Camera lens assembly

Abstract

The application discloses a camera lens group, which comprises eight lenses. The eight lenses are sequentially arranged from the object side to the image side as a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens. The first lens has positive refractive power, and the object side surface of the first lens is a convex surface at the vicinity of the optical axis. The second lens has negative refractive power. The image side surface of the seventh lens is a concave surface at the vicinity of the optical axis. The eighth lens has negative refractive power, the object side surface of the eighth lens is a concave surface at the vicinity of the optical axis, the image side surface of the eighth lens is a convex surface at the vicinity of the optical axis, and at least one of the object side surface and the image side surface of the eighth lens has at least one inflection point. The total number of lenses in the camera lens group is eight. When certain conditions are met, the camera lens group can meet the requirements of miniaturization and high imaging quality at the same time.

Description

[0001] This application is a divisional application. The original application was filed on December 3, 2019; the application number is 201911222881.0; and the invention title is: Camera Lens Assembly, Image Capture Device and Electronic Device. Technical Field

[0002] This invention relates to a camera lens assembly, and more particularly to a camera lens assembly that can simultaneously meet the requirements of miniaturization and high imaging quality. Background Technology

[0003] With advancements in semiconductor technology, the performance of electronic image sensors has improved, allowing pixels to reach smaller sizes. As a result, optical lenses with high image quality have become an indispensable component.

[0004] As technology advances rapidly, electronic devices equipped with optical lenses are being used in a wider range of applications, leading to more diverse requirements for these lenses. Because traditional optical lenses often struggle to balance requirements such as image quality, sensitivity, aperture size, size, and viewing angle, this invention provides an optical lens that meets these needs. Summary of the Invention

[0005] This invention provides a camera lens assembly, comprising eight lenses. Under certain conditions, the camera lens assembly provided by this invention can simultaneously meet the requirements of miniaturization and high imaging quality.

[0006] This invention provides a camera lens assembly comprising eight lenses. The eight lenses, arranged sequentially from the object side to the image side, are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The first lens has positive refractive power, and its object-side surface is convex near the optical axis. The second lens has negative refractive power. The seventh lens has a concave image-side surface near the optical axis. The eighth lens has negative refractive power, its object-side surface is concave near the optical axis, its image-side surface is convex near the optical axis, and at least one of its object-side surface and its image-side surface has at least one inflection point. The total number of lenses in the camera lens assembly is eight. The focal length of the camera lens assembly is f, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, the distance from the object-side surface of the first lens to the imaging plane on the optical axis is TL, the maximum imaging height of the camera lens assembly is ImgH, the distance from the image-side surface of the eighth lens to the imaging plane on the optical axis is BL, and the aperture value of the camera lens assembly is Fno. It satisfies the following conditions:

[0007] |f / f3|+|f / f4|+|f / f5|+|f / f6|<1.65;

[0008] 0.50 < TL / ImgH < 1.30;

[0009] 4.0 < ImgH / BL < 20.0; and

[0010] 0.8 < Fno < 2.05.

[0011] The present invention further provides a camera lens group, including eight lenses. The eight lenses are, in order from the object side to the image side, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens. The first lens has a positive refractive power, and the object-side surface of the first lens is convex near the optical axis. The second lens has a negative refractive power. The eighth lens has a negative refractive power, the object-side surface of the eighth lens is concave near the optical axis, the image-side surface of the eighth lens is convex near the optical axis, and at least one of the object-side surface and the image-side surface of the eighth lens has at least one inflection point. The total number of lenses in the camera lens group is eight. The focal length of the camera lens group is f, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, the distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, the maximum imaging height of the camera lens group is ImgH, the distance from the image-side surface of the eighth lens to the imaging surface on the optical axis is BL, and the aperture value of the camera lens group is Fno, which satisfies the following conditions:

[0012] |f / f3| + |f / f4| + |f / f5| + |f / f6| < 1.65;

[0013] 0.50 < TL / ImgH < 1.30;

[0014] 4.0 < ImgH / BL < 20.0; and

[0015] 0.8 < Fno < 2.05;

[0016] Where, the Abbe number of the first lens is V1, the Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the Abbe number of the sixth lens is V6, the Abbe number of the seventh lens is V7, the Abbe number of the eighth lens is V8, the Abbe number of the i-th lens is Vi, the refractive index of the first lens is N1, the refractive index of the second lens is N2, the refractive index of the third lens is N3, the refractive index of the fourth lens is N4, the refractive index of the fifth lens is N5, the refractive index of the sixth lens is N6, the refractive index of the seventh lens is N7, the refractive index of the eighth lens is N8, the refractive index of the i-th lens is Ni, and at least one lens in the camera lens group satisfies the following conditions:

[0017] 5.0 < Vi / Ni < 11.9, where i = 1, 2, 3, 4, 5, 6, 7 or ⑧.

[0018] The present invention further provides an imaging lens group, including eight lenses. The eight lenses are, in order from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The first lens has a positive refractive power, and the object-side surface of the first lens is convex near the optical axis. The second lens has a negative refractive power. The fifth lens has a positive refractive power. The eighth lens has a negative refractive power. The object-side surface of the eighth lens is concave near the optical axis, and the image-side surface of the eighth lens is convex near the optical axis, and at least one of the object-side surface and the image-side surface of the eighth lens has at least one inflection point. The total number of lenses in the imaging lens group is eight. The focal length of the imaging lens group is f, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, the distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, the maximum imaging height of the imaging lens group is ImgH, the distance from the image-side surface of the eighth lens to the imaging surface on the optical axis is BL, and the aperture value of the imaging lens group is Fno, which satisfies the following conditions:

[0019] |f / f3| + |f / f4| + |f / f5| + |f / f6| < 1.65;

[0020] 0.50 < TL / ImgH < 1.30;

[0021] 4.0 < ImgH / BL < 20.0; and

[0022] 0.8 < Fno < 2.05.

[0023] When |f / f3| + |f / f4| + |f / f5| + |f / f6| satisfies the above conditions, it is possible to avoid excessive correction of the image due to too large a difference in the refractive powers of the lenses, and to avoid difficult correction of ghost images and other conditions due to drastic changes in the mirror surface shape.

[0024] When TL / ImgH satisfies the above conditions, it helps to ensure a suitable balance between miniaturization and manufacturability of the imaging lens group.

[0025] When ImgH / BL satisfies the above conditions, it is possible to further shorten the back focal length of the imaging lens group, allowing the lens to make better use of the limited space.

[0026] When Fno satisfies the above conditions, it helps to ensure sufficient light input, which is beneficial to improving the image resolution.

[0027] When Vi / Ni satisfies the above conditions, it helps to enhance the correction of chromatic aberration.

[0028] The foregoing description of the invention and the following description of the embodiments are intended to demonstrate and explain the spirit and principles of the invention, and to provide a further explanation of the scope of protection of the patent application claims. Attached Figure Description

[0029] Figure 1 A schematic diagram of an image-capturing device according to a first embodiment of the present invention is shown.

[0030] Figure 2 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the first embodiment.

[0031] Figure 3 A schematic diagram of an image-capturing device according to a second embodiment of the present invention is shown.

[0032] Figure 4 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the second embodiment.

[0033] Figure 5 A schematic diagram of an image-capturing device according to a third embodiment of the present invention is shown.

[0034] Figure 6 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the third embodiment.

[0035] Figure 7 A schematic diagram of an image-capturing device according to a fourth embodiment of the present invention is shown.

[0036] Figure 8 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fourth embodiment.

[0037] Figure 9 A schematic diagram of an image-capturing device according to a fifth embodiment of the present invention is shown.

[0038] Figure 10 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fifth embodiment.

[0039] Figure 11 A schematic diagram of an image-capturing device according to a sixth embodiment of the present invention is shown.

[0040] Figure 12 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the sixth embodiment.

[0041] Figure 13 A schematic diagram of an image-capturing device according to a seventh embodiment of the present invention is shown.

[0042] Figure 14 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the seventh embodiment.

[0043] Figure 15A schematic diagram of an imaging device according to the eighth embodiment of the present invention is shown.

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

[0045] Figure 17 A schematic diagram of an image-capturing device according to a ninth embodiment of the present invention is shown.

[0046] Figure 18 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the ninth embodiment.

[0047] Figure 19 A schematic diagram of an image-capturing device according to the tenth embodiment of the present invention is shown.

[0048] Figure 20 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the tenth embodiment.

[0049] Figure 21 A perspective schematic diagram of an imaging device according to the eleventh embodiment of the present invention is shown.

[0050] Figure 22 A perspective view of one side of an electronic device according to the twelfth embodiment of the present invention is shown.

[0051] Figure 23 A perspective view of one side of an electronic device according to the thirteenth embodiment of the present invention is shown.

[0052] Figure 24 A perspective view of one side of an electronic device according to the fourteenth embodiment of the present invention is shown.

[0053] Figure 25 A schematic diagram illustrating parameters Y11, Yc71, Yc72, Yc81, and partial inflection points and critical points of a portion of the lens according to a third embodiment of the present invention is shown.

[0054] Explanation of reference numerals in the attached figures:

[0055] Image capturing devices: 10, 31, 32, 33, 41, 42

[0056] Imaging lens: 11

[0057] Drive unit: 12

[0058] Electronic photosensitive element: 13

[0059] Image stabilization module: 14

[0060] Electronic devices: 20, 30, 40

[0061] Display device: 21

[0062] Inflection point: P

[0063] Critical point: C

[0064] Aperture: 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000

[0065] Apertures: 101, 201, 301, 302, 303, 401, 501, 502, 601, 801, 901, 902, 903, 1001, 1002, 1003

[0066] First lens: 110, 210, 310, 410, 510, 610, 710, 810, 910, 1010

[0067] Object-side surfaces: 111, 211, 311, 411, 511, 611, 711, 811, 911, 1011

[0068] Image side surface: 112, 212, 312, 412, 512, 612, 712, 812, 912, 1012

[0069] Second lens: 120, 220, 320, 420, 520, 620, 720, 820, 920, 1020

[0070] Object-side surfaces: 121, 221, 321, 421, 521, 621, 721, 821, 921, 1021

[0071] Image side surface: 122, 222, 322, 422, 522, 622, 722, 822, 922, 1022

[0072] Third lens: 130, 230, 330, 430, 530, 630, 730, 830, 930, 1030

[0073] Object-side surfaces: 131, 231, 331, 431, 531, 631, 731, 831, 931, 1031

[0074] Image side surface: 132, 232, 332, 432, 532, 632, 732, 832, 932, 1032

[0075] Fourth lens: 140, 240, 340, 440, 540, 640, 740, 840, 940, 1040

[0076] Object-side surfaces: 141, 241, 341, 441, 541, 641, 741, 841, 941, 1041

[0077] Side surface: 142, 242, 342, 442, 542, 642, 742, 842, 942, 1042

[0078] Fifth lens: 150, 250, 350, 450, 550, 650, 750, 850, 950, 1050

[0079] Object-side surfaces: 151, 251, 351, 451, 551, 651, 751, 851, 951, 1051

[0080] Image side surface: 152, 252, 352, 452, 552, 652, 752, 852, 952, 1052

[0081] Sixth lens: 160, 260, 360, 460, 560, 660, 760, 860, 960, 1060

[0082] Object-side surface: 161, 261, 361, 461, 561, 661, 761, 861, 961, 1061

[0083] Image side surface: 162, 262, 362, 462, 562, 662, 762, 862, 962, 1062

[0084] Seventh lens: 170, 270, 370, 470, 570, 670, 770, 870, 970, 1070

[0085] Object-side surfaces: 171, 271, 371, 471, 571, 671, 771, 871, 971, 1071

[0086] Image side surface: 172, 272, 372, 472, 572, 672, 772, 872, 972, 1072

[0087] Eighth lens: 180, 280, 380, 480, 580, 680, 780, 880, 980, 1080

[0088] Object-side surfaces: 181, 281, 381, 481, 581, 681, 781, 881, 981, 1081

[0089] Image side surface: 182, 282, 382, ​​482, 582, 682, 782, 882, 982, 1082

[0090] Infrared filtering elements: 190, 290, 390, 490, 590, 690, 790, 890, 990, 1090

[0091] Imaging planes: 195, 295, 395, 495, 595, 695, 795, 895, 995, 1095

[0092] Electronic photosensitive elements: 199, 299, 399, 499, 599, 699, 799, 899, 999, 1099

[0093] Y11: Maximum effective radius of the object-side surface of the first lens

[0094] Yc71: The perpendicular distance between the concave critical point of the object-side surface of the seventh lens and the optical axis.

