Optical lens assembly for image capturing

Abstract

The present application provides a kind of optical lens group for image acquisition, wherein the optical lens group for image acquisition includes nine lenses.Nine lenses are sequentially first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, seventh lens, eighth lens and ninth lens from object side to image side along optical path.Nine lenses have object side surface towards object side direction and image side surface towards image side direction respectively.The total number of lenses of the optical lens group for image acquisition is nine.The first lens has positive refractive power.The second lens has negative refractive power.The image side surface of the ninth lens is concave at near optical axis, and the image side surface of the ninth lens has at least one inflection point.When certain conditions are met, the optical lens group for image acquisition can meet the needs of large photosensitive element, miniaturization and high imaging quality at the same time.

Description

[0001] This application is a divisional application of the original application whose filing date is May 15, 2020, and application number is 202010412383.9, and the title is: Optical lens set for image capturing, image capturing device and electronic device. FIG. 1 TECHNICAL FIELD

[0002] The present application relates to an optical lens assembly for image capturing, in particular to an optical lens assembly for image capturing which can meet the requirements of large image sensor, miniaturization and high imaging quality at the same time. BACKGROUND

[0003] With the advancement of semiconductor technology, the performance of electronic image sensors is improved, and the pixel size can be smaller. Therefore, optical lenses with high imaging quality are indispensable.

[0004] With the rapid development of technology, electronic devices equipped with optical lenses are more widely used, and the requirements for optical lenses are more diverse. Since the optical lenses of the past are not easy to balance the requirements of imaging quality, sensitivity, aperture size, volume or viewing angle, the present application provides an optical lens to meet the requirements. SUMMARY

[0005] The present application provides an optical lens assembly for image capturing. The optical lens assembly for image capturing comprises nine lenses in sequence from an object side to an image side along an optical path. When certain conditions are met, the optical lens assembly for image capturing provided by the present application can meet the requirements of large image sensor, miniaturization and high imaging quality at the same time.

[0006] The present application provides an optical lens assembly for image capturing, comprising nine lenses. The nine lenses are in sequence from an object side to an image side along an optical path as a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens. The nine lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction. The total number of lenses of the optical lens assembly for image capturing is nine. The first lens has positive refractive power. The second lens has negative refractive power. The image side surface of the ninth lens is concave at the vicinity of the optical axis, and the image side surface of the ninth lens has at least one inflection point. The radius of curvature of the object side surface of the ninth lens is R17, the radius of curvature of the image side surface of the ninth lens is R18, the distance from the object side surface of the first lens to the image plane on the optical axis is TL, the maximum image height of the optical lens assembly for image capturing is ImgH, the focal length of the optical lens assembly for image capturing is f, and the entrance pupil diameter of the optical lens assembly for image capturing is EPD, which satisfy the following conditions:

[0007] -0.70<(R17+R18) / (R17-R18)<1.50;

[0008] 0.50 < TL / ImgH < 1.55; and

[0009] 0.80 < f / EPD < 1.89.

[0010] The present application also provides an optical lens assembly for image capturing, comprising nine lenses. The nine lenses are sequentially arranged along an optical path from an object side to an image side as a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. The nine lenses each have an object side surface facing the object side direction and an image side surface facing the image side direction. The total number of lenses of the optical lens assembly for image capturing is nine. The first lens has positive refractive power. The second lens has negative refractive power. The image side surface of the ninth lens is concave at a vicinity of an optical axis, and the image side surface of the ninth lens has at least one inflection point. A radius of curvature of the object side surface of the ninth lens is R17, a radius of curvature of the image side surface of the ninth lens is R18, a distance between the object side surface of the first lens and an image plane on the optical axis is TL, a maximum image height of the optical lens assembly for image capturing is ImgH, a focal length of the optical lens assembly for image capturing is f, an entrance pupil diameter of the optical lens assembly for image capturing is EPD, a maximum value of thicknesses of all the lenses of the optical lens assembly for image capturing on the optical axis is CTmax, and a minimum value of thicknesses of all the lenses of the optical lens assembly for image capturing on the optical axis is CTmin, which satisfy the following conditions:

[0011] -0.90 < (R17+R18) / (R17-R18) < 2.50;

[0012] 0.50 < TL / ImgH < 1.55;

[0013] 0.80 < f / EPD < 1.89; and

[0014] 1.0 < CTmax / CTmin < 5.0.

[0015] When (R17+R18) / (R17-R18) satisfies the above condition, the surface shape of the ninth lens is adjusted to enhance the light control ability of the image side surface of the ninth lens and improve image quality.

[0016] When TL / ImgH satisfies the above condition, the total length is compressed while ensuring sufficient light receiving area to avoid dark corners at the periphery of the image.

[0017] When f / EPD satisfies the above condition, the entrance pupil diameter and the amount of light of the optical lens assembly for image capturing are effectively controlled to improve image brightness.

[0018] When CTmax / CTmin satisfies the above condition, the lens thickness is controlled to ensure the molding quality of the lens and maintain the molding stability.

[0019] The above description of the present application and the following description of the embodiments are intended to demonstrate and explain the spirit and principle of the present application, and to provide further explanation of the claims of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] FIG. 2 A schematic diagram of an image pickup device according to a first embodiment of the present application is shown.

[0021] FIG. 3 From left to right in order are a spherical aberration, an astigmatism, and a distortion curve of the first embodiment.

[0022] FIG. 4 A schematic diagram of an image pickup device according to a second embodiment of the present application is shown.

[0023] FIG. 5 From left to right in order are a spherical aberration, an astigmatism, and a distortion curve of the second embodiment.

[0024] FIG. 6 A schematic diagram of an image pickup device according to a third embodiment of the present application is shown.

[0025] FIG. 7 From left to right in order are a spherical aberration, an astigmatism, and a distortion curve of the third embodiment.

[0026] FIG. 8 A schematic diagram of an image pickup device according to a fourth embodiment of the present application is shown.

[0027] FIG. 9 From left to right in order are a spherical aberration, an astigmatism, and a distortion curve of the fourth embodiment.

[0028] FIG. 10 A schematic diagram of an image pickup device according to a fifth embodiment of the present application is shown.

[0029] FIG. 11 From left to right in order are a spherical aberration, an astigmatism, and a distortion curve of the fifth embodiment.

[0030] FIG. 12 A schematic diagram of an image pickup device according to a sixth embodiment of the present application is shown.

[0031] FIG. 13 From left to right in order are a spherical aberration, an astigmatism, and a distortion curve of the sixth embodiment.

[0032] FIG. 14 A schematic diagram of an image pickup device according to a seventh embodiment of the present application is shown.

[0033] FIG. 15 From left to right in order are a spherical aberration, an astigmatism, and a distortion curve of the seventh embodiment.

[0034] FIG. 16A schematic diagram of an imaging device according to the eighth embodiment of the present invention is shown.

[0035] FIG. 17 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the eighth embodiment.

[0036] FIG. 18 A schematic diagram of an image-capturing device according to a ninth embodiment of the present invention is shown.

[0037] FIG. 19 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the ninth embodiment.

[0038] FIG. 20 A schematic diagram of an image-capturing device according to the tenth embodiment of the present invention is shown.

[0039] FIG. 21 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the tenth embodiment.

[0040] FIG. 22 A schematic diagram of an image-capturing device according to the eleventh embodiment of the present invention is shown.

[0041] FIG. 23 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the eleventh embodiment.

[0042] FIG. 24 A schematic diagram of an image-capturing device according to the twelfth embodiment of the present invention is shown.

[0043] FIG. 25 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the twelfth embodiment.

[0044] FIG. 26 A perspective view of an imaging device according to a thirteenth embodiment of the present invention is shown.

[0045] FIG. 27 A perspective view of one side of an electronic device according to the fourteenth embodiment of the present invention is shown.

[0046] FIG. 26 Draw FIG. 28 A three-dimensional diagram of the other side of the electronic device.

[0047] FIG. 26 Draw FIG. 29 System block diagram of an electronic device.

[0048] FIG. 30 A perspective view of one side of an electronic device according to the fifteenth embodiment of the present invention is shown.

[0049] FIG. 31 A perspective view of one side of an electronic device according to the sixteenth embodiment of the present invention is shown.

[0050] FIG. 32 A schematic diagram of the parameters Y31, Y92, Yc72, Yc82, Yc92, inflection points and critical points of partial lenses, and an air lens ALE according to a first embodiment of the present application is shown.

[0051] FIG. 33 A schematic diagram of a configuration relationship of a reflective element according to the present application in an imaging optical lens assembly is shown.

[0052] FIG. 34 A schematic diagram of another configuration relationship of a reflective element according to the present application in an imaging optical lens assembly is shown.

[0053] FIG. 35 A schematic diagram of a configuration relationship of two reflective elements according to the present application in an imaging optical lens assembly is shown.

[0054] FIG. 36 A schematic diagram of another configuration relationship of two reflective elements according to the present application in an imaging optical lens assembly is shown.

[0055] FIG. 31 A schematic diagram of a configuration relationship of three reflective elements according to the present application in an imaging optical lens assembly is shown.

[0056] Symbol explanation

[0057] 10, 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h, 10i, 10j, 10k, 10m, 10n, 10p... imaging device

[0058] 11... imaging lens

[0059] 12... driving device

[0060] 13... electronic photosensitive element

[0061] 14... image stabilization module

[0062] 20, 30, 40... electronic device

[0063] 21, 31, 41... flash module

[0064] 22... focus assisting module

[0065] 23... image signal processor

[0066] 24... user interface

[0067] 25... image software processor

[0068] C... critical point

[0069] P … point of inflection;

[0070] IM … imaging plane;

[0071] OA1 … first optical axis;

[0072] OA2 … second optical axis;

[0073] OA3 … third optical axis;

[0074] OA4 … fourth optical axis;

[0075] LF … reflecting element;

[0076] LF1 … first reflecting element;

[0077] LF2 … second reflecting element;

[0078] LF3 … third reflecting element;

[0079] LG … lens group;

[0080] 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200 … stop;

[0081] 101, 201, 301, 401, 501, 601, 701, 801, 901, 1001, 1101, 1201 … diaphragm;

[0082] 110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110, 1210 … first lens;

[0083] 111, 211, 311, 411, 511, 611, 711, 811, 911, 1011, 1111, 1211 … object-side surface;

[0084] 112, 212, 312, 412, 512, 612, 712, 812, 912, 1012, 1112, 1212 … image-side surface;

[0085] 120, 220, 320, 420, 520, 620, 720, 820, 920, 1020, 1120, 1220 … second lens;

[0086] 121, 221, 321, 421, 521, 621, 721, 821, 921, 1021, 1121, 1221 … object-side surface;

[0087] 122, 222, 322, 422, 522, 622, 722, 822, 922, 1022, 1122, 1222... image side surface;

[0088] 130, 230, 330, 430, 530, 630, 730, 830, 930, 1030, 1130, 1230... third lens;

[0089] 131, 231, 331, 431, 531, 631, 731, 831, 931, 1031, 1131, 1231... object side surface;

[0090] 132, 232, 332, 432, 532, 632, 732, 832, 932, 1032, 1132, 1232... image side surface;

[0091] 140, 240, 340, 440, 540, 640, 740, 840, 940, 1040, 1140, 1240... fourth lens;

[0092] 141, 241, 341, 441, 541, 641, 741, 841, 941, 1041, 1141, 1241... object side surface;

[0093] 142, 242, 342, 442, 542, 642, 742, 842, 942, 1042, 1142, 1242... image side surface;

[0094] 150, 250, 350, 450, 550, 650, 750, 850, 950, 1050, 1150, 1250... fifth lens;

[0095] 151, 251, 351, 451, 551, 651, 751, 851, 951, 1051, 1151, 1251... object side surface;

[0096] 152, 252, 352, 452, 552, 652, 752, 852, 952, 1052, 1152, 1252... image side surface;

[0097] 160, 260, 360, 460, 560, 660, 760, 860, 960, 1060, 1160, 1260... sixth lens;

[0098] 161, 261, 361, 461, 561, 661, 761, 861, 961, 1061, 1161, 1261... object side surface;

[0099] 162, 262, 362, 462, 562, 662, 762, 862, 962, 1062, 1162, 1262 … image-side surface

[0100] 170, 270, 370, 470, 570, 670, 770, 870, 970, 1070, 1170, 1270 … seventh lens

[0101] 171, 271, 371, 471, 571, 671, 771, 871, 971, 1071, 1171, 1271 … object-side surface

[0102] 172, 272, 372, 472, 572, 672, 772, 872, 972, 1072, 1172, 1272 … image-side surface

[0103] 180, 280, 380, 480, 580, 680, 780, 880, 980, 1080, 1180, 1280 … eighth lens

[0104] 181, 281, 381, 481, 581, 681, 781, 881, 981, 1081, 1181, 1281 … object-side surface

[0105] 182, 282, 382, 482, 582, 682, 782, 882, 982, 1082, 1182, 1282 … image-side surface

[0106] 190, 290, 390, 490, 590, 690, 790, 890, 990, 1090, 1190, 1290 … ninth lens

[0107] 191, 291, 391, 491, 591, 691, 791, 891, 991, 1091, 1191, 1291 … object-side surface

[0108] 192, 292, 392, 492, 592, 692, 792, 892, 992, 1092, 1192, 1292 … image-side surface

[0109] 193, 293, 393, 493, 593, 693, 793, 893, 993, 1093, 1193, 1293 … filter element

[0110] 196, 296, 396, 496, 596, 696, 796, 896, 996, 1096, 1196, 1296 … imaging surface

[0111] 199, 299, 399, 499, 599, 699, 799, 899, 999, 1099, 1199, 1299,... an electronic photosensitive element;

[0112] Y31... the maximum effective radius of the object-side surface of the third lens;

[0113] Y92... the maximum effective radius of the image-side surface of the ninth lens;

[0114] Yc72... the perpendicular distance between the critical point of the image-side surface of the seventh lens and the optical axis;

[0115] Yc82... the perpendicular distance between the critical point of the image-side surface of the eighth lens and the optical axis;

[0116] Yc92... the perpendicular distance between the critical point of the image-side surface of the ninth lens and the optical axis. DETAILED DESCRIPTION

[0117] The imaging optical lens assembly can include three lens groups, and the three lens groups are sequentially arranged along the optical path from the object side to the image side as the first lens group, the second lens group, and the third lens group. The first lens group can include at least two lenses, the second lens group can include at least three lenses, and the third lens group can include at least three lenses. All lenses in the imaging optical lens assembly each have an object-side surface facing the object-side direction and an image-side surface facing the image-side direction.

[0118] At least four lenses in the imaging optical lens assembly can be made of plastic material; thereby, the production cost and the manufacturing speed can be effectively reduced to improve the possibility of mass production, and the design freedom can be improved to facilitate the optimization of off-axis aberration. All lenses in the third lens group can be made of plastic material. Half of the maximum viewing angle of the imaging optical lens assembly can be greater than 35 degrees; thereby, the use requirements of the public can be met to improve the market acceptance.

[0119] At least two lenses in the first lens group each have a convex object-side surface near the optical axis and a concave image-side surface near the optical axis. Thereby, the coma and the astigmatism can be improved.

[0120] At least one lens in the second lens group has a non-spherical surface in at least one of its object-side surface and image-side surface. Thereby, the system aberration can be effectively corrected, and the overall thickness of the second lens group can be controlled to avoid occupying too much space.

[0121] At least two lens surfaces of the third lens group can have at least one critical point at an off-axis position, wherein the at least two lens surfaces can be lens surfaces of the same lens or lens surfaces of different lenses; thereby, off-axis aberration can be corrected and image curvature can be reduced. Please refer to FIG. 31 FIG. 7 is a schematic diagram illustrating critical points C of the seventh lens 170, the eighth lens 180 and the ninth lens 190 at an off-axis position according to the first embodiment of the present application. FIG. 31 The critical points of the seventh lens, the eighth lens and the ninth lens at an off-axis position are illustrated as an exemplary description in the first embodiment, but other lenses in addition to the seventh lens, the eighth lens and the ninth lens can have one or more critical points at an off-axis position in each embodiment of the present application.

[0122] Hereinafter, in the imaging optical lens, the lens closest to the object side is defined as the most object-side lens, and the lens closest to the image side is defined as the most image-side lens or the last lens. In one embodiment, the first lens group can include three lenses, the second lens group can include three lenses, the third lens group can include three lenses, and the imaging optical lens can include nine lenses. The nine lenses are sequentially arranged along the optical path from the object side to the image side as the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens and the ninth lens. The nine lenses respectively have an object-side surface facing the object side direction and an image-side surface facing the image side direction. That is, the first lens closest to the object side is the most object-side lens, and the ninth lens closest to the image side is the most image-side lens or the last lens.

