Image pickup optical lens

Abstract

The present application provides an image capturing optical lens, wherein the total number of lenses in the image capturing optical lens is seven, and the seven lenses are sequentially arranged from the object side to the image side as follows: a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens. The second lens has positive refractive power, and at least one surface of at least one of the seven lenses comprises at least one inflection point. When certain conditions are met, the image capturing optical lens can have high imaging quality, a large aperture, and telephoto capability at the same time.

Description

[0001] The present application is a redivisional application of a divisional application, the original application date of which is April 26, 2018, the original application number of which is 201810382833.7 (the divisional application number of which is 202111251643.X), and the original application name of which is “Image-capturing optical lens, image-capturing device, and electronic device”. TECHNICAL FIELD

[0002] The present application relates to an image-capturing optical lens, in particular to an image-capturing optical lens applicable to an electronic device. BACKGROUND

[0003] With the advancement of semiconductor process technology, the performance of electronic photosensitive elements has been improved, and the pixel size can be made 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 demands of imaging quality, sensitivity, aperture size, volume, and viewing angle, the present application provides an optical lens to meet the requirements. SUMMARY

[0005] The present application provides an image-capturing optical lens, which includes seven lenses, in order from the object side to the image side: a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens.

[0006] In the image-capturing optical lens, the total number of lenses is seven, each of the first to seventh lenses includes an object side surface facing the object side direction and an image side surface facing the image side direction, the second lens has positive refractive power, at least one surface of the seven lenses includes at least one inflection point, the distance between the object side surface of the first lens and an image plane on the optical axis is TL, the focal length of the image-capturing optical lens is f, the maximum image height of the image-capturing optical lens is ImgH, the minimum value of the Abbe number of the seven lenses is Vmin, and the maximum value of the refractive index of the seven lenses is Nmax, satisfying the following relationships:

[0007] 0.30 < TL / f < 1.25;

[0008] 0.10 < ImgH / f < 0.47;

[0009] 10.0 < Vmin ≤ 19.5; and

[0010] 1.58 < Nmax < 1.72.

[0011] The present application also provides an image capturing optical lens, which comprises seven lenses in sequence from the object side to the image side: a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens.

[0012] In the image capturing optical lens, the total number of lenses is seven, each of the first to seventh lenses comprises an object side surface facing the object side direction and an image side surface facing the image side direction, the second lens has positive refractive power, at least one lens surface of the seven lenses comprises at least one inflection point, the distance between the object side surface of the first lens and an image plane on the optical axis is TL, the focal length of the image capturing optical lens is f, the maximum image height of the image capturing optical lens is ImgH, and the minimum value of the Abbe number of the seven lenses is Vmin, which satisfy the following relationships:

[0013] 0.30 < TL / f < 1.25;

[0014] 0.10 < ImgH / f < 0.47; and

[0015] 10.0 < Vmin ≤ 19.5.

[0016] The present application also provides an image capturing optical lens, which comprises seven lenses in sequence from the object side to the image side: a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens.

[0017] In the image capturing optical lens, the total number of lenses is seven, each of the first to seventh lenses comprises an object side surface facing the object side direction and an image side surface facing the image side direction, the second lens has positive refractive power, the image side surface of the seventh lens is concave near the optical axis, at least one lens surface of the seven lenses comprises at least one inflection point, the distance between the object side surface of the first lens and an image plane on the optical axis is TL, the focal length of the image capturing optical lens is f, the maximum image height of the image capturing optical lens is ImgH, and the minimum value of the Abbe number of the seven lenses is Vmin, which satisfy the following relationships:

[0018] 0.30 < TL / f < 1.25;

[0019] 0.10 < ImgH / f < 0.47; and

[0020] 10.0 < Vmin ≤ 19.5.

[0021] When 0.30 < TL / f < 1.25, the total length of the lens can be suppressed while pursuing the local image height resolution.

[0022] When ImgH / f meets the above conditions, it helps to control the shooting range and the field angle, so as to improve the resolution of the local image and further achieve a better long-distance shooting effect.

[0023] When Vmin meets the above conditions, it helps to balance the converging ability of light of different bands of the lens, so as to correct chromatic aberration.

[0024] When 1.58 < Nmax < 1.72, it ensures that the lens has sufficient optical path control ability and at the same time meets the diversity of the lens surface shape, so as to correct various off-axis aberrations. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1A It is a schematic diagram of the image pickup device according to the first embodiment of the present invention.

[0026] Figure 1B It is an aberration curve diagram according to the first embodiment of the present invention.

[0027] Figure 2A It is a schematic diagram of the image pickup device according to the second embodiment of the present invention.

[0028] Figure 2B It is an aberration curve diagram according to the second embodiment of the present invention.

[0029] Figure 3A It is a schematic diagram of the image pickup device according to the third embodiment of the present invention.

[0030] Figure 3B It is an aberration curve diagram according to the third embodiment of the present invention.

[0031] Figure 4A It is a schematic diagram of the image pickup device according to the fourth embodiment of the present invention.

[0032] Figure 4B It is an aberration curve diagram according to the fourth embodiment of the present invention.

[0033] Figure 5A It is a schematic diagram of the image pickup device according to the fifth embodiment of the present invention.

[0034] Figure 5B It is an aberration curve diagram according to the fifth embodiment of the present invention.

[0035] Figure 6A It is a schematic diagram of the image pickup device according to the sixth embodiment of the present invention. ​​​​​​​​​​This is an aberration curve diagram of the seventh embodiment of the present invention.

[0039] Figure 8A This is a schematic diagram of the imaging device according to the eighth embodiment of the present invention.

[0040] Figure 8B This is an aberration curve diagram of the eighth embodiment of the present invention.

[0041] Figure 9A This is a schematic diagram of the imaging device according to the ninth embodiment of the present invention.

[0042] Figure 9B This is an aberration curve diagram of the ninth embodiment of the present invention.

[0043] Figure 10A This is a schematic diagram of the imaging device according to the tenth embodiment of the present invention.

[0044] Figure 10B This is an aberration curve diagram of the tenth embodiment of the present invention.

[0045] Figure 11 The diagram shows the parameters Yp61a, Yp62a, Yp62b, Yp71a and the inflection points IP61a, IP62a, IP62b, IP71a, using the first embodiment of the present invention as an example.

[0046] Figure 12 This is a three-dimensional schematic diagram of an imaging device according to the eleventh embodiment of the present invention.

[0047] Figure 13A This is a three-dimensional schematic diagram of an electronic device according to the twelfth embodiment of the present invention.

[0048] Figure 13B This is a system diagram of an electronic device according to the twelfth embodiment of the present invention.

[0049] Figure 14A This is a rear view of an electronic device according to the thirteenth embodiment of the present invention.

[0050] Figure 14B This is a front view of an electronic device according to the thirteenth embodiment of the present invention.

[0051] Explanation of symbols in the attached drawings:

[0052] Apertures 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000; Apertures 601, 701, 801, 901, 1001;

[0053] First lenses 110, 210, 310, 410, 510, 610, 710, 810, 910, 1010; Side view of the object: 111, 211, 311, 411, 511, 611, 711, 811, 911, 1011; Like the side view numbers 112, 212, 312, 412, 512, 612, 712, 812, 912, 1012; Second lenses: 120, 220, 320, 420, 520, 620, 720, 820, 920, 1020; Side view of the object: 121, 221, 321, 421, 521, 621, 721, 821, 921, 1021; Like the side profiles: 122, 222, 322, 422, 522, 622, 722, 822, 922, 1022; Third lenses: 130, 230, 330, 430, 530, 630, 730, 830, 930, 1030; Side view of the object: 131, 231, 331, 431, 531, 631, 731, 831, 931, 1031; Like the side profiles: 132, 232, 332, 432, 532, 632, 732, 832, 932, 1032; The fourth lens is 140, 240, 340, 440, 540, 640, 740, 840, 940, 1040; Side view of the object: 141, 241, 341, 441, 541, 641, 741, 841, 941, 1041; Like the side profiles: 142, 242, 342, 442, 542, 642, 742, 842, 942, 1042; The fifth lens has angles of 150, 250, 350, 450, 550, 650, 750, 850, 950, and 1050. Side profile of the object: 151, 251, 351, 451, 551, 651, 751, 851, 951, 1051; Like the side profiles: 152, 252, 352, 452, 552, 652, 752, 852, 952, 1052; The sixth lens has angles of 160, 260, 360, 460, 560, 660, 760, 860, 960, and 1060. Side view of the object: 161, 261, 361, 461, 561, 661, 761, 861, 961, 1061; Like the side profile: 162, 262, 362, 462, 562, 662, 762, 862, 962, 1062; The seventh lens is 170, 270, 370, 470, 570, 670, 770, 870, 970, 1070; Side view of the object: 171, 271, 371, 471, 571, 671, 771, 871, 971, 1071; Like the side profile: 172, 272, 372, 472, 572, 672, 772, 872, 972, 1072;

[0054] Filter elements: 180, 280, 380, 480, 580, 680, 780, 880, 980, 1080;

[0055] Imaging planes: 190°, 290°, 390°, 490°, 590°, 690°, 790°, 890°, 990°, 1090°;

[0056] Electronic photosensitive elements 195, 295, 395, 495, 595, 695, 795, 895, 995, 1095, 13a, 13b, 13c;

[0057] Inflection points IP61a, IP62a, IP62b, IP71;

[0058] Image capturing devices 10a, 10b, 10c, 1301, 1302, 1303, 1304;

[0059] Imaging lenses 11a, 11b, 11c;

[0060] Drive units 12a, 12b, 12c;

[0061] Image stabilization modules 14a, 14b, and 14c;

[0062] 30 subjects;

[0063] Electronic devices 20, 1300;

[0064] Flash module 21;

[0065] Focusing assist module 22;

[0066] Image signal processor 23;

[0067] User interface 24;

[0068] Image software processor 25;

[0069] Display device 1305;

[0070] The focal length f of the imaging optical lens;

[0071] The aperture value Fno of the imaging optical lens;

[0072] The image captures half of the maximum field of view (HFOV) of the optical lens.

