Photographic optical lens set

Abstract

The present invention discloses a photographic optical lens set. The photographic optical lens set includes six lenses, which are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens in order from the object side to the image side. The first lens has a negative refractive power, and its object side surface is concave near the optical axis, and the object side surface of the first lens includes at least one convex critical point off the axis. The object side surface of the second lens is convex near the optical axis. The third lens has a positive refractive power. The fourth lens has a negative refractive power. The fifth lens has a positive refractive power, and its image side surface is convex near the optical axis. The sixth lens has a negative refractive power, and its image side surface is concave near the optical axis, and the image side surface of the sixth lens includes at least one convex surface off the axis. When specific conditions are met, it can help reduce the overall volume of the photographic optical lens set, achieve miniaturization of the photographic optical lens set, and obtain a more appropriate balance between chromatic aberration and astigmatism.

Description

[0001] This application is a divisional application of the patent application with the application date of September 26, 2018 (the divisional submission date is May 9, 2022), application number 201811123324.9 (divisional application number is 202210496817.7), and invention name “Photographic optical lens group, imaging device and electronic device”. Technical Field

[0002] The present invention relates to a photographic optical lens set, and more particularly to a miniaturized photographic optical lens set used in electronic devices. Background Art

[0003] As semiconductor manufacturing technology advances, the performance of electronic photosensitive components has increased, allowing pixels to be even smaller. Consequently, optical lenses with high imaging quality have become indispensable. With the rapid advancement of technology, the application range of electronic devices equipped with optical lenses has expanded, and the requirements for optical lenses have also become more diverse. Because optical lenses in the past have been difficult to strike a balance between image quality, sensitivity, aperture size, size, and viewing angle, an optical lens that meets these requirements has become a goal of the industry. Summary of the Invention

[0004] The present invention provides a photographic optical lens set that, through the configuration of the surface shape of the first lens, reduces the optical effective radius of the first lens, thereby helping to reduce the overall volume of the photographic optical lens set and achieve miniaturization of the photographic optical lens set. Furthermore, through the low Abbe number configuration of the second, fourth, and sixth lens elements, a more appropriate balance between chromatic aberration and astigmatism is achieved.

[0005] According to the present invention, a photographic optical lens group is provided, which includes six lenses. Sequentially from the object side to the image side, it includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens has a negative refractive power, the object-side surface thereof near the optical axis is concave, and at least one convex critical point is included at the off-axis part of the object-side surface of the first lens. The second lens has a positive refractive power, and the object-side surface thereof near the optical axis is convex. The third lens has a positive refractive power. The fourth lens has a negative refractive power, and the image-side surface thereof near the optical axis is concave. The fifth lens has a positive refractive power, and the image-side surface thereof near the optical axis is convex. The sixth lens has a negative refractive power, and the image-side surface thereof near the optical axis is concave, and at least one convex surface is included at the off-axis part of the image-side surface of the sixth lens. The total number of lenses in the photographic optical lens group is six. The Abbe number of the second lens is V2, the Abbe number of the fourth lens is V4, and the Abbe number of the sixth lens is V6. The radius of curvature of the object-side surface of the second lens is R3, the radius of curvature of the image-side surface of the second lens is R4, the radius of curvature of the object-side surface of the third lens is R5, the radius of curvature of the image-side surface of the third lens is R6. The f-number of the photographic optical lens group is Fno. The maximum optical effective radius of the object-side surface of the first lens is Y11, and the maximum optical effective radius of the image-side surface of the sixth lens is Y62, and they satisfy the following conditions:

[0006] 30 < V2 + V4 + V6 < 85;

[0007] |R3 / R4| ≤ 0.65;

[0008] 0.45 ≤ (R5 + R6) / (R5 - R6) < 2.0;

[0009] 1.20 < Fno < 2.45; and

[0010] 0.65 < Y11 / Y62 < 1.30.

[0011] According to the present invention, there is also provided a photographic optical lens group including six lenses, which sequentially include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens from the object side to the image side. The first lens has a negative refractive power, the surface on the object side near the optical axis is concave, and the off-axis part of the object-side surface of the first lens includes at least one convex critical point. The second lens has a positive refractive power, and the surface on the object side near the optical axis is convex. The third lens has a positive refractive power. The fourth lens has a negative refractive power, and the surface on the image side near the optical axis is concave. The fifth lens has a positive refractive power, and the surface on the image side near the optical axis is convex. The sixth lens has a negative refractive power, and the surface on the image side near the optical axis is concave, and the off-axis part of the image-side surface of the sixth lens includes at least one convex surface. The total number of lenses in the photographic optical lens group is six. The Abbe number of the second lens is V2, the Abbe number of the fourth lens is V4, and the Abbe number of the sixth lens is V6. The radius of curvature of the object-side surface of the third lens is R5, the radius of curvature of the image-side surface of the third lens is R6, the aperture value of the photographic optical lens group is Fno, the maximum optical effective radius of the object-side surface of the first lens is Y11, the maximum optical effective radius of the image-side surface of the sixth lens is Y62, the radius of curvature of the object-side surface of the second lens is R3, and the radius of curvature of the image-side surface of the second lens is R4, which satisfy the following conditions:

[0012] 30 < V2 + V4 + V6 < 85;

[0013] 0.45 ≤ (R5 + R6) / (R5 - R6) < 2.0;

[0014] 2.10 ≤ Fno < 2.45;

[0015] 0.50 < Y11 / Y62 ≤ 1.12; and

[0016] |R3 / R4| < 1.0.

[0017] When V2 + V4 + V6 satisfies the above conditions, a more appropriate balance can be obtained between chromatic aberration and astigmatism.

[0018] When |R3 / R4| satisfies the above conditions, the mechanism and optical matching between the first lens and the second lens can be more appropriate.

[0019] When (R5 + R6) / (R5 - R6) satisfies the above conditions, it helps the third lens correct aberrations to improve the imaging quality.

[0020] When Fno satisfies the above conditions, it can ensure sufficient light input to provide better imaging quality for applications such as night shooting.

[0021] When Y11 / Y62 satisfies the above conditions, the total length of the photographic optical lens group can be shortened, making it easier to miniaturize the photographic optical lens group. Brief Description of the Drawings

[0022] Figure 1 A schematic diagram illustrating an imaging device according to a first embodiment of the present invention is shown;

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

[0024] Figure 3 FIG2 is a schematic diagram illustrating an imaging device according to a second embodiment of the present invention;

[0025] Figure 4 From left to right are the spherical aberration, astigmatism and distortion curves of the second embodiment;

[0026] Figure 5 FIG2 is a schematic diagram illustrating an imaging device according to a third embodiment of the present invention;

[0027] Figure 6 From left to right are the spherical aberration, astigmatism and distortion curves of the third embodiment;

[0028] Figure 7 FIG2 is a schematic diagram illustrating an imaging device according to a fourth embodiment of the present invention;

[0029] Figure 8 From left to right are the spherical aberration, astigmatism and distortion curves of the fourth embodiment;

[0030] Figure 9 FIG2 is a schematic diagram illustrating an imaging device according to a fifth embodiment of the present invention;

[0031] Figure 10 From left to right are the spherical aberration, astigmatism and distortion curves of the fifth embodiment;

[0032] Figure 11 FIG2 is a schematic diagram illustrating an imaging device according to a sixth embodiment of the present invention;

[0033] Figure 12 From left to right are the spherical aberration, astigmatism and distortion curves of the sixth embodiment;

[0034] Figure 13 FIG2 is a schematic diagram illustrating an imaging device according to a seventh embodiment of the present invention;

[0035] Figure 14 From left to right are the spherical aberration, astigmatism and distortion curves of the seventh embodiment;

[0036] Figure 15A Drawing in accordance with Figure 1 A schematic diagram of Y11 in the photographic optical lens assembly of the first embodiment;

[0037] Figure 15B Drawing in accordance with Figure 1 A schematic diagram of Y62 in the photographic optical lens assembly of the first embodiment;

[0038] Figure 16 FIG2 is a perspective schematic diagram showing an imaging device according to an eighth embodiment of the present invention;

[0039] Figure 17A FIG1 is a schematic diagram illustrating one side of an electronic device according to a ninth embodiment of the present invention;

[0040] Figure 17B Drawing in accordance with Figure 17A A schematic diagram of the other side of the electronic device;

[0041] Figure 17C Drawing in accordance with Figure 17A System diagram of the electronic device;

[0042] Figure 18A A schematic diagram illustrating one side of an electronic device according to a tenth embodiment of the present invention;

[0043] Figure 18B Drawing in accordance with Figure 18A A schematic diagram of the other side of the electronic device; and

[0044] Figure 19 A schematic diagram of an electronic device according to an eleventh embodiment of the present invention is shown.