[0123] The first lens can have positive refractive power; thereby, the main converging ability can be provided to effectively compress the space of the imaging optical lens to meet the miniaturization requirement. The object-side surface of the first lens can be convex at the vicinity of the optical axis; thereby, the included angle between the light and the object-side surface of the first lens can be slowed down to avoid total reflection.

[0124] The second lens can have negative refractive power; thereby, the aberration generated by the first lens can be balanced to correct the spherical aberration and the chromatic aberration. The object-side surface of the second lens can be convex at the vicinity of the optical axis, and the image-side surface of the second lens can be concave at the vicinity of the optical axis; thereby, the aberration generated by the first lens can be effectively balanced to improve the image quality.

[0125] The image-side surface of the third lens can be concave at the vicinity of the optical axis. Thereby, the viewing angle and the volume of the imaging optical lens can be balanced to meet the product requirement.

[0126] The sixth lens can have a negative refractive power. By this, the refractive power configuration of the image taking optical lens set can be balanced to achieve better image quality.

[0127] The seventh lens object side surface can be convex at the vicinity of the optical axis, and the seventh lens image side surface can be concave at the vicinity of the optical axis. By this, the light path direction in the tangential direction and the sagittal direction can be balanced to facilitate correction of astigmatism.

[0128] The eighth lens can have a positive refractive power; by this, the refractive power of the eighth lens and the ninth lens can be balanced to reduce overall aberration. The eighth lens image side surface can be concave at the vicinity of the optical axis; by this, the back focal length can be compressed to avoid excessive volume. In one embodiment, when the eighth lens object side surface is convex at the vicinity of the optical axis, and the eighth lens image side surface is concave at the vicinity of the optical axis, the effective radius of the eighth lens can be increased to correct peripheral light.

[0129] The ninth lens can have a negative refractive power; by this, a small module can be achieved to suit the application in electronic devices with strict volume limitation. The ninth lens image side surface can be concave at the vicinity of the optical axis; by this, the back focal length can be shortened to meet the requirement of miniaturization. In one embodiment, when the ninth lens object side surface is concave at the vicinity of the optical axis, and the ninth lens image side surface is concave at the vicinity of the optical axis, good image quality can be maintained at different object distances.

[0130] Among the first lens to the ninth lens, no other entity lens is inserted between the lenses. That is, no other entity lens is included between two adjacent lenses, but other optical elements such as air lens, or light shield can be included.

[0131] The optical lens assembly for image capturing disclosed in the present application has at least three lenses, each of which has at least one inflection point on at least one of the object side surface and the image side surface thereof, thereby helping to correct image curvature to meet the miniaturization requirement and making the Petzval surface of the optical lens assembly for image capturing more flat. Among them, at least one lens in the second lens group has at least one inflection point on at least one of the object side surface and the image side surface thereof, thereby correcting off-axis field aberration. Among them, at least one lens in the third lens group has at least one inflection point on at least one of the object side surface and the image side surface thereof, thereby helping to correct off-axis aberration and reducing the volume of the optical lens assembly for image capturing. Among them, the image side surface of the eighth lens has at least two inflection points, thereby locally adjusting the condensation for off-axis field and improving the peripheral image quality during close-up shooting. Among them, the image side surface of the ninth lens has at least one inflection point, thereby helping to correct off-axis aberration and reducing the volume of the optical lens assembly for image capturing. Among them, the image side surface of the ninth lens has at least two inflection points, thereby locally adjusting the condensation for off-axis field and improving the peripheral image quality during close-up shooting. Please refer to FIG. 31 FIG. 1 is a schematic diagram illustrating the inflection points P of some lenses in the first embodiment according to the present application. FIG. 31 The inflection points of the third lens 130 to the ninth lens 190 in the first embodiment are illustrated as an exemplary illustration, and other lenses in addition to the third lens to the ninth lens in each embodiment of the present application can also have one or more inflection points.

[0132] The radius of curvature of the object side surface of the ninth lens is R17, and the radius of curvature of the image side surface of the ninth lens is R18, which can satisfy the following condition: -0.90 < (R17+R18) / (R17-R18) < 2.50. Thereby, it helps to adjust the surface shape of the ninth lens to strengthen the light control ability of the image side surface of the ninth lens and improve the image quality. Among them, the following condition can also be satisfied: -0.90 < (R17+R18) / (R17-R18) < 0.55. Among them, the following condition can also be satisfied: -0.70 < (R17+R18) / (R17-R18) < 0.43. Among them, the following condition can also be satisfied: -0.50 < (R17+R18) / (R17-R18) < 1.50.

[0133] The maximum value of the thickness of all lenses of the optical lens assembly for image capturing on the optical axis is CTmax, and the minimum value of the thickness of all lenses of the optical lens assembly for image capturing on the optical axis is CTmin, which can satisfy the following condition: 1.0 < CTmax / CTmin < 6.0. Thereby, it helps to control the lens thickness to ensure the molding quality of the lens and maintain the molding stability. Among them, the following condition can also be satisfied: 2.50 < CTmax / CTmin < 5.0.

[0134] The optical lens assembly for image capturing disclosed by the present application can have an air lens between the eighth lens and the ninth lens. It is worth mentioning that the air lens is a space between two lenses, using air as the medium, and using the adjacent surfaces of the two lenses as the refractive surface to converge light and correct the peripheral image. When the air lens is arranged on the object side of the last lens, the light beams of different fields of view can be converged at the image side end, thereby optimizing the light convergence of the imaging surface. The radius of curvature of the object side surface of the air lens is Rao, and the radius of curvature of the image side surface of the air lens is Rai, which can satisfy the following condition: -25.0 < (Rao+Rai) / (Rao-Rai) < 10.0. In this way, it is helpful to optimize the shooting quality at different object distances. The following condition can also be satisfied: -15.0 < (Rao+Rai) / (Rao-Rai) < 0.50. The following condition can also be satisfied: -1.50 < (Rao+Rai) / (Rao-Rai) < 0.50. Please refer to FIG. 31 is a schematic diagram of the air lens ALE between the eighth lens 180 and the ninth lens 190 (i.e., between the image side surface 182 of the eighth lens and the object side surface 191 of the ninth lens; or on the object side of the ninth lens 190) according to the first embodiment of the present application.

[0135] 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 ninth lens is V9, the Abbe number of the ith 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 ninth lens is N9, the refractive index of the ith lens is Ni, and the minimum value of Vi / Ni is (Vi / Ni)min, which can satisfy the following condition: 7.0 < (Vi / Ni)min < 11.80, where i = 1, 2, 3, 4, 5, 6, 7, 8, or 9. In this way, the optical lens assembly for image capturing can have sufficient image control ability to correct various aberrations. The following condition can also be satisfied: 9.0 < (Vi / Ni)min < 11.50, where i = 1, 2, 3, 4, 5, 6, 7, 8, or 9.

[0136] The Abbe number of the sixth lens is V6, which can satisfy the following condition: 10.0 < V6 < 40.0. In this way, the sixth lens can have a better chromatic aberration balancing capability to avoid the imaging position from being deviated by light of different wavelengths. In addition, the following condition can also be satisfied: 30.0 < V6 < 40.0.

[0137] The Abbe number of the seventh lens is V7, which can satisfy the following condition: 10.0 < V7 < 40.0. In this way, the sixth lens can have a better chromatic aberration balancing capability to avoid the imaging position from being deviated by light of different wavelengths. In addition, the following condition can also be satisfied: 30.0 < V7 < 40.0.

[0138] The focal length of the imaging optical lens assembly is f, and the focal length of the eighth lens is f8, which can satisfy the following condition: 0.65 < f / f8 < 1.50. In this way, the imaging optical lens assembly can have a better control capability at the image-side end lens to achieve a good imaging quality.

[0139] The radius of curvature of the object-side surface of the ninth lens is R17, and the radius of curvature of the image-side surface of the ninth lens is R18, which can satisfy the following condition: 0.25 < |R17 / R18| < 2.50. In this way, the surface curvature of the ninth lens can be controlled to balance the refractive power of the object-side surface and the image-side surface. In addition, the following condition can also be satisfied: 0.80 < |R17 / R18| < 2.0.

[0140] The distance between the object-side surface of the first lens and the imaging surface on the optical axis is TL, and the maximum imaging height of the imaging optical lens assembly is ImgH (i.e., half of the diagonal length of the effective sensing area of the electronic photosensitive element), which can satisfy the following condition: 0.50 < TL / ImgH < 1.55. In this way, the total length can be compressed while ensuring that there is enough light receiving area to avoid dark corners at the periphery of the image. In addition, the following condition can also be satisfied: 0.90 < TL / ImgH < 1.35.

[0141] The maximum imaging height of the imaging optical lens assembly is ImgH, and the distance between the image-side surface of the ninth lens and the imaging surface on the optical axis is BL, which can satisfy the following condition: 5.0 < ImgH / BL < 20.0. In this way, the back focal length can be effectively compressed while having a large size of light receiving range.

[0142] The focal length of the imaging optical lens assembly is f, and the focal length of the first lens is f1, which can satisfy the following condition: 0.40 < f / f1 < 3.80. In this way, the first lens can provide the imaging optical lens assembly with a sufficient converging capability at the object-side end, and avoid too large surface curvature of the lens leading to too large aberration. In addition, the following condition can also be satisfied: 0.80 < f / f1 < 1.80.

[0143] The maximum effective radius of the object-side surface of the third lens is Y31, and the maximum effective radius of the image-side surface of the ninth lens is Y92, which can satisfy the following condition: 2.80 < Y92 / Y31 < 4.50. In this way, the effective radius ratio of the lens can be effectively controlled to facilitate increasing the field of view angle and the imaging height. In addition, the following condition can also be satisfied: 3.0 < Y92 / Y31 < 4.0. Please refer to FIG. 31 FIG. 3 is a diagram illustrating parameters Y31 and Y92 according to the first embodiment of the present application.

[0144] The Abbe number of the first lens is V1, the Abbe number of the second lens is V2, and the Abbe number of the third lens is V3, which can satisfy the following condition: 0.10 < (V2+V3) / V1 < 0.90. In this way, the density difference between the material of the object-side end lens and the air can be strengthened, and the light path control capability can be improved in a limited space.

[0145] The entrance pupil diameter of the imaging optical lens assembly is EPD, and the distance from the image-side surface of the ninth lens to the imaging surface on the optical axis is BL, which can satisfy the following condition: 3.2 < EPD / BL < 18.0. In this way, a proper back focal length can be reserved for assembly in a limited space, and at the same time, the imaging optical lens assembly can be ensured to have sufficient light amount to meet the specification requirements of the product device.

[0146] The vertical distance between the critical point of the image-side surface of the seventh lens and the optical axis is Yc72, and the focal length of the imaging optical lens assembly is f, which can satisfy the following condition: 0.02 < Yc72 / f < 0.80. In this way, the off-axis aberration correction capability of the imaging optical lens assembly at the image-side end can be strengthened, and the distortion and image curvature can be reduced. Please refer to FIG. 31 FIG. 7 is a diagram illustrating parameter Yc72 according to the first embodiment of the present application.

[0147] The vertical distance between the critical point of the image-side surface of the eighth lens and the optical axis is Yc82, and the focal length of the imaging optical lens assembly is f, which can satisfy the following condition: 0.02 < Yc82 / f < 0.80. In this way, good imaging quality can be provided at different object distances. Please refer to FIG. 32 FIG. 8 is a diagram illustrating parameter Yc82 according to the first embodiment of the present application.

[0148] The vertical distance between the critical point of the image-side surface of the ninth lens and the optical axis is Yc92, and the focal length of the imaging optical lens assembly is f, which can satisfy the following condition: 0.02 < Yc92 / f < 0.80. In this way, the peripheral image distortion can be effectively avoided, and the peripheral image brightness can be maintained. Please refer to FIG. 33 FIG. 9 is a diagram illustrating parameter Yc92 according to the first embodiment of the present application.

[0149] The Abbe number of each of the at least four lenses in the optical lens assembly for image capturing can be less than 40.0. In this way, the lens material in the optical lens assembly for image capturing can have sufficient ability to control light to balance the focusing positions of different wavelengths of light, thereby avoiding image overlap.

[0150] The distance between the image-side surface of the ninth lens and the imaging plane on the optical axis is BL, and the distance between the object-side surface of the first lens and the image-side surface of the ninth lens on the optical axis is TD, which can satisfy the following condition: 0 < BL / TD < 0.25. In this way, the back focal length can be shortened to control the overall length of the optical lens assembly for image capturing. The following condition can also be satisfied: 0.03 < BL / TD < 0.18.

[0151] The focal length of the optical lens assembly for image capturing is f, and the entrance pupil diameter of the optical lens assembly for image capturing is EPD, which can satisfy the following condition: 0.80 < f / EPD < 2.0. In this way, the light entrance aperture and the amount of light entering the optical lens assembly for image capturing can be effectively controlled to improve image brightness. The following condition can also be satisfied: 1.20 < f / EPD < 1.80.

[0152] The minimum Abbe number of all the lenses in the optical lens assembly for image capturing is Vmin, which can satisfy the following condition: 8.0 < Vmin < 20.0. In this way, the optical path can be adjusted to balance the convergence ability between different wavelengths of light to correct chromatic aberration. The following condition can also be satisfied: 5.0 < Vmin < 19.0.

[0153] The sum of the separation distances of all adjacent lenses in the optical lens assembly for image capturing on the optical axis is ΣAT, the separation distance of the second lens and the third lens on the optical axis is T23, and the separation distance of the eighth lens and the ninth lens on the optical axis is T89, which can satisfy the following condition: 1.20 < ΣAT / (T23+T89) < 2.50. In this way, the spatial configuration can be adjusted to balance the volume and assembly yield of the optical lens assembly for image capturing.

[0154] The refractive power of the first lens is P1, the refractive power of the second lens is P2, the refractive power of the third lens is P3, the refractive power of the fourth lens is P4, the refractive power of the fifth lens is P5, the refractive power of the sixth lens is P6, the refractive power of the seventh lens is P7, the refractive power of the eighth lens is P8, and the refractive power of the ninth lens is P9, which can satisfy the following condition: 0.10 < (|P2|+|P3|+|P4|+|P5|+|P6|+|P7|) / (|P1|+|P8|+|P9|) < 1.0. In this way, the refractive power of the optical lens assembly for image capturing at the object-side end and the image-side end can be balanced to improve symmetry and reduce sensitivity. The refractive power of the aforementioned single lens is the ratio of the focal length of the optical lens assembly for image capturing to the focal length of the single lens.

[0155] The maximum refractive index of all the lenses in the optical lens set for image capturing is Nmax, which can satisfy the following condition: 1.66 < Nmax < 1.78. In this way, the manufacturing difficulty of the lens can be reduced, and the commercialization possibility of the optical lens set for image capturing can be improved. The following condition can also be satisfied: 1.67 < Nmax < 1.72.

[0156] The maximum imaging height of the optical lens set for image capturing is ImgH, which can satisfy the following condition: 4.50 [mm] < ImgH < 10.0 [mm]. In this way, sufficient light collection area and image brightness can be provided, and the specification requirement can be satisfied. The following condition can also be satisfied: 5.80 [mm] < ImgH < 9.0 [mm].

[0157] The distance between the first lens object side surface and the ninth lens image side surface on the optical axis is TD, the distance between the ninth lens image side surface and the imaging surface on the optical axis is BL, and the maximum imaging height of the optical lens set for image capturing is ImgH, which can satisfy the following condition: 0.05 < (TD x BL) / (ImgH x ImgH) < 0.30. In this way, the ratio between the on-axis dimension and the off-axis dimension in the optical lens set for image capturing can be balanced, and the space utilization efficiency can be improved. The following condition can also be satisfied: 0.16 < (TD x BL) / (ImgH x ImgH) ≤ 0.20.

[0158] The distance between the first lens object side surface and the imaging surface on the optical axis is TL, which can satisfy the following condition: 4.0 [mm] < TL < 10.0 [mm]. In this way, the total length can be controlled, and the product application range can be expanded to meet the current market demand.

[0159] The total thickness of all the lenses in the optical lens set for image capturing on the optical axis is ΣCT, and the total gap distance of all the adjacent lenses in the optical lens set for image capturing on the optical axis is ΣAT, which can satisfy the following condition: 1.20 < ΣCT / ΣAT < 2.0. In this way, the relationship between the lens thickness and the lens gap can be balanced, which is beneficial to the lens assembly and improves the yield.

[0160] The distance between the first lens object side surface and the imaging surface on the optical axis is TL, and the focal length of the optical lens set for image capturing is f, which can satisfy the following condition: 0.80 < TL / f < 1.30. In this way, the total length and the view angle can be balanced and controlled to meet the product application requirement.