[0073] The maximum image height of the imaging optical lens is ImgH;

[0074] The entrance pupil diameter (EPD) of the imaging optical lens;

[0075] The Abbe number V4 of the fourth lens;

[0076] The Abbe number V5 of the fifth lens;

[0077] The Abbe number of the sixth lens is V6;

[0078] The minimum Abbe number among the seven lenses, Vmin;

[0079] The maximum refractive index Nmax among the seven lenses;

[0080] The Abbe number V of each of the seven lenses;

[0081] The thickness of the second lens on the optical axis is CT2;

[0082] The thickness of the seventh lens on the optical axis is CT7;

[0083] The maximum thickness of each of the seven lenses along the optical axis, CTmax.

[0084] The minimum thickness CTmin of each of the seven lenses along the optical axis;

[0085] The distance T12 between the first lens and the second lens on the optical axis;

[0086] The distance T23 between the second lens and the third lens on the optical axis;

[0087] The distance T34 between the third lens and the fourth lens on the optical axis;

[0088] The distance T45 on the optical axis between the fourth and fifth lenses;

[0089] The distance T56 between the fifth and sixth lenses on the optical axis;

[0090] The radius of curvature of the second lens object side surface is R3;

[0091] The radius of curvature of the side surface of the second lens is R4;

[0092] The focal length f1 of the first lens;

[0093] The focal length of the second lens is f2;

[0094] The focal length of the third lens is f3;

[0095] The focal length of the fourth lens is f4;

[0096] The focal length of the fifth lens is f5;

[0097] The focal length of the sixth lens is f6;

[0098] The focal length of the seventh lens is f7;

[0099] The combined focal length f12 of the first and second lenses;

[0100] The combined focal length of the third, fourth, and fifth lenses is f345; The minimum value of |f / fi|min among |f / f1|, |f / f2|, |f / f3|, |f / f4|, |f / f5|, |f / f6| and |f / f7|;

[0101] The distance TL on the optical axis between the object side surface of the first lens and the imaging surface;

[0102] The distance BL on the optical axis between the image-side surface of the seventh lens and the imaging plane;

[0103] The distance TD on the optical axis between the object side of the first lens and the image side of the seventh lens;

[0104] The distance SD on the optical axis between the aperture and the side of the image of the seventh lens;

[0105] The maximum effective radius of the object side surface of the first lens is Y11;

[0106] The maximum value of Ymax among the maximum effective radii of the object side and image side of the seven lenses; The distance from the center of the side of the seventh lens to the maximum effective radius parallel to the optical axis is SAG72; The Abbe number Vp of at least one positive refractive power lens among the seven lenses;

[0107] The perpendicular distances between the inflection point on the side of the sixth lens and the optical axis are Yp61 and Yp61a.

[0108] The perpendicular distances between the inflection point on the side of the sixth lens and the optical axis are Yp62, Yp62a, and Yp62b.

[0109] The perpendicular distances between the inflection point on the side of the seventh lens and the optical axis are Yp71 and Yp71a.

[0110] The perpendicular distance Yp72 between the inflection point on the side of the seventh lens and the optical axis. Detailed Implementation

[0111] The present invention provides an imaging optical lens, which includes seven lenses. The seven lenses are, in order from the object side to the image side: the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens. Each of the first lens to the seventh lens includes an object side surface facing the object side direction and an image side surface facing the image side direction.

[0112] The object side surface of the first lens may be convex near the optical axis, and the image side surface of the first lens may be concave near the optical axis, which can balance the optical path directions in the tangential direction and the sagittal direction, so as to facilitate the correction of lens astigmatism.

[0113] The second lens may have a positive refractive power, which can provide the main converging ability of the lens, so as to effectively compress the lens space and meet the requirements of miniaturization. The object side surface of the second lens may be convex near the optical axis, which can strengthen the ability of the lens to receive light at the object side end, so as to facilitate the light collection requirements of a large aperture lens.

[0114] The third lens may have a negative refractive power and balance with the second lens to reduce the spherical aberration of the lens, and at the same time adjust the focusing positions of light rays in different wavelength bands to avoid image overlap.

[0115] The sixth lens may have a positive refractive power, which can balance the refractive power distribution at the image side end of the lens, control the incident angle of light rays entering the imaging surface, and thus improve the image brightness.

[0116] The seventh lens may have a negative refractive power, which is beneficial to reducing the back focal length of the lens to meet the characteristics of miniaturization. The image side surface of the seventh lens may be concave near the optical axis and may have at least one convex surface at the off-axis position, which is beneficial to reducing the back focal length of the lens to meet the characteristics of miniaturization, and can correct field curvature and distortion.

[0117] At least one surface of at least one of the seven lenses includes at least one inflection point, which is beneficial to correcting the peripheral aberration of the lens, and at the same time compressing the total length of the lens, and can achieve a good balance between the imaging quality and the lens volume. Preferably, at least one surface of at least one of the sixth lens and the seventh lens may include an inflection point, which can strengthen the correction of off-axis aberration and make the Petzval surface of the lens flatter.

[0118] The distance between the object side surface of the first lens and the imaging surface on the optical axis is TL, the aperture value of the imaging optical lens is Fno, and the focal length of the imaging optical lens is f. When the imaging optical lens satisfies the following relationship: 0.10 < TL * Fno / f < 3.0, the light input range of the lens can be expanded, the total length of the lens can be shortened, and the viewing angle of the lens can be controlled, which is beneficial to the function of telephoto shooting; preferably, 0.10 < TL * Fno / f < 2.50; preferably, 0.50 < TL * Fno / f < 2.10; preferably, 0.50 < TL * Fno / f < 1.85.

[0119] The maximum image height of the imaging optical lens is ImgH, and the focal length of the imaging optical lens is f. When the imaging optical lens satisfies the following relationship: 0.10 < ImgH / f < 0.53, it can help control the shooting range and the field angle, so as to improve the resolution of the local image, and then achieve a better long-distance shooting effect; preferably, 0.10 < ImgH / f < 0.47.

[0120] The minimum value of the Abbe numbers of the seven lenses is Vmin. When the imaging optical lens satisfies the following relationship: 8.0 < Vmin < 25.0, it can help balance the converging ability of light rays of different wavelength bands of the lens to correct chromatic aberration; preferably, 10.0 < Vmin < 23.0; preferably, 10.0 < Vmin < 21.0.

[0121] The Abbe number of the positive refractive power lens among the seven lenses is Vp. When at least one positive refractive power lens in the imaging optical lens satisfies the following relationship: Vp < 25.0, it can effectively control the distribution of the light scattering ability in the lens, so as to help achieve a diverse shooting range.

[0122] The focal length of the first lens is f1, and the focal length of the second lens is f2. When the imaging optical lens satisfies the following relationship: |f2 / f1| < 1.20, it can balance the refractive power of the first lens and the second lens to avoid excessive aberration caused by too large surface curvature of the lens; preferably, |f2 / f1| < 0.80; preferably, |f2 / f1| < 0.65; preferably, |f2 / f1| < 0.30.

[0123] The present invention may further include an aperture. The distance between the aperture and the image side of the seventh lens on the optical axis is SD, and the distance between the object side of the first lens and the image side of the seventh lens on the optical axis is TD. When the imaging optical lens satisfies the following relationship: 0.60 < SD / TD < 0.90, it can effectively balance the aperture position to help control the lens volume.

[0124] Half of the maximum viewing angle of the imaging optical lens is HFOV. When the imaging optical lens satisfies the following relationship: 0.10 < tan(HFOV) < 0.47, it can regulate the image range that the lens can shoot and at the same time enhance the clarity of long-distance shooting; preferably, 0.14 < tan(HFOV) < 0.43.

[0125] The minimum value of the thickness of each lens on the optical axis among the seven lenses is CTmin, and the focal length of the imaging optical lens is f. When the imaging optical lens satisfies the following relationship: 1.0 < (CTmin / f) * 100 < 3.70, it can balance the spatial configuration of the lens thickness to facilitate achieving the function of long-distance shooting.

[0126] The focal length of the imaging optical lens is f, and the entrance pupil diameter of the imaging optical lens is EPD. When the imaging optical lens satisfies the following relationship: 1.0 < f / EPD < 1.90, the light entrance aperture of the lens can be effectively adjusted, and the light input amount of the lens can be controlled to improve the image brightness.

[0127] The distance on the optical axis between the image side of the seventh lens and the imaging surface is BL, and the distance on the optical axis between the object side of the first lens and the image side of the seventh lens is TD. When the imaging optical lens satisfies the following relationship: 0.05 < BL / TD < 0.35, the back focal length of the lens can be controlled to reduce the lens volume and achieve the effect of miniaturization.

[0128] The Abbe number of each lens in the seven lenses is V (such as the Abbe number of the fourth lens is V4, the Abbe number of the fifth lens is V5, and the Abbe number of the sixth lens is V6). When the Abbe number configuration of at least two lenses in the imaging optical lens is between 10.0 and 20.0, the axial chromatic aberration of the overall lens can be balanced to achieve better imaging quality.

[0129] The focal length of the imaging optical lens is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, and the focal length of the seventh lens is f7. The minimum value of |f / f1|, |f / f2|, |f / f3|, |f / f4|, |f / f5|, |f / f6|, and |f / f7| is |f / fi|min. When the imaging optical lens satisfies the following relationship: |f / fi|min < 0.10, at least one correction lens can be provided in the lens to facilitate lens aberration correction.

[0130] The perpendicular distance between an inflection point on the surface of a lens of the imaging optical lens and the optical axis is Yp, and the focal length of the imaging optical lens is f. When at least one lens surface of the sixth lens and the seventh lens satisfies the following relationship: 0.01 < Yp / f < 1.0, the off-axis aberration correction ability can be improved to facilitate reducing the off-axis image point and shortening the total length of the lens.

[0131] The distance between the first lens and the second lens on the optical axis is T12, the distance between the second lens and the third lens on the optical axis is T23, the distance between the third lens and the fourth lens on the optical axis is T34, the distance between the fourth lens and the fifth lens on the optical axis is T45, and the distance between the fifth lens and the sixth lens on the optical axis is T56. When the imaging optical lens satisfies the following relationship: 1.40 < (T45 + T56) / (T12 + T23 + T34) < 40.0, the spatial configuration can be balanced, thereby reducing the sensitivity to improve the lens performance and achieving more diverse application fields. Preferably, 2.0 < (T45 + T56) / (T12 + T23 + T34) < 15.0.