[0045]

Explanation of symbols

[0046] Imaging device: 10, 10a, 10b, 10c, 10d, 10e, 10f, 41

[0047] Imaging lens: 11

[0048] Drive unit group: 12

[0049] Electronic photosensitive elements: 13, 190, 290, 390, 490, 590, 690, 790

[0050] Image stabilization modules: 14

[0051] Electronic devices: 20, 30, 40

[0052] Flash modules: 21

[0053] Focus assist modules: 22

[0054] Image signal processor: 23

[0055] User interface: 24, 34

[0056] Image software processor: 25

[0057] Subjects: 26

[0058] Aperture: 100, 200, 300, 400, 500, 600, 700

[0059] First lens: 110, 210, 310, 410, 510, 610, 710

[0060] Object side surface: 111, 211, 311, 411, 511, 611, 711

[0061] Image side surface: 112, 212, 312, 412, 512, 612, 712

[0062] Second lens: 120, 220, 320, 420, 520, 620, 720

[0063] Object side surface: 121, 221, 321, 421, 521, 621, 721

[0064] Image side surface: 122, 222, 322, 422, 522, 622, 722

[0065] Third lens: 130, 230, 330, 430, 530, 630, 730

[0066] Object side surface: 131, 231, 331, 431, 531, 631, 731

[0067] Image side surface: 132, 232, 332, 432, 532, 632, 732

[0068] Fourth lens: 140, 240, 340, 440, 540, 640, 740

[0069] Object side surface: 141, 241, 341, 441, 541, 641, 741

[0070] Image side surface: 142, 242, 342, 442, 542, 642, 742

[0071] Fifth lens: 150, 250, 350, 450, 550, 650, 750

[0072] Object side surface: 151, 251, 351, 451, 551, 651, 751

[0073] Image side surface: 152, 252, 352, 452, 552, 652, 752

[0074] Sixth lens: 160, 260, 360, 460, 560, 660, 760

[0075] Object side surface: 161, 261, 361, 461, 561, 661, 761

[0076] Image side surface: 162, 262, 362, 462, 562, 662, 762 Infrared filter element: 170, 270, 370, 470, 570, 670, 770 Imaging surface: 180, 280, 380, 480, 580, 680, 780

[0077] Aperture: 301

[0078] f: focal length of photographic optical lens group

[0079] Fno: Aperture value of photographic optical lens group

[0080] HFOV: Half of the maximum angle of view in a photographic optical lens group

[0081] FOV: The maximum viewing angle in a photographic optical lens group

[0082] V32: The total number of lenses with an Abbe number less than 32 in the photographic optical lens group

[0083] V2: Abbe number of the second lens

[0084] V4: Abbe number of the fourth lens

[0085] V6: Abbe number of the sixth lens

[0086] N6: refractive index of the sixth lens

[0087] R1: The radius of curvature of the object side surface of the first lens

[0088] R2: The curvature radius of the image-side surface of the first lens

[0089] R3: The radius of curvature of the object side surface of the second lens

[0090] R4: The curvature radius of the image-side surface of the second lens

[0091] R5: The radius of curvature of the object side surface of the third lens

[0092] R6: Radius of curvature of the image-side surface of the third lens

[0093] ImgH: Maximum image height of photographic optical lens group

[0094] CT1: Thickness of the first lens on the optical axis

[0095] CT2: thickness of the second lens on the optical axis

[0096] CT3: Thickness of the third lens on the optical axis

[0097] CT4: Thickness of the fourth lens on the optical axis

[0098] CT5: Thickness of the fifth lens on the optical axis

[0099] CT6: Thickness of the sixth lens on the optical axis

[0100] TL: The distance from the object side surface of the first lens to the imaging plane on the optical axis

[0101] f1: focal length of the first lens

[0102] f2: focal length of the second lens

[0103] f3: focal length of the third lens

[0104] f4: focal length of the fourth lens

[0105] f5: focal length of the fifth lens

[0106] f6: focal length of the sixth lens

[0107] Y11: The maximum optical effective radius of the object side surface of the first lens

[0108] Y62: Maximum optical effective radius of the image-side surface of the sixth lens

[0109] EPD: Entrance pupil diameter of photographic optical lens group DETAILED DESCRIPTION

[0110] A photographic optical lens set comprises, from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, wherein the total number of lenses in the photographic optical lens set is six.

[0111] The first lens element has negative refractive power, and its object-side surface is concave near the optical axis. This reduces the first lens element's effective optical radius, thereby reducing the overall size of the photographic optical lens assembly. The off-axis portion of the first lens element's object-side surface may include at least one convex surface, allowing light from a wide angle to enter, thereby expanding the viewing angle of the photographic optical lens assembly. Furthermore, the off-axis portion of the first lens element's object-side surface may include at least one convex critical point. This off-axis critical point controls the direction of the peripheral light path, thereby improving peripheral light aberrations.

[0112] The third lens element may have positive refractive power, the fourth lens element may have negative refractive power, the fifth lens element may have positive refractive power, and the sixth lens element may have negative refractive power. This helps to evenly distribute the refractive power of each lens in the photographic optical lens group, which is beneficial to image correction, especially correction of peripheral images.

[0113] In addition, the object-side surface of the fifth lens near the optical axis is concave, and the image-side surface of the fifth lens near the optical axis is convex. Thus, the concave-convex crescent-shaped mirror surface can eliminate aberrations such as astigmatism.

[0114] In addition, the object-side surface of the sixth lens near the optical axis can be convex, the image-side surface of the sixth lens near the optical axis is concave, and at least one convex surface is included at its off-axis portion. Thus, the system aberration can be further corrected, and the concave image-side surface helps the principal point to move towards the object side, shortening the back focal length of the photographic optical lens group.

[0115] The radius of curvature of the object-side surface of the first lens is R1, and the radius of curvature of the image-side surface of the first lens is R2, which satisfy the following condition: (R1 + R2) / (R1 - R2) < 0.40. Thus, it is beneficial to slow down the curvature at the center of the object-side surface of the first lens, avoid the first lens being too convex and affecting the total length of the photographic optical lens group, and also helps to enhance manufacturability. Preferably, the following condition can be satisfied: -2.75 < (R1 + R2) / (R1 - R2) ≤ 0. More preferably, the following condition can be satisfied: -1.40 < (R1 + R2) / (R1 - R2) < -0.30.

[0116] The Abbe number of the second lens is V2, the Abbe number of the fourth lens is V4, and the Abbe number of the sixth lens is V6, which satisfy the following condition: 10 < V2 + V4 + V6 < 85. Thus, a more appropriate balance can be obtained between chromatic aberration and astigmatism. Preferably, the following condition can be satisfied: 30 < V2 + V4 + V6 < 75.

[0117] The total number of lenses with an Abbe number less than 32 in the photographic optical lens group is V32, which satisfies the following condition: 3 ≤ V32. Thus, the chromatic aberration and astigmatism of the system can be further balanced.