[0161] The optical lens set for image capturing disclosed in the present application also includes an aperture, the distance between the aperture and the imaging surface on the optical axis is SL, and the distance between the first lens object side surface and the imaging surface on the optical axis is TL, which can satisfy the following condition: 0.73 < SL / TL < 0.95. In this way, the aperture position can be effectively balanced, and the volume of the optical lens set for image capturing can be controlled.

[0162] The focal length of the imaging optical lens set is f, the radius of curvature of any lens object side surface in the imaging optical lens set is Ro, the radius of curvature of any lens image side surface is Ri, and at least one lens in the imaging optical lens set satisfies the following condition: |f / Ro|+|f / Ri|<0.50. In this way, at least one lens in the imaging optical lens set can serve as a correction lens, and the curvature of any lens surface is prevented from being too large, so that the lens has the function of balancing the front and rear lens aberrations. In addition, at least one lens in the imaging optical lens set can also satisfy the following condition: |f / Ro|+|f / Ri|<0.20.

[0163] The maximum imaging height of the imaging optical lens set is ImgH, and the maximum thickness of all lenses in the imaging optical lens set on the optical axis is CTmax, which can satisfy the following condition: 5.0<ImgH / CTmax<15.0. In this way, the proportion of lens thickness in the imaging optical lens set can be controlled to improve assembly quality and yield. In addition, the following condition can also be satisfied: 6.0<ImgH / CTmax<10.0.

[0164] The technical features of the imaging optical lens set described above can be combined to achieve the corresponding effects.

[0165] In the imaging optical lens set disclosed by the present application, the material of the lens can be glass or plastic. If the material of the lens is glass, the degree of freedom of the refractive power configuration of the imaging optical lens set can be increased, and the influence of external environmental temperature changes on imaging can be reduced. Glass lenses can be made using grinding or molding techniques. If the material of the lens is plastic, the production cost can be effectively reduced. In addition, a spherical surface or an aspherical surface (ASP) can be provided on the lens surface. A spherical lens can reduce manufacturing difficulty, and if an aspherical surface is provided on the lens surface, more control variables can be obtained to reduce aberrations, reduce the number of lenses, and effectively reduce the total length of the imaging optical lens set. Further, the aspherical surface can be made by plastic injection molding or molded glass lens.

[0166] In the imaging optical lens set disclosed by the present application, if the lens surface is an aspherical surface, it means that the entire or a part of the optical effective area of the lens surface is an aspherical surface.

[0167] The optical lens assembly for image capturing disclosed in the present application can selectively add additives to any of the above lens materials to change the transmittance of the lens to specific wavelength bands of light, thereby reducing stray light and color cast. For example, the additives can have the function of filtering out 600-800 nm wavelength band of light to help reduce excess red light or infrared light, or can filter out 350-450 nm wavelength band of light to reduce excess blue light or ultraviolet light. Thus, the additives can avoid interference with imaging caused by specific wavelength bands of light. In addition, the additives can be uniformly mixed in the plastic and manufactured into lenses by injection molding technology.

[0168] In the optical lens assembly for image capturing disclosed in the present application, if the lens surface is convex and the position of the convex surface is not specified, 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 specified, 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 specified, 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.

[0169] In the optical lens assembly for image capturing disclosed in the present application, the inflection point of the lens surface refers to the junction point where the positive and negative curvatures of the lens surface change. The critical point of the lens surface refers to the tangent point on the tangent line that is tangent to the lens surface at a plane perpendicular to the optical axis, and the critical point is not located on the optical axis.

[0170] In the optical lens assembly for image capturing disclosed in the present application, the imaging surface of the optical lens assembly for image capturing can be a plane or a curved surface with any curvature, especially a concave surface facing the object side.

[0171] In the optical lens assembly for image capturing disclosed in the present application, one or more imaging correction elements (flat field elements, etc.) can be selectively arranged between the lens closest to the imaging surface and the imaging surface in the imaging light path to achieve the effect of correcting the image (image curvature, etc.). The optical properties of the imaging correction elements, such as curvature, thickness, refractive index, position, surface type (convex or concave, spherical or aspherical, diffractive surface and Fresnel surface, etc.), can be adjusted according to the requirements of the image capturing device. In general, the preferred imaging correction element is a thin flat concave element with a concave surface facing the object side arranged near the imaging surface.

[0172] In the optical lens assembly for image capturing disclosed in the present application, at least one reflective element with a turning light path function, such as a prism or a mirror, can also be selectively arranged between the object and the imaging surface in the imaging light path to provide the optical lens assembly for image capturing with higher flexibility in spatial arrangement, so that the thinness of the electronic device is not limited by the total optical length of the optical lens assembly for image capturing. For further illustration, please refer toFIG. 32 and FIG. 33 wherein FIG. 32 is a schematic diagram illustrating a configuration relationship of a reflective element according to the present application in an optical lens assembly for image capturing, and FIG. 33 is a schematic diagram illustrating another configuration relationship of a reflective element according to the present application in an optical lens assembly for image capturing. As shown in FIG. 32 and FIG. 33 , the optical lens assembly for image capturing can have, in sequence from an object (not shown) to an image plane IM along an optical path, a first optical axis OA1, a reflective element LF, and a second optical axis OA2, wherein the reflective element LF can be disposed between the object and a lens group LG of the optical lens assembly for image capturing as shown in FIG. 34 , or disposed between the lens group LG of the optical lens assembly for image capturing and the image plane IM as shown in FIG. 35 . Further, please refer to FIG. 34 and FIG. 35 wherein FIG. 34 is a schematic diagram illustrating a configuration relationship of two reflective elements according to the present application in an optical lens assembly for image capturing, and FIG. 35 is a schematic diagram illustrating another configuration relationship of two reflective elements according to the present application in an optical lens assembly for image capturing. As shown in FIG. 34 and FIG. 35 , the optical lens assembly for image capturing can also have, in sequence from an object (not shown) to an image plane IM along an optical path, a first optical axis OA1, a first reflective element LF1, a second optical axis OA2, a second reflective element LF2, and a third optical axis OA3, wherein the first reflective element LF1 is disposed between the object and a lens group LG of the optical lens assembly for image capturing, the second reflective element LF2 is disposed between the lens group LG of the optical lens assembly for image capturing and the image plane IM, and a direction of travel of light rays in the first optical axis OA1 can be the same as a direction of travel of light rays in the third optical axis OA3 as shown in FIG. 36 , or opposite to the direction of travel of light rays in the third optical axis OA3 as shown in FIG. 36 . Further, please refer to FIG. 1 to FIG. 2 , which is a schematic diagram illustrating a configuration relationship of three reflective elements according to the present application in an optical lens assembly for image capturing. As shown in FIG. 1As shown, the imaging optical lens group can also be arranged along the optical path from the subject (not shown) to the imaging plane IM, and sequentially includes a first optical axis OA1, a first reflective element LF1, a second optical axis OA2, a second reflective element LF2, a third optical axis OA3, a third reflective element LF3, and a fourth optical axis OA4. The first reflective element LF1 is disposed between the subject and the lens group LG of the imaging optical lens group, and the second and third reflective elements LF2 and LF3 are disposed between the lens group LG of the imaging optical lens group and the imaging plane IM. The imaging optical lens group can also optionally be configured with more than four reflective elements; the present invention is not limited to the type, number, and position of the reflective elements disclosed in the accompanying drawings.

[0173] The imaging optical lens group 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.

[0174] In the imaging optical lens assembly disclosed in this invention, the aperture can be configured as a front aperture or a central aperture. A front aperture means the aperture is positioned between the subject and the first lens, while a central aperture means the aperture is positioned between the first lens and the imaging plane. A front aperture allows for a longer distance between the exit pupil and the imaging plane, resulting in a telecentric effect and increasing the efficiency of image reception by the CCD or CMOS sensor. A central aperture helps to expand the field of view of the imaging optical lens assembly.

[0175] This invention may appropriately incorporate a variable aperture element, which can be a mechanical component or a light-regulating element, and whose aperture size and shape can be controlled electrically or by electrical signals. The mechanical component may include movable parts such as a blade assembly or a shielding plate; the light-regulating element may include a filter element, an electrochromic material, a liquid crystal layer, or other masking materials. This variable aperture element can enhance image adjustment capabilities by controlling the amount of light entering the image or the exposure time. Furthermore, this variable aperture element can also be the aperture of this invention, allowing image quality, such as depth of field or exposure speed, to be adjusted by changing the aperture value.

[0176] Based on the above implementation methods, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0177] <First Embodiment>

[0178] Please refer to FIG. 2 ,in FIG. 1 A schematic diagram of an image-capturing device according to a first embodiment of the present invention is shown. FIG. 1The ball aberration, the coma, and the distortion curves of the first embodiment are sequentially shown from left to right. The ball aberration, the coma, and the distortion curves of the second embodiment are sequentially shown from left to right. FIG. 3 to FIG. 4 It is known that the image capturing device comprises an image capturing optical lens assembly (not labeled separately) and an electronic photosensitive element 199. The image capturing optical lens assembly comprises, in order from the object side to the image side along the optical path, an aperture 100, a first lens 110, a second lens 120, a third lens 130, a fourth lens 140, a fifth lens 150, a sixth lens 160, a seventh lens 170, an eighth lens 180, a ninth lens 190, a diaphragm 101, a filter 193, and an imaging surface 196. Among them, the image capturing optical lens assembly has a configuration of a first lens group (the first lens 110, the second lens 120, and the third lens 130), a second lens group (the fourth lens 140, the fifth lens 150, and the sixth lens 160), and a third lens group (the seventh lens 170, the eighth lens 180, and the ninth lens 190). Among them, the electronic photosensitive element 199 is arranged on the imaging surface 196. The image capturing optical lens assembly comprises nine lenses (110, 120, 130, 140, 150, 160, 170, 180, 190), and there is no other interpolated lens between each lens.

[0179] The first lens 110 has positive refractive power and is made of plastic. The object side surface 111 thereof is a convex surface at the vicinity of the optical axis, and the image side surface 112 thereof is a concave surface at the vicinity of the optical axis. Both surfaces thereof are aspheric surfaces. The object side surface 111 has one inflection point, and the image side surface 112 has one inflection point.

[0180] The second lens 120 has negative refractive power and is made of plastic. The object side surface 121 thereof is a convex surface at the vicinity of the optical axis, and the image side surface 122 thereof is a concave surface at the vicinity of the optical axis. Both surfaces thereof are aspheric surfaces.

[0181] The third lens 130 has negative refractive power and is made of plastic. The object side surface 131 thereof is a convex surface at the vicinity of the optical axis, and the image side surface 132 thereof is a concave surface at the vicinity of the optical axis. Both surfaces thereof are aspheric surfaces. The object side surface 131 has one inflection point, and the image side surface 132 has two inflection points.

[0182] The fourth lens 140 has negative refractive power and is made of plastic. The object side surface 141 thereof is a convex surface at the vicinity of the optical axis, and the image side surface 142 thereof is a concave surface at the vicinity of the optical axis. Both surfaces thereof are aspheric surfaces. The object side surface 141 has two inflection points, and the image side surface 142 has two inflection points.

[0183] The fifth lens 150 has positive refractive power and is made of plastic. The object side surface 151 thereof is a convex surface at the vicinity of the optical axis, and the image side surface 152 thereof is a convex surface at the vicinity of the optical axis. Both surfaces thereof are aspheric surfaces. The object side surface 151 has three inflection points, and the image side surface 152 has two inflection points.

[0184] The sixth lens 160 has a negative refractive power and is made of plastic. The object-side surface 161 thereof is concave near the optical axis, and the image-side surface 162 thereof is concave near the optical axis. Both surfaces are aspherical. The object-side surface 161 has two inflection points, and the image-side surface 162 has three inflection points.

[0185] The seventh lens 170 has a negative refractive power and is made of plastic. The object-side surface 171 thereof is convex near the optical axis, and the image-side surface 172 thereof is concave near the optical axis. Both surfaces are aspherical. The object-side surface 171 has three inflection points, and the image-side surface 172 has two inflection points. The object-side surface 171 has at least one critical point away from the optical axis, and the image-side surface 172 has at least one critical point away from the optical axis.

[0186] The eighth lens 180 has a positive refractive power and is made of plastic. The object-side surface 181 thereof is convex near the optical axis, and the image-side surface 182 thereof is concave near the optical axis. Both surfaces are aspherical. The object-side surface 181 has two inflection points, and the image-side surface 182 has two inflection points. The object-side surface 181 has at least one critical point away from the optical axis, and the image-side surface 182 has at least one critical point away from the optical axis.

[0187] The ninth lens 190 has a negative refractive power and is made of plastic. The object-side surface 191 thereof is concave near the optical axis, and the image-side surface 192 thereof is concave near the optical axis. Both surfaces are aspherical. The object-side surface 191 has two inflection points, and the image-side surface 192 has three inflection points. The object-side surface 191 has at least one critical point away from the optical axis, and the image-side surface 192 has at least one critical point away from the optical axis.

[0188] The filter element 193 is made of glass and is disposed between the stop 101 and the imaging surface 196, and does not affect the focal length of the imaging optical lens assembly.

[0189] The aspherical curve equation of each lens is shown as follows:

[0190]

[0191] X: the displacement of the intersection of the aspherical surface and the optical axis to the point on the aspherical surface which is Y away from the optical axis and parallel to the optical axis;

[0192] Y: the perpendicular distance of the point on the aspherical curve to the optical axis;

[0193] R: the radius of curvature;

[0194] k: the conic coefficient; and

[0195] Ai: the aspherical coefficient of the i-th order.

[0196] In the image capturing optical lens set of the first embodiment, a focal length of the image capturing optical lens set is f, an F-number of the image capturing optical lens set is Fno, and a half of a maximum view angle in the image capturing optical lens set is HFOV, and the values are as follows: f = 6.74 millimeters (mm), Fno = 1.86, and HFOV = 41.3 degrees (deg.).

[0197] An Abbe number of the sixth lens 160 is V6, which satisfies the following condition: V6 = 39.5.

[0198] An Abbe number of the seventh lens 170 is V7, which satisfies the following condition: V7 = 36.1.

[0199] A minimum Abbe number of all the lenses in the image capturing optical lens set is Vmin, which satisfies the following condition: Vmin = 18.4. In the present embodiment, among the first lens 110 to the ninth lens 190, the Abbe number of the third lens 130 is smaller than the Abbe numbers of the other lenses, and thus Vmin is equal to the Abbe number of the third lens 130.

[0200] A maximum refractive index of all the lenses in the image capturing optical lens set is Nmax, which satisfies the following condition: Nmax = 1.686. In the present embodiment, among the first lens 110 to the ninth lens 190, the refractive index of the third lens 130 is greater than the refractive indices of the other lenses, and thus Nmax is equal to the refractive index of the third lens 130.

[0201] The Abbe number of the first lens 110 is V1, the Abbe number of the second lens 120 is V2, the Abbe number of the third lens 130 is V3, the Abbe number of the fourth lens 140 is V4, the Abbe number of the fifth lens 150 is V5, the Abbe number of the sixth lens 160 is V6, the Abbe number of the seventh lens 170 is V7, the Abbe number of the eighth lens 180 is V8, the Abbe number of the ninth lens 190 is V9, the Abbe number of the ith lens is Vi, the refractive index of the first lens 110 is N1, the refractive index of the second lens 120 is N2, the refractive index of the third lens 130 is N3, the refractive index of the fourth lens 140 is N4, the refractive index of the fifth lens 150 is N5, the refractive index of the sixth lens 160 is N6, the refractive index of the seventh lens 170 is N7, the refractive index of the eighth lens 180 is N8, the refractive index of the ninth lens 190 is N9, the refractive index of the ith lens is Ni, the minimum value of Vi / Ni is (Vi / Ni)min, which satisfies the following conditions: V1 / N1 = 36.31; V2 / N2 = 11.94; V3 / N3 = 10.91; V4 / N4 = 36.27; V5 / N5 = 36.27; V6 / N6 = 25.30; V7 / N7 = 22.91; V8 / N8 = 35.53; V9 / N9 = 36.27; and (Vi / Ni)min = 10.91, where i = 1, 2, 3, 4, 5, 6, 7, 8, or 9. In this embodiment, among the first lens 110 to the ninth lens 190, the ratio of the Abbe number to the refractive index of the third lens 130 is smaller than the ratio of the Abbe number to the refractive index of the remaining lenses, and thus (Vi / Ni)min is equal to the ratio of the Abbe number to the refractive index of the third lens 130.

[0202] The Abbe number of the first lens 110 is V1, the Abbe number of the second lens 120 is V2, the Abbe number of the third lens 130 is V3, which satisfies the following condition: (V2+V3) / V1 = 0.68.