[0132] The distance between the object side surface of the first lens and the imaging surface on the optical axis is TL, and the focal length of the imaging optical lens is f. When the imaging optical lens satisfies the following relationship: 0.30 < TL / f < 1.25, high resolution of local images can be pursued while suppressing the total length of the lens. Preferably, 0.50 < TL / f < 1.15.

[0133] The maximum value of the refractive indices of the seven lenses is Nmax. When the imaging optical lens satisfies the following relationship: 1.58 < Nmax < 1.72, the lens can ensure sufficient optical path control ability, while meeting the diversity of lens surface shapes to correct various off-axis aberrations.

[0134] The focal length of the imaging optical lens is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, and the focal length of the seventh lens is f7. When the imaging optical lens satisfies the following relationship: 0.10 < (|f / f1| + |f / f3| + |f / f4| + |f / f5| + |f / f6| + |f / f7|) / |f / f2| < 3.80, the object side of the lens can ensure sufficient refractive power to facilitate controlling the total length of the lens and avoiding excessive device volume. Preferably, 0.50 < (|f / f1| + |f / f3| + |f / f4| + |f / f5| + |f / f6| + |f / f7|) / |f / f2| < 3.0.

[0135] The maximum value of the thickness of each lens on the optical axis among the seven lenses is CTmax, and the thickness of the second lens on the optical axis is CT₂. When the imaging optical lens satisfies the following relationship: 1.0 ≤ CTmax / CT₂ < 1.20, the lens thickness distribution can be strengthened to ensure that the second lens has sufficient optical path control ability to effectively control the lens aberration. Preferably, CTmax / CT₂ = 1.0.

[0136] The radius of curvature of the object side surface of the second lens is R3, and the radius of curvature of the image side surface of the second lens is R4. When the imaging optical lens satisfies the following relationship: -10.0 < (R3 + R4) / (R3 - R4) < 1.0, the shape of the second lens can be effectively controlled, and the optical path control ability of the second lens can be concentrated in the object side direction of the lens, so as to balance the aberration generated by the first lens; preferably, -2.0 < (R3 + R4) / (R3 - R4) < 0.30; preferably, -1.50 < (R3 + R4) / (R3 - R4) < 0.

[0137] The distance between the object side surface of the first lens and the imaging surface on the optical axis is TL, and the maximum image height of the imaging optical lens is ImgH (that is, half of the total length of the diagonal of the effective sensing area of the electronic photosensitive element). When the imaging optical lens satisfies the following relationship: 1.50 < TL / ImgH < 3.30, while pursuing miniaturization of the lens, a sufficient light receiving area can be maintained to maintain sufficient brightness of the image; preferably, 2.0 < TL / ImgH < 3.0.

[0138] The maximum effective radius of the object side surface of the first lens is Y11, and the maximum image height of the imaging optical lens is ImgH. When the imaging optical lens satisfies the following relationship: 0.65 < Y11 / ImgH < 1.50, the ratio of the light incident range to the imaging area can be balanced, so that the lens has sufficient light to improve the image brightness.

[0139] The entrance pupil diameter of the imaging optical lens is EPD, and the maximum value among the maximum effective radii of the object side surfaces and image side surfaces of the seven lenses is Ymax. When the imaging optical lens satisfies the following relationship: 1.40 < EPD / Ymax < 2.50, the difference between the entrance light aperture of the lens and the size of the lens can be balanced, so that the light of the lens can be effectively utilized to increase the image brightness.

[0140] The Abbe number of the fourth lens is V4. When the imaging optical lens satisfies the following relationship: 8.0 < V4 < 30.0, the density difference between the material of the fourth lens and air can be strengthened, so as to achieve a strong optical path control ability in a limited space.

[0141] The Abbe number of the sixth lens is V6. When the imaging optical lens satisfies the following relationship: 8.0 < V6 < 30.0, the density difference between the material of the sixth lens and air can be strengthened, so as to achieve a strong optical path control ability in a limited space.

[0142] The first lens and the second lens are the first lens group, and the third lens, the fourth lens and the fifth lens are the second lens group. When there is a spacing distance between the first lens group and the second lens group, sufficient freedom inside the lens can be ensured, which is beneficial to correcting various aberrations.

[0143] The combined focal length of the first lens and the second lens is f12, and the combined focal length of the third lens, the fourth lens, and the fifth lens is f345. When the imaging optical lens satisfies the following relationship: -1.0 < f12 / f345 < 0, the refractive power distribution between the object side and the middle section of the lens can be balanced to effectively control the viewing angle of the lens.

[0144] The distance parallel to the optical axis between the center of the image side surface of the seventh lens and the position of the maximum effective radius is SAG72, and the thickness of the seventh lens on the optical axis is CT7. When the imaging optical lens satisfies the following relationship: -3.50 < SAG72 / CT7 < -0.20, the shape and thickness of the seventh lens can be adjusted to facilitate lens forming and peripheral aberration correction.

[0145] Among the seven lenses, the one with the smallest effective radius can be the fourth lens or the fifth lens, which is beneficial to balancing the lens size distribution of the lens, improving the symmetry of the lens, and thus avoiding excessive aberration.

[0146] All the technical features in the above-mentioned imaging optical lens of the present invention can be combined and configured to achieve the corresponding effects.

[0147] In the imaging optical lens disclosed in the present invention, the definition of the inflection point is the curve of the lens surface from the optical axis to the lens periphery, and the conversion point where the center of curvature of the curve moves from the object side to the image side (or from the image side to the object side).

[0148] In the imaging optical lens disclosed in the present invention, the material of the lens can be glass or plastic. If the material of the lens is glass, the degree of freedom of refractive power configuration of the imaging optical lens can be increased, and the glass lens can be made by techniques such as grinding or molding. If the lens material is plastic, the production cost can be effectively reduced. In addition, an aspherical surface (ASP) can be set on the lens surface to obtain more control variables, thereby reducing aberrations, reducing the number of lenses, and effectively reducing the total length of the imaging optical lens of the present invention. The aspherical surface can be made by methods such as plastic injection molding or molding of glass lenses.

[0149] In the imaging optical lens disclosed in the present invention, 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.

[0150] In the imaging optical lens disclosed in the present invention, at least one stop can be set, such as an aperture stop, a glare stop, or a field stop, etc., which helps to reduce stray light to improve image quality.

[0151] In the imaging optical lens disclosed in this invention, the aperture configuration can be front-mounted or center-mounted. A front-mounted aperture means that the aperture is set between the subject and the first lens, while a center-mounted aperture means that the aperture is set between the first lens and the imaging plane. A front-mounted aperture can create a longer distance between the exit pupil of the imaging optical lens and the imaging plane, giving it a telecentric effect, which can increase the efficiency of electronic image sensors such as CCD or CMOS in receiving images. A center-mounted aperture helps to expand the field of view of the lens, giving the imaging optical lens the advantages of a wide-angle lens.

[0152] 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, and image quality, such as depth of field or exposure speed, can be adjusted by changing the F-value.

[0153] In the imaging optical lens disclosed in this invention, if the lens surface is convex and the location of the convex surface is not defined, it means that the lens surface can be convex near the optical axis; if the lens surface is concave and the location of the concave surface is not defined, it means that the lens surface can be concave near the optical axis. If the refractive power or focal length of the lens is not defined in its region, it means that the refractive power or focal length of the lens can be the refractive power or focal length of the lens near the optical axis.

[0154] In the imaging optical lens disclosed in this invention, the imaging surface of the imaging optical lens can be a plane or a curved surface with any curvature, depending on the corresponding electronic photosensitive element, particularly a curved surface with a concave surface facing the object side. Furthermore, one or more imaging correction elements (such as planar elements) can be selectively arranged between the lens closest to the imaging surface and the imaging surface in the imaging optical lens of this invention to achieve the effect of correcting image curvature (such as image distortion). The optical properties of this imaging correction element, such as curvature, thickness, refractive index, position, and surface shape (convex or concave, spherical or aspherical, diffractive surface, and Fresnel surface, etc.), can be adjusted according to the requirements of the imaging device. Generally, a preferred imaging correction element configuration is a thin plano-concave element with a concave surface facing the object side positioned close to the imaging surface.

[0155] The imaging optical lens and imaging device disclosed in this invention will be described in detail with reference to the following specific embodiments and accompanying drawings.

[0156] First Embodiment

[0157] Please refer to the first embodiment of the present invention. Figure 1APlease refer to the aberration curve of the first embodiment. Figure 1B The imaging device of the first embodiment includes an imaging optical lens (not otherwise labeled) and an electronic photosensitive element 190. The imaging optical lens includes, from the object side to the image side, 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 and a seventh lens 170, wherein there are no other interposed lenses between the first lens 110 and the seventh lens 170.

[0158] The first lens 110 has positive refractive power and is made of plastic. Its object side 111 is convex near the optical axis and its image side 112 is concave near the optical axis. Both the object side 111 and the image side 112 are aspherical and the image side 112 has at least one inflection point.

[0159] The second lens 120 has positive refractive power and is made of glass. Its object side 121 is convex near the optical axis, and its image side 122 is convex near the optical axis. Both its object side 121 and image side 122 are aspherical, and its object side 121 has at least one inflection point.

[0160] The third lens 130 has negative refractive power and is made of glass. Its object side 131 is concave near the optical axis, and its image side 132 is concave near the optical axis. Both its object side 131 and image side 132 are aspherical, and its object side 131 has at least one inflection point.

[0161] The fourth lens 140 has positive refractive power and is made of plastic. Its object side 141 is convex near the optical axis and its image side 142 is concave near the optical axis. Both its object side 141 and image side 142 are aspherical and its image side 142 has at least one inflection point.

[0162] The fifth lens 150 has positive refractive power and is made of plastic. Its object side 151 is convex near the optical axis and its image side 152 is concave near the optical axis. Both its object side 151 and image side 152 are aspherical and each has at least one inflection point.

[0163] The sixth lens 160 has positive refractive power and is made of glass. Its object side 161 is convex near the optical axis and its image side 162 is concave near the optical axis. Both its object side 161 and image side 162 are aspherical. Its object side 161 has one inflection point and its image side 162 has two inflection points.