[0118] The radius of curvature of the object-side surface of the second lens is R3, and the radius of curvature of the image-side surface of the second lens is R4, which satisfy the following condition: |R3 / R4| < 2.0. Thus, the mechanism and optical matching between the first lens and the second lens can be more appropriate. Preferably, the following condition can be satisfied: |R3 / R4| < 1.0.

[0119] The focal length of the first lens is f1, and the focal length of the sixth lens is f6, which satisfy the following condition: 0.50 < f1 / f6 < 4.0. Thus, the rear lens of the photographic optical lens group can have an appropriate refractive power, which helps to shorten the back focal length and enhance peripheral image correction, further realizing the miniaturization of the photographic optical lens group.

[0120] 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, and the focal length of the sixth lens is f6. Thus, with the configuration where the refractive power of the second lens is relatively weak, the third, fourth, fifth, and sixth lenses with stronger refractive power can further enhance the correction of the peripheral image. Preferably, the following conditions can be satisfied: 1.0 < |f2 / f1|; 1.0 < |f2 / f3|; 1.0 < |f2 / f4|; 1.0 < |f2 / f5|; 1.0 < |f2 / f6|; and -0.60 < f1 / f2, so as to control the refractive power configuration of the object-side end lens.

[0121] The maximum optical effective radius of the object-side surface of the first lens is Y11, and the maximum optical effective radius of the image-side surface of the sixth lens is Y62, which satisfy the following conditions: 0.50 < Y11 / Y62 < 1.50. Thus, the total length of the photographic optical lens group can be shortened, making it easier to miniaturize the photographic optical lens group. Preferably, the following conditions can be satisfied: 0.65 < Y11 / Y62 < 1.30.

[0122] The absolute value of the radius of curvature of the image-side surface of the sixth lens is the smallest among the absolute values of the radii of curvature of all lens surfaces in the photographic optical lens group. Thus, it helps to further shorten the back focal length of the photographic optical lens group and enhance the miniaturization feature of the photographic optical lens group of the present invention.

[0123] The radius of curvature of the object-side surface of the third lens is R5, and the radius of curvature of the image-side surface of the third lens is R6, which satisfy the following conditions: 0 < (R5 + R6) / (R5 - R6) < 2.0. Thus, it helps the third lens to correct aberrations and improve the imaging quality.

[0124] The maximum optical effective radius of the object-side surface of the first lens is Y11, and the entrance pupil diameter of the photographic optical lens group is EPD, which satisfy the following conditions: 2.0 < Y11 / EPD < 7.0. Thus, it helps to achieve a more appropriate balance between the miniaturization of the photographic optical lens group and the configuration of a large aperture.

[0125] The aperture value of the photographic optical lens group is Fno, which satisfy the following conditions: 1.0 < Fno < 3.0. Thus, it can ensure sufficient light input to provide better imaging quality for applications such as night shooting. Preferably, the following conditions can be satisfied: 1.20 < Fno < 2.45.

[0126] The maximum viewing angle in the photographic optical lens group is FOV, which satisfy the following conditions: 120 degrees < FOV. Thus, it can provide a more appropriate large viewing angle feature for the photographic optical lens group.

[0127] The distance from the object side surface of the first lens to the imaging surface on the optical axis is TL, and the maximum image height of the photographic optical lens group is ImgH, which satisfies the following conditions: 1.0 < TL / ImgH < 2.2. Thereby, the total length of the photographic optical lens group can be shortened, and the photographic optical lens group can be further miniaturized. Preferably, the following conditions can be satisfied: 1.2 < TL / ImgH < 2.0.

[0128] The thickness of the first lens on the optical axis is CT1, the thickness of the second lens on the optical axis is CT2, the thickness of the third lens on the optical axis is CT3, the thickness of the fourth lens on the optical axis is CT4, the thickness of the fifth lens on the optical axis is CT5, and the thickness of the sixth lens on the optical axis is CT6, which satisfies the following conditions: CT4 / CT1 < 1.0; CT4 / CT2 < 1.0; CT4 / CT3 < 1.0; CT4 / CT5 < 1.0; and CT4 / CT6 < 1.0. Thereby, with the configuration of the third lens and the fifth lens with relatively strong positive refractive power, the aberration correction ability of the fourth lens can be enhanced.

[0129] The radius of curvature of the object side surface of the first lens is R1, and the maximum image height of the photographic optical lens group is ImgH, which satisfies the following conditions: -3.0 < R1 / ImgH < 0. Thereby, the first lens can guide light rays with a large viewing angle to enter, which helps to expand the viewing angle of the photographic optical lens group. Preferably, the following conditions can be satisfied: -1.5 < R1 / ImgH < 0.

[0130] The Abbe number of the sixth lens is V6, and the refractive index of the sixth lens is N6, which satisfies the following conditions: 5 < V6 / N6 < 30. Thereby, a more appropriate balance can be obtained between chromatic aberration and astigmatism.

[0131] Each of the technical features in the above-mentioned photographic optical lens group of the present invention can be combined and configured to achieve the corresponding effects.

[0132] In the photographic optical lens group provided by 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 the refractive power configuration of the photographic optical lens group 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 provided on the lens surface, thereby obtaining more control variables to reduce aberrations, reduce the number of lenses, and effectively reduce the total length of the photographic optical lens group of the present invention, and the aspherical surface can be made by methods such as plastic injection molding or molding of glass lenses.

[0133] In the photographic optical lens assembly provided by this invention, additives can be selectively added to any one (or more) of the lens materials to modify the lens' transmittance for specific wavelengths, thereby reducing stray light and color shift. For example, the additive can filter out light in the 600nm to 800nm ​​band, thereby reducing excess red or infrared light; or it can filter out light in the 350nm to 450nm band, thereby reducing blue or ultraviolet light. Thus, the additive can prevent interference from specific wavelengths on imaging. Furthermore, the additive can be uniformly mixed into a plastic and then fabricated into a lens using injection molding technology.

[0134] In the photographic optical lens set provided by the present invention, if the lens surface is aspherical, it means that the entire optically effective area of ​​the lens surface or a portion thereof is aspherical.

[0135] Furthermore, in the photographic optical lens set provided by the present invention, if a lens surface is convex and the position of the convex surface is undefined, it means that the lens surface may be convex at the near optical axis; if a lens surface is concave and the position of the concave surface is undefined, it means that the lens surface may be concave at the near optical axis. In the photographic optical lens set provided by the present invention, if a lens has positive or negative refractive power, or a focal length of the lens, it may refer to the refractive power or focal length of the lens at the near optical axis.

[0136] The imaging surface of the photographic optical lens set of the present invention can be a plane or a curved surface with any curvature, depending on the corresponding electronic photosensitive element, and in particular refers to a curved surface with a concave surface facing the object side. In addition, one or more imaging correction elements (such as flattening elements) can be optionally arranged between the lens closest to the imaging surface and the imaging surface in the photographic optical lens set of the present invention to achieve the effect of correcting the image (such as image curvature). The optical properties of the imaging correction element, such as curvature, thickness, refractive index, position, and surface shape (convex or concave, spherical or aspherical, diffractive surface, Fresnel surface, etc.), can be adjusted to meet the requirements of the imaging device. Generally speaking, the preferred imaging correction element configuration is to place a thin plano-concave element with a concave surface facing the object side near the imaging surface.

[0137] In addition, the photographic optical lens assembly of the present invention may be provided with at least one stop, such as an aperture stop, a glare stop, or a field stop, as required, to help reduce stray light and improve image quality.