[0203] The maximum value of the thickness on the optical axis of all the lenses of the imaging optical lens assembly is CTmax, and the minimum value of the thickness on the optical axis of all the lenses of the imaging optical lens assembly is CTmin, which satisfies the following condition: CTmax / CTmin = 3.87. In this embodiment, among the first lens 110 to the ninth lens 190, the thickness of the first lens 110 on the optical axis is greater than the thickness of the remaining lenses on the optical axis, and thus CTmax is equal to the thickness of the first lens 110 on the optical axis; the thickness of the second lens 120 on the optical axis is smaller than the thickness of the remaining lenses on the optical axis, and thus CTmin is equal to the thickness of the second lens 120 on the optical axis.

[0204] A sum of thicknesses of all lenses in the optical lens set for image capturing on the optical axis is ΣCT, and a sum of separation distances of all adjacent lenses in the optical lens set for image capturing on the optical axis is ΣAT, which satisfy the following condition: ΣCT / ΣAT = 1.68. In the embodiment, ΣCT is a sum of thicknesses of the first lens 110, the second lens 120, the third lens 130, the fourth lens 140, the fifth lens 150, the sixth lens 160, the seventh lens 170, the eighth lens 180, and the ninth lens 190 on the optical axis; ΣAT is a sum of separation distances between any two adjacent lenses among the first lens 110, the second lens 120, the third lens 130, the fourth lens 140, the fifth lens 150, the sixth lens 160, the seventh lens 170, the eighth lens 180, and the ninth lens 190 on the optical axis; in addition, the separation distance between two adjacent lenses on the optical axis refers to a distance between two adjacent lens surfaces of the two adjacent lenses on the optical axis.

[0205] A sum of separation distances of all adjacent lenses in the optical lens set for image capturing on the optical axis is ΣAT, a separation distance between the second lens 120 and the third lens 130 on the optical axis is T23, and a separation distance between the eighth lens 180 and the ninth lens 190 on the optical axis is T89, which satisfy the following condition: ΣAT / (T23+T89) = 1.84.

[0206] A maximum imaging height of the optical lens set for image capturing is ImgH, and a maximum value of thicknesses of all lenses in the optical lens set for image capturing on the optical axis is CTmax, which satisfy the following condition: ImgH / CTmax = 6.34.

[0207] The eighth lens 180 and the ninth lens 190 have an air lens ALE therebetween, a curvature radius of an object-side surface of the air lens is Rao, and a curvature radius of an image-side surface of the air lens is Rai, which satisfy the following condition: (Rao+Rai) / (Rao-Rai) = 0.16.

[0208] A curvature radius of the object-side surface 191 of the ninth lens is R17, and a curvature radius of the image-side surface 192 of the ninth lens is R18, which satisfy the following condition: (R17+R18) / (R17-R18) = 0.17.

[0209] A curvature radius of the object-side surface 191 of the ninth lens is R17, and a curvature radius of the image-side surface 192 of the ninth lens is R18, which satisfy the following condition: |R17 / R18| = 1.40.

[0210] A focal length of the optical lens set for image capturing is f, and a focal length of the first lens 110 is f1, which satisfy the following condition: f / f1 = 1.28.

[0211] A focal length of the imaging optical lens set is f, a focal length of the eighth lens 180 is f8, and the following condition is satisfied: f / f8=0.90.

[0212] A refractive power of the first lens 110 is P1, a refractive power of the second lens 120 is P2, a refractive power of the third lens 130 is P3, a refractive power of the fourth lens 140 is P4, a refractive power of the fifth lens 150 is P5, a refractive power of the sixth lens 160 is P6, a refractive power of the seventh lens 170 is P7, a refractive power of the eighth lens 180 is P8, and a refractive power of the ninth lens 190 is P9, and the following condition is satisfied: (|P2|+|P3|+|P4|+|P5|+|P6|+|P7|) / (|P1|+|P8|+|P9|)=0.49.

[0213] A distance on the optical axis between the first lens object side surface 111 and the ninth lens image side surface 192 is TD, a distance on the optical axis between the ninth lens image side surface 192 and the imaging surface 196 is BL, and a maximum imaging height of the imaging optical lens set is ImgH, and the following condition is satisfied: (TD×BL) / (ImgH×ImgH)=0.18.

[0214] A distance on the optical axis between the ninth lens image side surface 192 and the imaging surface 196 is BL, and a distance on the optical axis between the first lens object side surface 111 and the ninth lens image side surface 192 is TD, and the following condition is satisfied: BL / TD=0.15.

[0215] A maximum imaging height of the imaging optical lens set is ImgH, and a distance on the optical axis between the ninth lens image side surface 192 and the imaging surface 196 is BL, and the following condition is satisfied: ImgH / BL=6.03.

[0216] An entrance pupil diameter of the imaging optical lens set is EPD, and a distance on the optical axis between the ninth lens image side surface 192 and the imaging surface 196 is BL, and the following condition is satisfied: EPD / BL=3.56.

[0217] A focal length of the imaging optical lens set is f, and an entrance pupil diameter of the imaging optical lens set is EPD, and the following condition is satisfied: f / EPD=1.86.

[0218] A maximum effective radius of the third lens object side surface 131 is Y31, and a maximum effective radius of the ninth lens image side surface 192 is Y92, and the following condition is satisfied: Y92 / Y31=3.29.

[0219] A vertical distance between a critical point of the seventh lens image side surface 172 and the optical axis is Yc72, and a focal length of the imaging optical lens set is f, and the following condition is satisfied: Yc72 / f=0.19.

[0220] A perpendicular distance between a critical point of the eighth lens image side surface 182 and the optical axis is Yc82, and a focal length of the imaging optical lens group is f, and the following condition is satisfied: Yc82 / f = 0.23.

[0221] A perpendicular distance between a critical point of the ninth lens image side surface 192 and the optical axis is Yc92, and a focal length of the imaging optical lens group is f, and the following condition is satisfied: Yc92 / f = 0.20.

[0222] A distance on the optical axis between the stop 100 and the imaging surface 196 is SL, and a distance on the optical axis between the first lens object side surface 111 and the imaging surface 196 is TL, and the following condition is satisfied: SL / TL = 0.90.

[0223] A distance on the optical axis between the first lens object side surface 111 and the imaging surface 196 is TL, and a focal length of the imaging optical lens group is f, and the following condition is satisfied: TL / f = 1.16.

[0224] A distance on the optical axis between the first lens object side surface 111 and the imaging surface 196 is TL, and a maximum image height of the imaging optical lens group is ImgH, and the following condition is satisfied: TL / ImgH = 1.28.

[0225] A maximum image height of the imaging optical lens group is ImgH, and the following condition is satisfied: ImgH = 6.13 [mm].

[0226] A distance on the optical axis between the first lens object side surface 111 and the imaging surface 196 is TL, and the following condition is satisfied: TL = 7.82 [mm].

[0227] The focal length of the imaging optical lens set is f, the radius of curvature of the first lens object side surface 111 is R1, the radius of curvature of the first lens image side surface 112 is R2, the radius of curvature of the second lens object side surface 121 is R3, the radius of curvature of the second lens image side surface 122 is R4, the radius of curvature of the third lens object side surface 131 is R5, the radius of curvature of the third lens image side surface 132 is R6, the radius of curvature of the fourth lens object side surface 141 is R7, the radius of curvature of the fourth lens image side surface 142 is R8, the radius of curvature of the fifth lens object side surface 151 is R9, the radius of curvature of the fifth lens image side surface 152 is R10, the radius of curvature of the sixth lens object side surface 161 is R11, the radius of curvature of the sixth lens image side surface 162 is R12, the radius of curvature of the seventh lens object side surface 171 is R13, the radius of curvature of the seventh lens image side surface 172 is R14, the radius of curvature of the eighth lens object side surface 181 is R15, the radius of curvature of the eighth lens image side surface 182 is R16, the radius of curvature of the ninth lens object side surface 191 is R17, the radius of curvature of the ninth lens image side surface 192 is R18, the radius of curvature of any lens object side surface is Ro, the radius of curvature of any lens image side surface is Ri, and the following conditions are satisfied: |f / R1|+|f / R2|=3.16; |f / R3|+|f / R4|=1.96; |f / R5|+|f / R6|=0.94; |f / R7|+|f / R8|=0.28; |f / R9|+|f / R10|=0.91; |f / R11|+|f / R12|=0.74; |f / R13|+|f / R14|=2.08; |f / R15|+|f / R16|=3.04; and |f / R17|+|f / R18|=2.39, wherein the fourth lens 140 satisfies the following condition: |f / Ro|+|f / Ri|<0.50.

[0228] Please refer to Table 1 and Table 2.

[0229]

[0230]

[0231]

[0232]

[0233] Table 1 is FIG. 3The detailed structure data of the first embodiment is shown in Table 1, wherein the units of the radius of curvature, the thickness and the focal length are millimeters (mm), and the surfaces 0 to 23 represent the surfaces from the object side to the image side in sequence. Table 2 is the aspheric surface data of the first embodiment, wherein k is the conic coefficient in the aspheric surface equation, and A4 to A20 represent the aspheric surface coefficients of the 4th to 20th orders of each surface. In addition, the following tables of each embodiment correspond to the schematic diagram and the aberration curve diagram of each embodiment, and the definitions of the data in the tables are the same as those of Table 1 and Table 2 of the first embodiment, which will not be described herein.

[0234] <Second Embodiment>

[0235] Please refer to FIG. 4 , wherein FIG. 3 a schematic diagram of an image capturing device according to the second embodiment of the present application is shown, FIG. 5 to FIG. 6 The curve diagrams from left to right are the spherical aberration, the astigmatism and the distortion of the second embodiment. It can be seen that FIG. 5 The image capturing device includes an image capturing optical lens assembly (not labeled) and an electronic photosensitive element 299. The image capturing optical lens assembly includes, in sequence from the object side to the image side along the optical path, a first lens 210, an aperture 200, a second lens 220, a third lens 230, a fourth lens 240, a diaphragm 201, a fifth lens 250, a sixth lens 260, a seventh lens 270, an eighth lens 280, a ninth lens 290, a filter element 293 and an imaging surface 296. The image capturing optical lens assembly has a configuration of a first lens group (the first lens 210, the second lens 220 and the third lens 230), a second lens group (the fourth lens 240, the fifth lens 250 and the sixth lens 260) and a third lens group (the seventh lens 270, the eighth lens 280 and the ninth lens 290). The electronic photosensitive element 299 is arranged on the imaging surface 296. The image capturing optical lens assembly includes nine lenses (210, 220, 230, 240, 250, 260, 270, 280, 290), and there is no other lens interposed between the lenses.

[0236] The first lens 210 has positive refractive power and is made of plastic. The object side surface 211 thereof is convex at the vicinity of the optical axis, and the image side surface 212 thereof is concave at the vicinity of the optical axis. Both surfaces are aspheric surfaces. The object side surface 211 has a point of inflection, and the image side surface 212 has a point of inflection.

[0237] The second lens 220 has negative refractive power and is made of plastic. The object side surface 221 thereof is convex at the vicinity of the optical axis, and the image side surface 222 thereof is concave at the vicinity of the optical axis. Both surfaces are aspheric surfaces.

[0238] The third lens 230 has positive refractive power and is made of plastic material. The object side surface 231 thereof is convex at the vicinity of the optical axis, and the image side surface 232 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces. The object side surface 231 thereof has one inflection point, and the image side surface 232 thereof has two inflection points.

[0239] The fourth lens 240 has negative refractive power and is made of plastic material. The object side surface 241 thereof is concave at the vicinity of the optical axis, and the image side surface 242 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces. The object side surface 241 thereof has three inflection points, and the image side surface 242 thereof has two inflection points.

[0240] The fifth lens 250 has positive refractive power and is made of plastic material. The object side surface 251 thereof is convex at the vicinity of the optical axis, and the image side surface 252 thereof is convex at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces. The object side surface 251 thereof has three inflection points, and the image side surface 252 thereof has two inflection points.

[0241] The sixth lens 260 has negative refractive power and is made of plastic material. The object side surface 261 thereof is concave at the vicinity of the optical axis, and the image side surface 262 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces. The object side surface 261 thereof has two inflection points, and the image side surface 262 thereof has three inflection points.

[0242] The seventh lens 270 has negative refractive power and is made of plastic material. The object side surface 271 thereof is convex at the vicinity of the optical axis, and the image side surface 272 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces. The object side surface 271 thereof has three inflection points, and the image side surface 272 thereof has three inflection points. The object side surface 271 thereof has at least one critical point at the off-axis region, and the image side surface 272 thereof has at least one critical point at the off-axis region.

[0243] The eighth lens 280 has positive refractive power and is made of plastic material. The object side surface 281 thereof is convex at the vicinity of the optical axis, and the image side surface 282 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces. The object side surface 281 thereof has two inflection points, and the image side surface 282 thereof has two inflection points. The object side surface 281 thereof has at least one critical point at the off-axis region, and the image side surface 282 thereof has at least one critical point at the off-axis region.

[0244] The ninth lens 290 has negative refractive power and is made of plastic material. The object side surface 291 thereof is concave at the vicinity of the optical axis, and the image side surface 292 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces. The object side surface 291 thereof has two inflection points, and the image side surface 292 thereof has three inflection points. The object side surface 291 thereof has at least one critical point at the off-axis region, and the image side surface 292 thereof has at least one critical point at the off-axis region.

[0245] The filter element 293 is made of glass and is located between the ninth lens 290 and the imaging surface 296. It does not affect the focal length of the optical lens group used for image acquisition.

[0246] Please refer to Table 3 and Table 4 below.

[0247]

[0248]

[0249]

[0250] In the second embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0251]

[0252] <Third Embodiment>

[0253] Please refer to FIG. 6 ,in FIG. 5 A schematic diagram of an image-capturing device according to a third embodiment of the present invention is shown. FIG. 7 to FIG. 8 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the third embodiment. FIG. 7 As can be seen, the image capturing device includes an image capturing optical lens group (unlabeled) and an electronic photosensitive element 399. The image capturing optical lens group, arranged sequentially from the object side to the image side along the optical path, includes an aperture 300, a first lens 310, a second lens 320, a third lens 330, an aperture stop 301, a fourth lens 340, a fifth lens 350, a sixth lens 360, a seventh lens 370, an eighth lens 380, a ninth lens 390, a filter element 393, and an imaging surface 396. The image capturing optical lens group is configured with a first lens group (first lens 310, second lens 320, and third lens 330), a second lens group (fourth lens 340, fifth lens 350, and sixth lens 360), and a third lens group (seventh lens 370, eighth lens 380, and ninth lens 390). The electronic photosensitive element 399 is disposed on the imaging surface 396. The image-taking optical lens group consists of nine lenses (310, 320, 330, 340, 350, 360, 370, 380, 390), and there are no other interposed lenses between each lens.

[0254] 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. Its object-side surface 311 has a point of inflection, and its image-side surface 312 has a point of inflection.

[0255] The second lens 320 has a negative refractive power and is made of plastic material. The object-side surface 321 of the second lens 320 is convex at the vicinity of the optical axis, and the image-side surface 322 of the second lens 320 is concave at the vicinity of the optical axis. Both the object-side surface 321 and the image-side surface 322 of the second lens 320 are aspheric surfaces.

[0256] The third lens 330 has a negative refractive power and is made of plastic material. The object-side surface 331 of the third lens 330 is convex at the vicinity of the optical axis, and the image-side surface 332 of the third lens 330 is concave at the vicinity of the optical axis. Both the object-side surface 331 and the image-side surface 332 of the third lens 330 are aspheric surfaces. The object-side surface 331 of the third lens 330 has one inflection point, and the image-side surface 332 of the third lens 330 has two inflection points.

[0257] The fourth lens 340 has a negative refractive power and is made of plastic material. The object-side surface 341 of the fourth lens 340 is convex at the vicinity of the optical axis, and the image-side surface 342 of the fourth lens 340 is concave at the vicinity of the optical axis. Both the object-side surface 341 and the image-side surface 342 of the fourth lens 340 are aspheric surfaces. The object-side surface 341 of the fourth lens 340 has three inflection points, and the image-side surface 342 of the fourth lens 340 has three inflection points.

[0258] The fifth lens 350 has a positive refractive power and is made of plastic material. The object-side surface 351 of the fifth lens 350 is convex at the vicinity of the optical axis, and the image-side surface 352 of the fifth lens 350 is convex at the vicinity of the optical axis. Both the object-side surface 351 and the image-side surface 352 of the fifth lens 350 are aspheric surfaces. The object-side surface 351 of the fifth lens 350 has three inflection points, and the image-side surface 352 of the fifth lens 350 has two inflection points.