[0095] Yc72: The perpendicular distance between the convex critical point of the image-side surface of the seventh lens and the optical axis.

[0096] Yc81: The perpendicular distance between the convex critical point on the object-side surface of the eighth lens and the optical axis. Detailed Implementation

[0097] The following detailed description of the features and advantages of the present invention in the embodiments is sufficient to enable any person skilled in the art to understand the technical content of the present invention and implement it accordingly. Based on the disclosure in this specification, the scope of protection of the claims, and the accompanying drawings, any person skilled in the art can easily understand the related objects and advantages of the present invention. The following embodiments further illustrate the points of the present invention in detail, but are not intended to limit the scope of the present invention in any way.

[0098] The camera lens assembly comprises eight lenses, and the total number of lenses in the camera lens assembly is eight. The eight lenses are arranged in the following order from the object side to the image side: first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, seventh lens, and eighth lens.

[0099] The first lens has positive refractive power; this helps to meet the requirements of miniaturization and short overall length of the camera lens assembly. The object-side surface of the first lens is convex near the optical axis; this helps to provide a sufficient angle of view and further reduce the overall size of the camera lens assembly.

[0100] The second lens has negative refractive power. This balances the aberrations produced by the first lens, thereby correcting spherical aberration and chromatic aberration.

[0101] The image-side surface of the seventh lens can be concave near the optical axis. This allows the principal point to be moved towards the object side, further shortening the back focal length and overall length.

[0102] The eighth lens has negative refractive power, and its object-side surface is concave near the optical axis. This helps to meet the requirements of miniaturization of camera lens assemblies and good aberration correction.

[0103] In the camera lens assembly disclosed in this invention, at least one lens has at least one inflection point on at least one of its object-side surface and image-side surface. This improves the lens's aberration correction capability, providing good image quality while achieving miniaturization. Please refer to... Figure 25 The diagram illustrates a partial inflection point P of a portion of a lens according to a third embodiment of the present invention. Figure 25 The inflection points of portions of the object-side surface, image-side surface, image-side surface, object-side surface, image-side surface, and image-side surface of the fifth lens, the sixth lens, the seventh lens, the seventh lens, the eighth lens, and the eighth lens in the third embodiment of the present invention are illustrated as examples. However, the object-side surface or image-side surface of the other lenses may also have inflection points.

[0104] The sixth lens's image-side surface may have a convex critical point at the off-axis location, the seventh lens's object-side surface may have a concave critical point at the off-axis location, and the eighth lens's object-side surface may also have a convex critical point at the off-axis location. This helps correct off-axis aberrations, thereby enhancing the resolution of peripheral images. Please refer to... Figure 25 The diagram illustrates a partial critical point C of a portion of a lens according to a third embodiment of the present invention. Figure 25 The critical points of the image-side surface of the sixth lens, the object-side surface of the seventh lens, the image-side surface of the seventh lens, and the object-side surface of the eighth lens in the third embodiment of the present invention are illustrated as an example. However, the object-side surface or image-side surface of the other lenses may also have critical points.

[0105] The first lens has a focal length of f1, and the eighth lens has a focal length of f8, satisfying the following condition: |f1 / f8| < 1.60. This ensures that the eighth lens has sufficient refractive power, allowing for miniaturization of the camera lens assembly while maintaining good image quality. It also satisfies the following condition: |f1 / f8| < 1.25.

[0106] The focal length of the camera lens group is f, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, and the focal length of the sixth lens is f6, which satisfy the following conditions: |f / f3| + |f / f4| + |f / f5| + |f / f6| < 1.65. Thereby, it is possible to avoid excessive difference in refractive power between each lens and over-correct the image, and avoid drastic changes in surface shape and difficulty in correcting ghost images. Among them, the following conditions can also be satisfied: 0.45 < |f / f3| + |f / f4| + |f / f5| + |f / f6| < 1.50. Among them, the following conditions can also be satisfied: 0.50 < |f / f3| + |f / f4| + |f / f5| + |f / f6| < 1.25.

[0107] The maximum imaging height of the camera lens group is ImgH (i.e., half of the total diagonal length of the effective sensing area of the electronic photosensitive element), and the distance from the image side surface of the eighth lens to the imaging surface on the optical axis is BL, which satisfy the following conditions: 4.0 < ImgH / BL < 20.0. Thereby, it is possible to further shorten the back focal length of the camera lens group and make the lens better utilize the limited space. Among them, the following conditions can also be satisfied: 6.0 < ImgH / BL < 12.0.

[0108] The focal length of the fifth lens is f5, and the radius of curvature of the object side surface of the fifth lens is R9, which can satisfy the following conditions: f5 / R9 < 2.80. Thereby, it is possible to ensure that the fifth lens has a suitable lens surface shape and refractive power to provide better aberration correction ability.

[0109] The focal length of the camera lens group is f, and the focal length of the second lens is f2, which can satisfy the following conditions: f / f2 < -0.45. Thereby, it is beneficial for the second lens to cooperate with the first lens to help correct various aberrations. Among them, the following conditions can also be satisfied: -1.25 < f / f2 < -0.50.

[0110] The focal length of the camera lens group is f, and the radius of curvature of the image side surface of the sixth lens is R12, which can satisfy the following conditions: -1.25 < f / R12. Thereby, it is possible to ensure that the shape of the sixth lens is not too curved and the refractive power is too strong to provide better aberration correction. Among them, the following conditions can also be satisfied: -0.75 < f / R12 < 3.0. Among them, the following conditions can also be satisfied: -0.30 < f / R12 < 2.50. Among them, the following conditions can also be satisfied: 0 ≤ f / R12.

[0111] The radius of curvature of the object-side surface of the eighth lens is R15, and the radius of curvature of the image-side surface of the eighth lens is R16, which can satisfy the following conditions: (R15 + R16) / (R15 - R16) < 0.30. Thereby, the surface shape of the eighth lens is beneficial to the configuration of a short back focus and a large image height for the camera lens group. Among them, the following conditions can also be satisfied: (R15 + R16) / (R15 - R16) < 0. Among them, the following conditions can also be satisfied: (R15 + R16) / (R15 - R16) < -0.25. Among them, the following conditions can also be satisfied: -2.0 < (R15 + R16) / (R15 - R16) < -0.50.

[0112] The vertical distance between the concave critical point of the object-side surface of the seventh lens and the optical axis is Yc71, and the vertical distance between the convex critical point of the image-side surface of the seventh lens and the optical axis is Yc72, which can satisfy the following conditions: 0.30 < Yc71 / Yc72 < 3.0. Thereby, it helps to correct off-axis aberration to improve the resolution of peripheral images under the requirements of miniaturization and short overall length of the camera lens group. Please refer to Figure 25 , a schematic diagram showing the parameters Yc71 and Yc72 in the third embodiment of the present invention is illustrated.

[0113] The distance on the optical axis from the object-side surface of the first lens to the imaging surface is TL, and the maximum imaging height of the camera lens group is ImgH, which can satisfy the following conditions: 0.50 < TL / ImgH < 1.30. Thereby, it helps to ensure a suitable balance between miniaturization and manufacturability of the camera lens group.

[0114] The F-number of the camera lens group is Fno, which can satisfy the following conditions: 0.8 < Fno < 2.05. Thereby, it helps to ensure sufficient light input, which is beneficial to improving image resolution. Among them, the following conditions can also be satisfied: 0.8 < Fno < 2.0.

[0115] The maximum imaging height of the camera lens group is ImgH, and the radius of curvature of the object-side surface of the first lens is R1, which can satisfy the following conditions: 1.75 < ImgH / R1. Thereby, it helps to form a configuration with a large image height. Among them, the following conditions can also be satisfied: 2.20 < ImgH / R1 < 4.0.

[0116] The sum of the interval distances on the optical axis of two adjacent lenses in the camera lens group is ΣAT, and the interval distance on the optical axis between the seventh lens and the eighth lens is T78, which can satisfy the following conditions: ΣAT / T78 < 3.0. Thereby, it can ensure sufficient space between the seventh lens and the eighth lens, which helps to configure suitable surface shapes for the seventh lens and the eighth lens.

[0117] The Abbe number of the first lens is V1, the Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the Abbe number of the sixth lens is V6, the Abbe number of the seventh lens is V7, the Abbe number of the eighth lens is V8, and the Abbe number of the i-th lens is Vi. The refractive index of the first lens is N1, the refractive index of the second lens is N2, the refractive index of the third lens is N3, the refractive index of the fourth lens is N4, the refractive index of the fifth lens is N5, the refractive index of the sixth lens is N6, the refractive index of the seventh lens is N7, the refractive index of the eighth lens is N8, and the refractive index of the i-th lens is Ni. At least one lens in the camera lens group may satisfy the following condition: 5.0 < Vi / Ni < 11.9, where i = 1, 2, 3, 4, 5, 6, 7, or 8. Thereby, it helps to strengthen the correction of chromatic aberration. Among them, at least two lenses in the camera lens group may also satisfy the following condition: 5.0 < Vi / Ni < 11.9, where i = 1, 2, 3, 4, 5, 6, 7, or 8. Among them, at least one lens in the camera lens group may also satisfy the following condition: 6.0 < Vi / Ni < 11.0, where i = 1, 2, 3, 4, 5, 6, 7, or 8.

[0118] The focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, and the focal length of the seventh lens is f7, which may satisfy the following conditions: |f1 / f2| < 1.0; |f1 / f3| < 1.0; |f1 / f4| < 1.0; |f1 / f5| < 1.0; |f1 / f6| < 1.0; and |f1 / f7| < 1.0. Thereby, it can ensure that the first lens has sufficient refractive power, helps to introduce the light rays around the entrance pupil, and enables the configuration of a large aperture.