[0164] The seventh lens 170 has negative refractive power and is made of plastic. Its object side 171 is concave near the optical axis, and its image side 172 is convex near the optical axis. Both its object side 171 and image side 172 are aspherical, and its object side 171 has a point of inflection.

[0165] A filter element 180 is disposed between the seventh lens 170 and the imaging surface 190. It is made of glass and does not affect the focal length. An electronic image sensor 195 is disposed on the imaging surface 190.

[0166] Of the seven lenses in the imaging optical lens, the fourth lens, 140, has the smallest effective radius. In addition, at least two of the seven lenses have Abbe numbers between 10.0 and 20.0 (the fourth lens, 140, has an Abbe number V4 = 19.5, and the fifth lens, 150, has an Abbe number V5 = 19.5).

[0167] Please refer to Figure 11 The diagram illustrates parameters Yp61a, Yp62a, Yp62b, Yp71a and inflection points IP61a, IP62a, IP62b, IP71a, using the first embodiment of the present invention as an example. The object side 161 of the sixth lens has one inflection point IP61a, the image side 162 of the sixth lens has two inflection points IP62a and IP62b, and the object side 171 of the seventh lens has one inflection point IP71a. The perpendicular distance between the inflection point IP61a and the optical axis is Yp61a, the perpendicular distances between the inflection points IP62a and IP62b and the optical axis are Yp62a and Yp62b, and the perpendicular distance between the inflection point IP71a and the optical axis is Yp71a.

[0168] Detailed optical data for the first embodiment are shown in Table 1. The units for radius of curvature, thickness, and focal length are millimeters. f represents the focal length, Fno represents the aperture value, HFOV represents half of the maximum angle of view, and surfaces 0-18 sequentially represent surfaces from the object side to the image side. The aspherical data are shown in Table 2. k represents the cone coefficient in the aspherical curve equation, and A4-A16 represent the 4th-16th order aspherical coefficients of each surface. Furthermore, the tables for the following embodiments are corresponding schematic diagrams and aberration curves for each embodiment. The definitions of the data in the tables are the same as those in Tables 1 and 2 of the first embodiment, and will not be repeated here.

[0169]

[0170]

[0171]

[0172] The equation for the aforementioned aspherical curve is expressed as follows:

[0173]

[0174] in,

[0175] X: The distance between a point on the aspherical surface at a distance Y from the optical axis and the tangent plane at the vertex on the optical axis of the aspherical surface;

[0176] Y: The perpendicular distance between a point on the aspherical curve and the optical axis;

[0177] R: Radius of curvature;

[0178] k: Conical coefficient;

[0179] Ai: The i-th order aspherical coefficient.

[0180] In the first embodiment, the focal length of the imaging optical lens is f, the aperture value of the imaging optical lens is Fno, and half of the maximum angle of view in the imaging optical lens is HFOV, with the following values: f = 5.91 (mm), Fno = 1.83, HFOV = 21.4 (degrees).

[0181] In the first embodiment, the Abbe number of the fourth lens 140 is V4, and its value is: V4 = 19.5.

[0182] In the first embodiment, the Abbe number of the sixth lens 160 is V6, and its value is: V6 = 27.5.

[0183] In the first embodiment, the minimum Abbe number among the seven lenses is Vmin, which is Vmin = 19.5 (the lens with the smallest Abbe number is the fourth lens 140 or the fifth lens 150).

[0184] In the first embodiment, the maximum refractive index among the seven lenses is Nmax, which is Nmax = 1.755 (the lens with the largest refractive index is the third lens 130 or the sixth lens 160).

[0185] In the first embodiment, the maximum thickness of each of the seven lenses on the optical axis is CTmax, and the thickness of the second lens 120 on the optical axis is CT2, which satisfies the relationship: CTmax / CT2=1.00.

[0186] In the first embodiment, the minimum thickness of each of the seven lenses on the optical axis is CTmin, and the focal length of the imaging optical lens is f, which satisfies the relationship: (CTmin / f)*100=2.71.

[0187] In the first embodiment, the distance on the optical axis between the first lens 110 and the second lens 120 is T12, the distance on the optical axis between the second lens 120 and the third lens 130 is T23, the distance on the optical axis between the third lens 130 and the fourth lens 140 is T34, the distance on the optical axis between the fourth lens 140 and the fifth lens 150 is T45, and the distance on the optical axis between the fifth lens 150 and the sixth lens 160 is T56, which satisfies the relationship: (T45+T56) / (T12+T23+T34)=2.31.

[0188] In the first embodiment, the radius of curvature of the object side 121 of the second lens is R3, and the radius of curvature of the image side 122 of the second lens is R4, which satisfies the relationship: (R3+R4) / (R3-R4)=-0.61.

[0189] In the first embodiment, the focal length of the first lens 110 is f1, and the focal length of the second lens 120 is f2, which satisfy the relationship: |f2 / f1|=0.03.

[0190] In the first embodiment, the focal length of the imaging optical lens is f, the focal length of the first lens 110 is f1, the focal length of the second lens 120 is f2, the focal length of the third lens 130 is f3, the focal length of the fourth lens 140 is f4, the focal length of the fifth lens 150 is f5, the focal length of the sixth lens 160 is f6, and the focal length of the seventh lens 170 is f7. The minimum value among |f / f1|, |f / f2|, |f / f3|, |f / f4|, |f / f5|, |f / f6|, and |f / f7| is |f / fi|min, which satisfies the relationship: |f / fi|min=0.08 (the minimum is |f / f1|).

[0191] In the first embodiment, the focal length of the imaging optical lens is f, the focal length of the first lens 110 is f1, the focal length of the second lens 120 is f2, the focal length of the third lens 130 is f3, the focal length of the fourth lens 140 is f4, the focal length of the fifth lens 150 is f5, the focal length of the sixth lens 160 is f6, and the focal length of the seventh lens 170 is f7. They satisfy the following relationship: (|f / f1|+|f / f3|+|f / f4|+|f / f5|+|f / f6|+|f / f7|) / |f / f2|=2.01.

[0192] In the first embodiment, the distance on the optical axis between the object side 111 of the first lens and the imaging surface 190 is TL, and the focal length of the imaging optical lens is f, which satisfies the relationship: TL / f=0.99.

[0193] In the first embodiment, the distance on the optical axis between the image side 172 of the seventh lens and the imaging surface 190 is BL, and the distance on the optical axis between the object side 111 of the first lens and the image side 172 of the seventh lens is TD, which satisfies the relationship: BL / TD = 0.08.

[0194] In the first embodiment, the focal length of the imaging optical lens is f, and the maximum image height of the imaging optical lens is ImgH, which satisfies the relationship: ImgH / f=0.41.

[0195] In the first embodiment, the distance on the optical axis between the aperture 100 and the image side 172 of the seventh lens is SD, and the distance on the optical axis between the object side 111 of the first lens and the image side 172 of the seventh lens is TD, which satisfies the relationship: SD / TD = 0.87.

[0196] In the first embodiment, the distance on the optical axis between the object side 111 of the first lens and the imaging surface 190 is TL, the aperture value of the imaging optical lens is Fno, and the focal length of the imaging optical lens is f, which satisfies the relationship: TL*Fno / f=1.81.

[0197] In the first embodiment, the distance on the optical axis between the object side 111 of the first lens and the imaging surface 190 is TL, and the maximum image height of the imaging optical lens is ImgH, which satisfies the relationship: TL / ImgH=2.44.

[0198] In the first embodiment, the maximum effective radius of the object side 111 of the first lens is Y11, and the maximum image height of the imaging optical lens is ImgH, which satisfies the relationship: Y11 / ImgH=0.69.

[0199] In the first embodiment, the entrance pupil diameter of the imaging optical lens is EPD, and the maximum value of the maximum effective radius of the object side and image side of the seven lenses is Ymax, which satisfies the relationship: EPD / Ymax=1.62.

[0200] In the first embodiment, the distance from the center of the image side 172 of the seventh lens to the maximum effective radius parallel to the optical axis is SAG72, and the thickness of the seventh lens 170 on the optical axis is CT7, which satisfies the relationship: SAG72 / CT7=-2.61.

[0201] In the first embodiment, half of the maximum field of view in the imaging optical lens is HFOV, which satisfies the relationship: tan(HFOV) = 0.39.

[0202] In the first embodiment, the combined focal length of the first lens 110 and the second lens 120 is f12, and the combined focal length of the third lens 130, the fourth lens 140 and the fifth lens 150 is f345, which satisfies the relationship: f12 / f345=-0.79.

[0203] In the first embodiment, the Abbe number of the lens with positive refractive power among the seven lenses is Vp, and its corresponding values ​​are: Vp = 55.9 (first lens 110), 70.2 (second lens 120), 19.5 (fourth lens 140), 19.5 (fifth lens 150) or 27.5 (sixth lens 160).

[0204] In the first embodiment, the focal length of the imaging optical lens is f, and the entrance pupil diameter of the imaging optical lens is EPD, which satisfies the relationship: f / EPD=1.83.

[0205] In the first embodiment, the vertical distance between the inflection point (also referred to as IP61a in this embodiment) of the sixth lens object side 161 and the optical axis is Yp61, and the focal length of the imaging optical lens is f, which satisfies the relationship: Yp61 / f=0.05.

[0206] In the first embodiment, the vertical distance between the inversion point (there are two in this embodiment, also referred to as IP62a and IP62b) on the image side 162 of the sixth lens and the optical axis is Yp62 (also referred to as Yp62a and Yp62b, corresponding to IP62a and IP62b respectively). The focal length of the imaging optical lens is f, which satisfies the following relationship: Yp62 / f = 0.030 (corresponding to inversion point IP62a) or 0.237 (corresponding to inversion point IP62b).

[0207] In the first embodiment, the vertical distance between the inflection point IP71a of the object side 171 of the seventh lens and the optical axis is Yp71, and the focal length of the imaging optical lens is f, which satisfies the relationship: Yp71 / f=0.22.