[0259] The sixth lens 360 has a negative refractive power and is made of plastic material. The object-side surface 361 of the sixth lens 360 is concave at the vicinity of the optical axis, and the image-side surface 362 of the sixth lens 360 is convex at the vicinity of the optical axis. Both the object-side surface 361 and the image-side surface 362 of the sixth lens 360 are aspheric surfaces. The object-side surface 361 of the sixth lens 360 has two inflection points, and the image-side surface 362 of the sixth lens 360 has two inflection points.

[0260] The seventh lens 370 has a negative refractive power and is made of plastic material. The object-side surface 371 of the seventh lens 370 is convex at the vicinity of the optical axis, and the image-side surface 372 of the seventh lens 370 is concave at the vicinity of the optical axis. Both the object-side surface 371 and the image-side surface 372 of the seventh lens 370 are aspheric surfaces. The object-side surface 371 of the seventh lens 370 has three inflection points, and the image-side surface 372 of the seventh lens 370 has five inflection points. The object-side surface 371 of the seventh lens 370 has at least one critical point at the off-axis region, and the image-side surface 372 of the seventh lens 370 has at least one critical point at the off-axis region.

[0261] The eighth lens 380 has a positive refractive power and is made of plastic material. The object-side surface 381 of the eighth lens 380 is convex at the vicinity of the optical axis, and the image-side surface 382 of the eighth lens 380 is concave at the vicinity of the optical axis. Both the object-side surface 381 and the image-side surface 382 of the eighth lens 380 are aspheric surfaces. The object-side surface 381 of the eighth lens 380 has two inflection points, and the image-side surface 382 of the eighth lens 380 has two inflection points. The object-side surface 381 of the eighth lens 380 has at least one critical point at the off-axis region, and the image-side surface 382 of the eighth lens 380 has at least one critical point at the off-axis region.

[0262] The ninth lens 390 has a negative refractive power and is made of plastic. The object-side surface 391 of the ninth lens 390 is concave at the vicinity of the optical axis, and the image-side surface 392 of the ninth lens 390 is concave at the vicinity of the optical axis. Both the object-side surface 391 and the image-side surface 392 of the ninth lens 390 are aspheric surfaces. The object-side surface 391 of the ninth lens 390 has three inflection points, and the image-side surface 392 of the ninth lens 390 has three inflection points. The object-side surface 391 of the ninth lens 390 has at least one critical point at the off-axis region, and the image-side surface 392 of the ninth lens 390 has at least one critical point at the off-axis region.

[0263] The filter element 393 is made of glass and is disposed between the ninth lens 390 and the imaging plane 396, and does not affect the focal length of the imaging optical lens.

[0264] Please refer to the following Table 5 and Table 6.

[0265]

[0266]

[0267]

[0268]

[0269] In the third embodiment, the aspheric surface is represented by a curve equation in the form of the first embodiment. In addition, the definitions described in the following tables are the same as those of the first embodiment, and are not described herein.

[0270]

[0271]

[0272] FOURTH EMBODIMENT

[0273] Please refer to FIG. 8 wherein FIG. 7 A schematic diagram of an imaging device according to the fourth embodiment of the present application is shown in FIG. 4. FIG. 9 to FIG. 10 The left-to-right sequence of the graphs in FIG. 4 is the spherical aberration, the astigmatism, and the distortion of the fourth embodiment. The spherical aberration of the fourth embodiment is shown in FIG. 4A. FIG. 9It is known that the image capturing device includes an image capturing optical lens assembly (not labeled separately) and an electronic photosensitive element 499. The image capturing optical lens assembly includes, in order from the object side to the image side along the optical path, an aperture 400, a first lens 410, a second lens 420, a third lens 430, a fourth lens 440, a fifth lens 450, a sixth lens 460, a seventh lens 470, an eighth lens 480, a ninth lens 490, a diaphragm 401, a filter element 493, and an imaging surface 496. The image capturing optical lens assembly has a first lens group (the first lens 410, the second lens 420, and the third lens 430), a second lens group (the fourth lens 440, the fifth lens 450, and the sixth lens 460), and a third lens group (the seventh lens 470, the eighth lens 480, and the ninth lens 490). The electronic photosensitive element 499 is disposed on the imaging surface 496. The image capturing optical lens assembly includes nine lenses (410, 420, 430, 440, 450, 460, 470, 480, 490) and no other lenses are interposed between the lenses.

[0274] The first lens 410 has positive refractive power and is made of plastic. The object side surface 411 thereof is convex at the vicinity of the optical axis, and the image side surface 412 thereof is concave at the vicinity of the optical axis. Both surfaces are aspherical. The object side surface 411 has one inflection point, and the image side surface 412 has one inflection point.

[0275] The second lens 420 has negative refractive power and is made of plastic. The object side surface 421 thereof is convex at the vicinity of the optical axis, and the image side surface 422 thereof is concave at the vicinity of the optical axis. Both surfaces are aspherical.

[0276] The third lens 430 has negative refractive power and is made of plastic. The object side surface 431 thereof is convex at the vicinity of the optical axis, and the image side surface 432 thereof is concave at the vicinity of the optical axis. Both surfaces are aspherical. The object side surface 431 has one inflection point, and the image side surface 432 has two inflection points.

[0277] The fourth lens 440 has positive refractive power and is made of plastic. The object side surface 441 thereof is concave at the vicinity of the optical axis, and the image side surface 442 thereof is convex at the vicinity of the optical axis. Both surfaces are aspherical. The object side surface 441 has three inflection points, and the image side surface 442 has one inflection point.

[0278] The fifth lens 450 has positive refractive power and is made of plastic. The object side surface 451 thereof is concave at the vicinity of the optical axis, and the image side surface 452 thereof is convex at the vicinity of the optical axis. Both surfaces are aspherical. The object side surface 451 has two inflection points, and the image side surface 452 has two inflection points.

[0279] The sixth lens 460 has negative refractive power and is made of plastic material. The object-side surface 461 thereof is concave at the vicinity of the optical axis, and the image-side surface 462 thereof is convex at the vicinity of the optical axis. Both surfaces are aspherical. The object-side surface 461 has one inflection point, and the image-side surface 462 has two inflection points.

[0280] The seventh lens 470 has negative refractive power and is made of plastic material. The object-side surface 471 thereof is convex at the vicinity of the optical axis, and the image-side surface 472 thereof is concave at the vicinity of the optical axis. Both surfaces are aspherical. The object-side surface 471 has two inflection points, and the image-side surface 472 has one inflection point. The object-side surface 471 has at least one critical point at the off-axis region, and the image-side surface 472 has at least one critical point at the off-axis region.

[0281] The eighth lens 480 has positive refractive power and is made of plastic material. The object-side surface 481 thereof is convex at the vicinity of the optical axis, and the image-side surface 482 thereof is concave at the vicinity of the optical axis. Both surfaces are aspherical. The object-side surface 481 has two inflection points, and the image-side surface 482 has two inflection points. The object-side surface 481 has at least one critical point at the off-axis region, and the image-side surface 482 has at least one critical point at the off-axis region.

[0282] The ninth lens 490 has negative refractive power and is made of plastic material. The object-side surface 491 thereof is concave at the vicinity of the optical axis, and the image-side surface 492 thereof is concave at the vicinity of the optical axis. Both surfaces are aspherical. The object-side surface 491 has three inflection points, and the image-side surface 492 has three inflection points. The image-side surface 492 has at least one critical point at the off-axis region.

[0283] The filter element 493 is made of glass and is disposed between the stop 401 and the imaging plane 496, and does not affect the focal length of the imaging optical lens.

[0284] Please refer to the following Table 7 and Table 8.

[0285]

[0286]

[0287]

[0288]

[0289] In the fourth embodiment, the aspherical surface is expressed in the form of the first embodiment. In addition, the definitions described in the following tables are the same as those of the first embodiment, and are not described herein.

[0290]

[0291]

[0292] <Fifth Embodiment>

[0293] Please refer to FIG. 10 ,in FIG. 9 A schematic diagram of an image-capturing device according to a fifth embodiment of the present invention is shown. FIG. 11 to FIG. 12 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fifth embodiment. FIG. 11 As can be seen, the image capturing device includes an image capturing optical lens group (unlabeled) and an electronic photosensitive element 599. The image capturing optical lens group, arranged sequentially from the object side to the image side along the optical path, includes an aperture 500, a first lens 510, a second lens 520, a third lens 530, a fourth lens 540, a fifth lens 550, a sixth lens 560, a seventh lens 570, an eighth lens 580, a ninth lens 590, an aperture stop 501, a filter element 593, and an imaging surface 596. The image capturing optical lens group is configured with a first lens group (first lens 510, second lens 520, and third lens 530), a second lens group (fourth lens 540, fifth lens 550, and sixth lens 560), and a third lens group (seventh lens 570, eighth lens 580, and ninth lens 590). The electronic photosensitive element 599 is disposed on the imaging surface 596. The image-capturing optical lens group comprises nine lenses (510, 520, 530, 540, 550, 560, 570, 580, 590), and there are no other interposed lenses between each lens.

[0294] 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 a point of inflection, and its image-side surface 512 has a point of inflection.

[0295] The second lens 520 has negative refractive power and is made of plastic. Its object-side surface 521 is convex near the optical axis, and its image-side surface 522 is concave near the optical axis. Both of its surfaces are aspherical.

[0296] The third lens 530 has negative 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 one inflection point, and its image-side surface 532 has two inflection points.

[0297] The fourth lens 540 has positive refractive power and is made of plastic. Its object-side surface 541 is concave 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 a point of inflection, and its image-side surface 542 has a point of inflection.

[0298] The fifth lens 550 has positive refractive power and is made of plastic material. The object-side surface 551 thereof is concave near the optical axis, and the image-side surface 552 thereof is convex near the optical axis. Both surfaces are aspherical. The object-side surface 551 has two inflection points, and the image-side surface 552 has two inflection points.

[0299] The sixth lens 560 has negative refractive power and is made of plastic material. The object-side surface 561 thereof is concave near the optical axis, and the image-side surface 562 thereof is convex near the optical axis. Both surfaces are aspherical. The object-side surface 561 has one inflection point, and the image-side surface 562 has one inflection point.

[0300] The seventh lens 570 has negative refractive power and is made of plastic material. The object-side surface 571 thereof is convex near the optical axis, and the image-side surface 572 thereof is concave near the optical axis. Both surfaces are aspherical. The object-side surface 571 has two inflection points, and the image-side surface 572 has one inflection point. The object-side surface 571 has at least one critical point away from the optical axis, and the image-side surface 572 has at least one critical point away from the optical axis.

[0301] The eighth lens 580 has positive refractive power and is made of plastic material. The object-side surface 581 thereof is convex near the optical axis, and the image-side surface 582 thereof is convex near the optical axis. Both surfaces are aspherical. The object-side surface 581 has two inflection points, and the image-side surface 582 has one inflection point. The object-side surface 581 has at least one critical point away from the optical axis.

[0302] The ninth lens 590 has negative refractive power and is made of plastic material. The object-side surface 591 thereof is concave near the optical axis, and the image-side surface 592 thereof is concave near the optical axis. Both surfaces are aspherical. The object-side surface 591 has two inflection points, and the image-side surface 592 has three inflection points. The object-side surface 591 has at least one critical point away from the optical axis, and the image-side surface 592 has at least one critical point away from the optical axis.

[0303] The filter element 593 is made of glass and is disposed between the stop 501 and the imaging surface 596, and does not affect the focal length of the imaging optical lens assembly.

[0304] Please refer to the following Table IX and Table X.

[0305]

[0306]

[0307]

[0308]

[0309] In the fifth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0310]

[0311]

[0312] <Sixth Embodiment>

[0313] Please refer to FIG. 12 ,in FIG. 11 A schematic diagram of an image-capturing device according to a sixth embodiment of the present invention is shown. FIG. 13 to FIG. 14 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the sixth embodiment. FIG. 13 As can be seen, the image capturing device includes an image capturing optical lens group (unlabeled) and an electronic photosensitive element 699. The image capturing optical lens group, arranged sequentially from the object side to the image side along the optical path, includes an aperture 600, a first lens 610, a second lens 620, a third lens 630, a fourth lens 640, a fifth lens 650, a sixth lens 660, a seventh lens 670, an eighth lens 680, a ninth lens 690, an aperture stop 601, a filter element 693, and an imaging surface 696. The image capturing optical lens group is configured with a first lens group (first lens 610, second lens 620, and third lens 630), a second lens group (fourth lens 640, fifth lens 650, and sixth lens 660), and a third lens group (seventh lens 670, eighth lens 680, and ninth lens 690). The electronic photosensitive element 699 is disposed on the imaging surface 696. The image-taking optical lens group comprises nine lenses (610, 620, 630, 640, 650, 660, 670, 680, 690), and there are no other interposed lenses between each lens.

[0314] 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. Its object-side surface 611 has a point of inflection, and its image-side surface 612 has a point of inflection.

[0315] 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.

[0316] The third lens 630 has negative 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 surfaces are aspherical. Its object-side surface 631 has one inflection point, and its image-side surface 632 has two inflection points.

[0317] The fourth lens 640 has positive refractive power and is made of plastic material. The object-side surface 641 thereof is concave near the optical axis, and the image-side surface 642 thereof is convex near the optical axis. Both surfaces are aspherical. The object-side surface 641 has three inflection points, and the image-side surface 642 has one inflection point.

[0318] The fifth lens 650 has positive refractive power and is made of plastic material. The object-side surface 651 thereof is convex near the optical axis, and the image-side surface 652 thereof is convex near the optical axis. Both surfaces are aspherical, and the object-side surface 651 has three inflection points.

[0319] The sixth lens 660 has negative refractive power and is made of plastic material. The object-side surface 661 thereof is concave near the optical axis, and the image-side surface 662 thereof is concave near the optical axis. Both surfaces are aspherical, and the image-side surface 662 has three inflection points.

[0320] The seventh lens 670 has positive refractive power and is made of plastic material. The object-side surface 671 thereof is convex near the optical axis, and the image-side surface 672 thereof is concave near the optical axis. Both surfaces are aspherical. The object-side surface 671 has two inflection points, and the image-side surface 672 has one inflection point. The object-side surface 671 has at least one critical point off the optical axis, and the image-side surface 672 has at least one critical point off the optical axis.

[0321] The eighth lens 680 has positive refractive power and is made of plastic material. The object-side surface 681 thereof is convex near the optical axis, and the image-side surface 682 thereof is concave near the optical axis. Both surfaces are aspherical. The object-side surface 681 has two inflection points, and the image-side surface 682 has two inflection points. The object-side surface 681 has at least one critical point off the optical axis, and the image-side surface 682 has at least one critical point off the optical axis.

[0322] The ninth lens 690 has negative refractive power and is made of plastic material. The object-side surface 691 thereof is concave near the optical axis, and the image-side surface 692 thereof is concave near the optical axis. Both surfaces are aspherical. The object-side surface 691 has two inflection points, and the image-side surface 692 has three inflection points. The object-side surface 691 has at least one critical point off the optical axis, and the image-side surface 692 has at least one critical point off the optical axis.

[0323] The filter element 693 is made of glass and is disposed between the stop 601 and the imaging surface 696, without affecting the focal length of the imaging optical lens assembly.

[0324] Please refer to Table XI and Table XII below.

[0325]

[0326]

[0327]

[0328]

[0329] In the sixth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0330]

[0331]

[0332] <Seventh Embodiment>

[0333] Please refer to FIG. 14 ,in FIG. 13 A schematic diagram of an image-capturing device according to a seventh embodiment of the present invention is shown. FIG. 15 to FIG. 16 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the seventh embodiment. FIG. 15 As can be seen, the image capturing device includes an image capturing optical lens group (unlabeled) and an electronic photosensitive element 799. The image capturing optical lens group, arranged sequentially from the object side to the image side along the optical path, includes an aperture 700, a first lens 710, a second lens 720, a third lens 730, an aperture stop 701, a fourth lens 740, a fifth lens 750, a sixth lens 760, a seventh lens 770, an eighth lens 780, a ninth lens 790, a filter element 793, and an imaging surface 796. The image capturing optical lens group is configured with a first lens group (first lens 710, second lens 720, and third lens 730), a second lens group (fourth lens 740, fifth lens 750, and sixth lens 760), and a third lens group (seventh lens 770, eighth lens 780, and ninth lens 790). The electronic photosensitive element 799 is disposed on the imaging surface 796. The image-taking optical lens group consists of nine lenses (710, 720, 730, 740, 750, 760, 770, 780, 790), and there are no other interposed lenses between each lens.

[0334] 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. Its object-side surface 711 has a point of inflection, and its image-side surface 712 has a point of inflection.

[0335] 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 of its surfaces are aspherical.

