMG without affecting the focal length of the imaging system lens group.

[0478] Please also refer to Table 19 and Table 20 below.

[0479]

[0480]

[0481] In the tenth 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.

[0482] By referring to Tables 19 and 20, the following data can be calculated:

[0483]

[0484] Please refer to the following: Figure 19B The diagram illustrates an image capturing device 10 in conjunction with another reflective element E8 according to the tenth embodiment of this disclosure. Figure 19B and Figure 19A The difference lies only in, Figure 19B The reflective element E8 can change the direction of the optical axis, which is beneficial for its configuration in electronic devices with different needs.

[0485] <Eleventh Embodiment>

[0486] Please refer to Figure 21A as well as Figure 22 ,in Figure 21A A schematic diagram of an image-capturing device 11 according to the eleventh embodiment of this disclosure is shown. Figure 22 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the eleventh embodiment. Figure 21A As can be seen, the imaging device 11 of the eleventh embodiment includes an imaging system lens group (not otherwise labeled) and an electronic photosensitive element IS. The imaging system lens group, from the object side to the image side of the optical path, sequentially includes an aperture ST, a first lens E1, a second lens E2, an aperture stop S1, a reflective element E8, an aperture stop S2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging system lens group. The imaging system lens group includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the six lenses.

[0487] The first lens E1 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis, both of which are aspherical. In addition, the image-side surface of the first lens contains a point of inflection.

[0488] The second lens E2 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis, both of which are aspherical. In addition, the object-side surface of the second lens contains two inflection points.

[0489] The third lens E3 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 third lens contains two inflection points, and the image-side surface of the third lens contains one inflection point.

[0490] 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 image-side surface of the fourth lens contains a point of inflection.

[0491] The fifth lens, E5, has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is also 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 four inflection points.

[0492] The sixth lens, E6, has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis, both of which are aspherical. In addition, the object-side surface of the sixth lens contains two inflection points, and the image-side surface of the sixth lens contains two inflection points and two critical points off-axis.

[0493] In the eleventh embodiment, the reflecting element E8 is a prism made of glass, and it is disposed between the second lens E2 and the third lens E3.

[0494] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging plane IMG without affecting the focal length of the imaging system lens group.

[0495] Please also refer to Table 21 and Table 22 below.

[0496]

[0497]

[0498]

[0499] In the eleventh embodiment, the equation for the aspherical surface 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.

[0500] By referring to Tables 21 and 22, the following data can be calculated:

[0501]

[0502] Please refer to the following: Figure 21B The diagram illustrates an image-capturing device 11 in accordance with the eleventh embodiment of this disclosure, in conjunction with another reflective element E8. Figure 21B and Figure 21A The difference lies only in, Figure 21B The reflective element E8 can change the direction of the optical axis, which is beneficial for its configuration in electronic devices with different needs.

[0503] <Twelfth Embodiment>

[0504] Please refer to Figure 23A as well as Figure 24 ,in Figure 23A A schematic diagram of an image-capturing device 12 according to the twelfth embodiment of this disclosure is shown. Figure 24 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the twelfth embodiment. Figure 23A As can be seen, the imaging device 12 of the twelfth embodiment includes an imaging system lens group (not otherwise labeled) and an electronic photosensitive element IS. The imaging system lens group includes, in sequence from the object side to the image side of the optical path, a first lens E1, an aperture ST, a second lens E2, a reflective element E8, an aperture stop S1, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter element E7, and an imaging surface IMG. The electronic photosensitive element IS is disposed on the imaging surface IMG of the imaging system lens group. The imaging system lens group includes six lenses (E1, E2, E3, E4, E5, E6), and there are no other interposed lenses between the six lenses.

[0505] The first lens E1 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis, both of which are aspherical. In addition, the image-side surface of the first lens contains a point of inflection.

[0506] The second lens E2 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis, both of which are aspherical. In addition, the object-side surface of the second lens contains a point of inflection, and the image-side surface of the second lens contains a point of inflection.

[0507] The third lens E3 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 object-side surface of the third lens contains one inflection point, and the image-side surface of the third lens contains two inflection points.

[0508] The fourth lens, E4, has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis; both are aspherical. In addition, the object-side surface of the fourth lens contains three inflection points, and the image-side surface of the fourth lens contains five inflection points.

[0509] The fifth lens, E5, 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. Furthermore, the object-side surface of the fifth lens contains four inflection points, and the image-side surface contains two inflection points.

[0510] 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 being aspherical. In addition, the object-side surface of the sixth lens contains two inflection points, and the image-side surface of the sixth lens contains two inflection points and a critical point at its off-axis location.

[0511] In the twelfth embodiment, the reflecting element E8 is a prism made of glass, and it is disposed between the second lens E2 and the third lens E3.

[0512] The filter element E7 is made of glass and is located between the sixth lens E6 and the imaging plane IMG without affecting the focal length of the imaging system lens group.

[0513] Please also refer to Table 23 and Table 24 below.

[0514]

[0515]

[0516]

[0517] In the twelfth embodiment, the equation for the aspherical surface 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.