[0119] The focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, the focal length of the seventh lens is f7, and the focal length of the eighth lens is f8, which may satisfy the following conditions: |f8 / f2| < 1.0; |f8 / f3| < 1.0; |f8 / f4| < 1.0; |f8 / f5| < 1.0; |f8 / f6| < 1.0; and |f8 / f7| < 1.0. Thereby, it can ensure that the eighth lens has sufficient refractive power to reduce the volume of the camera module.

[0120] The sum of the lens thicknesses of each lens on the optical axis in the camera lens group is ΣCT, and the sum of the spacing distances between each two adjacent lenses on the optical axis in the camera lens group is ΣAT, which can satisfy the following condition: 0.80 < ΣCT / ΣAT < 1.60. Thereby, the spatial utilization efficiency of the lenses can be enhanced, and it can be avoided that the lens arrangement is too crowded or the spacing is too large, resulting in poor space utilization. Among them, the following condition can also be satisfied: 0.90 < ΣCT / ΣAT < 1.50.

[0121] The maximum imaging height of the camera lens group is ImgH, and the maximum effective radius of the object side surface of the first lens is Y11, which can satisfy the following condition: 2.5 < ImgH / Y11 < 5.0. Thereby, it is helpful to form an arrangement with a large image height. Among them, the following condition can also be satisfied: 2.50 < ImgH / Y11 < 4.50. Among them, the following condition can also be satisfied: 3.0 < ImgH / Y11 < 4.50. Please refer to Figure 25 , a schematic diagram showing the parameter Y11 in the third embodiment of the present invention is illustrated.

[0122] The focal length of the camera lens group is f, the curvature radius of the object side surface of any lens in the camera lens group is Ro, the curvature radius of the image side surface of the any lens is Ri, and the number of lenses in the camera lens group that satisfy the condition of f / |Ro| + f / |Ri| < 0.8 is NLR_80, which can satisfy the following condition: 1 ≤ NLR_80. Thereby, it can be avoided that the refractive power difference between each lens is too large, resulting in excessive image correction, and it can also be avoided that the ghost image and other phenomena cannot be corrected due to too drastic changes in the mirror surface shape. Among them, the following condition can also be satisfied: 2 ≤ NLR_80. Among them, the following condition can also be satisfied: 3 ≤ NLR_80. Among them, the number of lenses in the camera lens group that satisfy the condition of f / |Ro| + f / |Ri| < 0.5 is NLR_50, which can satisfy the following condition: 1 ≤ NLR_50. Among them, the following condition can also be satisfied: 2 ≤ NLR_50.

[0123] The perpendicular distance between the convex critical point of the object side surface of the eighth lens and the optical axis is Yc81, and the maximum imaging height of the camera lens group is ImgH, which can satisfy the following condition: 0.20 < Yc81 / ImgH < 0.80. Thereby, it is helpful to meet the requirements of miniaturization and short overall length of the camera lens group, and it is also helpful to enhance the resolution of the peripheral image. Please refer to Figure 25 , a schematic diagram showing the parameter Yc81 in the third embodiment of the present invention is illustrated.

[0124] The distance between the first lens and the second lens on the optical axis is T12, the distance between the second lens and the third lens on the optical axis is T23, the distance between the third lens and the fourth lens on the optical axis is T34, the distance between the fourth lens and the fifth lens on the optical axis is T45, the distance between the fifth lens and the sixth lens on the optical axis is T56, the distance between the sixth lens and the seventh lens on the optical axis is T67, and the distance between the seventh lens and the eighth lens on the optical axis is T78, which can satisfy the following conditions: 1.0 < T78 / T12; 1.0 < T78 / T23; 1.0 < T78 / T34; 1.0 < T78 / T45; 1.0 < T78 / T56; and 1.0 < T78 / T67. Thereby, sufficient space can be ensured between the seventh lens and the eighth lens, which helps to configure the seventh lens and the eighth lens with a more suitable surface shape.

[0125] The number of lenses with an Abbe number less than 20 in the camera lens group is V20, which can satisfy the following conditions: 2 ≤ V20. Thereby, it helps to strengthen the correction of chromatic aberration. Among them, the number of lenses with an Abbe number less than 40 in the camera lens group is V40, which can satisfy the following conditions: 4 ≤ V40.

[0126] Each technical feature in the above camera lens group of the present invention can be combined and configured to achieve the corresponding effects.

[0127] In the camera lens group disclosed in the present invention, the material of the lens can be glass or plastic. If the material of the lens is glass, the freedom of configuring the refractive power of the camera lens group can be increased, and the influence of external environmental temperature changes on imaging can be reduced, and the glass lens can be made by techniques such as grinding or molding. If the lens material is plastic, the production cost can be effectively reduced. In addition, a spherical or aspherical surface (ASP) can be provided on the lens surface. The spherical lens can reduce the manufacturing difficulty, and if an aspherical surface is provided on the lens surface, more control variables can be obtained thereby to reduce aberration, reduce the number of lenses, and effectively reduce the total length of the camera lens group of the present invention. Further, the aspherical surface can be made by methods such as plastic injection molding or molding of glass lenses.

[0128] In the camera lens group disclosed in the present invention, if the lens surface is aspherical, it means that all or a part of the optical effective area of the lens surface is aspherical.

[0129] In the camera lens assembly disclosed in this invention, additives can be selectively added to any (or more) lens materials to change the lens's transmittance for specific wavelengths of light, thereby reducing stray light and color shift. For example, the additives may have the function of filtering out light in the 600 nm to 800 nm wavelength range in the system to help reduce excess red or infrared light; or they may filter out light in the 350 nm to 450 nm wavelength range to reduce excess blue or ultraviolet light. Therefore, the additives can prevent specific wavelengths of light from interfering with imaging. Furthermore, the additives can be uniformly mixed into plastic and manufactured into lenses using injection molding technology.

[0130] In the camera lens assembly disclosed in this invention, if the lens surface is convex and the position of the convex surface is not defined, it means that the convex surface can be located near the optical axis of the lens surface; if the lens surface is concave and the position of the concave surface is not defined, it means that the concave surface can be located near the optical axis of the lens surface. If the refractive power or focal length of the lens is not defined in its region, it means that the refractive power or focal length of the lens can be the refractive power or focal length of the lens near the optical axis.

[0131] In the camera lens assembly disclosed in this invention, the inflection point of the lens surface refers to the boundary point where the curvature of the lens surface changes from positive to negative. The critical point of the lens surface refers to the point of tangency on the tangent line between a plane perpendicular to the optical axis and the lens surface, and the critical point is not located on the optical axis.

[0132] In the camera lens assembly disclosed in this invention, the imaging surface of the camera lens assembly can be a plane or a curved surface with any curvature, depending on the corresponding electronic photosensitive element, especially a curved surface with a concave surface facing the object side.

[0133] In the camera lens assembly disclosed in this invention, one or more imaging correction elements (such as planar elements) can be selectively arranged between the lens closest to the imaging plane and the imaging plane to achieve the effect of correcting image curvature (such as image distortion). The optical properties of this imaging correction element, such as curvature, thickness, refractive index, position, and surface type (convex or concave, spherical or aspherical, diffractive surface, and Fresnel surface, etc.), can be adjusted according to the requirements of the imaging device. Generally, a preferred configuration of the imaging correction element is to place a thin plano-concave element with a concave surface in the object-side direction near the imaging plane.

[0134] The camera lens assembly disclosed in this invention may be provided with at least one aperture stop, which may be located in front of the first lens, between the lenses, or after the last lens. The aperture stop may be of the type such as a glare stop or a field stop, which can be used to reduce stray light and help improve image quality.

[0135] In the camera lens assembly disclosed in this invention, the aperture can be configured as a front aperture or a center aperture. A front aperture means the aperture is positioned between the subject and the first lens, while a center aperture means the aperture is positioned between the first lens and the imaging plane. A front aperture allows for a longer distance between the exit pupil and the imaging plane, resulting in a telecentric effect and increasing the efficiency of image reception by the CCD or CMOS sensor. A center aperture helps to expand the field of view of the camera lens assembly.

[0136] This invention may appropriately incorporate a variable aperture element, which can be a mechanical component or a light-regulating element, and whose aperture size and shape can be controlled electrically or by electrical signals. The mechanical component may include movable parts such as a blade assembly or a shielding plate; the light-regulating element may include a filter element, an electrochromic material, a liquid crystal layer, or other masking material. This variable aperture element can enhance image adjustment capabilities by controlling the amount of light entering the image or the exposure time. Furthermore, this variable aperture element can also be the aperture of this invention, allowing image quality, such as depth of field or exposure speed, to be adjusted by changing the aperture value.

[0137] Based on the above implementation methods, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0138] <First Embodiment>

[0139] Please refer to Figures 1 to 2 ,in Figure 1 A schematic diagram of an image-capturing device according to a first embodiment of the present invention is shown. Figure 2 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the first embodiment. Figure 1 As can be seen, the image capturing device includes a camera lens assembly (unlabeled) and an electronic image sensor 199. The camera lens assembly, from the object side to the image side, includes, in sequence, an aperture 100, a first lens 110, a second lens 120, a third lens 130, an aperture stop 101, a fourth lens 140, a fifth lens 150, a sixth lens 160, a seventh lens 170, an eighth lens 180, an infrared-cut filter 190, and an imaging plane 195. The electronic image sensor 199 is disposed on the imaging plane 195. The camera lens assembly includes eight lenses (110, 120, 130, 140, 150, 160, 170, 180), and there are no other interposed lenses between the lenses.

[0140] The first lens 110 has positive refractive power and is made of plastic. Its object-side surface 111 is convex near the optical axis, and its image-side surface 112 is concave near the optical axis. Both of its surfaces are aspherical.

[0141] The second lens 120 has negative refractive power and is made of plastic. Its object-side surface 121 is convex near the optical axis, and its image-side surface 122 is concave near the optical axis. Both surfaces are aspherical, and its image-side surface 122 has at least one inflection point.

[0142] The third lens 130 has positive refractive power and is made of plastic. Its object-side surface 131 is convex near the optical axis, and its image-side surface 132 is concave near the optical axis. Both of its surfaces are aspherical.

[0143] The fourth lens 140 has negative refractive power and is made of plastic. Its object-side surface 141 is convex near the optical axis, and its image-side surface 142 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 141 has at least one inflection point, and its image-side surface 142 has at least one inflection point.

[0144] The fifth lens 150 has positive refractive power and is made of plastic. Its object-side surface 151 is convex near the optical axis, and its image-side surface 152 is convex near the optical axis. Both surfaces are aspherical, and its object-side surface 151 has at least one inflection point.

[0145] The sixth lens 160 has negative refractive power and is made of plastic. Its object-side surface 161 is convex near the optical axis, and its image-side surface 162 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 161 has at least one inflection point, its image-side surface 162 has at least one inflection point, and its image-side surface 162 has a convex critical point off-axis.

[0146] The seventh lens 170 has negative refractive power and is made of plastic. Its object-side surface 171 is convex near the optical axis, and its image-side surface 172 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 171 has at least one inflection point, its image-side surface 172 has at least one inflection point, its object-side surface 171 has a concave critical point off-axis, and its image-side surface 172 has a convex critical point off-axis.