[0208] Second Embodiment

[0209] Please refer to the second embodiment of the present invention. Figure 2A Please refer to the aberration curve of the second embodiment. Figure 2B The imaging device of the second embodiment includes an imaging optical lens (not otherwise labeled) and an electronic photosensitive element 290. The imaging optical lens includes, from the object side to the image side, an aperture 200, a first lens 210, a second lens 220, a third lens 230, a fourth lens 240, a fifth lens 250, a sixth lens 260, and a seventh lens 270, wherein there are no other interposed lenses between the first lens 210 and the seventh lens 270.

[0210] The first lens 210 has negative refractive power and is made of plastic. Its object side 211 is convex near the optical axis and its image side 212 is concave near the optical axis. Both its object side 211 and image side 212 are aspherical and its image side 212 has at least one inflection point.

[0211] The second lens 220 has positive refractive power and is made of glass. Its object side 221 is convex near the optical axis, and its image side 222 is convex near the optical axis. Both its object side 221 and image side 222 are aspherical, and its object side 221 has at least one inflection point.

[0212] The third lens 230 has negative refractive power and is made of glass. Its object side 231 is concave near the optical axis, and its image side 232 is concave near the optical axis. Both its object side 231 and image side 232 are aspherical, and its object side 231 has at least one inflection point.

[0213] The fourth lens 240 has positive refractive power and is made of plastic. Its object side 241 is convex near the optical axis, and its image side 242 is convex near the optical axis. Both its object side 241 and image side 242 are aspherical, and both its object side 241 and image side 242 have at least one inflection point.

[0214] The fifth lens 250 has positive refractive power and is made of plastic. Its object side 251 is convex near the optical axis, and its image side 252 is concave near the optical axis. Both its object side 251 and image side 252 are aspherical.

[0215] The sixth lens 260 has positive refractive power and is made of glass. Its object side 261 is convex near the optical axis and its image side 262 is concave near the optical axis. Both its object side 261 and image side 262 are aspherical. Its object side 261 has one inflection point and its image side 262 has two inflection points.

[0216] The seventh lens 270 has negative refractive power and is made of plastic. Its object side 271 is concave near the optical axis, and its image side 272 is convex near the optical axis. Both its object side 271 and image side 272 are aspherical, and its object side 271 has a point of inflection.

[0217] A filter element 280 is disposed between the seventh lens 270 and the imaging surface 290. It is made of glass and does not affect the focal length. An electronic image sensor 295 is disposed on the imaging surface 290.

[0218] Of the seven lenses in the imaging optical lens, the fourth lens, 240, has the smallest effective radius. In addition, at least two of the seven lenses have Abbe numbers between 10.0 and 20.0 (the fourth lens, 240, has an Abbe number V4 = 19.5, and the fifth lens, 250, has an Abbe number V5 = 19.5).

[0219] The detailed optical data of the second embodiment are shown in Table 3, and its aspherical data are shown in Table 4.

[0220]

[0221]

[0222]

[0223] The equations for the aspherical curves in the second embodiment are expressed in the same form as in the first embodiment. Furthermore, the parameters of each relation are as explained in the first embodiment, except that the numerical values ​​of each relation are listed in the table below.

[0224]

[0225]

[0226] Third Embodiment

[0227] Please refer to the third embodiment of the present invention. Figure 3A Please refer to the aberration curve of the third embodiment. Figure 3B The imaging device of the third embodiment includes an imaging optical lens (not otherwise labeled) and an electronic photosensitive element 390. The imaging optical lens includes, from the object side to the image side, a first lens 310, an aperture 300, a second lens 320, a third lens 330, a fourth lens 340, a fifth lens 350, a sixth lens 360, and a seventh lens 370, wherein there are no other interposed lenses between the first lens 310 and the seventh lens 370.

[0228] The first lens 310 has positive refractive power and is made of plastic. Its object side 311 is convex near the optical axis and its image side 312 is concave near the optical axis. Both its object side 311 and image side 312 are aspherical and its image side 312 has at least one inflection point.

[0229] The second lens 320 has positive refractive power and is made of glass. Its object side 321 is convex near the optical axis, and its image side 322 is convex near the optical axis. Both its object side 321 and image side 322 are aspherical, and both its object side 321 and image side 322 have at least one inflection point.

[0230] The third lens 330 has negative refractive power and is made of glass. Its object side 331 is concave near the optical axis, and its image side 332 is concave near the optical axis. Both its object side 331 and image side 332 are aspherical, and its object side 331 has at least one inflection point.

[0231] The fourth lens 340 has positive refractive power and is made of plastic. Its object side 341 is convex near the optical axis, and its image side 342 is convex near the optical axis. Both its object side 341 and image side 342 are aspherical, and both its object side 341 and image side 342 have at least one inflection point.

[0232] The fifth lens 350 has negative refractive power and is made of plastic. Its object side 351 is convex near the optical axis, and its image side 352 is concave near the optical axis. Both its object side 351 and image side 352 are aspherical.

[0233] The sixth lens 360 has positive refractive power and is made of glass. Its object side 361 is convex near the optical axis, and its image side 362 is concave near the optical axis. Both its object side 361 and image side 362 are aspherical. Its object side 361 has two inflection points, and its image side 362 has two inflection points.

[0234] The seventh lens 370 has negative refractive power and is made of plastic. Its object side 371 is concave near the optical axis, and its image side 372 is convex near the optical axis. Both the object side 371 and the image side 372 are aspherical. The object side 371 has a recurve point, and the image side 372 has a recurve point.

[0235] A filter element 380 is disposed between the seventh lens 370 and the imaging surface 390. It is made of glass and does not affect the focal length. An electronic image sensor 395 is disposed on the imaging surface 390.

[0236] Of the seven lenses in the imaging optical lens, the fourth lens, 340, has the smallest effective radius. In addition, at least two of the seven lenses have Abbe numbers between 10.0 and 20.0 (the fourth lens, 340, has an Abbe number V4 = 19.5, and the fifth lens, 350, has an Abbe number V5 = 19.5).

[0237] The detailed optical data of the third embodiment are shown in Table 5, and its aspherical data are shown in Table 6.

[0238]

[0239]

[0240]

[0241] The equation for the aspherical curve in the third embodiment is expressed in the same form as in the first embodiment. In the third embodiment, the perpendicular distance between the inflection point IP72 of the image side 372 of the seventh lens and the optical axis is Yp72, and the focal length of the imaging optical lens is f. The relationship is: Yp72 / f = 0.314. Furthermore, the parameters of each relationship are as explained in the first embodiment, except that the values ​​of each relationship are listed in the table below.

[0242]

[0243] Fourth Embodiment

[0244] Please refer to the fourth embodiment of the present invention. Figure 4A Please refer to the aberration curve of the fourth embodiment. Figure 4BThe imaging device of the fourth embodiment includes an imaging optical lens (not otherwise labeled) and an electronic photosensitive element 490. The imaging optical lens includes, from the object side to the image side, a first lens 410, an aperture 400, a second lens 420, a third lens 430, a fourth lens 440, a fifth lens 450, a sixth lens 460, and a seventh lens 470, wherein there are no other interposed lenses between the first lens 410 and the seventh lens 470.

[0245] The first lens 410 has positive refractive power and is made of plastic. Its object side 411 is convex near the optical axis and its image side 412 is concave near the optical axis. Both the object side 411 and the image side 412 are aspherical.

[0246] The second lens 420 has positive refractive power and is made of plastic. Its object side 421 is convex near the optical axis and its image side 422 is concave near the optical axis. Both its object side 421 and image side 422 are aspherical and both have at least one inflection point.

[0247] The third lens 430 has positive refractive power and is made of plastic. Its object side 431 is convex near the optical axis, and its image side 432 is convex near the optical axis. Both its object side 431 and image side 432 are aspherical, and both its object side 431 and image side 432 have at least one inflection point.

[0248] The fourth lens 440 has negative refractive power and is made of plastic. Its object side 441 is convex near the optical axis and its image side 442 is concave near the optical axis. Both its object side 441 and image side 442 are aspherical. Its object side 441 has at least one inflection point.

[0249] The fifth lens 450 has negative refractive power and is made of plastic. Its object side 451 is concave near the optical axis and its image side 452 is convex near the optical axis. Both its object side 451 and image side 452 are aspherical. Its object side 451 has at least one inflection point.

[0250] The sixth lens 460 has positive refractive power and is made of plastic. Its object side 461 is concave near the optical axis, and its image side 462 is convex near the optical axis. Both its object side 461 and image side 462 are aspherical.

[0251] The seventh lens 470 has negative refractive power and is made of plastic. Its object side 471 is convex near the optical axis, and its image side 472 is concave near the optical axis and has at least one convex surface off the axis. Both the object side 471 and the image side 472 are aspherical. The object side 471 has a recurve point, and the image side 472 has a recurve point.

[0252] A filter element 480 is disposed between the seventh lens 470 and the imaging surface 490. It is made of glass and does not affect the focal length. An electronic image sensor 495 is disposed on the imaging surface 490.

[0253] Of the seven lenses in the imaging optical lens, the fifth lens (450) has the smallest effective radius. In addition, at least two of the seven lenses have Abbe numbers between 10.0 and 20.0 (the fourth lens (440) has an Abbe number V4 = 18.7, and the sixth lens (460) has an Abbe number V6 = 18.7).

[0254] The detailed optical data of the fourth embodiment are shown in Table 7, and its aspherical data are shown in Table 8.

[0255]

[0256]

[0257]

[0258] The equations for the aspherical curves in the fourth embodiment are expressed in the same form as in the first embodiment. Furthermore, the parameters of each relation are as explained in the third embodiment, except that the numerical values ​​of each relation are listed in the table below.

[0259]

[0260] Fifth Embodiment

[0261] Please refer to the fifth embodiment of the present invention. Figure 5A Please refer to the aberration curve of the fifth embodiment. Figure 5B The imaging device of the fifth embodiment includes an imaging optical lens (unspecified) and an electronic photosensitive element 590. The imaging optical lens includes, from the object side to the image side, a first lens 510, an aperture 500, a second lens 520, a third lens 530, a fourth lens 540, a fifth lens 550, a sixth lens 560, and a seventh lens 570, wherein there are no other interposed lenses between the first lens 510 and the seventh lens 570.

[0262] The first lens 510 has positive refractive power and is made of plastic. Its object side 511 is convex near the optical axis and its image side 512 is concave near the optical axis. Both the object side 511 and the image side 512 are aspherical.