[0518] By referring to Tables 23 and 24, the following data can be calculated:

[0519]

[0520] Please refer to the following: Figure 23B The diagram illustrates an image-capturing device 12 in conjunction with another reflective element E8 according to the twelfth embodiment of this disclosure. Figure 23B and Figure 23A The difference lies only in, Figure 23B The reflective element E8 can change the direction of the optical axis, which is beneficial for its configuration in electronic devices with different needs.

[0521] <Thirteenth Embodiment>

[0522] Please refer to Figure 25A , Figure 25B as well as Figure 25C Each of these figures illustrates a schematic diagram of parameters in an image-capturing device 13 according to the thirteenth embodiment of this disclosure. Figure 25A , Figure 25B as well as Figure 25C As can be seen, the imaging device 13 of the thirteenth embodiment includes an imaging system lens assembly (not otherwise labeled) and an electronic photosensitive element IS. The imaging system lens assembly includes, in sequence from the object side to the image side of the optical path, a first lens housing mechanism CM1, a second lens housing mechanism CM2, a filter element E7, and an imaging surface IMG, and the imaging system lens assembly also includes at least one light-shielding element. The electronic photosensitive element IS is disposed on the imaging surface IMG.

[0523] The first lens receiving mechanism CM1 includes a first lens group, which includes at least one lens. The lens has an object-side surface facing the object side and an image-side surface facing the image side. The optical axis of the first lens group is a first optical axis X1. Specifically, the first lens group includes a first lens E1 and a second lens E2. The light-shielding plate B1, the first lens E1, the aperture ST, and the second lens E2 are sequentially arranged in the first lens receiving mechanism CM1 from the object side to the image side of the optical path.

[0524] The second lens housing mechanism CM2 includes a reflecting element E8 and a second lens group. The second lens group includes at least one lens. Both the reflecting element E8 and the lens have an object-side surface facing the object side and an image-side surface facing the image side. The optical axis of the second lens group is the second optical axis X2. Specifically, the reflecting element E8, aperture S1, third lens E3, fourth lens E4, light-shielding plate B2, fifth lens E5, and sixth lens E6 are sequentially arranged in the second lens housing mechanism CM2 from the object side to the image side of the optical path. The reflecting element E8 is a prism, and the object-side surface of the third lens E3 has a light-shielding coating and can also be considered a light-shielding element. Furthermore, from... Figure 25B It can be seen that the second lens housing mechanism CM2 has a bearing surface AS, which is parallel to the first optical axis X1 and located between the prism (i.e. the reflecting element E8) and the second lens housing mechanism CM2.

[0525] Reference Figure 25D , Figure 25E as well as Figure 25F ,in Figure 25D A schematic diagram is shown of the first lens receiving mechanism CM1 and the second lens receiving mechanism CM2 in the image capturing device 13 according to the thirteenth embodiment of this disclosure. Figure 25E A schematic diagram of the first lens receiving mechanism CM1 and the second lens receiving mechanism CM2 in the imaging device 13 according to the thirteenth embodiment of this disclosure is shown from another perspective. Figure 25FA schematic diagram of the second lens receiving mechanism CM2 in the image capturing device 13 according to the thirteenth embodiment of this disclosure is shown. Figure 25D It can be seen that the image-side surface of the first lens housing mechanism CM1 is connected to the object-side surface of the second lens housing mechanism CM2, and the maximum length of the first lens housing mechanism CM1 along the first optical axis X1 is CM1L, while the maximum length of the second lens housing mechanism CM2 along the second optical axis X2 is CM2L. Figure 25E It can be seen that, viewed from the outermost surface of the first lens housing mechanism CM1, the maximum outer diameter of the first lens housing mechanism CM1 is CM1O, and the maximum length of the second lens housing mechanism CM2 along the second optical axis X2 is CM2L. From... Figure 25F It can be seen that the second lens housing mechanism CM2 can be divided into a prism housing space PC and a lens housing space LC. The maximum length of the second lens housing mechanism CM2 along the second optical axis X2 is CM2L, the maximum length of the prism housing space PC along the second optical axis X2 is PCL, and the maximum length of the lens housing space LC along the second optical axis X2 is LCL. The prism housing space PC is the part of the second lens housing mechanism CM2 that connects to the first lens housing mechanism CM1, thereby providing space for the image capturing device 13 to bend the optical axis, suitable for mounting on electronic devices of different sizes.