[0138] In the photographic optical lens assembly of the present invention, the aperture configuration can be either a front aperture or a center aperture. A front aperture means the aperture is positioned between the subject and the first lens element, while a center aperture means the aperture is positioned between the first lens element and the imaging plane. A front aperture creates a longer distance between the exit pupil and the imaging plane, creating a telecentric effect and increasing the efficiency of the CCD or CMOS image sensor receiving images. A center aperture helps expand the field of view of the photographic optical lens assembly, giving it the advantages of a wide-angle lens.

[0139] The present invention may appropriately include a variable aperture element. This variable aperture element can be a mechanical component or a light-controlling element that controls the size and shape of the aperture electrically or using electrical signals. The mechanical component may include movable parts such as blades or shielding plates; the light-controlling element may include shielding materials such as filters, electrochromic materials, and liquid crystal layers. This variable aperture element can enhance image adjustment capabilities by controlling the amount of light entering the image or the exposure time. Furthermore, the variable aperture element can also be the aperture of the present invention, which can adjust image quality, such as depth of field or exposure speed, by varying the F-number.

[0140] The photographic optical lens assembly of the present invention can also be widely used in electronic devices such as three-dimensional (3D) image capture, digital cameras, mobile products, digital tablets, smart TVs, network monitoring equipment, somatosensory game consoles, driving recorders, reversing imaging devices, wearable products, and drones.

[0141] The present invention provides an imaging device comprising the aforementioned photographic optical lens assembly and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an imaging surface of the photographic optical lens assembly. By modifying the surface configuration of the first lens in the photographic optical lens assembly to reduce the optical effective radius of the first lens, the overall volume of the photographic optical lens assembly can be reduced, thereby achieving miniaturization of the photographic optical lens assembly. Preferably, the imaging device further comprises a barrel member, a holder member, or a combination thereof.

[0142] The present invention provides an electronic device comprising the aforementioned imaging device. The imaging device comprises a photographic optical lens assembly and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the photographic optical lens assembly. Preferably, the electronic device further comprises a control unit, a display unit, a storage unit, a random access memory (RAM), or a combination thereof.

[0143] Based on the above implementation manner, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0144] <First embodiment>

[0145] Please refer to Figure 1 and Figure 2 ,in Figure 1 FIG. 1 is a schematic diagram illustrating an imaging device according to a first embodiment of the present invention. Figure 2 From left to right are the spherical aberration, astigmatism and distortion curves of the first embodiment. Figure 1 As can be seen, the imaging device of the first embodiment includes a photographic optical lens assembly (not separately numbered) and an electronic photosensitive element 190. The photographic optical lens assembly includes, from the object side to the image side, a first lens 110, a second lens 120, an aperture 100, a third lens 130, a fourth lens 140, a fifth lens 150, a sixth lens 160, an infrared cutoff filter 170, and an imaging surface 180. The electronic photosensitive element 190 is disposed on the imaging surface 180 of the photographic optical lens assembly. The photographic optical lens assembly includes six lenses (110, 120, 130, 140, 150, 160), with no other lenses interposed between the six lenses.

[0146] The first lens element 110 has negative refractive power and is made of plastic. Its object-side surface 111 is concave near the optical axis, and its image-side surface 112 is also concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface 111 of the first lens element includes at least one convex surface off-axis and at least one convex critical point.

[0147] The second lens 120 has negative refractive power and is made of plastic. Its object-side surface 121 is convex near the optical axis, and its image-side surface 122 is concave near the optical axis. Both surfaces are aspherical.

[0148] The third lens 130 has positive refractive power and is made of plastic. Its object-side surface 131 is convex near the optical axis, and its image-side surface 132 is convex near the optical axis. Both surfaces are aspherical.

[0149] The fourth lens 140 has negative refractive power and is made of plastic. Its object-side surface 141 is convex near the optical axis, and its image-side surface 142 is concave near the optical axis. Both surfaces are aspherical.

[0150] The fifth lens element 150 has positive refractive power and is made of plastic. Its object-side surface 151 is concave near the optical axis, and its image-side surface 152 is convex near the optical axis. Both surfaces are aspherical.

[0151] The sixth lens element 160 has negative refractive power and is made of plastic. Its object-side surface 161 is convex near the optical axis, and its image-side surface 162 is concave near the optical axis. Both are aspherical. Furthermore, the image-side surface 162 of the sixth lens element includes at least one convex surface off-axis.

[0152] The infrared cut filter element 170 is made of glass and is disposed between the sixth lens 160 and the imaging plane 180 without affecting the focal length of the photographic optical lens assembly.

[0153] The curve equations of the aspheric surfaces of the above lenses are expressed as follows:

[0154]

[0155] in:

[0156] X: The relative distance between the point on the aspheric surface that is Y away from the optical axis and the tangent plane that intersects the optical axis of the aspheric surface;

[0157] Y: The vertical distance between the point on the aspheric curve and the optical axis;

[0158] R: radius of curvature;

[0159] k: cone coefficient; and

[0160] Ai: i-th order aspheric coefficient.

[0161] In the photographic optical lens group of the first embodiment, the focal length of the photographic optical lens group is f, the aperture value (f-number) of the photographic optical lens group is Fno, and half of the maximum viewing angle in the photographic optical lens group is HFOV, whose values ​​are as follows: f=1.84mm; Fno=2.65; and HFOV=70.0 degrees.

[0162] In the photographic optical lens assembly of the first embodiment, the maximum viewing angle of the photographic optical lens assembly is FOV, which satisfies the following condition: FOV=140.0 degrees.

[0163] In the photographic optical lens set of the first embodiment, the total number of lenses with an Abbe number less than 32 in the photographic optical lens set is V32, which satisfies the following condition: V32=3.

[0164] In the photographic optical lens assembly of the first embodiment, the Abbe number of the second lens 120 is V2, the Abbe number of the fourth lens 140 is V4, the Abbe number of the sixth lens 160 is V6, and the refractive index of the sixth lens 160 is N6, which satisfies the following conditions: V2+V4+V6=61.3; and V6 / N6=14.34.

[0165] In the photographic optical lens assembly of the first embodiment, the curvature radius of the object-side surface 111 of the first lens is R1, and the curvature radius of the image-side surface 112 of the first lens is R2, which satisfy the following condition: (R1+R2) / (R1-R2)=-0.34.

[0166] In the photographic optical lens assembly of the first embodiment, the curvature radius of the second lens object-side surface 121 is R3, and the curvature radius of the second lens image-side surface 122 is R4, which satisfy the following condition: |R3 / R4|=1.15.

[0167] In the photographic optical lens assembly of the first embodiment, the curvature radius of the object-side surface 131 of the third lens is R5, and the curvature radius of the image-side surface 132 of the third lens is R6, which satisfy the following condition: (R5+R6) / (R5-R6)=0.50.

[0168] In the photographic optical lens assembly of the first embodiment, the curvature radius of the object-side surface 111 of the first lens is R1, and the maximum image height of the photographic optical lens assembly is ImgH, which satisfies the following condition: R1 / ImgH=-1.21.

[0169] In the photographic optical lens assembly of the first embodiment, the thickness of the first lens 110 on the optical axis is CT1, the thickness of the second lens 120 on the optical axis is CT2, the thickness of the third lens 130 on the optical axis is CT3, the thickness of the fourth lens 140 on the optical axis is CT4, the thickness of the fifth lens 150 on the optical axis is CT5, and the thickness of the sixth lens 160 on the optical axis is CT6, which satisfy the following conditions: CT4 / CT1=0.23; CT4 / CT2=0.50; CT4 / CT3=0.36; CT4 / CT5=0.31; and CT4 / CT6=0.75.

[0170] In the photographic optical lens assembly of the first embodiment, the distance from the object-side surface 111 of the first lens to the imaging plane 180 on the optical axis is TL, and the maximum image height of the photographic optical lens assembly is ImgH, which satisfies the following condition: TL / ImgH=1.98.