[0147] The eighth lens 180 has negative refractive power and is made of plastic. Its object-side surface 181 is concave near the optical axis, and its image-side surface 182 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 181 has at least one inflection point, and its image-side surface 182 has at least one inflection point.

[0148] The infrared filter element 190 is made of glass and is located between the eighth lens 180 and the imaging surface 195. It does not affect the focal length of the camera lens assembly.

[0149] The equations for the aspherical surfaces of the above lenses are expressed as follows:

[0150]

[0151] X: The distance between a point on the aspherical surface at a distance Y from the optical axis and the tangent plane at the intersection point of the aspherical surface and the optical axis.

[0152] Y: The perpendicular distance between a point on the aspherical curve and the optical axis;

[0153] R: Radius of curvature;

[0154] k: cone coefficient; and

[0155] Ai: The i-th order aspherical coefficient.

[0156] In the camera lens assembly of the first embodiment, the focal length of the camera lens assembly is f, the aperture value of the camera lens assembly is Fno, and half of the maximum field of view in the camera lens assembly is HFOV, with the following values: f = 8.30 mm, Fno = 1.89, HFOV = 42.9 degrees.

[0157] The sum of the lens thicknesses of all lenses in the camera lens assembly along the optical axis is ΣCT, and the sum of the distances between any two adjacent lenses along the optical axis is ΣAT, which satisfies the following condition: ΣCT / ΣAT=1.56. In this embodiment, the distance between two adjacent lenses along the optical axis refers to the distance between two adjacent mirror surfaces of two adjacent lenses along the optical axis; ΣCT is the sum of the thicknesses CT1 of the first lens 110 along the optical axis, CT2 of the second lens 120 along the optical axis, CT3 of the third lens 130 along the optical axis, CT4 of the fourth lens 140 along the optical axis, CT5 of the fifth lens 150 along the optical axis, CT6 of the sixth lens 160 along the optical axis, CT7 of the seventh lens 170 along the optical axis, and CT8 of the eighth lens 180 along the optical axis (ΣCT=CT1+CT2+CT3+CT4+CT5+CT6+CT7+CT8). Furthermore, the optical axis spacing between the first lens 110 and the second lens 120 is T12; the optical axis spacing between the second lens 120 and the third lens 130 is T23; the optical axis spacing between the third lens 130 and the fourth lens 140 is T34; the optical axis spacing between the fourth lens 140 and the fifth lens 150 is T45; the optical axis spacing between the fifth lens 150 and the sixth lens 160 is T56; and the optical axis spacing between the sixth lens 160 and the seventh lens 170 is... The optical axis spacing is T67, and the optical axis spacing between the seventh lens 170 and the eighth lens 180 is T78; ΣAT is the sum of the optical axis spacing between any two adjacent lenses among the first lens 110, second lens 120, third lens 130, fourth lens 140, fifth lens 150, sixth lens 160, seventh lens 170, and eighth lens 180 (ΣAT=T12+T23+T34+T45+T56+T67+T78). The following conditions are also satisfied: T78 / T12=13.87; T78 / T23=2.53; T78 / T34=1.40; T78 / T45=2.27; T78 / T56=0.82; T78 / T67=1.57; and ΣAT / T78=4.48.

[0158] The maximum imaging height of the camera lens assembly is ImgH, and the maximum effective radius of the object-side surface 111 of the first lens is Y11, which satisfies the following condition: ImgH / Y11=3.61.

[0159] The radius of curvature of the object-side surface 181 of the eighth lens is R15, and the radius of curvature of the image-side surface 182 of the eighth lens is R16, which satisfies the following condition: (R15+R16) / (R15-R16)=0.57.

[0160] The focal length of the first lens 110 is f1, and the focal length of the eighth lens 180 is f8, which satisfies the following condition: |f1 / f8|=0.66.

[0161] The focal length of the camera lens group is f, the focal length of the third lens 130 is f3, the focal length of the fourth lens 140 is f4, the focal length of the fifth lens 150 is f5, and the focal length of the sixth lens 160 is f6. They satisfy the following condition: |f / f3|+|f / f4|+|f / f5|+|f / f6|=0.66.

[0162] The maximum imaging height of the camera lens group is ImgH, and the distance from the image-side surface 182 of the eighth lens to the imaging plane 195 on the optical axis is BL, which satisfies the following condition: ImgH / BL=7.22.

[0163] The first lens 110 has a focal length of f1, the second lens 120 has a focal length of f2, the third lens 130 has a focal length of f3, the fourth lens 140 has a focal length of f4, the fifth lens 150 has a focal length of f5, the sixth lens 160 has a focal length of f6, and the seventh lens 170 has a focal length of f7. They satisfy the following conditions: |f1 / f2|=0.42; |f1 / f3|=0.16; |f1 / f4|=0.11; |f1 / f5|=0.25; |f1 / f6|=0.02; and |f1 / f7|=0.02.

[0164] The focal length of the fifth lens 150 is f5, and the radius of curvature of the object-side surface 151 of the fifth lens is R9, which satisfies the following condition: f5 / R9=0.12.

[0165] The second lens 120 has a focal length of f2, the third lens 130 has a focal length of f3, the fourth lens 140 has a focal length of f4, the fifth lens 150 has a focal length of f5, the sixth lens 160 has a focal length of f6, the seventh lens 170 has a focal length of f7, and the eighth lens 180 has a focal length of f8. These lenses satisfy the following conditions: |f8 / f2|=0.64; |f8 / f3|=0.24; |f8 / f4|=0.17; |f8 / f5|=0.38; |f8 / f6|=0.04; and |f8 / f7|=0.04.

[0166] The focal length of the camera lens group is f, and the focal length of the second lens 120 is f2, which satisfies the following condition: f / f2=-0.51.

[0167] The focal length of the camera lens group is f, and the radius of curvature of the image-side surface 162 of the sixth lens is R12, which satisfies the following condition: f / R12=0.40.

[0168] The distance on the optical axis from the object-side surface 111 of the first lens to the imaging plane 195 is TL, and the maximum imaging height of the camera lens group is ImgH, which satisfies the following condition: TL / ImgH=1.20.

[0169] The maximum imaging height of the camera lens assembly is ImgH, and the radius of curvature of the object-side surface 111 of the first lens is R1, which satisfies the following condition: ImgH / R1=2.69.

[0170] The Abbe number of the first lens 110 is V1, and the refractive index of the first lens 110 is N1, which satisfies the following condition: V1 / N1 = 36.30.

[0171] The Abbe number of the second lens 120 is V2, and the refractive index of the second lens 120 is N2, which satisfies the following condition: V2 / N2 = 13.01.

[0172] The Abbe number of the third lens 130 is V3, and the refractive index of the third lens 130 is N3, which satisfies the following condition: V3 / N3 = 36.30.

[0173] The Abbe number of the fourth lens 140 is V4, and the refractive index of the fourth lens 140 is N4, which satisfies the following condition: V4 / N4 = 11.65.

[0174] The Abbe number of the fifth lens 150 is V5, and the refractive index of the fifth lens 150 is N5, which satisfies the following condition: V5 / N5 = 36.30.

[0175] The Abbe number of the sixth lens 160 is V6, and the refractive index of the sixth lens 160 is N6, which satisfies the following condition: V6 / N6 = 16.57.

[0176] The Abbe number of the seventh lens 170 is V7, and the refractive index of the seventh lens 170 is N7, which satisfies the following condition: V7 / N7 = 23.91.

[0177] The Abbe number of the eighth lens 180 is V8, and the refractive index of the eighth lens 180 is N8, which satisfies the following condition: V8 / N8 = 36.46.

[0178] The number of lenses with an Abbe number less than 20 in the camera lens group is V20, which satisfies the following condition: V20 = 1.

[0179] The number of lenses with an Abbe number less than 40 in the camera lens group is V40, which satisfies the following condition: V40 = 4.

[0180] The focal length of the camera lens group is f, the radius of curvature of the object-side surface of any lens in the camera lens group is Ro, the radius of curvature of the image-side surface of any lens is Ri, and the number of lenses in the camera lens group that satisfy the condition f / |Ro|+f / |Ri|<0.8 is NLR_80, which satisfies the following condition: NLR_80=3.

[0181] The focal length of the camera lens group is f, the radius of curvature of the object-side surface of any lens in the camera lens group is Ro, the radius of curvature of the image-side surface of any lens is Ri, and the number of lenses in the camera lens group that satisfy the condition f / |Ro|+f / |Ri|<0.5 is NLR_50, which satisfies the following condition: NLR_50=1.

[0182] The perpendicular distance between the concave critical point of the object-side surface 171 of the seventh lens and the optical axis is Yc71, which satisfies the following condition: Yc71 = 1.34 mm.

[0183] The vertical distance between the convex critical point of the image-side surface 172 of the seventh lens and the optical axis is Yc72, which satisfies the following condition: Yc72 = 1.60 mm.

[0184] The vertical distance between the concave critical point of the object-side surface 171 of the seventh lens and the optical axis is Yc71, and the vertical distance between the convex critical point of the image-side surface 172 of the seventh lens and the optical axis is Yc72, which satisfies the following condition: Yc71 / Yc72=0.83.

[0185] Please refer to Table 1 and Table 2 below.

[0186]

[0187]

[0188]

[0189]

[0190] Table 1 is... Figure 1 The first embodiment provides detailed structural data, where the units for radius of curvature, thickness, and focal length are millimeters (mm), and surfaces 0 to 21 sequentially represent the surfaces from the object side to the image side. Table 2 shows the aspherical data in the first embodiment, where k is the cone coefficient in the aspherical curve equation, and A4 to A20 represent the 4th to 20th order aspherical coefficients of each surface. Furthermore, the tables for the following embodiments are corresponding schematic diagrams and aberration curves for each embodiment. The definitions of the data in the tables are the same as those in Tables 1 and 2 of the first embodiment, and will not be repeated here.

[0191] <Second Embodiment>

[0192] Please refer to Figures 3 to 4 ,in Figure 3 A schematic diagram of an image-capturing device according to a second embodiment of the present invention is shown. Figure 4 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the second embodiment. Figure 3 As can be seen, the image capturing device includes a camera lens assembly (unlabeled) and an electronic image sensor 299. The camera lens assembly, from the object side to the image side, includes, in sequence, an aperture 200, a first lens 210, a second lens 220, a third lens 230, an aperture stop 201, a fourth lens 240, a fifth lens 250, a sixth lens 260, a seventh lens 270, an eighth lens 280, an infrared filter element 290, and an imaging surface 295. The electronic image sensor 299 is disposed on the imaging surface 295. The camera lens assembly includes eight lenses (210, 220, 230, 240, 250, 260, 270, 280), and there are no other interposed lenses between the lenses.

[0193] The first lens 210 has positive refractive power and is made of plastic. Its object-side surface 211 is convex near the optical axis, and its image-side surface 212 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 211 has at least one inflection point, and its image-side surface 212 has at least one inflection point.

[0194] The second lens 220 has negative refractive power and is made of plastic. Its object-side surface 221 is convex near the optical axis, and its image-side surface 222 is concave near the optical axis. Both surfaces are aspherical, and its image-side surface 222 has at least one inflection point.