[0526] Please refer to the following: Figure 25G The diagram illustrates a schematic representation of the first lens receiving mechanism CM1 in the image capturing device 13 according to the thirteenth embodiment of this disclosure. Figure 25G It can be seen that, viewed from the object-side surface of the first lens housing mechanism CM1, the object-side opening OP of the imaging system lens group defines a circumcircle and an inscribed circle. The circumcircle is the smallest circle covering the opening OP, and its radius is SDB1. The inscribed circle is the largest circle not covering the first lens housing mechanism CM1, and its radius is SDB2. (This is further supported by a reference...) Figures 25A to 25CThe maximum effective diameter of the object-side surface of the first lens is Y1R1. The height of the second lens housing mechanism CM2 along the first optical axis X1 is RBH. The length of the first optical axis X1 in the prism (i.e., the reflecting element E8) is THP1. The length of the second optical axis X2 in the prism (i.e., the reflecting element E8) is THP2. The minimum height difference between the object-side opening surface of the imaging system lens group and the second lens housing mechanism CM2 along the first optical axis X1 is DH. The distance parallel to the first optical axis X1 at the maximum effective diameter of the object-side surface of the prism (i.e., the object-side surface of the reflecting element E8) to the adjacent lens surface (i.e., the image-side surface of the second lens E2) is PG1. The distance parallel to the second optical axis X2 at the maximum effective diameter of the prism image-side surface (i.e., the image-side surface of the reflecting element E8) to the adjacent lens surface (i.e., the object-side surface of the third lens E3) is PG2. The shortest distance from the intersection of the object-side surface of the reflecting element E8 and the first optical axis X1 along the second optical axis X2 to the second lens housing mechanism CM2 is PD1. The shortest distance from the intersection of the image-side surface of the prism (i.e., the image-side surface of the reflecting element E7) and the second optical axis X2 along the first optical axis X1 to the second lens housing mechanism CM2 is PD2. The distance from the object-side lens surface of the first lens group (i.e., the object-side surface of the first lens E1) to the image-side lens surface (i.e., the image-side surface of the second lens E2) on the optical axis (i.e., the first optical axis X1) is TD1. The distance from the object-side lens surface of the second lens group (i.e., the object-side surface of the third lens E3) to the image-side lens surface (i.e., the image-side surface of the sixth lens E6) on the optical axis (i.e., the second optical axis X2) is TD2. The length of the bearing surface AS along the first optical axis X1 is D. Their values ​​and the conditions they satisfy are listed in Table 25 below.

[0527] In conjunction with reference Figure 25H , Figure 25I as well as Figure 25J ,in Figure 25H A schematic diagram of the light-shielding element in the imaging device 13 according to the thirteenth embodiment of this disclosure is shown. Figure 25I A schematic diagram of the third lens E3 in the imaging device 13 according to the thirteenth embodiment of this disclosure is shown. Figure 25J A schematic diagram of the light-shielding plate B2 in the imaging device 13 according to the thirteenth embodiment of this disclosure is shown. Figure 25H , Figure 25I as well as Figure 25JAs can be seen, the imaging device 13 of the thirteenth embodiment includes three light-blocking elements: a light-blocking plate B1, a third lens E3, and a light-blocking plate B2. Each light-blocking element includes a light-blocking portion C1 and a light-transmitting portion C2. The light-blocking portion C1 is the part of the light-blocking element that cannot transmit light, and the light-transmitting portion C2 is the part of the light-blocking element that can transmit light. The light-transmitting portion C2 can be defined by an circumcircle and an incircle. The circumcircle is the maximum aperture of the light-transmitting portion C2, and the radius of the circumcircle of the maximum aperture of the light-transmitting portion C2 of the light-blocking element is D1. The incircle is the maximum aperture of the light-blocking element that does not cover the light-blocking portion, and the radius of the incircle of the maximum aperture of the light-blocking portion C1 that does not cover the light-blocking portion C1 is D2. Their values ​​and the conditions they satisfy will be listed in Tables 25 and 26 below. In addition, the light-transmitting portion C2 has multiple protrusions, and the number of protrusions of the light-blocking plate B1, the third lens E3, and the light-blocking plate B2 are 24, 36, and 30, respectively. Furthermore, the effective diameter of the third lens E3 is non-circular, corresponding to the setting of the light-shielding part C1, and its light-shielding part C1 is a subwavelength structure.

[0528] In the thirteenth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions of the parameters in Tables 25 and 26 below are the same as in the first embodiment and the foregoing paragraphs, and will not be repeated here.

[0529]

[0530]

[0531] <Fourteenth Embodiment>

[0532] Please refer to Figure 26A , Figure 26B as well as Figure 26C Each of these figures illustrates a schematic diagram of parameters in an image-capturing device 14 according to the fourteenth embodiment of this disclosure. Figure 26A , Figure 26B as well as Figure 26C As can be seen, the imaging device 14 of the fourteenth embodiment includes an imaging system lens assembly (not otherwise labeled) and an electronic photosensitive element IS. The imaging system lens assembly includes, in sequence from the object side to the image side of the optical path, a first lens housing mechanism CM1, a second lens housing mechanism CM2, a filter element E7, and an imaging surface IMG, and the imaging system lens assembly also includes at least one light-shielding element. The electronic photosensitive element IS is disposed on the imaging surface IMG.

[0533] The first lens receiving mechanism CM1 includes a first lens group, which includes at least one lens. The lens has an object-side surface facing the object side and an image-side surface facing the image side. The optical axis of the first lens group is a first optical axis X1. Specifically, the first lens group includes a first lens E1 and a second lens E2. The light-shielding plate B1, the first lens E1, the aperture ST, and the second lens E2 are sequentially arranged in the first lens receiving mechanism CM1 from the object side to the image side of the optical path.