[0336] The third lens 730 has negative refractive power and is made of plastic material. The object-side surface 731 thereof is concave near the optical axis, and the image-side surface 732 thereof is concave near the optical axis. Both surfaces are aspherical, and the image-side surface 732 thereof has two inflection points.

[0337] The fourth lens 740 has positive refractive power and is made of plastic material. The object-side surface 741 thereof is convex near the optical axis, and the image-side surface 742 thereof is concave near the optical axis. Both surfaces are aspherical, the object-side surface 741 thereof has two inflection points, and the image-side surface 742 thereof has two inflection points.

[0338] The fifth lens 750 has positive refractive power and is made of plastic material. The object-side surface 751 thereof is convex near the optical axis, and the image-side surface 752 thereof is convex near the optical axis. Both surfaces are aspherical, and the object-side surface 751 thereof has three inflection points.

[0339] The sixth lens 760 has negative refractive power and is made of plastic material. The object-side surface 761 thereof is concave near the optical axis, and the image-side surface 762 thereof is convex near the optical axis. Both surfaces are aspherical, and the image-side surface 762 thereof has one inflection point.

[0340] The seventh lens 770 has negative refractive power and is made of plastic material. The object-side surface 771 thereof is convex near the optical axis, and the image-side surface 772 thereof is concave near the optical axis. Both surfaces are aspherical, the object-side surface 771 thereof has two inflection points, the image-side surface 772 thereof has one inflection point, the object-side surface 771 thereof has at least one critical point off the optical axis, and the image-side surface 772 thereof has at least one critical point off the optical axis.

[0341] The eighth lens 780 has positive refractive power and is made of plastic material. The object-side surface 781 thereof is convex near the optical axis, and the image-side surface 782 thereof is concave near the optical axis. Both surfaces are aspherical, the object-side surface 781 thereof has two inflection points, the image-side surface 782 thereof has two inflection points, the object-side surface 781 thereof has at least one critical point off the optical axis, and the image-side surface 782 thereof has at least one critical point off the optical axis.

[0342] The ninth lens 790 has negative refractive power and is made of plastic material. The object-side surface 791 thereof is concave near the optical axis, and the image-side surface 792 thereof is concave near the optical axis. Both surfaces are aspherical, the object-side surface 791 thereof has one inflection point, the image-side surface 792 thereof has two inflection points, and the image-side surface 792 thereof has at least one critical point off the optical axis.

[0343] The filter element 793 is made of glass and is disposed between the ninth lens 790 and the imaging surface 796 without affecting the focal length of the imaging optical lens assembly.

[0344] Please refer to Tables 13 and 14 below.

[0345]

[0346]

[0347]

[0348] In the seventh embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0349]

[0350]

[0351] <Eighth Embodiment>

[0352] Please refer to FIG. 16 ,in FIG. 15 A schematic diagram of an image-capturing device according to an eighth embodiment of the present invention is shown. FIG. 17 to FIG. 18 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the eighth embodiment. FIG. 17 As can be seen, the image capturing device includes an image capturing optical lens group (not otherwise labeled) and an electronic photosensitive element 899. The image capturing optical lens group, arranged sequentially from the object side to the image side along the optical path, includes an aperture 800, a first lens 810, a second lens 820, a third lens 830, a fourth lens 840, an aperture stop 801, a fifth lens 850, a sixth lens 860, a seventh lens 870, an eighth lens 880, a ninth lens 890, a filter element 893, and an imaging surface 896. The image capturing optical lens group has a configuration of a first lens group (first lens 810, second lens 820, and third lens 830), a second lens group (fourth lens 840, fifth lens 850, and sixth lens 860), and a third lens group (seventh lens 870, eighth lens 880, and ninth lens 890). The electronic photosensitive element 899 is disposed on the imaging surface 896. The image-taking optical lens group consists of nine lenses (810, 820, 830, 840, 850, 860, 870, 880, 890), and there are no other interposed lenses between each lens.

[0353] The first lens 810 has positive refractive power and is made of plastic. Its object-side surface 811 is convex near the optical axis, and its image-side surface 812 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 811 has a point of inflection, and its image-side surface 812 has a point of inflection.

[0354] The second lens 820 has a negative refractive power and is made of plastic material. The object-side surface 821 of the second lens 820 is convex at the vicinity of the optical axis, and the image-side surface 822 of the second lens 820 is concave at the vicinity of the optical axis. Both the object-side surface 821 and the image-side surface 822 of the second lens 820 are aspheric surfaces.

[0355] The third lens 830 has a negative refractive power and is made of plastic material. The object-side surface 831 of the third lens 830 is convex at the vicinity of the optical axis, and the image-side surface 832 of the third lens 830 is concave at the vicinity of the optical axis. Both the object-side surface 831 and the image-side surface 832 of the third lens 830 are aspheric surfaces. The object-side surface 831 of the third lens 830 has one inflection point, and the image-side surface 832 of the third lens 830 has two inflection points.

[0356] The fourth lens 840 has a positive refractive power and is made of plastic material. The object-side surface 841 of the fourth lens 840 is concave at the vicinity of the optical axis, and the image-side surface 842 of the fourth lens 840 is convex at the vicinity of the optical axis. Both the object-side surface 841 and the image-side surface 842 of the fourth lens 840 are aspheric surfaces. The object-side surface 841 of the fourth lens 840 has one inflection point, and the image-side surface 842 of the fourth lens 840 has one inflection point.

[0357] The fifth lens 850 has a positive refractive power and is made of plastic material. The object-side surface 851 of the fifth lens 850 is convex at the vicinity of the optical axis, and the image-side surface 852 of the fifth lens 850 is convex at the vicinity of the optical axis. Both the object-side surface 851 and the image-side surface 852 of the fifth lens 850 are aspheric surfaces. The object-side surface 851 of the fifth lens 850 has three inflection points, and the image-side surface 852 of the fifth lens 850 has two inflection points.

[0358] The sixth lens 860 has a negative refractive power and is made of plastic material. The object-side surface 861 of the sixth lens 860 is concave at the vicinity of the optical axis, and the image-side surface 862 of the sixth lens 860 is concave at the vicinity of the optical axis. Both the object-side surface 861 and the image-side surface 862 of the sixth lens 860 are aspheric surfaces. The object-side surface 861 of the sixth lens 860 has four inflection points, and the image-side surface 862 of the sixth lens 860 has three inflection points.

[0359] The seventh lens 870 has a negative refractive power and is made of plastic material. The object-side surface 871 of the seventh lens 870 is convex at the vicinity of the optical axis, and the image-side surface 872 of the seventh lens 870 is concave at the vicinity of the optical axis. Both the object-side surface 871 and the image-side surface 872 of the seventh lens 870 are aspheric surfaces. The object-side surface 871 of the seventh lens 870 has three inflection points, and the image-side surface 872 of the seventh lens 870 has two inflection points. The object-side surface 871 of the seventh lens 870 has at least one critical point at the off-axis region, and the image-side surface 872 of the seventh lens 870 has at least one critical point at the off-axis region.

[0360] The eighth lens 880 has a positive refractive power and is made of plastic material. The object-side surface 881 of the eighth lens 880 is convex at the vicinity of the optical axis, and the image-side surface 882 of the eighth lens 880 is concave at the vicinity of the optical axis. Both the object-side surface 881 and the image-side surface 882 of the eighth lens 880 are aspheric surfaces. The object-side surface 881 of the eighth lens 880 has two inflection points, and the image-side surface 882 of the eighth lens 880 has two inflection points. The object-side surface 881 of the eighth lens 880 has at least one critical point at the off-axis region, and the image-side surface 882 of the eighth lens 880 has at least one critical point at the off-axis region.

[0361] The ninth lens 890 has negative refractive power and is made of plastic. Its object-side surface 891 is concave near the optical axis, and its image-side surface 892 is concave near the optical axis. Both surfaces are aspherical. The object-side surface 891 has three inflection points, and the image-side surface 892 has three inflection points. The object-side surface 891 has at least one critical point away from the optical axis, and the image-side surface 892 has at least one critical point away from the optical axis.

[0362] The filter element 893 is made of glass and is disposed between the ninth lens 890 and the imaging plane 896 without affecting the focal length of the imaging optical lens.

[0363] Please refer to Table XV and Table XVI below.

[0364]

[0365]

[0366]

[0367]

[0368] In the eighth embodiment, the aspherical surface is represented in the form of the first embodiment. In addition, the definitions described in the following tables are the same as those of the first embodiment, and are not described again here.

[0369]

[0370] <The ninth embodiment>

[0371] Please refer to FIG. 18 wherein FIG. 17 Fig. 9 shows a schematic diagram of an imaging device according to the ninth embodiment of the present application, FIG. 19 to FIG. 20 The left to right in order are the spherical aberration, astigmatism and distortion curves of the ninth embodiment. The left to right in order are the spherical aberration, astigmatism and distortion curves of the ninth embodiment. FIG. 19It is known that the image capturing device includes an image capturing optical lens assembly (not labeled separately) and an electronic photosensitive element 999. The image capturing optical lens assembly includes, in order from the object side to the image side along the optical path, an aperture 900, a first lens 910, a second lens 920, a third lens 930, a fourth lens 940, a fifth lens 950, a sixth lens 960, a diaphragm 901, a seventh lens 970, an eighth lens 980, a ninth lens 990, a filter element 993, and an imaging surface 996. The image capturing optical lens assembly has a first lens group (the first lens 910, the second lens 920, and the third lens 930), a second lens group (the fourth lens 940, the fifth lens 950, and the sixth lens 960), and a third lens group (the seventh lens 970, the eighth lens 980, and the ninth lens 990). The electronic photosensitive element 999 is disposed on the imaging surface 996. The image capturing optical lens assembly includes nine lenses (910, 920, 930, 940, 950, 960, 970, 980, 990) and no other lenses are interposed between the lenses.

[0372] The first lens 910 has positive refractive power and is made of plastic. The object side surface 911 thereof is convex at the vicinity of the optical axis, and the image side surface 912 thereof is concave at the vicinity of the optical axis. Both surfaces are aspherical. The object side surface 911 has one inflection point, and the image side surface 912 has one inflection point.

[0373] The second lens 920 has negative refractive power and is made of plastic. The object side surface 921 thereof is convex at the vicinity of the optical axis, and the image side surface 922 thereof is concave at the vicinity of the optical axis. Both surfaces are aspherical.

[0374] The third lens 930 has negative refractive power and is made of plastic. The object side surface 931 thereof is convex at the vicinity of the optical axis, and the image side surface 932 thereof is concave at the vicinity of the optical axis. Both surfaces are aspherical. The object side surface 931 has one inflection point, and the image side surface 932 has two inflection points.

[0375] The fourth lens 940 has positive refractive power and is made of plastic. The object side surface 941 thereof is convex at the vicinity of the optical axis, and the image side surface 942 thereof is concave at the vicinity of the optical axis. Both surfaces are aspherical. The object side surface 941 has two inflection points, and the image side surface 942 has two inflection points.

[0376] The fifth lens 950 has positive refractive power and is made of plastic. The object side surface 951 thereof is convex at the vicinity of the optical axis, and the image side surface 952 thereof is convex at the vicinity of the optical axis. Both surfaces are aspherical. The object side surface 951 has three inflection points, and the image side surface 952 has two inflection points.

[0377] The sixth lens 960 has negative refractive power and is made of plastic material. The object-side surface 961 thereof is concave at the vicinity of the optical axis, and the image-side surface 962 thereof is concave at the vicinity of the optical axis. Both surfaces are aspherical surfaces. The object-side surface 961 has four inflection points, and the image-side surface 962 has three inflection points.

[0378] The seventh lens 970 has negative refractive power and is made of plastic material. The object-side surface 971 thereof is convex at the vicinity of the optical axis, and the image-side surface 972 thereof is concave at the vicinity of the optical axis. Both surfaces are aspherical surfaces. The object-side surface 971 has three inflection points, and the image-side surface 972 has one inflection point. The object-side surface 971 has at least one critical point at the off-axis region, and the image-side surface 972 has at least one critical point at the off-axis region.

[0379] The eighth lens 980 has positive refractive power and is made of plastic material. The object-side surface 981 thereof is convex at the vicinity of the optical axis, and the image-side surface 982 thereof is concave at the vicinity of the optical axis. Both surfaces are aspherical surfaces. The object-side surface 981 has two inflection points, and the image-side surface 982 has two inflection points. The object-side surface 981 has at least one critical point at the off-axis region, and the image-side surface 982 has at least one critical point at the off-axis region.

[0380] The ninth lens 990 has negative refractive power and is made of plastic material. The object-side surface 991 thereof is concave at the vicinity of the optical axis, and the image-side surface 992 thereof is concave at the vicinity of the optical axis. Both surfaces are aspherical surfaces. The object-side surface 991 has two inflection points, and the image-side surface 992 has three inflection points. The object-side surface 991 has at least one critical point at the off-axis region, and the image-side surface 992 has at least one critical point at the off-axis region.

[0381] The filter element 993 is made of glass and is disposed between the ninth lens 990 and the imaging surface 996, and does not affect the focal length of the imaging optical lens.

[0382] Please refer to the following Table 17 and Table 18.

[0383]

[0384]

[0385]

[0386]

[0387] In the ninth embodiment, the aspherical surface is expressed in the form of the first embodiment. In addition, the definitions described in the following tables are the same as those of the first embodiment, and are not described herein.

[0388]

[0389] <10th Embodiment>

[0390] Reference is made to FIG. 20 wherein FIG. 19 A schematic diagram of an image capturing apparatus according to the 10th embodiment of the present application is shown in FIG. 10A. FIG. 21 to FIG. 22 The ball aberration, the distortion and the coma curves of the 10th embodiment are shown in FIG. 10B from left to right, respectively. It can be known that FIG. 21 The image capturing apparatus comprises an image capturing optical lens assembly (not labeled separately) and an electronic photosensitive element 1099. The image capturing optical lens assembly comprises, in order from the object side to the image side along the optical path, an aperture 1000, a first lens 1010, a second lens 1020, a third lens 1030, a stop 1001, a fourth lens 1040, a fifth lens 1050, a sixth lens 1060, a seventh lens 1070, an eighth lens 1080, a ninth lens 1090, a filter element 1093, and an imaging surface 1096. The image capturing optical lens assembly has a first lens group (the first lens 1010, the second lens 1020, and the third lens 1030), a second lens group (the fourth lens 1040, the fifth lens 1050, and the sixth lens 1060), and a third lens group (the seventh lens 1070, the eighth lens 1080, and the ninth lens 1090). The electronic photosensitive element 1099 is disposed on the imaging surface 1096. The image capturing optical lens assembly comprises nine lenses (1010, 1020, 1030, 1040, 1050, 1060, 1070, 1080, 1090) without any other lenses interposed between the lenses.

[0391] The first lens 1010 has positive refractive power and is made of plastic. The object side surface 1011 thereof is convex at the vicinity of the optical axis, and the image side surface 1022 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspheric surfaces. The object side surface 1011 thereof has one inflection point, and the image side surface 1022 thereof has one inflection point.

[0392] The second lens 1020 has negative refractive power and is made of plastic. The object side surface 1021 thereof is convex at the vicinity of the optical axis, and the image side surface 1022 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspheric surfaces.

[0393] The third lens 1030 has negative refractive power and is made of plastic. The object side surface 1031 thereof is convex at the vicinity of the optical axis, and the image side surface 1032 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspheric surfaces. The object side surface 1031 thereof has one inflection point, and the image side surface 1032 thereof has two inflection points.

[0394] The fourth lens 1040 has positive refractive power and is made of plastic material. The object-side surface 1041 is convex at the vicinity of the optical axis, and the image-side surface 1042 is concave at the vicinity of the optical axis. Both surfaces are aspherical. The object-side surface 1041 has two inflection points, and the image-side surface 1042 has three inflection points.

[0395] The fifth lens 1050 has positive refractive power and is made of plastic material. The object-side surface 1051 is convex at the vicinity of the optical axis, and the image-side surface 1052 is convex at the vicinity of the optical axis. Both surfaces are aspherical. The object-side surface 1051 has three inflection points, and the image-side surface 1052 has two inflection points.

[0396] The sixth lens 1060 has negative refractive power and is made of plastic material. The object-side surface 1061 is concave at the vicinity of the optical axis, and the image-side surface 1062 is convex at the vicinity of the optical axis. Both surfaces are aspherical. The object-side surface 1061 has one inflection point, and the image-side surface 1062 has two inflection points.

[0397] The seventh lens 1070 has negative refractive power and is made of plastic material. The object-side surface 1071 is convex at the vicinity of the optical axis, and the image-side surface 1072 is concave at the vicinity of the optical axis. Both surfaces are aspherical. The object-side surface 1071 has three inflection points, and the image-side surface 1072 has two inflection points. The object-side surface 1071 has at least one critical point at the off-axis position, and the image-side surface 1072 has at least one critical point at the off-axis position.