[0171] In the photographic optical lens assembly of the first embodiment, 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, and the focal length of the sixth lens 160 is f6, which satisfy the following conditions: f1 / f2=0.07; f1 / f6=2.04; |f2 / f1|=14.36; |f2 / f3|=38.70; |f2 / f4|=9.38; |f2 / f5|=32.63; and |f2 / f6|=29.35.

[0172] Coordinate Reference Figure 15A and Figure 15B ,in Figure 15A Drawing in accordance with Figure 1 A schematic diagram of the parameter Y11 in the photographic optical lens assembly of the first embodiment, Figure 15B Drawing in accordance with Figure 1Schematic diagram of parameter Y62 in the photographic optical lens set of the first embodiment. Figure 15A and Figure 15B It can be seen that in the photographic optical lens group of the first embodiment, the maximum optical effective radius of the object-side surface 111 of the first lens is Y11, the maximum optical effective radius of the image-side surface 162 of the sixth lens is Y62, and the entrance pupil diameter of the photographic optical lens group is EPD, which satisfies the following conditions: Y11 / Y62=0.99; and Y11 / EPD=3.49.

[0173] Please refer to Table 1 and Table 2 below.

[0174]

[0175]

[0176]

[0177] Table 1 Figure 1 Detailed structural data for the first embodiment is provided, with the units of curvature radius, thickness, and focal length in mm. Surfaces 0-16 represent the surfaces from the object side to the image side, respectively. Table 2 presents the aspheric surface data for the first embodiment, where k represents the conic coefficient in the aspheric curve equation, and A4-A16 represent the 4th-16th order aspheric coefficients for each surface. Furthermore, the tables below provide corresponding schematic diagrams and aberration curves for each embodiment. The definitions of the data in these tables are the same as those in Tables 1 and 2 of the first embodiment and are not further elaborated here.

[0178] <Second embodiment>

[0179] Please refer to Figure 3 and Figure 4 ,in Figure 3 FIG2 is a schematic diagram showing an imaging device according to a second embodiment of the present invention. Figure 4 From left to right are the spherical aberration, astigmatism and distortion curves of the second embodiment. Figure 3 As can be seen, the imaging device of the second embodiment includes a photographic optical lens assembly (not separately labeled) and an electronic photosensitive element 290. The photographic optical lens assembly includes, from the object side to the image side, a first lens 210, a second lens 220, an aperture 200, a third lens 230, a fourth lens 240, a fifth lens 250, a sixth lens 260, an infrared cutoff filter 270, and an imaging surface 280. The electronic photosensitive element 290 is disposed on the imaging surface 280 of the photographic optical lens assembly. The photographic optical lens assembly includes six lenses (210, 220, 230, 240, 250, 260), with no other lenses interposed between the six lenses.

[0180] The first lens element 210 has negative refractive power and is made of plastic. Its object-side surface 211 is concave near the optical axis, and its image-side surface 212 is convex near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface 211 of the first lens element includes at least one convex surface and at least one convex critical point off-axis.

[0181] The second lens 220 has positive refractive power and is made of plastic. Its object-side surface 221 is convex near the optical axis, and its image-side surface 222 is concave near the optical axis. Both surfaces are aspherical.

[0182] The third lens 230 has positive refractive power and is made of plastic. Its object-side surface 231 is convex near the optical axis, and its image-side surface 232 is convex near the optical axis. Both surfaces are aspherical.

[0183] The fourth lens element 240 has negative refractive power and is made of plastic. Its object-side surface 241 is convex near the optical axis, and its image-side surface 242 is concave near the optical axis. Both surfaces are aspherical.

[0184] The fifth lens element 250 has positive refractive power and is made of plastic. Its object-side surface 251 is concave near the optical axis, and its image-side surface 252 is convex near the optical axis. Both surfaces are aspherical.

[0185] The sixth lens element 260 has negative refractive power and is made of plastic. Its object-side surface 261 is convex near the optical axis, and its image-side surface 262 is concave near the optical axis. Both are aspherical. Furthermore, the image-side surface 262 of the sixth lens element includes at least one convex surface off-axis.

[0186] The infrared cut filter element 270 is made of glass and is disposed between the sixth lens 260 and the imaging surface 280 without affecting the focal length of the photographic optical lens assembly.

[0187] Please refer to Table 3 and Table 4 below.

[0188]

[0189]

[0190] In the second embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0191] The following data can be calculated by combining Table 3 and Table 4:

[0192]

[0193] <Third embodiment>

[0194] Please refer to Figure 5 and Figure 6,in Figure 5 FIG. 1 is a schematic diagram illustrating an imaging device according to a third embodiment of the present invention. Figure 6 From left to right are the spherical aberration, astigmatism and distortion curves of the third embodiment. Figure 5 As can be seen, the imaging device of the third embodiment includes a photographic optical lens assembly (not separately labeled) and an electronic photosensitive element 390. The photographic optical lens assembly includes, from the object side to the image side, a first lens 310, a second lens 320, an aperture 300, a third lens 330, a stop 301, a fourth lens 340, a fifth lens 350, a sixth lens 360, an infrared cutoff filter 370, and an imaging surface 380. The electronic photosensitive element 390 is disposed on the imaging surface 380 of the photographic optical lens assembly. The photographic optical lens assembly includes six lenses (310, 320, 330, 340, 350, 360), with no other lenses interposed between the six lenses.

[0195] The first lens element 310 has negative refractive power and is made of plastic. Its object-side surface 311 is concave near the optical axis, and its image-side surface 312 is also concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface 311 of the first lens element includes at least one convex surface off-axis and at least one convex critical point.

[0196] The second lens 320 has positive refractive power and is made of plastic. Its object-side surface 321 is convex near the optical axis, and its image-side surface 322 is concave near the optical axis. Both surfaces are aspherical.

[0197] The third lens 330 has positive refractive power and is made of plastic. Its object-side surface 331 is convex near the optical axis, and its image-side surface 332 is convex near the optical axis. Both are aspherical.

[0198] The fourth lens element 340 has negative refractive power and is made of plastic. Its object-side surface 341 is concave near the optical axis, and its image-side surface 342 is concave near the optical axis. Both surfaces are aspherical.

[0199] The fifth lens element 350 has positive refractive power and is made of plastic. Its object-side surface 351 is concave near the optical axis, and its image-side surface 352 is convex near the optical axis. Both surfaces are aspherical.

[0200] The sixth lens element 360 has negative refractive power and is made of plastic. Its object-side surface 361 is convex near the optical axis, and its image-side surface 362 is concave near the optical axis. Both are aspherical. Furthermore, the image-side surface 362 of the sixth lens element includes at least one convex surface off-axis.

[0201] The infrared cut filter element 370 is made of glass and is disposed between the sixth lens 360 and the imaging surface 380 without affecting the focal length of the photographic optical lens assembly.

[0202] Please refer to Table 5 and Table 6 below.

[0203]

[0204]

[0205]

[0206] In the third embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0207] The following data can be calculated by combining Table 5 and Table 6:

[0208]

[0209] <Fourth embodiment>

[0210] Please refer to Figure 7 and Figure 8 ,in Figure 7 FIG. 1 is a schematic diagram illustrating an imaging device according to a fourth embodiment of the present invention. Figure 8 From left to right are the spherical aberration, astigmatism and distortion curves of the fourth embodiment. Figure 7 As can be seen, the imaging device of the fourth embodiment includes a photographic optical lens assembly (not separately labeled) and an electronic photosensitive element 490. The photographic optical lens assembly includes, from the object side to the image side, a first lens 410, a second lens 420, an aperture 400, a third lens 430, a fourth lens 440, a fifth lens 450, a sixth lens 460, an infrared cutoff filter 470, and an imaging surface 480. The electronic photosensitive element 490 is disposed on the imaging surface 480 of the photographic optical lens assembly. The photographic optical lens assembly includes six lenses (410, 420, 430, 440, 450, 460), with no other lenses interposed between the six lenses.