[0534] The second lens housing mechanism CM2 includes a reflecting element E8 and a second lens group. The second lens group includes at least one lens. Both the reflecting element E8 and the lens have an object-side surface facing the object side and an image-side surface facing the image side. The optical axis of the second lens group is the second optical axis X2. Specifically, the reflecting element E8, aperture S1, third lens E3, light-shielding plate B3, fourth lens E4, light-shielding plate B4, fifth lens E5, light-shielding plate B2, and sixth lens E6 are sequentially arranged in the second lens housing mechanism CM2 from the object side to the image side of the optical path. The reflecting element E8 is a prism, and the object-side surface of the third lens E3 has a light-shielding coating and can also be considered a light-shielding element. Furthermore, from... Figure 26B It can be seen that the second lens housing mechanism CM2 has a bearing surface AS, which is parallel to the first optical axis X1 and located between the prism (i.e. the reflecting element E8) and the second lens housing mechanism CM2.

[0535] Reference Figure 26D , Figure 26E as well as Figure 26F ,in Figure 26D A schematic diagram is shown of the first lens receiving mechanism CM1 and the second lens receiving mechanism CM2 in the image capturing device 14 according to the fourteenth embodiment of this disclosure. Figure 26E A schematic diagram of the first lens receiving mechanism CM1 and the second lens receiving mechanism CM2 in the image capturing device 14 according to the fourteenth embodiment of this disclosure is shown from another perspective. Figure 26F A schematic diagram of the second lens receiving mechanism CM2 in the image capturing device 14 according to the fourteenth embodiment of this disclosure is shown. Figure 26D It can be seen that the image-side surface of the first lens housing mechanism CM1 is connected to the object-side surface of the second lens housing mechanism CM2, and the maximum length of the first lens housing mechanism CM1 along the first optical axis X1 is CM1L, while the maximum length of the second lens housing mechanism CM2 along the second optical axis X2 is CM2L. Figure 26E It can be seen that, viewed from the outermost surface of the first lens housing mechanism CM1, the maximum outer diameter of the first lens housing mechanism CM1 is CM1O, and the maximum length of the second lens housing mechanism CM2 along the second optical axis X2 is CM2L. From... Figure 26FIt can be seen that the second lens housing mechanism CM2 can be divided into a prism housing space PC and a lens housing space LC. The maximum length of the second lens housing mechanism CM2 along the second optical axis X2 is CM2L, the maximum length of the prism housing space PC along the second optical axis X2 is PCL, and the maximum length of the lens housing space LC along the second optical axis X2 is LCL. The prism housing space PC is the part of the second lens housing mechanism CM2 that connects to the first lens housing mechanism CM1, thereby providing space for the image capturing device 14 to bend the optical axis, suitable for mounting on electronic devices of different sizes.

[0536] Please refer to the following: Figure 26G The diagram illustrates a schematic representation of the first lens receiving mechanism CM1 in the image-capturing device 14 according to the fourteenth embodiment of this disclosure. Figure 26G It can be seen that, viewed from the object-side surface of the first lens housing mechanism CM1, the object-side opening OP of the imaging system lens assembly defines a circumcircle and an inscribed circle. The circumcircle is the smallest circle covering the opening OP, and its radius is SDB1. The inscribed circle is the largest circle not covering the first lens housing mechanism CM1, and its radius is SDB2. (This is further supported by a reference...) Figures 26A to 26CThe maximum effective diameter of the object-side surface of the first lens is Y1R1. The height of the second lens housing mechanism CM2 along the first optical axis X1 is RBH. The length of the first optical axis X1 in the prism (i.e., the reflecting element E8) is THP1. The length of the second optical axis X2 in the prism (i.e., the reflecting element E8) is THP2. The minimum height difference between the object-side opening surface of the imaging system lens group and the second lens housing mechanism CM2 along the first optical axis X1 is DH. The distance parallel to the first optical axis X1 at the maximum effective diameter of the object-side surface of the prism (i.e., the object-side surface of the reflecting element E8) to the adjacent lens surface (i.e., the image-side surface of the second lens E2) is PG1. The distance parallel to the second optical axis X2 at the maximum effective diameter of the image-side surface of the prism (i.e., the image-side surface of the reflecting element E8) to the adjacent lens surface (i.e., the object-side surface of the third lens E3) is PG2. The shortest distance from the intersection of the object-side surface of element E8 and the first optical axis X1 along the second optical axis X2 to the second lens housing mechanism CM2 is PD1. The shortest distance from the intersection of the mirror-side surface of the prism (i.e., the image-side surface of the reflecting element E7) and the second optical axis X2 along the first optical axis X1 to the second lens housing mechanism (CM2) is PD2. The distance from the object-side lens surface of the first lens group (i.e., the object-side surface of the first lens E1) to the image-side lens surface (i.e., the image-side surface of the second lens E2) on the optical axis (i.e., the first optical axis X1) is TD1. The distance from the object-side lens surface of the second lens group (i.e., the object-side surface of the third lens E3) to the image-side lens surface (i.e., the image-side surface of the sixth lens E6) on the optical axis (i.e., the second optical axis X2) is TD2. The length of the bearing surface AS along the first optical axis X1 is D. Their values ​​and the conditions they satisfy are listed in Table 27 below.