[0195] The third lens 230 has positive refractive power and is made of plastic. Its object-side surface 231 is convex near the optical axis, and its image-side surface 232 is convex near the optical axis. Both surfaces are aspherical, and its image-side surface 232 has at least one inflection point.

[0196] The fourth lens 240 has negative refractive power and is made of plastic. Its object-side surface 241 is concave near the optical axis, and its image-side surface 242 is convex near the optical axis. Both surfaces are aspherical, and its image-side surface 242 has at least one inflection point.

[0197] The fifth lens 250 has positive refractive power and is made of plastic. Its object-side surface 251 is convex near the optical axis, and its image-side surface 252 is convex near the optical axis. Both surfaces are aspherical, and its object-side surface 251 has at least one inflection point.

[0198] The sixth lens 260 has positive refractive power and is made of plastic. Its object-side surface 261 is convex near the optical axis, and its image-side surface 262 is convex near the optical axis. Both surfaces are aspherical. Its object-side surface 261 has at least one inflection point, and its image-side surface 262 has at least one inflection point.

[0199] The seventh lens 270 has negative refractive power and is made of plastic. Its object-side surface 271 is convex near the optical axis, and its image-side surface 272 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 271 has at least one inflection point, its image-side surface 272 has at least one inflection point, its object-side surface 271 has a concave critical point off-axis, and its image-side surface 272 has a convex critical point off-axis.

[0200] The eighth lens 280 has negative refractive power and is made of plastic. Its object-side surface 281 is concave near the optical axis, and its image-side surface 282 is convex near the optical axis. Both surfaces are aspherical. Its object-side surface 281 has at least one inflection point, and its image-side surface 282 has at least one inflection point.

[0201] The infrared filter element 290 is made of glass and is located between the eighth lens 280 and the imaging surface 295, without affecting the focal length of the camera lens group.

[0202] Please refer to Table 3 and Table 4 below.

[0203]

[0204]

[0205]

[0206]

[0207] In the second embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the above embodiments and will not be repeated here.

[0208] Second Embodiment

[0209]

[0210] <Third Embodiment>

[0211] Please refer to Figures 5 to 6 ,in Figure 5 A schematic diagram of an image-capturing device according to a third embodiment of the present invention is shown. Figure 6 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the third embodiment. Figure 5As can be seen, the image capturing device includes a camera lens assembly (unlabeled) and an electronic image sensor 399. The camera lens assembly, from the object side to the image side, includes, in sequence, an aperture 300, a first lens 310, a second lens 320, an aperture stop 301, a third lens 330, an aperture stop 302, a fourth lens 340, a fifth lens 350, a sixth lens 360, a seventh lens 370, an aperture stop 303, an eighth lens 380, an infrared filter element 390, and an imaging surface 395. The electronic image sensor 399 is disposed on the imaging surface 395. The camera lens assembly includes eight lenses (310, 320, 330, 340, 350, 360, 370, 380), and there are no other interposed lenses between the lenses.

[0212] The first lens 310 has positive refractive power and is made of plastic. Its object-side surface 311 is convex near the optical axis, and its image-side surface 312 is concave near the optical axis. Both surfaces are aspherical, and its image-side surface 312 has at least one inflection point.

[0213] The second lens 320 has negative refractive power and is made of plastic. Its object-side surface 321 is convex near the optical axis, and its image-side surface 322 is concave near the optical axis. Both of its surfaces are aspherical.

[0214] The third lens 330 has positive refractive power and is made of plastic. Its object-side surface 331 is convex near the optical axis, and its image-side surface 332 is concave near the optical axis. Both of its surfaces are aspherical.

[0215] The fourth lens 340 has negative refractive power and is made of plastic. Its object-side surface 341 is convex near the optical axis, and its image-side surface 342 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 341 has at least one inflection point, and its image-side surface 342 has at least one inflection point.

[0216] The fifth lens 350 has positive refractive power and is made of plastic. Its object-side surface 351 is concave near the optical axis, and its image-side surface 352 is convex near the optical axis. Both surfaces are aspherical. Its object-side surface 351 has at least one inflection point, and its image-side surface 352 has at least one inflection point.

[0217] The sixth lens 360 has negative refractive power and is made of plastic. Its object-side surface 361 is concave near the optical axis, and its image-side surface 362 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 361 has at least one inflection point, its image-side surface 362 has at least one inflection point, and its image-side surface 362 has a convex critical point off-axis.

[0218] The seventh lens 370 has positive refractive power and is made of plastic. Its object-side surface 371 is convex near the optical axis, and its image-side surface 372 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 371 has at least one inflection point, its image-side surface 372 has at least one inflection point, its object-side surface 371 has a concave critical point off-axis, and its image-side surface 372 has a convex critical point off-axis.

[0219] The eighth lens 380 has negative refractive power and is made of plastic. Its object-side surface 381 is concave near the optical axis, and its image-side surface 382 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 381 has at least one inflection point, its image-side surface 382 has at least one inflection point, and its object-side surface 381 has a convex critical point off-axis.

[0220] The infrared filter element 390 is made of glass and is located between the eighth lens 380 and the imaging surface 395. It does not affect the focal length of the camera lens group.

[0221] The perpendicular distance between the convex critical point of the object-side surface 381 of the eighth lens and the optical axis is Yc81, which satisfies the following condition: Yc81 = 5.27 mm.

[0222] The vertical distance between the convex critical point of the object-side surface 381 of the eighth lens and the optical axis is Yc81, and the maximum imaging height of the camera lens group is ImgH, which satisfies the following condition: Yc81 / ImgH=0.66.

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

[0224]

[0225]

[0226]

[0227]

[0228] In the third embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the above embodiments, except for the parameter Yc81 mentioned in this embodiment, and will not be repeated here.

[0229]

[0230] <Fourth Embodiment>

[0231] Please refer to Figures 7 to 8 ,in Figure 7 A schematic diagram of an image-capturing device according to a fourth embodiment of the present invention is shown. Figure 8 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fourth embodiment. Figure 7 It is known that the image capturing device includes a camera lens assembly (unlabeled) and an electronic image sensor 499. The camera lens assembly, from the object side to the image side, includes, in sequence, an aperture 400, a first lens 410, a second lens 420, a third lens 430, an aperture stop 401, a fourth lens 440, a fifth lens 450, a sixth lens 460, a seventh lens 470, an eighth lens 480, an infrared filter element 490, and an imaging surface 495. The electronic image sensor 499 is disposed on the imaging surface 495. The camera lens assembly includes eight lenses (410, 420, 430, 440, 450, 460, 470, 480), and there are no other interposed lenses between the lenses.

[0232] The first lens 410 has positive refractive power and is made of plastic. Its object-side surface 411 is convex near the optical axis, and its image-side surface 412 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 411 has at least one inflection point, and its image-side surface 412 has at least one inflection point.

[0233] The second lens 420 has negative refractive power and is made of plastic. Its object-side surface 421 is convex near the optical axis, and its image-side surface 422 is concave near the optical axis. Both surfaces are aspherical, and its image-side surface 422 has at least one inflection point.

[0234] The third lens 430 has positive refractive power and is made of plastic. Its object-side surface 431 is convex near the optical axis, and its image-side surface 432 is concave near the optical axis. Both of its surfaces are aspherical.

[0235] The fourth lens 440 has negative refractive power and is made of plastic. Its object-side surface 441 is convex near the optical axis, and its image-side surface 442 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 441 has at least one inflection point, and its image-side surface 442 has at least one inflection point.

[0236] The fifth lens 450 has positive refractive power and is made of plastic. Its object-side surface 451 is convex near the optical axis, and its image-side surface 452 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 451 has at least one inflection point, and its image-side surface 452 has at least one inflection point.

[0237] The sixth lens 460 has positive refractive power and is made of plastic. Its object-side surface 461 is convex near the optical axis, and its image-side surface 462 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 461 has at least one inflection point, its image-side surface 462 has at least one inflection point, and its image-side surface 462 has a convex critical point off-axis.

[0238] The seventh lens 470 has positive refractive power and is made of plastic. Its object-side surface 471 is convex near the optical axis, and its image-side surface 472 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 471 has at least one inflection point, its image-side surface 472 has at least one inflection point, its object-side surface 471 has a concave critical point off-axis, and its image-side surface 472 has a convex critical point off-axis.

[0239] The eighth lens 480 has negative refractive power and is made of plastic. Its object-side surface 481 is concave near the optical axis, and its image-side surface 482 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 481 has at least one inflection point, its image-side surface 482 has at least one inflection point, and its object-side surface 481 has a convex critical point off-axis.

[0240] The infrared filter element 490 is made of glass and is located between the eighth lens 480 and the imaging surface 495. It does not affect the focal length of the camera lens group.

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

[0242]

[0243]

[0244]

[0245]

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

[0247]

[0248] <Fifth Embodiment>

[0249] Please refer to Figures 9 to 10 ,in Figure 9 A schematic diagram of an image-capturing device according to a fifth embodiment of the present invention is shown. Figure 10 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fifth embodiment. Figure 9As can be seen, the image capturing device includes a camera lens assembly (unlabeled) and an electronic image sensor 599. The camera lens assembly, from the object side to the image side, includes, in sequence, an aperture 500, a first lens 510, a second lens 520, a third lens 530, an aperture stop 501, a fourth lens 540, a fifth lens 550, a sixth lens 560, an aperture stop 502, a seventh lens 570, an eighth lens 580, an infrared filter element 590, and an imaging surface 595. The electronic image sensor 599 is disposed on the imaging surface 595. The camera lens assembly includes eight lenses (510, 520, 530, 540, 550, 560, 570, 580), and there are no other interposed lenses between the lenses.

[0250] The first lens 510 has positive refractive power and is made of plastic. Its object-side surface 511 is convex near the optical axis, and its image-side surface 512 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 511 has at least one inflection point, and its image-side surface 512 has at least one inflection point.

[0251] The second lens 520 has negative refractive power and is made of plastic. Its object-side surface 521 is concave near the optical axis, and its image-side surface 522 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 521 has at least one inflection point, and its image-side surface 522 has at least one inflection point.

[0252] The third lens 530 has positive refractive power and is made of plastic. Its object-side surface 531 is convex near the optical axis, and its image-side surface 532 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 531 has at least one inflection point, and its image-side surface 532 has at least one inflection point.

[0253] The fourth lens 540 has positive refractive power and is made of plastic. Its object-side surface 541 is convex near the optical axis, and its image-side surface 542 is convex near the optical axis. Both surfaces are aspherical. Its object-side surface 541 has at least one inflection point, and its image-side surface 542 has at least one inflection point.

[0254] The fifth lens 550 has negative refractive power and is made of plastic. Its object-side surface 551 is convex near the optical axis, and its image-side surface 552 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 551 has at least one inflection point, and its image-side surface 552 has at least one inflection point.

[0255] The sixth lens 560 has negative refractive power and is made of plastic. Its object-side surface 561 is convex near the optical axis, and its image-side surface 562 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 561 has at least one inflection point, its image-side surface 562 has at least one inflection point, and its image-side surface 562 has a convex critical point off-axis.