[0211] The first lens element 410 has negative refractive power and is made of plastic. Its object-side surface 411 is concave near the optical axis, and its image-side surface 412 is also concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface 411 of the first lens element includes at least one convex surface off-axis and at least one convex critical point.

[0212] The second lens 420 has positive refractive power and is made of plastic. Its object-side surface 421 is convex near the optical axis, and its image-side surface 422 is concave near the optical axis. Both surfaces are aspherical.

[0213] The third lens 430 has positive refractive power and is made of plastic. Its object-side surface 431 is convex near the optical axis, and its image-side surface 432 is convex near the optical axis. Both are aspherical.

[0214] The fourth lens element 440 has negative refractive power and is made of plastic. Its object-side surface 441 is convex near the optical axis, and its image-side surface 442 is concave near the optical axis. Both surfaces are aspherical.

[0215] The fifth lens element 450 has positive refractive power and is made of plastic. Its object-side surface 451 is concave near the optical axis, and its image-side surface 452 is convex near the optical axis. Both surfaces are aspherical.

[0216] The sixth lens element 460 has negative refractive power and is made of plastic. Its object-side surface 461 is convex near the optical axis, and its image-side surface 462 is concave near the optical axis. Both are aspherical. Furthermore, the image-side surface 462 of the sixth lens element includes at least one convex surface off-axis.

[0217] The infrared cut filter element 470 is made of glass and is disposed between the sixth lens 460 and the imaging surface 480 without affecting the focal length of the photographic optical lens assembly.

[0218] Please refer to Table 7 and Table 8 below.

[0219]

[0220]

[0221]

[0222] In the fourth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0223] The following data can be calculated by combining Table 7 and Table 8:

[0224]

[0225] <Fifth embodiment>

[0226] Please refer to Figure 9 and Figure 10 ,in Figure 9 FIG2 is a schematic diagram showing an imaging device according to a fifth embodiment of the present invention. Figure 10 From left to right are the spherical aberration, astigmatism and distortion curves of the fifth embodiment. Figure 9As can be seen, the imaging device of the fifth embodiment includes a photographic optical lens assembly (not otherwise numbered) and an electronic photosensitive element 590. The photographic optical lens assembly includes, from the object side to the image side, a first lens 510, a second lens 520, an aperture 500, a third lens 530, a fourth lens 540, a fifth lens 550, a sixth lens 560, an infrared cutoff filter 570, and an imaging surface 580. The electronic photosensitive element 590 is disposed on the imaging surface 580 of the photographic optical lens assembly. The photographic optical lens assembly includes six lenses (510, 520, 530, 540, 550, 560), with no other lenses interposed between the six lenses.

[0227] The first lens element 510 has negative refractive power and is made of plastic. Its object-side surface 511 is concave near the optical axis, and its image-side surface 512 is also concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface 511 of the first lens element includes at least one convex surface off-axis and at least one convex critical point.

[0228] The second lens 520 has positive refractive power and is made of plastic. Its object-side surface 521 is convex near the optical axis, and its image-side surface 522 is concave near the optical axis. Both surfaces are aspherical.

[0229] The third lens 530 has positive refractive power and is made of plastic. Its object-side surface 531 is convex near the optical axis, and its image-side surface 532 is convex near the optical axis. Both are aspherical.

[0230] The fourth lens element 540 has negative refractive power and is made of plastic. Its object-side surface 541 is convex near the optical axis, and its image-side surface 542 is concave near the optical axis. Both surfaces are aspherical.

[0231] The fifth lens element 550 has positive refractive power and is made of plastic. Its object-side surface 551 is concave near the optical axis, and its image-side surface 552 is convex near the optical axis. Both surfaces are aspherical.

[0232] The sixth lens element 560 has negative refractive power and is made of plastic. Its object-side surface 561 is convex near the optical axis, and its image-side surface 562 is concave near the optical axis. Both are aspherical. Furthermore, the image-side surface 562 of the sixth lens element includes at least one convex surface off-axis.

[0233] The infrared cut filter element 570 is made of glass and is disposed between the sixth lens 560 and the imaging surface 580 without affecting the focal length of the photographic optical lens assembly.

[0234] Please refer to Table 9 and Table 10 below.

[0235]

[0236]

[0237]

[0238] In the fifth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment and are not repeated here.

[0239] The following data can be derived from Tables 9 and 10:

[0240]

[0241]

[0242] <Sixth embodiment>

[0243] Please refer to Figure 11 and Figure 12 ,in Figure 11 FIG. 1 is a schematic diagram illustrating an imaging device according to a sixth embodiment of the present invention. Figure 12 From left to right are the spherical aberration, astigmatism and distortion curves of the sixth embodiment. Figure 11 As can be seen, the imaging device of the sixth embodiment includes a photographic optical lens assembly (not separately labeled) and an electronic photosensitive element 690. The photographic optical lens assembly 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, a sixth lens 660, an infrared cutoff filter 670, and an imaging surface 680. The electronic photosensitive element 690 is disposed on the imaging surface 680 of the photographic optical lens assembly. The photographic optical lens assembly includes six lenses (610, 620, 630, 640, 650, 660), with no other lenses interposed between the six lenses.

[0244] The first lens element 610 has negative refractive power and is made of plastic. Its object-side surface 611 is concave near the optical axis, and its image-side surface 612 is also concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface 611 of the first lens element includes at least one convex surface off-axis and at least one convex critical point.

[0245] The second lens 620 has positive refractive power and is made of plastic. Its object-side surface 621 is convex near the optical axis, and its image-side surface 622 is concave near the optical axis. Both surfaces are aspherical.

[0246] The third lens 630 has positive refractive power and is made of plastic. Its object-side surface 631 is convex near the optical axis, and its image-side surface 632 is convex near the optical axis. Both surfaces are aspherical.

[0247] The fourth lens element 640 has negative refractive power and is made of plastic. Its object-side surface 641 is convex near the optical axis, and its image-side surface 642 is concave near the optical axis. Both surfaces are aspherical.

[0248] The fifth lens element 650 has positive refractive power and is made of plastic. Its object-side surface 651 is concave near the optical axis, and its image-side surface 652 is convex near the optical axis. Both surfaces are aspherical.

[0249] The sixth lens element 660 has negative refractive power and is made of plastic. Its object-side surface 661 is convex near the optical axis, and its image-side surface 662 is concave near the optical axis. Both are aspherical. In addition, the image-side surface 662 of the sixth lens element includes at least one convex surface off-axis.

[0250] The infrared cut filter element 670 is made of glass and is disposed between the sixth lens 660 and the imaging surface 680 without affecting the focal length of the photographic optical lens assembly.

[0251] Please refer to Table 11 and Table 12 below.

[0252]

[0253]

[0254]

[0255] In the sixth embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as in the first embodiment and are not repeated here.

[0256] The following data can be calculated by combining Table 11 and Table 12:

[0257]

[0258] <Seventh embodiment>

[0259] Please refer to Figure 13 and Figure 14 ,in Figure 13 FIG2 is a schematic diagram showing an imaging device according to a seventh embodiment of the present invention. Figure 14 From left to right are the spherical aberration, astigmatism and distortion curves of the seventh embodiment. Figure 13As can be seen, the imaging device of the seventh embodiment includes a photographic optical lens assembly (not separately labeled) and an electronic photosensitive element 790. The photographic optical lens assembly 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, a sixth lens 760, an infrared cutoff filter 770, and an imaging surface 780. The electronic photosensitive element 790 is disposed on the imaging surface 780 of the photographic optical lens assembly. The photographic optical lens assembly includes six lenses (710, 720, 730, 740, 750, 760), with no other lenses interposed between the six lenses.