[0537] In conjunction with reference Figure 26H , Figure 26I as well as Figure 26J ,in Figure 26H A schematic diagram of the light-shielding element in the imaging device 14 according to the fourteenth embodiment of this disclosure is shown. Figure 26I A schematic diagram of the light-shielding plate B2 in the imaging device 14 according to the fourteenth embodiment of this disclosure is shown. Figure 26J A schematic diagram of the sixth lens E6 in the image-capturing device 14 according to the fourteenth embodiment of this disclosure is shown. Figure 26H , Figure 26I as well as Figure 26JAs can be seen, the imaging device 14 of the fourteenth embodiment includes three light-blocking elements: a light-blocking plate B1, a light-blocking plate B2, and a sixth lens E6. Each light-blocking element includes a light-blocking portion C1 and a light-transmitting portion C2. The light-blocking portion C1 is the part of the light-blocking element that cannot transmit light, and the light-transmitting portion C2 is the part of the light-blocking element that can transmit light. The light-transmitting portion C2 can be defined by an circumcircle and an incircle. The circumcircle is the maximum aperture of the light-transmitting portion C2, and the radius of the circumcircle of the maximum aperture of the light-transmitting portion C2 of the light-blocking element is D1. The incircle is the maximum aperture of the light-blocking element that does not cover the maximum aperture of the light-blocking portion C1, and the radius of the incircle of the light-blocking element that does not cover the maximum aperture of the light-blocking portion C1 is D2. Their values ​​and the conditions they satisfy are listed in Tables 27 and 28 below. In addition, the light-transmitting portion C2 has multiple protrusions, and the number of protrusions on the light-shielding plate B1, light-shielding plate B2, and sixth lens E6 are 24, 10, and 14, respectively. Furthermore, the effective diameter of the sixth lens E6 is non-circular, corresponding to the setting of the light-shielding portion C1, and its light-shielding portion C1 is a subwavelength structure.

[0538] In the fourteenth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions of the parameters in Tables 27 and 28 below are the same as in the first embodiment and the foregoing paragraphs, and will not be repeated here.

[0539]

[0540]

[0541] <Fifteenth Embodiment>

[0542] Please refer to Figure 30 This illustration shows a perspective view of an image-capturing device 100 according to the fifteenth embodiment of this disclosure. Figure 30 As can be seen, the image capturing device 100 of the fifteenth 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 imaging system lens assembly of this disclosure and a lens barrel (not otherwise labeled) that carries the imaging system lens 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.

[0543] The drive unit assembly 102 can be an autofocus module, and its drive method can be a voice coil motor, microelectromechanical system, piezoelectric system, or shape memory metal drive system. The drive unit assembly 102 enables the imaging system lens group to achieve a better imaging position, and can provide clear images of the subject at different object distances.

[0544] 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 imaging system lens assembly, which can truly present the good image quality of the imaging system lens 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 fifteenth embodiment, the image stabilization module 104 is a gyroscope, but it is not limited thereto. By adjusting the changes in different axes of the imaging system lens assembly to compensate for the blurred image caused by shaking at the moment of shooting, the image 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.

[0545] <Sixteenth Embodiment>

[0546] Please refer to Figure 31A , Figure 31B and Figure 31C ,in Figure 31A A schematic diagram showing one side of an electronic device 200 according to the sixteenth embodiment of this disclosure is provided. Figure 31B Drawing according to Figure 31A A schematic diagram of the other side of the electronic device 200. Figure 31C Drawing according to Figure 31A A system schematic diagram of the electronic device 200. (By...) Figure 31A , Figure 31B and Figure 31CAs can be seen, the electronic device 200 of the sixteenth 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 to provide supplementary lighting, and uses the subject distance information provided by the focus assist module 202 to quickly focus. 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.

[0547] In the sixteenth embodiment, at least one of the image-capturing devices 100, 110, 120, 130, and 140 may include the imaging system lens group disclosed herein, and may have the same or similar structure as the image-capturing device 100 in the fifteenth embodiment, which will not be described again here. Specifically, in the sixteenth embodiment, image-capturing devices 100 and 110 may be a wide-angle image-capturing device and an ultra-wide-angle image-capturing device, respectively, or a wide-angle image-capturing device and a telephoto image-capturing device, respectively. 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 image-capturing devices 110, 120, 130, and 140 and other components can be... Figure 31C The image capturing device 100 shown in the figure is the same as that shown in the figure, or may be adapted to the type of image capturing device, and will not be shown or described in detail here.

[0548] <Seventeenth Embodiment>

[0549] Please refer to Figure 32 The diagram illustrates a side view of an electronic device 300 according to the seventeenth embodiment of this disclosure. The electronic device 300 of the seventeenth embodiment is a smartphone, and the electronic device 300 includes image capturing devices 310, 320, and 330 and a flash module 301.

[0550] The electronic device 300 of the seventeenth embodiment may include the same or similar elements as those in the sixteenth 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 sixteenth embodiment, which will not be repeated here. The image capturing devices 310, 320, and 330 in the seventeenth embodiment may all include the imaging system lens group disclosed herein, and may all have the same or similar structure as the image capturing device 100 in the fifteenth 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 reversal element), or may be other types of image capturing devices, and is not limited to this configuration.

[0551] <Eighteenth Embodiment>

[0552] Please refer to Figure 33 This is a schematic diagram illustrating one side of an electronic device 400 according to the eighteenth embodiment of this disclosure. Figure 33 It is understood that the electronic device 400 of the eighteenth embodiment is a smartphone. The electronic device 400 includes image capturing devices 410, 420, 430, 440, 450, 460, 470, 480, 490 and a flash module 401.