[0256] The seventh lens 570 has positive refractive power and is made of plastic. Its object-side surface 571 is convex near the optical axis, and its image-side surface 572 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 571 has at least one inflection point, its image-side surface 572 has at least one inflection point, its object-side surface 571 has a concave critical point off-axis, and its image-side surface 572 has a convex critical point off-axis.

[0257] The eighth lens 580 has negative refractive power and is made of plastic. Its object-side surface 581 is concave near the optical axis, and its image-side surface 582 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 581 has at least one inflection point, its image-side surface 582 has at least one inflection point, and its object-side surface 581 has a convex critical point off-axis.

[0258] The infrared filter element 590 is made of glass and is located between the eighth lens 580 and the imaging surface 595. It does not affect the focal length of the camera lens group.

[0259] Please refer to Tables 9 and 10 below.

[0260]

[0261]

[0262]

[0263]

[0264] In the fifth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the above embodiments and will not be repeated here.

[0265]

[0266] <Sixth Embodiment>

[0267] Please refer to Figures 11 to 12 ,in Figure 11 A schematic diagram of an image-capturing device according to a sixth embodiment of the present invention is shown. Figure 12 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the sixth embodiment. Figure 11As can be seen, the image capturing device includes a camera lens assembly (unlabeled) and an electronic image sensor 699. The camera lens assembly, from the object side to the image side, includes, in sequence, an aperture 600, a first lens 610, a second lens 620, a third lens 630, an aperture stop 601, a fourth lens 640, a fifth lens 650, a sixth lens 660, a seventh lens 670, an eighth lens 680, an infrared filter element 690, and an imaging surface 695. The electronic image sensor 699 is disposed on the imaging surface 695. The camera lens assembly includes eight lenses (610, 620, 630, 640, 650, 660, 670, 680), and there are no other interposed lenses between the lenses.

[0268] The first lens 610 has positive refractive power and is made of plastic. Its object-side surface 611 is convex near the optical axis, and its image-side surface 612 is concave near the optical axis. Both surfaces are aspherical, and its object-side surface 611 has at least one inflection point.

[0269] The second lens 620 has negative refractive power and is made of plastic. Its object-side surface 621 is convex near the optical axis, and its image-side surface 622 is concave near the optical axis. Both of its surfaces are aspherical.

[0270] The third lens 630 has positive refractive power and is made of plastic. Its object-side surface 631 is convex near the optical axis, and its image-side surface 632 is concave near the optical axis. Both of its surfaces are aspherical.

[0271] The fourth lens 640 has negative refractive power and is made of plastic. Its object-side surface 641 is convex near the optical axis, and its image-side surface 642 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 641 has at least one inflection point, and its image-side surface 642 has at least one inflection point.

[0272] The fifth lens 650 has positive refractive power and is made of plastic. Its object-side surface 651 is concave near the optical axis, and its image-side surface 652 is convex near the optical axis. Both surfaces are aspherical. Its object-side surface 651 has at least one inflection point, and its image-side surface 652 has at least one inflection point.

[0273] The sixth lens 660 has negative refractive power and is made of plastic. Its object-side surface 661 is convex near the optical axis, and its image-side surface 662 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 661 has at least one inflection point, its image-side surface 662 has at least one inflection point, and its image-side surface 662 has a convex critical point off-axis.

[0274] The seventh lens 670 has positive refractive power and is made of plastic. Its object-side surface 671 is convex near the optical axis, and its image-side surface 672 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 671 has at least one inflection point, its image-side surface 672 has at least one inflection point, its object-side surface 671 has a concave critical point off-axis, and its image-side surface 672 has a convex critical point off-axis.

[0275] The eighth lens 680 has negative refractive power and is made of plastic. Its object-side surface 681 is concave near the optical axis, and its image-side surface 682 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 681 has at least one inflection point, its image-side surface 682 has at least one inflection point, and its object-side surface 681 has a convex critical point off-axis.

[0276] The infrared filter element 690 is made of glass and is located between the eighth lens 680 and the imaging surface 695. It does not affect the focal length of the camera lens group.

[0277] Please refer to Table 11 and Table 12 below.

[0278]

[0279]

[0280]

[0281]

[0282] In the sixth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the above embodiments and will not be repeated here.

[0283]

[0284] <Seventh Embodiment>

[0285] Please refer to Figures 13 to 14 ,in Figure 13 A schematic diagram of an image-capturing device according to a seventh embodiment of the present invention is shown. Figure 14 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the seventh embodiment. Figure 13As can be seen, the image capturing device includes a camera lens assembly (unlabeled) and an electronic image sensor 799. The camera lens assembly, from the object side to the image side, includes, in sequence, an aperture 700, a first lens 710, a second lens 720, a third lens 730, a fourth lens 740, a fifth lens 750, a sixth lens 760, a seventh lens 770, an eighth lens 780, an infrared filter element 790, and an imaging surface 795. The electronic image sensor 799 is disposed on the imaging surface 795. The camera lens assembly includes eight lenses (710, 720, 730, 740, 750, 760, 770, 780), and there are no other interposed lenses between the lenses.

[0286] The first lens 710 has positive refractive power and is made of plastic. Its object-side surface 711 is convex near the optical axis, and its image-side surface 712 is concave near the optical axis. Both surfaces are aspherical, and its image-side surface 712 has at least one inflection point.

[0287] The second lens 720 has negative refractive power and is made of plastic. Its object-side surface 721 is convex near the optical axis, and its image-side surface 722 is concave near the optical axis. Both surfaces are aspherical, and its object-side surface 721 has at least one inflection point.

[0288] The third lens 730 has negative refractive power and is made of plastic. Its object-side surface 731 is convex near the optical axis, and its image-side surface 732 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 731 has at least one inflection point, and its image-side surface 732 has at least one inflection point.

[0289] The fourth lens 740 has positive refractive power and is made of plastic. Its object-side surface 741 is convex near the optical axis, and its image-side surface 742 is convex near the optical axis. Both surfaces are aspherical, and its object-side surface 741 has at least one inflection point.

[0290] The fifth lens 750 has positive refractive power and is made of plastic. Its object-side surface 751 is concave near the optical axis, and its image-side surface 752 is convex near the optical axis. Both surfaces are aspherical. Its object-side surface 751 has at least one inflection point, and its image-side surface 752 has at least one inflection point.

[0291] The sixth lens 760 has negative refractive power and is made of plastic. Its object-side surface 761 is convex near the optical axis, and its image-side surface 762 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 761 has at least one inflection point, its image-side surface 762 has at least one inflection point, and its image-side surface 762 has a convex critical point off-axis.

[0292] The seventh lens 770 has positive refractive power and is made of plastic. Its object-side surface 771 is convex near the optical axis, and its image-side surface 772 is convex near the optical axis. Both surfaces are aspherical. Its object-side surface 771 has at least one inflection point, and its image-side surface 772 has at least one inflection point. Its object-side surface 771 has a concave critical point off-axis, and its image-side surface 772 has a convex critical point off-axis.

[0293] The eighth lens 780 has negative refractive power and is made of plastic. Its object-side surface 781 is concave near the optical axis, and its image-side surface 782 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 781 has at least one inflection point, and its image-side surface 782 has at least one inflection point.

[0294] The infrared filter element 790 is made of glass and is located between the eighth lens 780 and the imaging surface 795. It does not affect the focal length of the camera lens assembly.

[0295] Please refer to Tables 13 and 14 below.

[0296]

[0297]

[0298]

[0299]

[0300] In the seventh embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the above embodiments and will not be repeated here.

[0301]

[0302] <Eighth Embodiment>

[0303] Please refer to Figures 15 to 16 ,in Figure 15 A schematic diagram of an image-capturing device according to an eighth embodiment of the present invention is shown. Figure 16 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the eighth embodiment. Figure 15As can be seen, the image capturing device includes a camera lens assembly (unlabeled) and an electronic image sensor 899. The camera lens assembly, from the object side to the image side, includes, in sequence, an aperture 800, a first lens 810, a second lens 820, a third lens 830, an aperture stop 801, a fourth lens 840, a fifth lens 850, a sixth lens 860, a seventh lens 870, an eighth lens 880, an infrared filter element 890, and an imaging surface 895. The electronic image sensor 899 is disposed on the imaging surface 895. The camera lens assembly includes eight lenses (810, 820, 830, 840, 850, 860, 870, and 880), and there are no other interposed lenses between the lenses.

[0304] The first lens 810 has positive refractive power and is made of glass. Its object-side surface 811 is convex near the optical axis, and its image-side surface 812 is convex near the optical axis. Both surfaces are aspherical, and its image-side surface 812 has at least one inflection point.

[0305] The second lens 820 has negative refractive power and is made of plastic. Its object-side surface 821 is concave near the optical axis, and its image-side surface 822 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 821 has at least one inflection point, and its image-side surface 822 has at least one inflection point.

[0306] The third lens 830 has positive refractive power and is made of plastic. Its object-side surface 831 is convex near the optical axis, and its image-side surface 832 is concave near the optical axis. Both surfaces are aspherical, and its image-side surface 832 has at least one inflection point.

[0307] The fourth lens 840 has negative refractive power and is made of plastic. Its object-side surface 841 is concave near the optical axis, and its image-side surface 842 is concave near the optical axis. Both surfaces are aspherical, and its image-side surface 842 has at least one inflection point.

[0308] The fifth lens 850 has positive refractive power and is made of plastic. Its object-side surface 851 is concave near the optical axis, and its image-side surface 852 is convex near the optical axis. Both surfaces are aspherical. Its object-side surface 851 has at least one inflection point, and its image-side surface 852 has at least one inflection point.

[0309] The sixth lens 860 has positive refractive power and is made of plastic. Its object-side surface 861 is convex near the optical axis, and its image-side surface 862 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 861 has at least one inflection point, its image-side surface 862 has at least one inflection point, and its image-side surface 862 has a convex critical point off-axis.

[0310] The seventh lens 870 has positive refractive power and is made of plastic. Its object-side surface 871 is convex near the optical axis, and its image-side surface 872 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 871 has at least one inflection point, its image-side surface 872 has at least one inflection point, its object-side surface 871 has a concave critical point off-axis, and its image-side surface 872 has a convex critical point off-axis.

[0311] The eighth lens 880 has negative refractive power and is made of plastic. Its object-side surface 881 is concave near the optical axis, and its image-side surface 882 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 881 has at least one inflection point, its image-side surface 882 has at least one inflection point, and its object-side surface 881 has a convex critical point off-axis.

[0312] The infrared filter element 890 is made of glass and is located between the eighth lens 880 and the imaging surface 895. It does not affect the focal length of the camera lens group.

[0313] Please refer to Tables 15 and 16 below.

[0314]

[0315]

[0316]

[0317]

[0318] In the eighth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the above embodiments and will not be repeated here.