[0260] The first lens element 710 has negative refractive power and is made of plastic. Its object-side surface 711 is concave near the optical axis, and its image-side surface 712 is also concave near the optical axis. Both surfaces are aspherical. Furthermore, the object-side surface 711 of the first lens element includes at least one convex surface off-axis and at least one convex critical point.

[0261] The second lens 720 has positive refractive power and is made of plastic. Its object-side surface 721 is convex near the optical axis, and its image-side surface 722 is convex near the optical axis. Both are aspherical.

[0262] The third lens 730 has positive refractive power and is made of plastic. Its object-side surface 731 is concave near the optical axis, and its image-side surface 732 is convex near the optical axis. Both are aspherical.

[0263] The fourth lens element 740 has negative refractive power and is made of plastic. Its object-side surface 741 is convex near the optical axis, and its image-side surface 742 is concave near the optical axis. Both surfaces are aspherical.

[0264] The fifth lens element 750 has positive refractive power and is made of plastic. Its object-side surface 751 is concave near the optical axis, and its image-side surface 752 is convex near the optical axis. Both surfaces are aspherical.

[0265] The sixth lens element 760 has negative refractive power and is made of plastic. Its object-side surface 761 is convex near the optical axis, and its image-side surface 762 is concave near the optical axis. Both are aspherical. Furthermore, the image-side surface 762 of the sixth lens element includes at least one convex surface off-axis.

[0266] The infrared cut filter element 770 is made of glass and is disposed between the sixth lens 760 and the imaging surface 780 without affecting the focal length of the photographic optical lens assembly.

[0267] Please refer to Table 13 and Table 14 below.

[0268]

[0269]

[0270]

[0271] In the seventh embodiment, the curve equation of the aspheric surface is expressed in the same form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as in the first embodiment and are not repeated here.

[0272] The following data can be calculated by combining Table 13 and Table 14:

[0273]

[0274]

[0275] <Eighth Embodiment>

[0276] Please refer to Figure 16 , which illustrates a three-dimensional schematic diagram of an imaging device 10 according to an eighth embodiment of the present invention. Figure 16 As can be seen, the imaging device 10 of the eighth embodiment is a camera module. The imaging device 10 includes an imaging lens 11, a drive assembly 12, and an electronic photosensitive element 13. The imaging lens 11 includes the photographic optical lens assembly of the first embodiment of the present invention and a lens barrel (not separately labeled) that supports the photographic optical lens assembly. The imaging device 10 uses the imaging lens 11 to focus light and capture an image of a subject, and cooperates with the drive assembly 12 to focus the image. Finally, the image is formed on the electronic photosensitive element 13 and the image data is output.

[0277] The drive assembly 12 can be an auto-focus module, and its driving method can be a voice coil motor (VCM), micro electro-mechanical systems (MEMS), piezoelectric systems, and shape memory alloys. The drive assembly 12 can help the camera optical lens assembly achieve an optimal imaging position, providing clear images of the subject at various object distances.

[0278] The imaging device 10 may be equipped with an electronic photosensitive element 13 (such as CMOS, CCD) with good sensitivity and low noise, which is disposed on the imaging surface of the photographic optical lens assembly, and can truly present the good imaging quality of the photographic optical lens assembly.

[0279] Furthermore, the imaging device 10 may further include an image stabilization module 14, which may be a kinetic energy sensor such as an accelerometer, a gyroscope, or a Hall Effect Sensor. In the eighth embodiment, the image stabilization module 14 is a gyroscope, but the present invention is not limited thereto. By adjusting the axial movement of the camera lens assembly to compensate for image blur caused by shaking at the moment of capture, the image quality of 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.

[0280] Ninth embodiment

[0281] Please refer to Figure 17A 、 Figure 17B and Figure 17C ,in Figure 17A FIG. 1 is a schematic diagram showing one side of an electronic device 20 according to a ninth embodiment of the present invention. Figure 17B Drawing in accordance with Figure 17A A schematic diagram of the other side of the electronic device 20, Figure 17C Drawing in accordance with Figure 17A Schematic diagram of the system of the electronic device 20. Figure 17A 、 Figure 17B and Figure 17C As can be seen, the electronic device 20 of the ninth embodiment is a smartphone. The electronic device 20 includes an imaging device 10a, a flash module 21, a focus assist module 22, an image signal processor 23 (ISP), a user interface 24, and an image software processor 25. When a user photographs a subject 26 through the user interface 24, the electronic device 20 uses the imaging device 10a to focus the image, activates the flash module 21 for fill light, and uses the subject distance information provided by the focus assist module 22 for rapid focusing. The image signal processor 23 and the image software processor 25 then perform image optimization processing to further enhance the image quality produced by the photographic optical lens assembly. The focus assist module 22 can utilize an infrared or laser focus assist system to achieve rapid focusing. The user interface 24 can utilize a touch screen or a physical capture button, combined with the diverse functions of the image processing software for image capture and processing.

[0282] In the ninth embodiment, the imaging device 10a may be the same as the imaging device 10 in the eighth embodiment ( Figure 17C In the imaging device 10a, each component and Figure 16Corresponding elements are designated by the same reference numerals in the figures (or the like), or the imaging device 10a may also include a lens assembly, which may be the same as or different from the photographic optical lens assembly of the present invention and is not described further herein. Furthermore, the imaging device 10a may include an electronic photosensitive element, and the imaging surface of the lens assembly or photographic optical lens assembly disposed therein may be configured similarly to the electronic photosensitive element 13 of the imaging device 10 in the eighth embodiment. Therefore, the electronic photosensitive elements in the ninth embodiment are labeled correspondingly to the electronic photosensitive element 13 in the eighth embodiment.

[0283] <Tenth embodiment>

[0284] Please refer to Figure 18A and Figure 18B ,in Figure 18A FIG. 1 is a schematic diagram showing one side of an electronic device 30 according to a tenth embodiment of the present invention. Figure 18B Drawing in accordance with Figure 18A Schematic diagram of the other side of the electronic device 30. Figure 18A and Figure 18B As can be seen, the electronic device 30 of the tenth embodiment is a tablet computer. The electronic device 30 includes five imaging devices 10b, 10c, 10d, 10e, and 10f, a user interface 34, and an image processing software (not shown). Imaging devices 10b and 10c are front-mounted imaging devices, while imaging devices 10d, 10e, and 10f are rear-mounted imaging devices. Similar to the ninth embodiment, when a user photographs a subject (not shown) through the user interface 34, the electronic device 30 utilizes the imaging devices 10b, 10c, 10d, 10e, and 10f to focus and capture light, and the image processing software performs image optimization processing to further enhance the image quality produced by the photographic optical lens assembly. The user interface 34 can utilize a touch screen or a physical capture button, in conjunction with the diverse functions of the image processing software for image capture and processing.

[0285] The five imaging devices 10b, 10c, 10d, 10e, and 10f of the tenth embodiment can all be identical to the imaging device 10 of the eighth embodiment, and are not further described herein. Specifically, the imaging devices 10b and 10c of the tenth embodiment can be respectively a wide-angle imaging device and an ultra-wide-angle imaging device, while the imaging devices 10d, 10e, and 10f can be respectively an ultra-wide-angle imaging device, a wide-angle imaging device, and a telephoto imaging device. Alternatively, they can be other types of imaging devices, and are not limited to this configuration.

[0286] <Eleventh Embodiment>

[0287] Please refer to Figure 19, is a schematic diagram illustrating an electronic device 40 according to an eleventh embodiment of the present invention. The electronic device 40 of the eleventh embodiment is a wearable device and includes an imaging device 41. The imaging device 41 may be the same as that of the eighth embodiment and is not further described herein.