[0553] The electronic device 400 of the eighteenth embodiment may include the same or similar components as those in the sixteenth embodiment described above, 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 sixteenth embodiment, and will not be repeated here. The image capturing devices 410, 420, 430, 440, 450, 460, 470, 480, and 490 in the eighteenth embodiment may all include the imaging system lens group disclosed herein, and may all have the same or similar structure as the image capturing device 100 in the fifteenth embodiment described above, and will not be repeated here.

[0554] 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.

[0555] <Nineteenth Embodiment>

[0556] Please refer to Figure 34A as well as Figure 34B ,in Figure 34AA schematic diagram showing one side of an electronic device 500 according to the nineteenth embodiment of this disclosure is provided. Figure 34B Drawing according to Figure 34A A schematic diagram of the other side of the electronic device 500. (By...) Figure 34A as well as Figure 34B It is understood that the electronic device 500 of the nineteenth embodiment is a smartphone, and the electronic device 500 includes image capturing devices 510, 520, 530, 540 and user interface 504.

[0557] The electronic device 500 of the nineteenth embodiment may include the same or similar components as those in the sixteenth embodiment, and the connection relationships between the image capturing devices 510, 520, 530, 540 and the user interface 504 and other components may also be the same or similar as those disclosed in the sixteenth embodiment, and will not be repeated here. In detail, the image capturing device 510 may capture an image through a non-circular opening on the outside of the electronic device, and the image capturing devices 520, 530, and 540 may be a telephoto image capturing device, a wide-angle image capturing device, and an ultra-wide-angle image capturing device, respectively, or may be other types of image capturing devices, and are not limited to this configuration.

[0558] 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 imaging system lens assembly, characterized in that, It contains six lenses, which are arranged in the following 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, and a sixth lens; each of the lenses has an object-side surface facing the object side and an image-side surface facing the image side; The first lens has negative refractive power; the second lens has positive refractive power; the third lens has negative refractive power; the image-side surface of the sixth lens is concave near the optical axis; at least one surface of at least one of the first to the sixth lens contains at least one inflection point. The imaging system comprises six lenses; the distance between the second and third lenses on the optical axis is T23; the focal length of the imaging system is f; the focal length of the first lens is f1; the focal length of the second lens is f2; the combined focal length of the first and second lenses is f12; the radius of curvature of the object-side surface of the sixth lens is R11; the radius of curvature of the image-side surface of the sixth lens is R12; and the maximum field of view (FOV) of the imaging system satisfies the following conditions: 0.45 < T23 / f < 3.50; -0.55 < (R11-R12) / (R11+R12) < 0.75; 30.0 degrees < FOV < 125.0 degrees; -1.22 < f2 / f1; and 0.16 < f / f12 < 0.

67.

2. The imaging system lens assembly as described in claim 1, characterized in that, The first lens is crescent-shaped; the object-side surface and the image-side surface of the fourth lens each contain at least one convex surface.

3. The imaging system lens assembly as described in claim 1, characterized in that, The image-side surface of the second lens is convex near the optical axis.

4. The imaging system lens assembly as described in claim 1, characterized in that, The refractive index of the third lens is N3, and the refractive index of the sixth lens is N6, which satisfy the following conditions: 1.60 < (N3+N6) / 2.

5. The imaging system lens assembly as described in claim 1, characterized in that, The optical axis spacing between the third and fourth lenses is T34, and the optical axis spacing between the fifth and sixth lenses is T56. The sum of the optical axis spacing between any two adjacent lenses in the imaging system lens group is ΣAT, which satisfies the following condition: 0 < (T34+T56) / ΣAT < 0.

09.

6. The imaging system lens assembly as described in claim 1, characterized in that, The focal length of the lens group in this imaging system is f, and the combined focal length of the third, fourth, fifth, and sixth lenses is f3456, which satisfies the following condition: 0.55 < f / f3456 < 1.

10.

7. The imaging system lens assembly as described in claim 1, characterized in that, The refractive power of the fifth lens has a different sign than that of the sixth lens. The focal length of the lens group in the imaging system is f, and the combined focal length of the fifth and sixth lenses is f56, which satisfies the following condition: 0.75 < f56 / f < 5.

00.

8. The imaging system lens assembly as described in claim 1, characterized in that, The imaging system has a focal length of f for its lens group, a thickness of CT1 on the optical axis for the first lens, a thickness of CT2 on the optical axis for the second lens, and a distance of T12 between the first and second lenses on the optical axis. It satisfies the following conditions: 0.30 < (CT1+T12+CT2) / f < 0.

85.

9. The imaging system lens assembly as described in claim 1, characterized in that, The distance between the second lens and the third lens on the optical axis is T23, and the maximum image height of the imaging system lens group is ImgH, which satisfies the following conditions: 1.00 < T23 / ImgH < 2.

00.

10. The imaging system lens assembly as described in claim 1, characterized in that, The first lens and the second lens form a front lens group, and the third lens, the fourth lens, the fifth lens and the sixth lens form a rear lens group, which is movable relative to the front lens group.