[0319]

[0320] <Ninth Embodiment>

[0321] Please refer to Figures 17 to 18 ,in Figure 17 A schematic diagram of an image-capturing device according to a ninth embodiment of the present invention is shown. Figure 18 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the ninth embodiment. Figure 17As can be seen, the image capturing device includes a camera lens assembly (unlabeled) and an electronic image sensor 999. The camera lens assembly, from the object side to the image side, sequentially includes an aperture 900, a first lens 910, a second lens 920, an aperture stop 901, a third lens 930, an aperture stop 902, a fourth lens 940, a fifth lens 950, a sixth lens 960, a seventh lens 970, an aperture stop 903, an eighth lens 980, an infrared filter element 990, and an imaging surface 995. The electronic image sensor 999 is disposed on the imaging surface 995. The camera lens assembly includes eight lenses (910, 920, 930, 940, 950, 960, 970, 980), and there are no other interposed lenses between the lenses.

[0322] The first lens 910 has positive refractive power and is made of plastic. Its object-side surface 911 is convex near the optical axis, and its image-side surface 912 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 911 has at least one inflection point, and its image-side surface 912 has at least one inflection point.

[0323] The second lens 920 has negative refractive power and is made of plastic. Its object-side surface 921 is convex near the optical axis, and its image-side surface 922 is concave near the optical axis. Both surfaces are aspherical, and its image-side surface 922 has at least one inflection point.

[0324] The third lens 930 has positive refractive power and is made of plastic. Its object-side surface 931 is convex near the optical axis, and its image-side surface 932 is concave near the optical axis. Both of its surfaces are aspherical.

[0325] The fourth lens 940 has negative refractive power and is made of plastic. Its object-side surface 941 is convex near the optical axis, and its image-side surface 942 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 941 has at least one inflection point, and its image-side surface 942 has at least one inflection point.

[0326] The fifth lens 950 has positive refractive power and is made of plastic. Its object-side surface 951 is convex near the optical axis, and its image-side surface 952 is convex near the optical axis. Both surfaces are aspherical. Its object-side surface 951 has at least one inflection point, and its image-side surface 952 has at least one inflection point.

[0327] The sixth lens 960 has positive refractive power and is made of plastic. Its object-side surface 961 is concave near the optical axis, and its image-side surface 962 is convex near the optical axis. Both surfaces are aspherical. Its object-side surface 961 has at least one inflection point, and its image-side surface 962 has at least one inflection point.

[0328] The seventh lens 970 has negative refractive power and is made of plastic. Its object-side surface 971 is convex near the optical axis, and its image-side surface 972 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 971 has at least one inflection point, its image-side surface 972 has at least one inflection point, its object-side surface 971 has a concave critical point off-axis, and its image-side surface 972 has a convex critical point off-axis.

[0329] The eighth lens 980 has negative refractive power and is made of plastic. Its object-side surface 981 is concave near the optical axis, and its image-side surface 982 is convex near the optical axis. Both surfaces are aspherical. Its object-side surface 981 has at least one inflection point, its image-side surface 982 has at least one inflection point, and its object-side surface 981 has a convex critical point off-axis.

[0330] The infrared filter element 990 is made of glass and is located between the eighth lens 980 and the imaging surface 995. It does not affect the focal length of the camera lens group.

[0331] Please refer to Tables 17 and 18 below.

[0332]

[0333]

[0334]

[0335]

[0336] In the ninth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the above embodiments and will not be repeated here.

[0337]

[0338]

[0339] <Tenth Embodiment>

[0340] Please refer to Figures 19 to 20 ,in Figure 19 A schematic diagram of an image-capturing device according to a tenth embodiment of the present invention is shown. Figure 20 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the tenth embodiment. Figure 19As can be seen, the image capturing device includes a camera lens assembly (unlabeled) and an electronic image sensor 1099. The camera lens assembly, from the object side to the image side, sequentially includes an aperture 1000, a first lens 1010, a second lens 1020, an aperture stop 1001, a third lens 1030, an aperture stop 1002, a fourth lens 1040, a fifth lens 1050, a sixth lens 1060, a seventh lens 1070, an aperture stop 1003, an eighth lens 1080, an infrared filter element 1090, and an imaging plane 1095. The electronic image sensor 1099 is disposed on the imaging plane 1095. The camera lens assembly includes eight lenses (1010, 1020, 1030, 1040, 1050, 1060, 1070, and 1080), and there are no other interposed lenses between the lenses.

[0341] The first lens 1010 has positive refractive power and is made of plastic. Its object-side surface 1011 is convex near the optical axis, and its image-side surface 1012 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 1011 has at least one inflection point, and its image-side surface 1012 has at least one inflection point.

[0342] The second lens 1020 has negative refractive power and is made of plastic. Its object-side surface 1021 is convex near the optical axis, and its image-side surface 1022 is concave near the optical axis. Both surfaces are aspherical, and its image-side surface 1022 has at least one inflection point.

[0343] The third lens 1030 has positive refractive power and is made of plastic. Its object-side surface 1031 is convex near the optical axis, and its image-side surface 1032 is concave near the optical axis. Both of its surfaces are aspherical.

[0344] The fourth lens 1040 has negative refractive power and is made of plastic. Its object-side surface 1041 is convex near the optical axis, and its image-side surface 1042 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 1041 has at least one inflection point, and its image-side surface 1042 has at least one inflection point.

[0345] The fifth lens 1050 has positive refractive power and is made of plastic. Its object-side surface 1051 is convex near the optical axis, and its image-side surface 1052 is convex near the optical axis. Both surfaces are aspherical. Its object-side surface 1051 has at least one inflection point, and its image-side surface 1052 has at least one inflection point.

[0346] The sixth lens 1060 has positive refractive power and is made of plastic. Its object-side surface 1061 is concave near the optical axis, and its image-side surface 1062 is convex near the optical axis. Both surfaces are aspherical. Its object-side surface 1061 has at least one inflection point, and its image-side surface 1062 has at least one inflection point.

[0347] The seventh lens 1070 has negative refractive power and is made of plastic. Its object-side surface 1071 is convex near the optical axis, and its image-side surface 1072 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 1071 has at least one inflection point, its image-side surface 1072 has at least one inflection point, its object-side surface 1071 has a concave critical point off-axis, and its image-side surface 1072 has a convex critical point off-axis.

[0348] The eighth lens 1080 has negative refractive power and is made of plastic. Its object-side surface 1081 is concave near the optical axis, and its image-side surface 1082 is convex near the optical axis. Both surfaces are aspherical. Its object-side surface 1081 has at least one inflection point, and its image-side surface 1082 has at least one inflection point.

[0349] The infrared filter element 1090 is made of glass and is located between the eighth lens 1080 and the imaging surface 1095. It does not affect the focal length of the camera lens group.

[0350] Please refer to Tables 19 and 20 below.

[0351]

[0352]

[0353]

[0354]

[0355] In the tenth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the above embodiments and will not be repeated here.

[0356]

[0357]

[0358] <Eleventh Embodiment>

[0359] Please refer to Figure 21This diagram illustrates a perspective view of an image-capturing device according to the eleventh embodiment of the present invention. In this embodiment, the image-capturing device 10 is a camera module. The image-capturing device 10 includes an imaging lens 11, a driving device 12, an electronic photosensitive element 13, and an image stabilization module 14. The imaging lens 11 includes the camera lens group described in the first embodiment, a lens barrel (not otherwise labeled) for supporting the camera lens group, and a support device (Holder Member, not otherwise labeled). The imaging lens 11 can also be configured with camera lens groups from other embodiments, and the present invention is not limited thereto. The image-capturing device 10 uses the imaging lens 11 to focus light to generate an image, and cooperates with the driving device 12 to focus the image, finally imaging it on the electronic photosensitive element 13 and outputting it as image data.

[0360] The driving device 12 may have an auto-focus function, and its driving method can use a driving system such as a voice coil motor (VCM), microelectromechanical systems (MEMS), piezoelectric systems, and shape memory alloys. The driving device 12 allows the imaging lens 11 to achieve a better imaging position, enabling clear images of the subject at different object distances. In addition, the image capturing device 10 is equipped with a high-sensitivity and low-noise electronic image sensor 13 (such as CMOS or CCD) located on the imaging surface of the camera lens assembly, which can truly present the good image quality of the camera lens assembly.

[0361] The image stabilization module 14 can be, for example, an accelerometer, a gyroscope, or a Hall effect sensor. The drive unit 12 can work in conjunction with the image stabilization module 14 to form an optical image stabilization (OIS) device. By adjusting the changes in different axes of the imaging lens 11, it can compensate for the blurry image caused by shaking during shooting, or use image compensation technology in the imaging software to provide electronic image stabilization (EIS), further improving the image quality of shooting in dynamic and low-light scenes.

[0362] <Twelfth Embodiment>

[0363] Reference Figure 22 The diagram shows a perspective view of one side of an electronic device according to the tenth embodiment of the present invention.

[0364] In this embodiment, the electronic device 20 is a smartphone. The electronic device 20 includes the image capturing device 10 and the display device 21 according to the eleventh embodiment. Figure 22 The electronic device 20, the image capturing device 10, and the display device 21 are both located on the same side, so that the image capturing device 10 can be used as a front-facing camera to provide a selfie function, but the present invention is not limited thereto.

[0365] <Thirteenth Embodiment>

[0366] Please refer to Figure 23 A perspective view of one side of an electronic device according to the thirteenth embodiment of the present invention is shown.

[0367] In this embodiment, the electronic device 30 is a smartphone. The electronic device 30 includes an image-capturing device 31, an image-capturing device 32, an image-capturing device 33, and a display device (not otherwise labeled). In this embodiment, the image-capturing devices 31, 32, and 33 have different viewing angles (wherein, image-capturing device 31 is a telephoto image-capturing device, image-capturing device 32 is a standard image-capturing device, and image-capturing device 33 is a wide-angle image-capturing device), allowing the electronic device 30 to provide different magnifications to achieve optical zoom shooting effects. Image-capturing device 32 includes the camera lens assembly (not otherwise labeled) disclosed in the third embodiment and an electronic image sensor (not otherwise labeled). Image-capturing device 32 can also be configured with camera lens assemblies from other embodiments; this invention is not limited thereto. In this embodiment, image-capturing devices 31, 32, and 33 are disposed on one side of the electronic device 30, while the display device is disposed on the other side of the electronic device 30.

[0368] <Fourteenth Embodiment>

[0369] Please refer to Figure 24 A perspective view of one side of an electronic device according to the fourteenth embodiment of the present invention is shown.

[0370] In this embodiment, the electronic device 40 is a smartphone. The electronic device 40 includes an image-capturing device 41, an image-capturing device 42, and a display device (not otherwise labeled). In this embodiment, the image-capturing device 41 and the image-capturing device 42 have different viewing angles (wherein, the image-capturing device 41 is a wide-angle image-capturing device, and the image-capturing device 42 is a standard image-capturing device), allowing the electronic device 40 to provide different magnifications to achieve an optical zoom shooting effect. The image-capturing device 42 includes the camera lens assembly (not otherwise labeled) disclosed in the third embodiment above and an electronic image sensor (not otherwise labeled). The image-capturing device 42 can also be configured with camera lens assemblies from other embodiments, and the present invention is not limited thereto. In this embodiment, the image-capturing device 41 and the image-capturing device 42 are disposed on one side of the electronic device 40, while the display device is disposed on the other side of the electronic device 40.