[0263] The second lens 520 has positive refractive power and is made of plastic. Its object side 521 is convex near the optical axis, and its image side 522 is convex near the optical axis. Both its object side 521 and image side 522 are aspherical, and both its object side 521 and image side 522 have at least one inflection point.

[0264] The third lens 530 has negative refractive power and is made of plastic. Its object side 531 is concave near the optical axis, and its image side 532 is convex near the optical axis. Both its object side 531 and image side 532 are aspherical, and both its object side 531 and image side 532 have at least one inflection point.

[0265] The fourth lens 540 has negative refractive power and is made of plastic. Its object side 541 is convex near the optical axis, and its image side 542 is concave near the optical axis. Both its object side 541 and image side 542 are aspherical, and its object side 541 has at least one inflection point.

[0266] The fifth lens 550 has positive refractive power and is made of plastic. Its object side 551 is concave near the optical axis, and its image side 552 is convex near the optical axis. Both its object side 551 and image side 552 are aspherical, and its object side 551 has at least one inflection point.

[0267] The sixth lens 560 has positive refractive power and is made of plastic. Its object side 561 is concave near the optical axis, and its image side 562 is convex near the optical axis. Both its object side 561 and image side 562 are aspherical.

[0268] The seventh lens 570 has negative refractive power and is made of plastic. Its object side 571 is concave near the optical axis, and its image side 572 is concave near the optical axis and has at least one convex surface off the axis. Both its object side 571 and image side 572 are aspherical, and its image side 572 has a recurve point.

[0269] A filter element 580 is disposed between the seventh lens 570 and the imaging surface 590. It is made of glass and does not affect the focal length. An electronic image sensor 595 is disposed on the imaging surface 590.

[0270] Of the seven lenses in the imaging optical lens, the fifth lens, 550, has the smallest effective radius. In addition, at least two of the seven lenses have Abbe numbers between 10.0 and 20.0 (the fourth lens, 540, has an Abbe number V4 = 18.7, and the sixth lens, 560, has an Abbe number V6 = 18.7).

[0271] The detailed optical data for the fifth embodiment are shown in Table 9, and its aspherical data are shown in Table 10.

[0272]

[0273]

[0274]

[0275]

[0276] The equations for the aspherical curves in the fifth embodiment are expressed in the same form as in the first embodiment. Furthermore, the parameters of each relation are as explained in the third embodiment, except that the values ​​of each relation are listed in the table below.

[0277]

[0278] Sixth Embodiment

[0279] Please refer to the sixth embodiment of the present invention. Figure 6A Please refer to the aberration curve of the sixth embodiment. Figure 6B The imaging device of the sixth embodiment includes an imaging optical lens (unspecified) and an electronic photosensitive element 690. The imaging optical lens includes, from the object side to the image side, a first lens 610, a second lens 620, an aperture 600, a third lens 630, a fourth lens 640, a fifth lens 650, an aperture stop 601, a sixth lens 660, and a seventh lens 670, wherein there are no other interposed lenses between the first lens 610 and the seventh lens 670.

[0280] The first lens 610 has positive refractive power and is made of plastic. Its object side 611 is convex near the optical axis and its image side 612 is concave near the optical axis. Both the object side 611 and the image side 612 are aspherical.

[0281] The second lens 620 has positive refractive power and is made of plastic. Its object side 621 is convex near the optical axis, and its image side 622 is convex near the optical axis. Both the object side 621 and the image side 622 are aspherical, and the object side 621 has at least one inflection point.

[0282] The third lens 630 has negative refractive power and is made of plastic. Its object side 631 is convex near the optical axis, and its image side 632 is concave near the optical axis. Both its object side 631 and image side 632 are aspherical, and both its object side 631 and image side 632 have at least one inflection point.

[0283] The fourth lens 640 has negative refractive power and is made of plastic. Its object side 641 is convex near the optical axis, and its image side 642 is concave near the optical axis. Both its object side 641 and image side 642 are aspherical, and its object side 641 has at least one inflection point.

[0284] The fifth lens 650 has negative refractive power and is made of plastic. Its object side 651 is concave near the optical axis and its image side 652 is convex near the optical axis. Both its object side 651 and image side 652 are aspherical. Its object side 651 has at least one inflection point.

[0285] The sixth lens 660 has positive refractive power and is made of plastic. Its object side 661 is concave near the optical axis, and its image side 662 is convex near the optical axis. Both its object side 661 and image side 662 are aspherical, and its image side 662 has a point of inflection.

[0286] The seventh lens 670 has negative refractive power and is made of plastic. Its object side 671 is convex near the optical axis, and its image side 672 is concave near the optical axis and has at least one convex surface off the axis. Both the object side 671 and the image side 672 are aspherical. The object side 671 has three inflection points, and the image side 672 has one inflection point.

[0287] A filter element 680 is disposed between the seventh lens 670 and the imaging surface 690. It is made of glass and does not affect the focal length. An electronic image sensor 695 is disposed on the imaging surface 690.

[0288] Of the seven lenses in the imaging optical lens, the fifth lens, 650, has the smallest effective radius. In addition, at least two of the seven lenses have Abbe numbers between 10.0 and 20.0 (the fourth lens, 640, has an Abbe number V4 = 18.7, and the sixth lens, 660, has an Abbe number V6 = 18.7).

[0289] The detailed optical data for the sixth embodiment are shown in Table 11, and its aspherical data are shown in Table 12.

[0290]

[0291]

[0292]

[0293]

[0294] The equations for the aspherical curves in the sixth embodiment are expressed in the same form as in the first embodiment. Furthermore, the parameters of each relation are as explained in the third embodiment, except that the values ​​of each relation are listed in the table below.

[0295]

[0296] Seventh Embodiment

[0297] Please refer to the seventh embodiment of the present invention. Figure 7A Please refer to the aberration curve of the seventh embodiment. Figure 7BThe imaging device of the seventh embodiment includes an imaging optical lens (unspecified) and an electronic photosensitive element 790. The imaging optical lens includes, from the object side to the image side, a first lens 710, a second lens 720, an aperture 700, a third lens 730, a fourth lens 740, a fifth lens 750, an aperture stop 701, a sixth lens 760, and a seventh lens 770, wherein there are no other interposed lenses between the first lens 710 and the seventh lens 770.

[0298] The first lens 710 has positive refractive power and is made of plastic. Its object side 711 is convex near the optical axis and its image side 712 is concave near the optical axis. Both the object side 711 and the image side 712 are aspherical and the image side 712 has at least one inflection point.

[0299] The second lens 720 has positive refractive power and is made of plastic. Its object side 721 is convex near the optical axis, and its image side 722 is convex near the optical axis. Both its object side 721 and image side 722 are aspherical, and both its object side 721 and image side 722 have at least one inflection point.

[0300] The third lens 730 has negative refractive power and is made of plastic. Its object side 731 is convex near the optical axis, and its image side 732 is concave near the optical axis. Both its object side 731 and image side 732 are aspherical, and both its object side 731 and image side 732 have at least one inflection point.

[0301] The fourth lens 740 has negative refractive power and is made of plastic. Its object side 741 is convex near the optical axis, and its image side 742 is concave near the optical axis. Both the object side 741 and the image side 742 are aspherical.

[0302] The fifth lens 750 has negative refractive power and is made of plastic. Its object side 751 is concave near the optical axis, and its image side 752 is concave near the optical axis. Both its object side 751 and image side 752 are aspherical, and both its object side 751 and image side 752 have at least one inflection point.

[0303] The sixth lens 760 has positive refractive power and is made of plastic. Its object side 761 is concave near the optical axis, and its image side 762 is convex near the optical axis. Both its object side 761 and image side 762 are aspherical, and its image side 762 has a point of inflection.

[0304] The seventh lens 770 has negative refractive power and is made of plastic. Its object side 771 is convex near the optical axis, and its image side 772 is concave near the optical axis and has at least one convex surface off the axis. Both its object side 771 and image side 772 are aspherical. Its object side 771 has two inflection points, and its image side 772 has one inflection point.

[0305] A filter element 780 is disposed between the seventh lens 770 and the imaging surface 790. It is made of glass and does not affect the focal length. An electronic image sensor 795 is disposed on the imaging surface 790.

[0306] Of the seven lenses in the imaging optical lens, the fifth lens (750) has the smallest effective radius. In addition, at least two of the seven lenses have Abbe numbers between 10.0 and 20.0 (the fourth lens (740) has an Abbe number V4 = 18.7, and the sixth lens (760) has an Abbe number V6 = 18.7).

[0307] The detailed optical data for the seventh embodiment are shown in Table 13, and its aspherical data are shown in Table 14.

[0308]

[0309]

[0310]

[0311]

[0312] The equations for the aspherical curves in the seventh embodiment are expressed in the same form as in the first embodiment. Furthermore, the parameters of each relation are as explained in the third embodiment, except that the numerical values ​​of each relation are listed in the table below.

[0313]

[0314] Eighth Embodiment

[0315] Please refer to the eighth embodiment of the present invention. Figure 8A Please refer to the aberration curve of the eighth embodiment. Figure 8B The imaging device of the eighth embodiment includes an imaging optical lens (unspecified) and an electronic photosensitive element 890. The imaging optical lens includes, from the object side to the image side, a first lens 810, a second lens 820, an aperture 800, a third lens 830, a fourth lens 840, a fifth lens 850, an aperture stop 801, a sixth lens 860, and a seventh lens 870, wherein there are no other interposed lenses between the first lens 810 and the seventh lens 870.

[0316] The first lens 810 has positive refractive power and is made of plastic. Its object side 811 is convex near the optical axis and its image side 812 is concave near the optical axis. Both its object side 811 and image side 812 are aspherical and both have at least one inflection point.

[0317] The second lens 820 has positive refractive power and is made of plastic. Its object side 821 is convex near the optical axis, and its image side 822 is convex near the optical axis. Both its object side 821 and image side 822 are aspherical, and both its object side 821 and image side 822 have at least one inflection point.

[0318] The third lens 830 has negative refractive power and is made of plastic. Its object side 831 is convex near the optical axis, and its image side 832 is concave near the optical axis. Both its object side 831 and image side 832 are aspherical, and both its object side 831 and image side 832 have at least one inflection point.