11. An imaging system lens assembly, characterized in that, It contains six lenses, which are arranged in the following 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, and a sixth lens; each of the lenses has an object-side surface facing the object side and an image-side surface facing the image side; The second lens has positive refractive power; the third lens has negative refractive power; and the image-side surface of the sixth lens is concave near the optical axis. The imaging system comprises six lenses; the distance between the second and third lenses on the optical axis is T23; the focal length of the imaging system is f; the focal length of the fifth lens is f5; the focal length of the sixth lens is f6; the combined focal length of the first and second lenses is f12; the combined focal length of the third, fourth, fifth, and sixth lenses is f3456; the radius of curvature of the image-side surface of the third lens is R6; the radius of curvature of the object-side surface of the fourth lens is R7; the radius of curvature of the object-side surface of the sixth lens is R11; the radius of curvature of the image-side surface of the sixth lens is R12; and the maximum field of view (FOV) of the imaging system meets the following conditions: 0.45 < T23 / f < 3.50; -0.80 < (R11-R12) / (R11+R12) < 1.20; 30.0 degrees < FOV < 125.0 degrees; -25.0 <f5×f6 / (f×f) < 0.90; 0.55 < f / f3456 < 1.10; -0.75 < (R6-R7) / (R6+R7) < 1.50; and 0.16 < f / f12 < 0.

67.

12. The imaging system lens assembly as described in claim 11, characterized in that, The Abbe number of the third lens is V3, 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, satisfying the following condition: 2.50 < (V4+V5) / (V3+V6) < 4.

00.

13. The imaging system lens assembly as described in claim 11, characterized in that, The second lens has a focal length of f2, and the combined focal length of the fifth and sixth lenses is f56, satisfying the following conditions: 0.25 < f2 / f56 < 2.

20.

14. The imaging system lens assembly as described in claim 11, characterized in that, The sixth lens has a focal length of f6, a radius of curvature of R11 on its object-side surface, and a radius of curvature of R12 on its image-side surface, satisfying the following conditions: -12.00 < f6 / R11+f6 / R12 < -6.

00.

15. The imaging system lens assembly as described in claim 11, characterized in that, The combined focal length of the first lens and the second lens is f12, and the radius of curvature of the image-side surface of the second lens is R4, which satisfies the following conditions: -7.50 < f12 / R4 < -1.

00.

16. The imaging system lens assembly as described in claim 11, characterized in that, Also includes: A reflective element is disposed between the second lens and the third lens; The second lens has a focal length of f2 and a radius of curvature of R4 on its image-side surface, satisfying the following conditions: -3.50 < f2 / R4 < -0.

80.

17. The imaging system lens assembly as described in claim 11, characterized in that, The distance from the object-side surface of the first lens to an imaging plane on the optical axis is TL, the entrance pupil diameter of the imaging system lens group is EPD, and the maximum image height of the imaging system lens group is ImgH, which satisfies the following conditions: 6.00 < TL / EPD < 10.00; and 3.00 < TL / ImgH < 5.

00.

18. The imaging system lens assembly as described in claim 11, characterized in that, The imaging system has a focal length of f for its lens group, a thickness of CT1 on the optical axis for the first lens, a thickness of CT2 on the optical axis for the second lens, and a distance of T12 between the first and second lenses on the optical axis. It satisfies the following conditions: 0.30 < (CT1+T12+CT2) / f < 0.

85.

19. An imaging system lens assembly, characterized in that, It contains six lenses, which are arranged in the following 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, and a sixth lens; each of the lenses has an object-side surface facing the object side and an image-side surface facing the image side; The second lens has positive refractive power; the third lens has negative refractive power; and the image-side surface of the sixth lens is concave near the optical axis. The imaging system comprises six lenses; the distance between the second and third lenses on the optical axis is T23; the focal length of the imaging system is f; the focal length of the fifth lens is f5; the focal length of the sixth lens is f6; the combined focal length of the first and second lenses is f12; the radius of curvature of the image-side surface of the third lens is R6; the radius of curvature of the object-side surface of the fourth lens is R7; 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. These features satisfy the following conditions: 0.78 < T23 / f < 3.30; -0.35 < (R11-R12) / (R11+R12) < 1.20; -25.0 < f5×f6 / (f×f) < 9.0; -0.47 < (R6-R7) / (R6+R7) < 1.90; R6 / R7 < 1.25; and 0.16 < f / f12 < 0.

67.

20. The imaging system lens assembly as described in claim 19, characterized in that, The third lens has a concave surface near the optical axis on its image-side surface; the fourth lens has a convex surface near the optical axis on its object-side surface; and the sixth lens has a convex surface near the optical axis on its object-side surface.

21. The imaging system lens assembly as described in claim 19, characterized in that, At least two of the first to sixth lenses each have at least one inflection point on at least one surface; 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 sixth lens and the optical axis is Y62, satisfying the following conditions: 2.00 < Y62 / Y11 < 3.

50.

22. The imaging system lens assembly as described in claim 19, characterized in that, The imaging system has a focal length of f for its lens group, a thickness of CT1 on the optical axis for the first lens, and a thickness of CT2 on the optical axis for the second lens, satisfying the following conditions: 2.30 < f / (CT1+CT2) < 5.