[0288] Although the present invention has been disclosed above in terms of embodiments, this is not intended to limit the present invention. Anyone skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. A photographic optical lens set, characterized in that: comprising six lenses, which are, in order from the object side to the image side: a first lens, having negative refractive power, with a concave surface near the optical axis on its object side surface, and at least one convex critical point included at the off-axis portion of the object side surface of the first lens; a second lens, having positive refractive power, with a convex surface near the optical axis on its object side surface; a third lens, having positive refractive power; a fourth lens, having negative refractive power, with a concave surface near the optical axis on its image side surface; a fifth lens, having positive refractive power, with a convex surface near the optical axis on its image side surface; and a sixth lens, having negative refractive power, with a concave surface near the optical axis on its image side surface, and at least one convex surface included at the off-axis portion of the image side surface of the sixth lens; wherein, the total number of lenses of the photographic optical lens group is six, the Abbe number of the second lens is V2, the Abbe number of the fourth lens is V4, the Abbe number of the sixth lens is V6, the radius of curvature of the object side surface of the second lens is R3, the radius of curvature of the image side surface of the second lens is R4, the radius of curvature of the object side surface of the third lens is R5, the radius of curvature of the image side surface of the third lens is R6, the F-number of the photographic optical lens group is Fno, the maximum optical effective radius of the object side surface of the first lens is Y11, the maximum optical effective radius of the image side surface of the sixth lens is Y62, and they satisfy the following conditions: 30 < V2 + V4 + V6 < 85; |R3 / R4| ≤ 0.65; 0.45 ≤ (R5 + R6) / (R5 - R6) < 2.0; 1.20 < Fno < 2.45; and 0.65 < Y11 / Y62 < 1.

30.

2. The photographic optical lens set according to claim 1, characterized in that: The image side surface of the second lens is concave near the optical axis, and the object side surface of the sixth lens is convex near the optical axis.

3. The photographic optical lens set according to claim 1, characterized in that: The Abbe number of the second lens is V2, the Abbe number of the fourth lens is V4, the Abbe number of the sixth lens is V6, and they satisfy the following conditions: 30 < V2 + V4 + V6 ≤ 67.

0.

4. The photographic optical lens set according to claim 1, characterized in that: The Abbe number of the second lens is V2, the Abbe number of the fourth lens is V4, the Abbe number of the sixth lens is V6, the radius of curvature of the object side surface of the second lens is R3, the radius of curvature of the image side surface of the second lens is R4, the radius of curvature of the object side surface of the third lens is R5, the radius of curvature of the image side surface of the third lens is R6, the F-number of the photographic optical lens group is Fno, and they satisfy the following conditions: 59.2 ≤ V2 + V4 + V6 ≤ 70.5; 0.04 ≤ |R3 / R4| ≤ 0.65; 0.45 ≤ (R5 + R6) / (R5 - R6) ≤ 1.02; and 2.10 ≤ Fno ≤ 2.

43.

5. The photographic optical lens set according to claim 1, characterized in that: The absolute value of the radius of curvature of the image side surface of the sixth lens is the smallest among the absolute values of the radii of curvature of all lens surfaces in the photographic optical lens group.

6. The photographic optical lens set according to claim 1, characterized in that: The maximum optical effective radius of the object side surface of the first lens is Y11, the entrance pupil diameter of the photographic optical lens group is EPD, and they satisfy the following conditions: 2.0 < Y11 / EPD < 7.

0.

7. The photographic optical lens set according to claim 1, characterized in that: The radius of curvature of the object side surface of the first lens is R1, the maximum image height of the photographic optical lens group is ImgH, the F-number of the photographic optical lens group is Fno, and they satisfy the following conditions: -3.0 < R1 / ImgH < 0; and 1.20 < Fno ≤ 2.

35.

8. The photographic optical lens set according to claim 1, characterized in that: The maximum optical effective radius of the object side surface of the first lens is Y11, and the maximum optical effective radius of the image side surface of the sixth lens is Y62, which satisfy the following conditions: 0.65 < Y11 / Y62 ≤ 0.

86.

9. The photographic optical lens set according to claim 1, characterized in that: The near optical axis part of the object side surface of the fourth lens is convex.

10. The photographic optical lens set according to claim 1, characterized in that: The maximum optical effective radius of the object side surface of the first lens is Y11, the maximum optical effective radius of the image side surface of the sixth lens is Y62, the entrance pupil diameter of the photographic optical lens group is EPD, the curvature radius of the object side surface of the first lens is R1, the maximum image height of the photographic optical lens group is ImgH, the Abbe number of the sixth lens is V6, and the refractive index of the sixth lens is N6, which satisfy the following conditions: 0.75 ≤ Y11 / Y62 ≤ 1.12; 2.75 ≤ Y11 / EPD ≤ 4.06; -1.50 < R1 / ImgH ≤ -0.85; and 10.23 ≤ V6 / N6 ≤ 14.

34.

11. The photographic optical lens set according to claim 1, characterized in that: The Abbe number of the sixth lens is V6, and the refractive index of the sixth lens is N6, which satisfy the following conditions: 5 < V6 / N6 ≤ 14.

34.

12. A photographic optical lens set, characterized in that: It includes six lenses, and the six lenses are, in order from the object side to the image side: A first lens with negative refractive power, the near optical axis part of its object side surface is concave, and at least one convex critical point is included at the off-axis part of the object side surface of the first lens; A second lens with positive refractive power, the near optical axis part of its object side surface is convex; A third lens with positive refractive power; A fourth lens with negative refractive power, the near optical axis part of its image side surface is concave; A fifth lens with positive refractive power, the near optical axis part of its image side surface is convex; and A sixth lens with negative refractive power, the near optical axis part of its image side surface is concave, and at least one convex surface is included at the off-axis part of the image side surface of the sixth lens; Among them, the total number of lenses of the photographic optical lens group is six, the Abbe number of the second lens is V2, the Abbe number of the fourth lens is V4, the Abbe number of the sixth lens is V6, the curvature radius of the object side surface of the third lens is R5, the curvature radius of the image side surface of the third lens is R6, the F-number of the photographic optical lens group is Fno, the maximum optical effective radius of the object side surface of the first lens is Y11, the maximum optical effective radius of the image side surface of the sixth lens is Y62, the curvature radius of the object side surface of the second lens is R3, and the curvature radius of the image side surface of the second lens is R4, which satisfy the following conditions: 30 < V2 + V4 + V6 < 85; 0.45 ≤ (R5 + R6) / (R5 - R6) < 2.0; 2.10 ≤ Fno < 2.45; 0.50 < Y11 / Y62 ≤ 1.12; and |R3 / R4| < 1.

0.

13. The photographic optical lens set according to claim 12, characterized in that: The near optical axis part of the image side surface of the second lens is concave, and the near optical axis part of the object side surface of the sixth lens is convex.

14. The photographic optical lens set according to claim 12, characterized in that: The Abbe number of the second lens is V2, the Abbe number of the fourth lens is V4, and the Abbe number of the sixth lens is V6, which satisfy the following conditions: 30 < V2 + V4 + V6 < 75.

15. The photographic optical lens set according to claim 12, characterized in that: The absolute value of the radius of curvature of the image-side surface of the sixth lens is the smallest among the absolute values of the radii of curvature of all lens surfaces in the photographic optical lens group.

16. The photographic optical lens set according to claim 12, characterized in that: The radius of curvature of the object-side surface of the first lens is R1, and the maximum image height of the photographic optical lens group is ImgH, which satisfies the following condition: -3.0 < R1 / ImgH < 0.

17. The photographic optical lens set according to claim 12, characterized in that: The focal length of the first lens is f1, the focal length of the second lens is f2, and the focal length of the sixth lens is f6, which satisfies the following condition: -0.60 < f1 / f2; and 0.50 < f1 / f6 < 4.

0.

18. The photographic optical lens set according to claim 12, characterized in that: The Abbe number of the sixth lens is V6, and the refractive index of the sixth lens is N6, which satisfies the following condition: 10.23 ≤ V6 / N6 ≤ 14.34.

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