[0398] The eighth lens 1080 has positive refractive power and is made of plastic material. The object-side surface 1081 is convex at the vicinity of the optical axis, and the image-side surface 1082 is concave at the vicinity of the optical axis. Both surfaces are aspherical. The object-side surface 1081 has three inflection points, and the image-side surface 1082 has three inflection points. The object-side surface 1081 has at least one critical point at the off-axis position, and the image-side surface 1082 has at least one critical point at the off-axis position.

[0399] The ninth lens 1090 has negative refractive power and is made of plastic material. The object-side surface 1091 is concave at the vicinity of the optical axis, and the image-side surface 1092 is concave at the vicinity of the optical axis. Both surfaces are aspherical. The object-side surface 1091 has three inflection points, and the image-side surface 1092 has four inflection points. The object-side surface 1091 has at least one critical point at the off-axis position, and the image-side surface 1092 has at least one critical point at the off-axis position.

[0400] The filter element 1093 is made of glass and is disposed between the ninth lens 1090 and the imaging surface 1096, and does not affect the focal length of the imaging optical lens.

[0401] Please refer to Table XIX and Table XX below.

[0402]

[0403]

[0404]

[0405]

[0406] In the tenth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in the table below are the same as in the first embodiment and will not be repeated here.

[0407]

[0408]

[0409] <Eleventh Embodiment>

[0410] Please refer to FIG. 22 ,in FIG. 21 A schematic diagram of an image-capturing device according to the eleventh embodiment of the present invention is shown. FIG. 23 to FIG. 24 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the eleventh embodiment. FIG. 23 As can be seen, the image capturing device includes an image capturing optical lens group (unlabeled) and an electronic photosensitive element 1199. The image capturing optical lens group, arranged sequentially from the object side to the image side along the optical path, includes an aperture 1100, a first lens 1110, a second lens 1120, a third lens 1130, an aperture stop 1101, a fourth lens 1140, a fifth lens 1150, a sixth lens 1160, a seventh lens 1170, an eighth lens 1180, a ninth lens 1190, a filter element 1193, and an imaging plane 1196. The image capturing optical lens group is configured with a first lens group (first lens 1110, second lens 1120, and third lens 1130), a second lens group (fourth lens 1140, fifth lens 1150, and sixth lens 1160), and a third lens group (seventh lens 1170, eighth lens 1180, and ninth lens 1190). The electronic photosensitive element 1199 is disposed on the imaging surface 1196. The imaging optical lens group includes nine lenses (1110, 1120, 1130, 1140, 1150, 1160, 1170, 1180, 1190), and there are no other interposed lenses between each lens.

[0411] The first lens 1110 has positive refractive power and is made of glass. Its object-side surface 1111 is convex near the optical axis, and its image-side surface 1112 is concave near the optical axis. Both surfaces are aspherical. Its object-side surface 1111 has a point of inflection, and its image-side surface 1112 has a point of inflection.

[0412] The second lens 1120 has negative refractive power and is made of plastic material. The object-side surface 1121 thereof is convex at the vicinity of the optical axis, and the image-side surface 1122 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces.

[0413] The third lens 1130 has positive refractive power and is made of plastic material. The object-side surface 1131 thereof is convex at the vicinity of the optical axis, and the image-side surface 1132 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces. The object-side surface 1131 thereof has one inflection point, and the image-side surface 1132 thereof has two inflection points.

[0414] The fourth lens 1140 has negative refractive power and is made of plastic material. The object-side surface 1141 thereof is concave at the vicinity of the optical axis, and the image-side surface 1142 thereof is convex at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces. The object-side surface 1141 thereof has one inflection point, and the image-side surface 1142 thereof has one inflection point.

[0415] The fifth lens 1150 has positive refractive power and is made of plastic material. The object-side surface 1151 thereof is convex at the vicinity of the optical axis, and the image-side surface 1152 thereof is convex at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces, and the object-side surface 1151 thereof has three inflection points.

[0416] The sixth lens 1160 has negative refractive power and is made of plastic material. The object-side surface 1161 thereof is concave at the vicinity of the optical axis, and the image-side surface 1162 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces, and the image-side surface 1162 thereof has two inflection points.

[0417] The seventh lens 1170 has negative refractive power and is made of plastic material. The object-side surface 1171 thereof is convex at the vicinity of the optical axis, and the image-side surface 1172 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces. The object-side surface 1171 thereof has two inflection points, the image-side surface 1172 thereof has one inflection point. The object-side surface 1171 thereof has at least one critical point at the off-axis position, and the image-side surface 1172 thereof has at least one critical point at the off-axis position.

[0418] The eighth lens 1180 has positive refractive power and is made of plastic material. The object-side surface 1181 thereof is convex at the vicinity of the optical axis, and the image-side surface 1182 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces. The object-side surface 1181 thereof has two inflection points, the image-side surface 1182 thereof has two inflection points. The object-side surface 1181 thereof has at least one critical point at the off-axis position, and the image-side surface 1182 thereof has at least one critical point at the off-axis position.

[0419] The ninth lens 1190 has a negative refractive power and is made of plastic. Its object-side surface 1191 is concave near the optical axis, and its image-side surface 1192 is concave near the optical axis. Both surfaces are aspherical. The object-side surface 1191 has one inflection point, and the image-side surface 1192 has two inflection points. The image-side surface 1192 has at least one critical point away from the optical axis.

[0420] The filter element 1193 is made of glass and is disposed between the ninth lens 1190 and the imaging plane 1196 without affecting the focal length of the imaging optical lens.

[0421] Please refer to Table 21 and Table 22 below.

[0422]

[0423]

[0424]

[0425]

[0426] In the eleventh embodiment, the aspherical surface is represented by a curve equation in the form of the first embodiment. In addition, the definitions described in the following tables are the same as those of the first embodiment, and are not described here.

[0427]

[0428]

[0429] <Twelfth Embodiment>

[0430] Please refer to FIG. 24 wherein FIG. 23 A schematic diagram of an imaging device according to the twelfth embodiment of the present application is shown in FIG. 25 The left-to-right order is the spherical aberration, astigmatism, and distortion curves of the twelfth embodiment. The FIG. 26 to FIG. 28It is known that the image capturing device includes an image capturing optical lens assembly (not labeled separately) and an electronic photosensitive element 1299. The image capturing optical lens assembly includes, in order from the object side to the image side along the optical path, an aperture 1200, a first lens 1210, a second lens 1220, a third lens 1230, a diaphragm 1201, a fourth lens 1240, a fifth lens 1250, a sixth lens 1260, a seventh lens 1270, an eighth lens 1280, a ninth lens 1290, a filter element 1293, and an imaging surface 1296. Among them, the image capturing optical lens assembly has a configuration of a first lens group (the first lens 1210, the second lens 1220, and the third lens 1230), a second lens group (the fourth lens 1240, the fifth lens 1250, and the sixth lens 1260), and a third lens group (the seventh lens 1270, the eighth lens 1280, and the ninth lens 1290). Among them, the electronic photosensitive element 1299 is arranged on the imaging surface 1296. The image capturing optical lens assembly includes nine lenses (1210, 1220, 1230, 1240, 1250, 1260, 1270, 1280, 1290), and there is no other interpolated lens between each lens.

[0431] The first lens 1210 has positive refractive power and is made of plastic. Its object side surface 1211 is convex near the optical axis, and its image side surface 1212 is concave near the optical axis. Both surfaces are aspherical, and the image side surface 1212 has a point of inflection.

[0432] The second lens 1220 has negative refractive power and is made of plastic. Its object side surface 1221 is convex near the optical axis, and its image side surface 1222 is concave near the optical axis. Both surfaces are aspherical.

[0433] The third lens 1230 has negative refractive power and is made of plastic. Its object side surface 1231 is convex near the optical axis, and its image side surface 1232 is concave near the optical axis. Both surfaces are aspherical, its object side surface 1231 has a point of inflection, and its image side surface 1232 has two points of inflection.

[0434] The fourth lens 1240 has positive refractive power and is made of plastic. Its object side surface 1241 is convex near the optical axis, and its image side surface 1242 is concave near the optical axis. Both surfaces are aspherical, its object side surface 1241 has two points of inflection, and its image side surface 1242 has two points of inflection.

[0435] The fifth lens 1250 has positive refractive power and is made of plastic. Its object side surface 1251 is convex near the optical axis, and its image side surface 1252 is convex near the optical axis. Both surfaces are aspherical, its object side surface 1251 has three points of inflection, and its image side surface 1252 has two points of inflection.

[0436] The sixth lens 1260 has negative refractive power and is made of plastic material. The object-side surface 1261 thereof is concave at the vicinity of the optical axis, and the image-side surface 1262 thereof is convex at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces. The object-side surface 1261 thereof has one inflection point, and the image-side surface 1262 thereof has two inflection points.

[0437] The seventh lens 1270 has positive refractive power and is made of plastic material. The object-side surface 1271 thereof is convex at the vicinity of the optical axis, and the image-side surface 1272 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces. The object-side surface 1271 thereof has three inflection points, and the image-side surface 1272 thereof has two inflection points. The object-side surface 1271 thereof has at least one critical point at the off-axis region, and the image-side surface 1272 thereof has at least one critical point at the off-axis region.

[0438] The eighth lens 1280 has positive refractive power and is made of plastic material. The object-side surface 1281 thereof is convex at the vicinity of the optical axis, and the image-side surface 1282 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces. The object-side surface 1281 thereof has two inflection points, and the image-side surface 1282 thereof has two inflection points. The object-side surface 1281 thereof has at least one critical point at the off-axis region, and the image-side surface 1282 thereof has at least one critical point at the off-axis region.

[0439] The ninth lens 1290 has negative refractive power and is made of plastic material. The object-side surface 1291 thereof is concave at the vicinity of the optical axis, and the image-side surface 1292 thereof is concave at the vicinity of the optical axis. Both surfaces thereof are aspherical surfaces. The object-side surface 1291 thereof has two inflection points, and the image-side surface 1292 thereof has three inflection points. The object-side surface 1291 thereof has at least one critical point at the off-axis region, and the image-side surface 1292 thereof has at least one critical point at the off-axis region.

[0440] The filter element 1293 is made of glass and is disposed between the ninth lens 1290 and the imaging surface 1296, and does not affect the focal length of the imaging optical lens.

[0441] Please refer to Table XXIII and Table XXIV below.

[0442]

[0443]

[0444]

[0445]

[0446] In the twelfth embodiment, the aspherical surface is expressed in the form of the first embodiment. In addition, the definitions described in the following tables are the same as those of the first embodiment, and are not described herein.

[0447]

[0448]

[0449] <Thirteenth Embodiment>

[0450] Please refer to FIG. 26 is a schematic diagram illustrating a photographing device according to the thirteenth embodiment of the present application. In this embodiment, the photographing device 10 is a camera module. The photographing device 10 comprises an imaging lens 11, a driving device 12, an electronic photosensitive element 13, and an image stabilization module 14. The imaging lens 11 comprises an optical lens group, a lens barrel (not labeled) for carrying the optical lens group, and a holder member (not labeled), wherein the optical lens group can be the photographing optical lens group of the first embodiment described above, or the optical lens group can be the photographing optical lens group of other embodiments described above, and the present application is not limited in this regard. The photographing 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, and finally forms an image on the electronic photosensitive element 13 and can be output as image data, wherein the electronic photosensitive element 13 has, for example, more than 40 million pixels, so as to provide the user with better image detail.

[0451] The driving device 12 can have an auto-focus function, and the driving method can use driving systems such as a voice coil motor (VCM), a micro electro-mechanical system (MEMS), a piezoelectric system, and a shape memory alloy. The driving device 12 can allow the imaging lens 11 to achieve a better imaging position, and can provide a clear image of the subject under different object distances. In addition, the photographing device 10 is equipped with an electronic photosensitive element 13 (such as a CMOS or a CCD) with good sensitivity and low noise, which is arranged on the imaging surface of the photographing optical lens group, and can truly present the good imaging quality of the photographing optical lens group.

[0452] The image stabilization module 14 is, for example, an accelerometer, a gyroscope, or a Hall Effect Sensor. The driving device 12 can be combined with the image stabilization module 14 to serve as an optical image stabilization (OIS) device, which adjusts the changes in different axial directions of the imaging lens 11 to compensate for the blurred image caused by shaking at the moment of shooting, or uses image compensation technology in image software to provide electronic image stabilization (EIS) function, thereby further improving the imaging quality in dynamic and low-illumination scenes.

[0453] <Fourteenth Embodiment>

[0454] Please refer to FIG. 27 , wherein FIG. 26 a perspective view illustrating one side of an electronic device according to a fourteenth embodiment of the present application is shown, FIG. 28 a perspective view illustrating the other side of the electronic device of FIG. 26 , and FIG. 29 a system block diagram of the electronic device of FIG. 32 to FIG. 36 .

[0455] In this embodiment, the electronic device 20 is a smart phone. The electronic device 20 includes the image capturing device 10, the image capturing device 10a, the image capturing device 10b, the image capturing device 10c, the image capturing device 10d, a flash module 21, a focus assisting module 22, an image signal processor 23, a user interface 24, and an image software processor 25 of the thirteenth embodiment. The image capturing device 10 and the image capturing device 10a are both arranged on the same side of the electronic device 20 and are both single-focus. The image capturing device 10b, the image capturing device 10c, the image capturing device 10d, and the user interface 24 are all arranged on the other side of the electronic device 20, and the user interface 24 is a display device, so that the image capturing device 10b, the image capturing device 10c, and the image capturing device 10d can serve as front lenses to provide a selfie function, but the present application is not limited thereto. Moreover, the image capturing device 10a, the image capturing device 10b, the image capturing device 10c, and the image capturing device 10d all have similar structural arrangements as the image capturing device 10. In detail, the image capturing device 10a, the image capturing device 10b, the image capturing device 10c, and the image capturing device 10d each include an imaging lens, a driving device, an electronic photosensitive element, and an image stabilization module. Among them, the imaging lens of the image capturing device 10a, the image capturing device 10b, the image capturing device 10c, and the image capturing device 10d each includes an optical lens group, a lens barrel for carrying the optical lens group, and a support device.

[0456] The image capturing device 10 is a wide-angle image capturing device, the image capturing device 10a is an ultra-wide-angle image capturing device, the image capturing device 10b is a wide-angle image capturing device, the image capturing device 10c is an ultra-wide-angle image capturing device, and the image capturing device 10d is a Time of Flight (ToF) image capturing device. The image capturing device 10 and the image capturing device 10a of the present embodiment have different angles of view. The maximum angle of view of the image capturing device 10 and the maximum angle of view of the image capturing device 10a can differ by at least 20 degrees. In this way, the electronic device 20 can obtain images of different ranges and levels of detail to satisfy various shooting scenarios. In addition, the image capturing device 10d can obtain depth information of an image. The electronic device 20 described above is an example that includes multiple image capturing devices 10, 10a, 10b, 10c, 10d, but the number and arrangement of image capturing devices are not intended to limit the present application.

[0457] When a user captures the subject 26, the electronic device 20 uses the image capturing device 10 or the image capturing device 10a to perform a spotlight capture, activates the flash module 21 to provide supplementary light, uses the subject distance information of the subject 26 provided by the focus assist module 22 to perform a fast focus, and uses the image signal processor 23 to perform an image optimization process to further improve the image quality generated by the image capturing optical lens group. The focus assist module 22 can use an infrared or laser focus assist system to achieve fast focusing. In addition, the electronic device 20 can also use the image capturing device 10b, the image capturing device 10c, or the image capturing device 10d to perform a capture. The user interface 24 can use a touch screen or a physical capture button, and the image software processor 25 can perform image capture and image processing with various functions. The image processed by the image software processor 25 can be displayed on the user interface 24.

[0458] <15th Embodiment>

[0459] Please refer to FIG. 32 to FIG. 36 is a perspective view illustrating one side of an electronic device according to a 15th embodiment of the present application.

[0460] In the present embodiment, the electronic device 30 is a smart phone. The electronic device 30 includes the image capturing device 10, the image capturing device 10e, the image capturing device 10f, the flash module 31, the focus assist module, the image signal processor, the display device, and the image software processor (not shown) of the 13th embodiment. The image capturing device 10, the image capturing device 10e, and the image capturing device 10f are arranged on the same side of the electronic device 30, and the display device is arranged on the other side of the electronic device 30. In addition, the image capturing device 10e and the image capturing device 10f have similar structural arrangements as the image capturing device 10, and will not be described again.