20.

23. The imaging system lens assembly as described in claim 19, characterized in that, The focal length of the lens group in this imaging system is f, and the combined focal length of the third, fourth, fifth, and sixth lenses is f3456, which satisfies the following condition: 0.55 < f / f3456 < 0.

95.

24. The imaging system lens assembly as described in claim 19, characterized in that, The imaging system has a focal length of f for its lens group, a distance T34 between the third and fourth lenses on the optical axis, and a distance T56 between the fifth and sixth lenses on the optical axis, satisfying the following conditions: 0.01 < (T34+T56) / f < 0.

15.

25. The imaging system lens assembly as described in claim 19, characterized in that, The maximum distance between the optically effective area of ​​the image-side surface of the second lens and the optical axis is Y22, and the maximum distance between the optically effective area of ​​the image-side surface of the sixth lens and the optical axis is Y62, which satisfy the following conditions: 2.00 < Y62 / Y22 < 3.

50.

26. The imaging system lens assembly as described in claim 19, characterized in that, The first lens and the second lens form a front lens group, and the third lens, the fourth lens, the fifth lens and the sixth lens form a rear lens group, which is movable relative to the front lens group.

27. An image capturing device, characterized in that, Include: The imaging system lens assembly as described in claim 19; and An electronic photosensitive element is disposed on an imaging surface of the lens group of the imaging system.

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

29. An imaging system lens assembly, characterized in that, It contains six lenses, which are arranged in the following 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, and a sixth lens; each of the lenses has an object-side surface facing the object side and an image-side surface facing the image side; The first lens has negative refractive power, the second lens has positive refractive power, the third lens has negative refractive power, the image-side surface of the sixth lens is concave near the optical axis, and the image-side surface of the sixth lens contains at least one inflection point. The imaging system comprises six lenses; the distance between the second and third lenses on the optical axis is T23; the focal length of the imaging system is f; the combined focal length of the first and second lenses is f12; the radius of curvature of the object-side surface of the first lens is R1; the radius of curvature of the object-side surface of the second lens is R3; and the radius of curvature of the image-side surface of the second lens is R4. These conditions must be met. 0.45 < T23 / f < 3.5; -0.10 < f / R1 < 1.0; 0 < (R3-R4) / (R3+R4); and 0.16 < f / f12 < 0.

67.

30. The imaging system lens assembly as described in claim 29, characterized in that, The second lens has a convex surface near the optical axis on its image-side surface; the fourth lens also has a convex surface at both the object-side surface and the image-side surface.

31. The imaging system lens assembly as described in claim 29, characterized in that, The image-side surface of the sixth lens contains at least one critical point; the refractive index of the third lens is N3, and the refractive index of the sixth lens is N6, satisfying the following condition: 1.60 < (N3+N6) / 2.

32. The imaging system lens assembly as described in claim 29, characterized in that, The optical axis spacing between the first lens and the second lens is T12, the optical axis spacing between the second lens and the third lens is T23, the optical axis spacing between the third lens and the fourth lens is T34, the optical axis spacing between the fourth lens and the fifth lens is T45, and the optical axis spacing between the fifth lens and the sixth lens is T56. The largest of T12, T23, T34, T45, and T56 is ATmax. The focal length of the lens group of the imaging system is f, which satisfies the following condition: 0.85 < ATmax / f < 1.

90.

33. The imaging system lens assembly as described in claim 29, characterized in that, The radius of curvature of the image-side surface of the third lens is R6, and the radius of curvature of the object-side surface of the fourth lens is R7, satisfying the following conditions: 0.40 < R6 / R7 < 1.

20.

34. The imaging system lens assembly as described in claim 29, characterized in that, The first lens has a focal length of f1, and the second lens has a focal length of f2, satisfying the following conditions: -1.20 < f2 / f1 < -0.

50.

35. The imaging system lens assembly as described in claim 29, characterized in that, Also includes: A reflective element is disposed between the second lens and the third lens; The imaging system has a focal length of f for the lens group, a thickness of CT1 for the first lens along the optical axis, a thickness of CT2 for the second lens along the optical axis, and a distance T12 between the first and second lenses along the optical axis, satisfying the following conditions: 0.30 < (CT1+T12+CT2) / f < 0.

85.

36. The imaging system lens assembly as described in claim 29, characterized in that, The maximum distance between the optically effective area of ​​the object-side surface of the first lens and the optical axis is Y11, the maximum distance between the optically effective area of ​​the image-side surface of the sixth lens and the optical axis is Y62, and the maximum viewing angle of the imaging system lens group is FOV, which satisfies the following conditions: 2.00 < Y62 / Y11 < 3.50; and 40.0 degrees < FOV < 95.0 degrees.

37. The imaging system lens assembly as described in claim 29, characterized in that, The distance between the second lens and the third lens on the optical axis is T23, and the maximum image height of the imaging system lens group is ImgH, which satisfies the following conditions: 1.00 < T23 / ImgH < 2.

00.

38. The imaging system lens assembly as described in claim 29, characterized in that, The first lens and the second lens form a front lens group, and the third lens, the fourth lens, the fifth lens and the sixth lens form a rear lens group, which is movable relative to the front lens group.

Images