[0319] The fourth lens 840 has negative refractive power and is made of plastic. Its object side 841 is concave near the optical axis, and its image side 842 is concave near the optical axis. Both its object side 841 and image side 842 are aspherical, and its object side 841 has at least one inflection point.

[0320] The fifth lens 850 has positive refractive power and is made of plastic. Its object side 851 is convex near the optical axis and its image side 852 is concave near the optical axis. Both its object side 851 and image side 852 are aspherical and each has at least one inflection point.

[0321] The sixth lens 860 has positive refractive power and is made of plastic. Its object side 861 is concave near the optical axis, and its image side 862 is convex near the optical axis. Both its object side 861 and image side 862 are aspherical.

[0322] The seventh lens 870 has negative refractive power and is made of plastic. Its object side 871 is concave near the optical axis, and its image side 872 is concave near the optical axis and has at least one convex surface off the axis. Both its object side 871 and image side 872 are aspherical, and its image side 872 has a recurve point.

[0323] A filter element 880 is disposed between the seventh lens 870 and the imaging surface 890. It is made of glass and does not affect the focal length. An electronic image sensor 895 is disposed on the imaging surface 890.

[0324] Of the seven lenses in the imaging optical lens, the fifth lens, 850, has the smallest effective radius. In addition, at least two of the seven lenses have Abbe numbers between 10.0 and 20.0 (the fourth lens, 840, has an Abbe number V4 = 18.7, and the sixth lens, 860, has an Abbe number V6 = 18.7).

[0325] The detailed optical data for the eighth embodiment are shown in Table 15, and its aspherical data are shown in Table 16.

[0326]

[0327]

[0328]

[0329] The equations for the aspherical curves in the eighth embodiment are expressed in the same form as in the first embodiment. Furthermore, the parameters of each relation are as explained in the third embodiment, except that the numerical values ​​of each relation are listed in the table below.

[0330]

[0331]

[0332] Ninth Embodiment

[0333] Please refer to the ninth embodiment of the present invention. Figure 9A Please refer to the aberration curve of the ninth embodiment. Figure 9B The imaging device of the ninth embodiment includes an imaging optical lens (not otherwise labeled) and an electronic photosensitive element 990. The imaging optical lens includes, from the object side to the image side, a first lens 910, a second lens 920, an aperture 900, a third lens 930, a fourth lens 940, a fifth lens 950, an aperture stop 901, a sixth lens 960, and a seventh lens 970, wherein there are no other interposed lenses between the first lens 910 and the seventh lens 970.

[0334] The first lens 910 has negative refractive power and is made of plastic. Its object side 911 is convex near the optical axis and its image side 912 is concave near the optical axis. Both the object side 911 and the image side 912 are aspherical and each has at least one inflection point.

[0335] The second lens 920 has positive refractive power and is made of plastic. Its object side 921 is convex near the optical axis, and its image side 922 is convex near the optical axis. Both its object side 921 and image side 922 are aspherical, and both its object side 921 and image side 922 have at least one inflection point.

[0336] The third lens 930 has positive refractive power and is made of plastic. Its object side 931 is convex near the optical axis, and its image side 932 is concave near the optical axis. Both its object side 931 and image side 932 are aspherical, and both its object side 931 and image side 932 have at least one inflection point.

[0337] The fourth lens 940 has negative refractive power and is made of plastic. Its object side 941 is concave near the optical axis, and its image side 942 is concave near the optical axis. Both its object side 941 and image side 942 are aspherical, and its object side 941 has at least one inflection point.

[0338] The fifth lens 950 has positive refractive power and is made of plastic. Its object side 951 is convex near the optical axis, and its image side 952 is concave near the optical axis. Both its object side 951 and image side 952 are aspherical, and both its object side 951 and image side 952 have at least one inflection point.

[0339] The sixth lens 960 has positive refractive power and is made of plastic. Its object side 961 is concave near the optical axis, and its image side 962 is convex near the optical axis. Both the object side 961 and the image side 962 are aspherical.

[0340] The seventh lens 970 has negative refractive power and is made of plastic. Its object side 971 is convex near the optical axis, and its image side 972 is concave near the optical axis and has at least one convex surface off the axis. Both its object side 971 and image side 972 are aspherical. Its object side 971 has a recurve point, and its image side 972 has a recurve point.

[0341] A filter element 980 is disposed between the seventh lens 970 and the imaging surface 990. It is made of glass and does not affect the focal length. An electronic image sensor 995 is disposed on the imaging surface 990.

[0342] Of the seven lenses in the imaging optical lens, the fifth lens (950) has the smallest effective radius. In addition, at least two of the seven lenses have Abbe numbers between 10.0 and 20.0 (the fourth lens (940) has an Abbe number V4 = 18.7, and the sixth lens (960) has an Abbe number V6 = 18.7).

[0343] The detailed optical data of the ninth embodiment are shown in Table 17, and its aspherical data are shown in Table 18.

[0344]

[0345]

[0346]

[0347] The equations for the aspherical curves in the ninth embodiment are expressed in the same form as in the first embodiment. Furthermore, the parameters of each relation are as explained in the third embodiment, except that the values ​​of each relation are listed in the table below.

[0348]

[0349]

[0350] The Tenth Embodiment

[0351] Please refer to the tenth embodiment of the present invention. Figure 10A Please refer to the aberration curve of the tenth embodiment. Figure 10BThe imaging device of the tenth embodiment includes an imaging optical lens (unspecified) and an electronic photosensitive element 1090. The imaging optical lens includes, from the object side to the image side, a first lens 1010, a second lens 1020, an aperture 1000, a third lens 1030, a fourth lens 1040, a fifth lens 1050, an aperture stop 1001, a sixth lens 1060, and a seventh lens 1070, wherein there are no other interposed lenses between the first lens 1010 and the seventh lens 1070.

[0352] The first lens 1010 has positive refractive power and is made of plastic. Its object side 1011 is convex near the optical axis and its image side 1012 is concave near the optical axis. Both its object side 1011 and image side 1012 are aspherical and both have at least one inflection point.

[0353] The second lens 1020 has positive refractive power and is made of plastic. Its object side 1021 is convex near the optical axis, and its image side 1022 is convex near the optical axis. Both its object side 1021 and image side 1022 are aspherical, and both its object side 1021 and image side 1022 have at least one inflection point.

[0354] The third lens 1030 has negative refractive power and is made of plastic. Its object side 1031 is convex near the optical axis, and its image side 1032 is concave near the optical axis. Both its object side 1031 and image side 1032 are aspherical, and both its object side 1031 and image side 1032 have at least one inflection point.

[0355] The fourth lens 1040 has negative refractive power and is made of plastic. Its object side 1041 is convex near the optical axis, and its image side 1042 is concave near the optical axis. Both its object side 1041 and image side 1042 are aspherical, and its object side 1011 has at least one inflection point.

[0356] The fifth lens 1050 has negative refractive power and is made of plastic. Its object side 1051 is concave near the optical axis, and its image side 1052 is concave near the optical axis. Both its object side 1051 and image side 1052 are aspherical, and both its object side 1051 and image side 1052 have at least one inflection point.

[0357] The sixth lens 1060 has negative refractive power and is made of plastic. Its object side 1061 is concave near the optical axis, and its image side 1062 is concave near the optical axis. Both its object side 1061 and image side 1062 are aspherical, and its image side 1062 has a point of inflection.

[0358] The seventh lens 1070 has positive refractive power and is made of plastic. Its object side 1071 is convex near the optical axis, and its image side 1072 is concave near the optical axis and has at least one convex surface off the axis. Both the object side 1071 and the image side 1072 are aspherical. The object side 1071 has a recurve point, and the image side 1072 has a recurve point.

[0359] A filter element 1080 is disposed between the seventh lens 1070 and the imaging surface 1090. It is made of glass and does not affect the focal length. An electronic image sensor 1095 is disposed on the imaging surface 1090.

[0360] Of the seven lenses in the imaging optical lens, the fifth lens, 1050, has the smallest effective radius. In addition, at least two of the seven lenses have Abbe numbers between 10.0 and 20.0 (the fourth lens, 1040, has an Abbe number V4 = 18.7, and the sixth lens, 1060, has an Abbe number V6 = 18.7).

[0361] The detailed optical data of the tenth embodiment are shown in Table 19, and its aspherical data are shown in Table 20.

[0362]

[0363]

[0364]

[0365] The equations for the aspherical curves in the tenth embodiment are expressed in the same form as in the first embodiment. Furthermore, the parameters of each relation are as explained in the third embodiment, except that the numerical values ​​of each relation are listed in the table below.

[0366]

[0367]

[0368] Eleventh Embodiment

[0369] Please refer to Figure 12 A perspective schematic diagram of an image-capturing device 10a according to the eleventh embodiment of the present invention is shown. Figure 12 As can be seen, in this embodiment, the image capturing device 10a is a camera module. The image capturing device 10c includes an imaging lens 11c, a driving device 12c, and an electronic photosensitive element 13c. The imaging lens 11c includes an imaging optical lens of the first embodiment of the present invention and a lens barrel (not otherwise labeled) supporting the imaging optical lens. The image capturing device 10c uses the imaging lens 11c to focus light to generate an image, and cooperates with the driving device 12c to focus the image, finally imaging it on the electronic photosensitive element 13c and outputting the image data.

[0370] The drive unit 12c can be an auto-focus module, and its driving method can utilize drive systems such as voice coil motors (VCMs), microelectromechanical systems (MEMS), piezoelectric systems, and shape memory alloys. The drive unit 12c allows the imaging lens 11c to achieve a better imaging position, providing better imaging of the subject 30 (see reference). Figure 13B It can capture clear images at different object distances.

[0371] The imaging device 10c can be equipped with an electronic image sensor 13c (such as CMOS or CCD) with high sensitivity and low noise, which is placed on the imaging surface of the imaging optical lens, so as to truly present the good imaging quality of the imaging optical lens.

[0372] Furthermore, the image capturing device 10c may include an image stabilization module 14c, which may be a kinetic energy sensing element such as an accelerometer, gyroscope, or Hall effect sensor. In the eleventh embodiment, the image stabilization module 14c is a gyroscope, but it is not limited thereto. By adjusting the changes in different axes of the image capturing optical lens to compensate for the blurry image caused by shaking during shooting, the image quality of shooting in dynamic and low-light scenes is further improved, and advanced image compensation functions such as optical image stabilization (OIS) and electronic image stabilization (EIS) are provided.