[0461] The image capturing device 10 is a wide-angle image capturing device, the image capturing device 10e is a telephoto image capturing device, and the image capturing device 10f is an ultra-wide-angle image capturing device. The image capturing device 10, the image capturing device 10e, and the image capturing device 10f of the present embodiment have different angles of view. The half of the maximum angle of view of the image capturing device 10 can be greater than 35 degrees, and the half of the maximum angle of view of the image capturing device 10e can be less than 25 degrees. That is, the maximum angle of view of the image capturing device 10 and the maximum angle of view of the image capturing device 10e can differ by at least 20 degrees; in addition, the maximum angle of view of the image capturing device 10 and the maximum angle of view of the image capturing device 10f can also differ by at least 20 degrees. In this way, the image capturing device 10e or the image capturing device 10f can effectively control the size of the angle of view, so as to have a better imaging range, so as to achieve a wider application; thus, the electronic device 30 can provide different magnification ratios, so as to achieve the optical zoom shooting effect. The half of the maximum angle of view of the image capturing device 10e can also be less than 18 degrees; in this way, the electronic device 30 has different functional photography modules, so as to provide consumers with multiple shooting applications. In addition, the image capturing device 10e can be a telephoto image capturing device with a reflective element configuration; in this way, the optical axis direction can be adjusted, so that the total length of the image capturing device 10e is not limited by the thickness of the electronic device 30. The reflective element configuration of the image capturing device 10e can be, for example, similar to the structure of FIG. 34 to FIG. 36 , and reference can be made to the foregoing description of the corresponding FIG. 30 , which will not be repeated here. It is worth noting that when the reflective element configuration of the image capturing device 10e is, for example, similar to the structure of FIG. 32 to FIG. 36 , the number of reflective elements is multiple; in this way, the optical axis direction can be adjusted, so that the space of the image capturing device 10e can be more efficiently applied. The foregoing electronic device 30 is taken as an example of including multiple image capturing devices 10, 10e, 10f, but the number and configuration of the image capturing devices are not intended to limit the present application. When the user shoots the object, the electronic device 30 uses the image capturing device 10, the image capturing device 10e, or the image capturing device 10f to capture the image, starts the flash module 31 to provide light, and performs subsequent processing in a manner similar to the foregoing embodiments, which will not be repeated here.

[0462] <Sixteenth Embodiment>

[0463] Please refer to FIG. 32 to FIG. 36 , which illustrates a side view of an electronic device according to a sixteenth embodiment of the present application.

[0464] In this embodiment, the electronic device 40 is a smart phone. The electronic device 40 includes the image capturing device 10, the image capturing device 10g, the image capturing device 10h, the image capturing device 10i, the image capturing device 10j, the image capturing device 10k, the image capturing device 10m, the image capturing device 10n, the image capturing device 10p, a flash module 41, a focus assist module, an image signal processor, a display device, and an image software processor (not shown) of the thirteenth embodiment. The image capturing device 10, the image capturing device 10g, the image capturing device 10h, the image capturing device 10i, the image capturing device 10j, the image capturing device 10k, the image capturing device 10m, the image capturing device 10n, and the image capturing device 10p are all arranged on the same side of the electronic device 40, while the display device is arranged on the other side of the electronic device 40. Moreover, the image capturing device 10g, the image capturing device 10h, the image capturing device 10i, the image capturing device 10j, the image capturing device 10k, the image capturing device 10m, the image capturing device 10n, and the image capturing device 10p all have similar structural configurations as the image capturing device 10, which will not be described again here.

[0465] The image capturing device 10 is a wide-angle image capturing device, the image capturing device 10g is a telephoto image capturing device, the image capturing device 10h is a telephoto image capturing device, the image capturing device 10i is a wide-angle image capturing device, the image capturing device 10j is an ultra-wide-angle image capturing device, the image capturing device 10k is an ultra-wide-angle image capturing device, the image capturing device 10m is a telephoto image capturing device, the image capturing device 10n is a telephoto image capturing device, and the image capturing device 10p is a time-of-flight range finding image capturing device. The image capturing device 10, the image capturing device 10g, the image capturing device 10h, the image capturing device 10m, and the image capturing device 10n of this embodiment have different angles of view. Among them, half of the maximum angle of view of the image capturing device 10 can be greater than 35 degrees, and half of the maximum angle of view of the image capturing device 10g, the image capturing device 10h, the image capturing device 10m, or the image capturing device 10n can be less than 25 degrees. That is, the maximum angle of view of the image capturing device 10 and the maximum angle of view of the image capturing device 10g, the image capturing device 10h, the image capturing device 10m, or the image capturing device 10n can differ by at least 20 degrees. In this way, the electronic device 40 can provide different magnifications to achieve the shooting effect of optical zoom. Among them, half of the maximum angle of view of the image capturing device 10g or the image capturing device 10h can also be less than 18 degrees. In addition, the image capturing device 10g and the image capturing device 10h can be telephoto image capturing devices with reflective element configurations. Among them, the reflective element configurations of the image capturing device 10g and the image capturing device 10h may, for example, have a structure similar to ​ ​ ​The details of the above-mentioned embodiments are not repeated here. In addition, the image capturing device 10p can obtain depth information of the image. The electronic device 40 is exemplified by including a plurality of image capturing devices 10, 10g, 10h, 10i, 10j, 10k, 10m, 10n, and 10p, but the number and arrangement of the image capturing devices are not intended to limit the present application. When the user captures the object, the electronic device 40 uses the image capturing device 10, the image capturing device 10g, the image capturing device 10h, the image capturing device 10i, the image capturing device 10j, the image capturing device 10k, the image capturing device 10m, the image capturing device 10n, or the image capturing device 10p to focus on the image capturing, activates the flash module 41 to provide light compensation, and performs subsequent processing in a manner similar to the above-mentioned embodiments, which are not repeated here.

[0466] The image capturing device 10 of the present application is not limited to being applied to a smart phone. The image capturing device 10 can also be applied to a mobile focusing system and has the features of good aberration correction and good imaging quality. For example, the image capturing device 10 can be applied to various electronic devices such as three-dimensional (3D) image capturing, digital cameras, mobile devices, tablet computers, smart televisions, network monitoring equipment, driving recorders, reversing imaging devices, multi-lens devices, recognition systems, motion game consoles, and wearable devices. The above-mentioned electronic devices are only exemplary to illustrate the practical application examples of the present application and are not intended to limit the application range of the image capturing device of the present application.

[0467] Although the present application has been disclosed with the above-mentioned embodiments, it is not intended to limit the present application, and any person skilled in the art can make various modifications and decorations without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application is defined by the scope of the appended claims.

Claims

1. An optical lens assembly for image acquisition, characterized in that, It comprises nine lenses, which are arranged sequentially from the object side to the image side along the optical path as a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. Each of the nine lenses has an object-side surface facing the object side and an image-side surface facing the image side, and the total number of lenses in the image-taking optical lens group is nine. Wherein, the first lens has positive refractive power, the second lens has negative refractive power, the fifth lens has positive refractive power, the sixth lens has negative refractive power, the eighth lens has positive refractive power, the ninth lens has negative refractive power, the image-side surface of the ninth lens is concave near the optical axis, and the image-side surface of the ninth lens has at least one inflection point; Wherein, the radius of curvature of the object-side surface of the ninth lens is R17, the radius of curvature of the image-side surface of the ninth lens is R18, 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 imaging optical lens group is ImgH, the focal length of the imaging optical lens group is f, and the entrance pupil diameter of the imaging optical lens group is EPD, which satisfies the following conditions: -0.70 < (R17+R18) / (R17-R18) < 1.50; 0.50 < TL / ImgH < 1.55; and 0.80 < f / EPD ≤ 1.

89.

2. The optical lens assembly for image acquisition according to claim 1, characterized in that, The image-side surface of the third lens is concave near the optical axis, and the image-side surface of the seventh lens is also concave near the optical axis.

3. The image-capturing optical lens assembly according to claim 1, characterized in that, 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 ninth lens is V9, 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, the refractive index of the ninth lens is N9, and the refractive index of the i-th lens is Ni. The minimum value of Vi / Ni is (Vi / Ni)min, which satisfies the following condition: 7.0 < (Vi / Ni)min < 11.80, where i = 1, 2, 3, 4, 5, 6, 7, 8 or 9.

4. The optical lens assembly for image acquisition according to claim 1, characterized in that, The Abbe number of the sixth lens is V6, and the Abbe number of the seventh lens is V7, satisfying the following conditions: 10.0 < V6 < 40.0; and 10.0 < V7 < 40.0。 5. The optical lens assembly for image acquisition according to claim 1, characterized in that, The radius of curvature of the object-side surface of the ninth lens is R17, and the radius of curvature of the image-side surface of the ninth lens is R18, which satisfies the following conditions: 0.15 ≤ (R17+R18) / (R17-R18) < 0.

43.

6. The optical lens assembly for image acquisition according to claim 1, characterized in that, The radius of curvature of the object-side surface of the ninth lens is R17, and the radius of curvature of the image-side surface of the ninth lens is R18, which satisfies the following conditions: 0.15 ≤ (R17+R18) / (R17-R18) ≤ 0.

31.

7. The optical lens assembly for image acquisition according to claim 1, characterized in that, The maximum imaging height of the optical lens group used for image acquisition is ImgH, and the distance from the image-side surface of the ninth lens to the imaging surface on the optical axis is BL, which satisfies the following conditions: 5.80 mm < ImgH < 10.0 mm; and 5.0 < ImgH / BL < 20.

0.

8. The optical lens assembly for image acquisition according to claim 1, characterized in that, The maximum effective radius of the object-side surface of the third lens is Y31, and the maximum effective radius of the image-side surface of the ninth lens is Y92, which satisfy the following conditions: 2.80 < Y92 / Y31 < 4.

50.

9. The optical lens assembly for image acquisition according to claim 1, characterized in that, 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 entrance pupil diameter of the imaging optical lens group is EPD, and the distance from the image-side surface of the ninth lens to the imaging plane on the optical axis is BL, which satisfies the following conditions: 0.10 < (V2+V3) / V1 < 0.90; as well as 3.2 < EPD / BL < 18.

0.

10. The optical lens assembly for image acquisition according to claim 1, characterized in that, The vertical distance between the critical point of the image-side surface of the seventh lens and the optical axis is Yc72, the vertical distance between the critical point of the image-side surface of the eighth lens and the optical axis is Yc82, the vertical distance between the critical point of the image-side surface of the ninth lens and the optical axis is Yc92, and the focal length of the image-capturing optical lens group is f, which satisfies the following conditions: 0.02 < Yc72 / f < 0.80; 0.02 < Yc82 / f < 0.80; and 0.02 < Yc92 / f < 0.

80.

11. The optical lens assembly for image acquisition according to claim 1, characterized in that, The image-taking optical lens group contains at least four lenses, each with an Abbe number less than 40.

0. Wherein, the focal length of the image-capturing optical lens group is f, the focal length of the first lens is f1, the distance from the image-side surface of the ninth lens to the imaging plane on the optical axis is BL, and the distance from the object-side surface of the first lens to the image-side surface of the ninth lens on the optical axis is TD, which satisfies the following conditions: 0.40 < f / f1 < 3.80; and 0 < BL / TD < 0.

25.

12. The optical lens assembly for image acquisition according to claim 1, characterized in that, The maximum refractive index of all lenses in the image-capturing optical lens group is Nmax, which satisfies the following condition: 1.686 ≤ Nmax < 1.

78.

13. The optical lens assembly for image acquisition according to 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, the maximum imaging height of the imaging optical lens group is ImgH, the focal length of the imaging optical lens group is f, and the entrance pupil diameter of the imaging optical lens group is EPD, which satisfies the following conditions: 1.26 ≤ TL / ImgH < 1.55; and 1.20 < f / EPD ≤ 1.

89.

14. An optical lens assembly for image acquisition, characterized in that, It comprises nine lenses, which are arranged sequentially from the object side to the image side along the optical path as a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. Each of the nine lenses has an object-side surface facing the object side and an image-side surface facing the image side, and the total number of lenses in the image-taking optical lens group is nine. Wherein, the first lens has positive refractive power, the second lens has negative refractive power, the fifth lens has positive refractive power, the sixth lens has negative refractive power, the eighth lens has positive refractive power, the ninth lens has negative refractive power, the image-side surface of the ninth lens is concave near the optical axis, and the image-side surface of the ninth lens has at least one inflection point; Wherein, the radius of curvature of the object-side surface of the ninth lens is R17, the radius of curvature of the image-side surface of the ninth lens is R18, the distance on the optical axis from the object-side surface of the first lens to an imaging plane is TL, the maximum imaging height of the imaging optical lens group is ImgH, the focal length of the imaging optical lens group is f, the entrance pupil diameter of the imaging optical lens group is EPD, the maximum thickness on the optical axis of all lenses in the imaging optical lens group is CTmax, and the minimum thickness on the optical axis of all lenses in the imaging optical lens group is CTmin, which satisfies the following conditions: -0.90 < (R17+R18) / (R17-R18) < 2.50; 0.50 < TL / ImgH < 1.55; 0.80 < f / EPD ≤ 1.89; and 1.0 < CTmax / CTmin < 5.

0.

15. The image-capturing optical lens assembly according to claim 14, characterized in that, The seventh lens has negative refractive power, and the image-side surface of the seventh lens is concave near the optical axis.

16. The image-capturing optical lens assembly according to claim 14, characterized in that, 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 ninth lens is V9, 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, the refractive index of the ninth lens is N9, and the refractive index of the i-th lens is Ni. The minimum value of Vi / Ni is (Vi / Ni)min, which satisfies the following condition: 9.0 < (Vi / Ni)min < 11.50, where i = 1, 2, 3, 4, 5, 6, 7, 8 or 9.

17. The optical lens assembly for image acquisition according to claim 14, characterized in that, The Abbe number of the sixth lens is V6, and the Abbe number of the seventh lens is V7, satisfying the following conditions: 30.0 < V6 < 40.0; and 30.0 < V7 < 40.0。 18. The optical lens assembly for image acquisition according to claim 14, characterized in that, The radius of curvature of the object-side surface of the ninth lens is R17, and the radius of curvature of the image-side surface of the ninth lens is R18, which satisfies the following conditions: -0.50 < (R17+R18) / (R17-R18) < 1.

50.

19. The optical lens assembly for image acquisition according to claim 14, characterized in that, The radius of curvature of the object-side surface of the ninth lens is R17, and the radius of curvature of the image-side surface of the ninth lens is R18, which satisfies the following conditions: -0.70 < (R17+R18) / (R17-R18) < 0.

55.

20. The image-capturing optical lens assembly according to claim 14, characterized in that, The focal length of the imaging optical lens group is f, the entrance pupil diameter of the imaging optical lens group is EPD, the maximum thickness along the optical axis of all lenses in the imaging optical lens group is CTmax, and the minimum thickness along the optical axis of all lenses in the imaging optical lens group is CTmin, which satisfies the following conditions: 1.79 ≤ f / EPD ≤ 1.89; and 2.50 < CTmax / CTmin < 5.

0.

21. The image-capturing optical lens assembly according to claim 14, characterized in that, The image-side surface of the seventh lens is concave near the optical axis. The Abbe number of the first lens is V1, the Abbe number of the second lens is V2, and the Abbe number of the third lens is V3, satisfying the following conditions: 0.66 ≤ (V2+V3) / V1 < 0.

90.

22. The image-capturing optical lens assembly according to claim 14, characterized in that, The maximum thickness along the optical axis of all lenses in the imaging optical lens group is CTmax, and the minimum thickness along the optical axis of all lenses in the imaging optical lens group is CTmin, which satisfy the following conditions: 3.24 ≤ CTmax / CTmin ≤ 3.

90.

23. The image-capturing optical lens assembly according to claim 14, characterized in that, The image-taking optical lens group contains at least four lenses, each with an Abbe number less than 40.

0. Wherein, the focal length of the image-capturing optical lens group is f, the focal length of the first lens is f1, the distance from the image-side surface of the ninth lens to the imaging plane on the optical axis is BL, and the distance from the object-side surface of the first lens to the image-side surface of the ninth lens on the optical axis is TD, which satisfies the following conditions: 0.40 < f / f1 < 3.80; and 0 < BL / TD < 0.

25.

24. The image-capturing optical lens assembly according to claim 14, characterized in that, The maximum refractive index of all lenses in the image-capturing optical lens group is Nmax, which satisfies the following condition: 1.686 ≤ Nmax < 1.

78.

25. The image-capturing optical lens assembly according to claim 14, characterized in that, The distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, the maximum imaging height of the imaging optical lens group is ImgH, the focal length of the imaging optical lens group is f, and the entrance pupil diameter of the imaging optical lens group is EPD, which satisfies the following conditions: 0.90 < TL / ImgH < 1.35; and 0.80 < f / EPD ≤ 1.86.

Images