[0371] The image capturing devices 10, 32, and 42 of the present invention are not limited to application in smartphones. They can also be applied to mobile focusing systems as needed, and feature excellent aberration correction and good image quality. For example, the image capturing devices 10, 32, and 42 can be widely used in electronic devices such as 3D image capture, digital cameras, mobile devices, digital tablets, smart TVs, network monitoring equipment, dashcams, reversing cameras, multi-lens devices, recognition systems, motion-sensing game consoles, and wearable devices. The aforementioned electronic devices are merely illustrative examples of practical applications of the present invention and do not limit the scope of application of the image capturing devices of the present invention.

[0372] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. A camera lens assembly, characterized in that, It includes eight lenses, and the eight lenses are, in order from the object side to the image side, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth lens; Among them, the first lens has a positive refractive power, the object-side surface of the first lens is convex near the optical axis, the second lens has a negative refractive power, the image-side surface of the seventh lens is concave near the optical axis, the eighth lens has a negative refractive power, the object-side surface of the eighth lens is concave near the optical axis, the image-side surface of the eighth lens is convex near the optical axis, and at least one of the object-side surface and the image-side surface of the eighth lens has at least one inflection point; Among them, the total number of lenses in the camera lens group is eight, the focal length of the camera lens group is f, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, the distance from the object-side surface of the first lens to an imaging plane on the optical axis is TL, the maximum imaging height of the camera lens group is ImgH, the distance from the image-side surface of the eighth lens to the imaging plane on the optical axis is BL, and the f-number of the camera lens group is Fno, which satisfy the following conditions: |f / f3| + |f / f4| + |f / f5| + |f / f6| < 1.65; 0.50 < TL / ImgH < 1.30; 4.0 < ImgH / BL < 20.0; and 0.8 < Fno ≤ 2.

05.

2. The camera lens assembly as described in claim 1, characterized in that, The image-side surface of the first lens is concave near the optical axis, and the object-side surface of the eighth lens has a convex critical point at the off-axis position.

3. The camera lens assembly as described in claim 1, characterized in that, The focal length of the camera lens group is f, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, which satisfy the following conditions: 0.50 < |f / f3| + |f / f4| + |f / f5| + |f / f6| < 1.

25.

4. The camera lens assembly as described in claim 1, characterized in that, The radius of curvature of the object-side surface of the eighth lens is R15, and the radius of curvature of the image-side surface of the eighth lens is R16, which satisfy the following conditions: (R15 + R16) / (R15 - R16) ≤ -1.

11.

5. The camera lens assembly as described in claim 1, characterized in that, The focal length of the camera lens group is f, and the radius of curvature of the image-side surface of the sixth lens is R12, which satisfy the following conditions: -0.27 ≤ f / R12.

6. The camera lens assembly as described in claim 1, characterized in that, The maximum imaging height of the camera lens group is ImgH, and the distance from the image-side surface of the eighth lens to the imaging plane on the optical axis is BL, which satisfy the following conditions: 6.0 < ImgH / BL < 20.

0.

7. The camera lens assembly as described in claim 1, characterized in that, The object-side surface of the seventh lens has a concave critical point at the off-axis position, the image-side surface of the seventh lens has a convex critical point at the off-axis position, the vertical distance between the concave critical point of the object-side surface of the seventh lens and the optical axis is Yc71, and the vertical distance between the convex critical point of the image-side surface of the seventh lens and the optical axis is Yc72, which satisfy the following conditions: 0.30 < Yc71 / Yc72 < 3.

0.

8. The camera lens assembly as described in claim 1, characterized in that, The sum of the spacing distances of each two adjacent lenses in the camera lens group on the optical axis is ΣAT, and the spacing distance between the seventh lens and the eighth lens on the optical axis is T78, which satisfy the following conditions: ΣAT / T78<3.

0.

9. The camera lens assembly as described in claim 1, characterized in that, The second lens has a focal length of f2, the third lens has a focal length of f3, the fourth lens has a focal length of f4, the fifth lens has a focal length of f5, the sixth lens has a focal length of f6, the seventh lens has a focal length of f7, and the eighth lens has a focal length of f8, satisfying the following conditions: |f8 / f2|<1.0; |f8 / f3|<1.0; |f8 / f4|<1.0; |f8 / f5|<1.0; |f8 / f6|<1.0; and |f8 / f7|<1.

0.

10. The camera lens assembly as described in claim 1, characterized in that, The object-side surface of the eighth lens has a convex critical point off-axis. The perpendicular distance between this convex critical point and the optical axis is Yc81. The maximum imaging height of the camera lens assembly is ImgH, which satisfies the following conditions: 0.20 <Yc81 / ImgH<0.80。 11. The camera lens assembly as described in claim 1, 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, the optical axis spacing between the fifth lens and the sixth lens is T56, the optical axis spacing between the sixth lens and the seventh lens is T67, and the optical axis spacing between the seventh lens and the eighth lens is T78. These conditions must be met. 1.0 <T78 / T12; 1.0 <T78 / T23; 1.0 <T78 / T34; 1.0 <T78 / T45; 1.0 <T78 / T56; as well as 1.0 <T78 / T67。 12. The camera lens assembly as described in claim 1, characterized in that, The number of lenses with an Abbe number less than 20 in this camera lens group is V20, which satisfies the following condition: 2≤V20。 13. The camera lens assembly as described in claim 1, characterized in that, The focal length of the camera lens assembly is f, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, the maximum imaging height of the camera lens assembly is ImgH, and the distance from the image-side surface of the eighth lens to the imaging plane on the optical axis is BL. It satisfies the following conditions: 0.45<|f / f3|+|f / f4|+|f / f5|+|f / f6|<1.50; as well as 6.0 <ImgH / BL<12.0; Wherein, the Abbe number of the first lens is V1, the Abbe number of the second lens is V2, the Abbe number of the third lens is V3, the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, the Abbe number of the sixth lens is V6, the Abbe number of the seventh lens is V7, the Abbe number of the eighth lens is V8, the Abbe number of the i-th lens is Vi, the refractive index of the first lens is N1, the refractive index of the second lens is N2, the refractive index of the third lens is N3, the refractive index of the fourth lens is N4, the refractive index of the fifth lens is N5, the refractive index of the sixth lens is N6, the refractive index of the seventh lens is N7, the refractive index of the eighth lens is N8, and the refractive index of the i-th lens is Ni. At least one lens in this camera lens assembly satisfies the following condition: 5.0 < Vi / Ni < 11.9, where i = 1, 2, 3, 4, 5, 6, 7 or 8.

14. The camera lens assembly as described in claim 1, characterized in that, The aperture value of this camera lens group is Fno, which satisfies the following conditions: 1.40 ≤ Fno ≤ 2.

05.

15. The camera lens assembly as described in claim 1, characterized in that, The focal length of this camera lens group is f, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, and the focal length of the sixth lens is f6, which satisfy the following conditions: 0.77 ≤ |f / f3| + |f / f4| + |f / f5| + |f / f6| ≤ 1.

06.

16. The camera lens assembly as described in claim 1, characterized in that, The focal length of this camera lens group is f, and the radius of curvature of the image-side surface of the sixth lens is R12, which satisfies the following conditions: -0.30 < f / R12 < 2.

50.

17. The camera lens assembly as described in claim 1, characterized in that, The maximum imaging height of this camera lens group is ImgH, and the distance from the image-side surface of the eighth lens to the imaging surface on the optical axis is BL, which satisfies the following conditions: 7.70 ≤ ImgH / BL ≤ 11.

48.

18. The camera lens assembly as claimed in claim 1, characterized in that, The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and the maximum imaging height of this camera lens group is ImgH, which satisfies the following conditions: 1.19 ≤ TL / ImgH < 1.

30.

19. The camera lens assembly as claimed in claim 1, characterized in that, The radius of curvature of the object-side surface of the eighth lens is R15, and the radius of curvature of the image-side surface of the eighth lens is R16, which satisfies the following conditions: -2.35 ≤ (R15 + R16) / (R15 - R16) ≤ -1.

11.

20. A camera lens assembly, characterized in that, It includes eight lenses, and these eight lenses are, in order from the object side to the image side, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth lens; Among them, the first lens has a positive refractive power, the object-side surface of the first lens is convex near the optical axis, the second lens has a negative refractive power, the fifth lens has a positive refractive power, the image-side surface of the seventh lens is concave near the optical axis, the eighth lens has a negative refractive power, the object-side surface of the eighth lens is concave near the optical axis, the image-side surface of the eighth lens is convex near the optical axis, and at least one of the object-side surface and the image-side surface of the eighth lens has at least one inflection point; Among them, the total number of lenses in this camera lens group is eight, the focal length of this camera lens group is f, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, the distance from the object-side surface of the first lens to an imaging surface on the optical axis is TL, the maximum imaging height of this camera lens group is ImgH, the distance from the image-side surface of the eighth lens to the imaging surface on the optical axis is BL, and the aperture value of this camera lens group is Fno, which satisfies the following conditions: |f / f3| + |f / f4| + |f / f5| + |f / f6| < 1.65; 0.50 < TL / ImgH < 1.30; 4.0 < ImgH / BL < 20.0; and 0.8 < Fno ≤ 2.

05.

21. The camera lens assembly as described in claim 20, characterized in that, The image-side surface of the first lens is concave near the optical axis, and the object-side surface of the eighth lens has a convex critical point off-axis. The perpendicular distance between the convex critical point of the object-side surface of the eighth lens and the optical axis is Yc81. The maximum imaging height of the camera lens group is ImgH, which satisfies the following conditions: 0.20 <Yc81 / ImgH<0.80。 22. The camera lens assembly as described in claim 20, characterized in that, The camera lens assembly has a focal length of f, the third lens has a focal length of f3, the fourth lens has a focal length of f4, the fifth lens has a focal length of f5, and the sixth lens has a focal length of f6, satisfying the following conditions: 0.50<|f / f3|+|f / f4|+|f / f5|+|f / f6|<1.

25.

23. The camera lens assembly as described in claim 20, characterized in that, The maximum imaging height of the camera lens assembly is ImgH, and the distance from the image-side surface of the eighth lens to the imaging plane on the optical axis is BL, which satisfies the following conditions: 6.0 <ImgH / BL<20.0。 24. The camera lens assembly as described in claim 20, characterized in that, The seventh lens has a concave critical point on its object-side surface at an off-axis location, and a convex critical point on its image-side surface at an off-axis location. The perpendicular distance between the concave critical point on the object-side surface of the seventh lens and the optical axis is Yc71, and the perpendicular distance between the convex critical point on the image-side surface of the seventh lens and the optical axis is Yc72. These conditions must be met. 0.30 <Yc71 / Yc72<3.0。 25. The camera lens assembly as described in claim 20, characterized in that, The sum of the optical axis spacing between any two adjacent lenses in the camera lens assembly is ΣAT, and the optical axis spacing between the seventh lens and the eighth lens is T78, which satisfies the following condition: ΣAT / T78<3.

0.

26. The camera lens assembly as described in claim 20, characterized in that, The number of lenses with an Abbe number less than 20 in this camera lens group is V20, which satisfies the following condition: 2≤V20。 27. The camera lens assembly as described in claim 20, characterized in that, The seventh lens has negative refractive power.

Images