[0373] Twelfth Embodiment

[0374] Please refer to Figure 13A and Figure 13B ,in Figure 13A A perspective view of an electronic device 20 according to the twelfth embodiment of the present invention is shown. Figure 13B Draw Figure 13A A system diagram of the electronic device. In this embodiment, the electronic device 20 is a smartphone. The electronic device 20 includes, according to the eleventh embodiment, an image capturing device 10a, an image capturing device 10b, an image capturing device 10c, a flash module 21, a focus assist module 22, an image signal processor 23, a user interface 24, and an image software processor 25 (see reference). Figure 13BIn this embodiment, the electronic device 20 includes three image-capturing devices 10a, 10b, and 10c facing the same direction. Image-capturing device 10a is the main lens, image-capturing device 10b is the wide-angle lens, and image-capturing device 10c is the telephoto lens, but the invention is not limited thereto. For example, the three image-capturing devices may be image-capturing device 10a, image-capturing device 10b, or other combinations thereof. Furthermore, the electronic device 20 may include only one image-capturing device 10a, or it may include two or more image-capturing devices.

[0375] When the user uses the user interface 24 to photograph the subject 30 (please refer to...) Figure 13B The electronic device 20 uses at least one of the image capturing devices 10a, 10b, and 10c to capture images, activates the flash module 21 for supplemental lighting, and uses the subject distance information provided by the focus assist module 22 for fast focusing. Furthermore, the image signal processor 23 performs image optimization processing to further improve the image quality produced by the image capturing optical lens. The focus assist module 22 can employ an infrared or laser focus assist system to achieve fast focusing. The user interface 24 can use a touchscreen or a physical shooting button, combined with the diverse functions of the image software processor 25 for image capturing and processing.

[0376] The image capturing device 10c of the present invention is not limited to application in smartphones. The image capturing device 10c can also be applied to mobile focusing systems as needed, and features excellent aberration correction and good image quality. For example, the image capturing device 10c can be widely used in automotive electronics, drones, smart electronic products, tablet computers, wearable devices, medical devices, precision instruments, surveillance cameras, personal video recorders, recognition systems, multi-lens devices, motion sensing, virtual reality, motion devices, and home intelligent assistance systems, among other electronic devices.

[0377] Thirteenth Embodiment

[0378] Please refer to Figure 14A and Figure 14B ,in Figure 14A A rear view of an electronic device 1300 is shown. Figure 14B Draw Figure 14A A front view of the electronic device 1300. In this embodiment, the electronic device 1300 is a smartphone. The electronic device 1300 includes image capturing devices 1301, 1302, 1303, and 1304, and a display device 1305. Figure 14AAs shown, image capturing devices 1301, 1302, and 1303 face the same direction and are horizontally arranged on the upper edge of the back of the electronic device 1300. Image capturing device 1301 is a wide-angle lens, image capturing device 1303 is a telephoto lens, and the angle of view of image capturing device 1302 is between that of image capturing device 1301 and image capturing device 1303. Figure 14B As shown, the image capturing device 1304 is located above the display device 1305 of the electronic device 1300, and is an image capturing optical lens as described in the first embodiment of the present invention.

[0379] The aforementioned electronic device is merely an illustrative example of practical application of the present invention and is not intended to limit the scope of application of the imaging device of the present invention. Preferably, the electronic device may further include a control unit, a display unit, a storage unit, a temporary storage unit (RAM), or a combination thereof.

[0380] The tables above show different numerical variations of the imaging optical lens in the embodiments disclosed in this invention. However, the numerical variations in each embodiment of this invention are all obtained experimentally. Even if different values ​​are used, products with the same structure should still fall within the protection scope disclosed in this invention. Therefore, the descriptions and figures above are only illustrative and are not intended to limit the scope of the patent application disclosed in this invention.

Claims

1. An image-capturing optical lens, characterized in that, It includes seven lenses, which are, in order from the object side to the image side: a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens. Among them, the total number of lenses in the imaging optical lens is seven. Among the first lens to the seventh lens, each lens includes an object side surface facing the object side and an image side surface facing the image side. The object side surface of the first lens is convex near the optical axis. The second lens has a positive refractive power. The object side surface of the second lens is convex near the optical axis. The third lens has a negative refractive power. At least one lens surface of the seven lenses includes at least one inflection point. The distance on the optical axis between the object side surface of the first lens and an imaging surface is TL. The focal length of the imaging optical lens is f. The maximum image height of the imaging optical lens is ImgH. The minimum value among the Abbe numbers of the seven lenses is Vmin. The maximum value among the refractive indices of the seven lenses is Nmax. The following relationships are satisfied: 0.30 < TL / f < 1.25; 0.10 < ImgH / f < 0.47; 10.0 < Vmin ≤ 19.5; and 1.58 < Nmax < 1.

72.

2. The imaging optical lens as described in claim 1, characterized in that, The distance on the optical axis between the object side surface of the first lens and the imaging surface is TL. The focal length of the imaging optical lens is f. The maximum image height of the imaging optical lens is ImgH. The maximum value among the refractive indices of the seven lenses is Nmax. The following relationships are satisfied: 0.99 <= TL / f < 1.15; 0.38 <= ImgH / f < 0.47; and 1.688 <= Nmax < 1.

72.

3. The imaging optical lens as described in claim 1, characterized in that, The sixth lens has a positive refractive power. The seventh lens has a negative refractive power.

4. The imaging optical lens as described in claim 1, characterized in that, The distance on the optical axis between the object side surface of the first lens and the imaging surface is TL. The F-number of the imaging optical lens is Fno. The focal length of the imaging optical lens is f. The following relationship is satisfied: 0.10 < TL * Fno / f < 3.

0.

5. The imaging optical lens as described in claim 1, characterized in that, Among the seven lenses, at least two lenses have Abbe numbers between 10.0 and 20.

0.

6. The imaging optical lens as described in claim 1, characterized in that, The focal length of the imaging optical lens is f. The focal length of the first lens is f1. The focal length of the second lens is f2. The focal length of the third lens is f3. The focal length of the fourth lens is f4. The focal length of the fifth lens is f5. The focal length of the sixth lens is f6. The focal length of the seventh lens is f7. The minimum value of |f / f1|, |f / f2|, |f / f3|, |f / f4|, |f / f5|, |f / f6|, and |f / f7| is |f / fi|min. The following relationship is satisfied: |f / fi|min < 0.

10.

7. The imaging optical lens as described in claim 1, characterized in that, At least one lens surface of the sixth lens and the seventh lens includes at least one inflection point. The perpendicular distance between the at least one inflection point and the optical axis is Yp. The focal length of the imaging optical lens is f. The following relationship is satisfied: 0.01 < Yp / f < 1.

0.

8. The imaging optical lens as described in claim 1, characterized in that, The focal length of the imaging optical lens is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, and the focal length of the seventh lens is f7, satisfying the following relational expressions: 0.10 < (|f / f1| + |f / f3| + |f / f4| + |f / f5| + |f / f6| + |f / f7|) / |f / f2| < 3.

80.

9. The imaging optical lens as described in claim 1, characterized in that, The maximum value of the thickness of each lens among the seven lenses on the optical axis is CTmax, and the thickness of the second lens on the optical axis is CT2, satisfying the following relational expression: 1.0 ≤ CTmax / CT2 < 1.

20.

10. The imaging optical lens as described in claim 1, characterized in that, Among the seven lenses, the one with the smallest effective radius is the fourth lens or the fifth lens.

11. An image-capturing optical lens, characterized in that, It includes seven lenses, which are, in order from the object side to the image side: a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens; Among them, the total number of lenses in the imaging optical lens is seven. Among the first lens to the seventh lens, each lens includes an object side surface facing the object side and an image side surface facing the image side. The object side surface of the first lens is convex near the optical axis. The second lens has a positive refractive power. The object side surface of the second lens is convex near the optical axis. The third lens has a negative refractive power. The image side surface of the seventh lens is concave near the optical axis. At least one surface of at least one lens among the seven lenses includes at least one inflection point. The distance between the object side surface of the first lens and an imaging surface on the optical axis is TL. The focal length of the imaging optical lens is f. The maximum image height of the imaging optical lens is ImgH. The minimum value of the Abbe numbers of the seven lenses is Vmin, satisfying the following relational expressions: 0.30 < TL / f < 1.25; 0.10 < ImgH / f < 0.47; and 10.0 < Vmin ≤ 12. The imaging optical lens as described in claim 11, characterized in that, ​ ​ ​ ​ 13. The imaging optical lens as described in claim 11, characterized in that, ​ ​ 14. The imaging optical lens as described in claim 11, characterized in that, ​ ​ 15. The imaging optical lens as described in claim 11, characterized in that, ​ 16. The imaging optical lens as described in claim 11, characterized in that, The focal length of the imaging optical lens is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, and the focal length of the seventh lens is f7. The minimum value among |f / f1|, |f / f2|, |f / f3|, |f / f4|, |f / f5|, |f / f6|, and |f / f7| is |f / fi|min, which satisfies the following relationship: |f / fi|min<0.

10.

17. The imaging optical lens as described in claim 11, characterized in that, The image-capturing optical lens has a focal length of f, the first lens has a focal length of f1, the second lens has a focal length of f2, the third lens has a focal length of f3, the fourth lens has a focal length of f4, the fifth lens has a focal length of f5, the sixth lens has a focal length of f6, and the seventh lens has a focal length of f7, satisfying the following relationship: 1.00<=(|f / f1|+|f / f3|+|f / f4|+|f / f5|+|f / f6|+|f / f7|) / |f / f2|<=2.

71.

18. The imaging optical lens as described in claim 11, characterized in that, The maximum thickness of each of the seven lenses along the optical axis is CTmax, and the thickness of the second lens along the optical axis is CT2, satisfying the following relationship: 1.0≤CTmax / CT2<1.

20.

19. The imaging optical lens as described in claim 11, characterized in that, The lens with the smallest effective radius among the seven lenses is either the fourth lens or the fifth lens.

Images