Photographic optical lens assembly, image capturing device and electronic device

Abstract

The invention discloses a photographic optical lens group which comprises four lenses. The four lenses are sequentially a first lens, a second lens, a third lens and a fourth lens from the object side to the image side along an optical path. The four lenses are respectively provided with an object side surface facing the object side direction and an image side surface facing the image side direction. The first lens element has positive refractive power. The third lens element with positive refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The object-side surface of the third lens element and the image-side surface of the third lens element are aspheric. At least one of the object-side surface and the image-side surface of the third lens element has at least one inflection point. When specific conditions are met, the photographing optical lens group can meet the requirements of miniaturization and high imaging quality at the same time. The invention further discloses an image capturing device with the photographing optical lens group and an electronic device with the image capturing device.

Description

Technical Field

[0001] This disclosure relates to a photographic optical lens assembly, an image acquisition device, and an electronic device, particularly a photographic optical lens assembly and an image acquisition device suitable for electronic devices. Background Technology

[0002] With advancements in semiconductor technology, the performance of electronic image sensors has improved, and pixels can be made smaller. As a result, optical lenses with high image quality have become an indispensable component.

[0003] With the rapid advancement of technology, electronic devices equipped with optical lenses are being used in a wider range of applications, leading to more diverse requirements for these lenses. Since existing optical lenses often struggle to achieve a balance between image quality, sensitivity, aperture size, size, and viewing angle, this invention provides an optical lens that meets these needs. Summary of the Invention

[0004] This disclosure provides a photographic optical lens assembly, an image capturing device, and an electronic device. The photographic optical lens assembly comprises four lenses arranged sequentially from the object side to the image side along a light path. Under certain conditions, the photographic optical lens assembly provided by this disclosure can simultaneously meet the requirements of miniaturization and high image quality.

[0005] This disclosure provides a photographic optical assembly comprising four lenses. The four lenses are sequentially arranged from the object side to the image side along the optical path as a first lens, a second lens, a third lens, and a fourth lens. Each of the four lenses has an object-side surface facing the object side and an image-side surface facing the image side. Preferably, the first lens has positive refractive power. Preferably, the third lens has positive refractive power. Preferably, the object-side surface of the third lens is concave near the optical axis. Preferably, the image-side surface of the third lens is convex near the optical axis. Preferably, both the object-side surface and the image-side surface of the third lens are aspherical. Preferably, at least one of the object-side surface and the image-side surface of the third lens has at least one inflection point. Wherein, the optical axis spacing between the first and second lenses is T12, the optical axis spacing between the third and fourth lenses is T34, the optical axis distance from the image-side surface of the fourth lens to the imaging plane is BL, the optical axis distance from the object-side surface of the first lens to the imaging plane is TL, the maximum imaging height of the photographic optical lens group is ImgH, 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 optical axis thickness of the first lens is CT1, and the optical axis thickness of the fourth lens is CT4. Preferably, it satisfies the following conditions:

[0006] 1.00 <T34 / BL<10.00;

[0007] 2.20 <T34 / T12;

[0008] 0.50 < TL / ImgH < 1.30;

[0009] 0.20 < R5 / R6 < 100.00; and

[0010] 0.10 < CT1 / CT4 < 1.70.

[0011] The present disclosure further provides a photographic optical lens group, including four lenses. The four lenses are, in order from the object side to the image side along the optical path, the first lens, the second lens, the third lens, and the fourth lens. The four lenses respectively have an object side surface facing the object side direction and an image side surface facing the image side direction. Preferably, the first lens has a positive refractive power. Preferably, the image side surface of the second lens is convex near the optical axis. Preferably, the third lens has a positive refractive power. Preferably, the object side surface of the third lens is concave near the optical axis. Preferably, the image side surface of the third lens is convex near the optical axis. Preferably, both the object side surface and the image side surface of the third lens are aspherical. Preferably, at least one of the object side surface and the image side surface of the third lens has at least one inflection point. Among them, the distance between the first lens and the second lens on the optical axis is T12, the distance between the third lens and the fourth lens on the optical axis is T34, the distance from the object side surface of the first lens to the imaging surface on the optical axis is TL, the maximum imaging height of the photographic optical lens group is ImgH, the radius of curvature of the image side surface of the third lens is R6, the radius of curvature of the image side surface of the fourth lens is R8, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the distance from the object side surface of the first lens to the image side surface of the third lens on the optical axis is Dr1r6, and the distance from the image side surface of the third lens to the image side surface of the fourth lens on the optical axis is Dr6r8, which preferably satisfy the following conditions:

[0012] 2.20 < T34 / T12;

[0013] 0.50 < TL / ImgH < 1.40;

[0014] -1.70 < R6 / R8;

[0015] -2.50 < f3 / f4 < 10.00; and

[0016] 0.20 < Dr1r6 / Dr6r8 < 2.00.

[0017] The present disclosure provides an imaging device, which includes the aforementioned photographic optical lens group and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the photographic optical lens group.

[0018] The present disclosure provides an electronic device, which includes the aforementioned imaging device.

[0019] When T34 / T12 meets the above conditions, the ratio of the distance between the third and fourth lenses to the distance between the first and second lenses can be adjusted, which helps to increase the image size.

[0020] When TL / ImgH meets the above conditions, it helps to achieve a balance between compressing the total length and increasing the imaging surface, thus meeting the requirements for miniaturization.

[0021] When T34 / BL meets the above conditions, the ratio of the distance between the third and fourth lenses to the back focal length of the photographic optical group can be adjusted, which helps to reduce the size of the photographic optical group.

[0022] When R5 / R6 meets the above conditions, the surface shape and refractive power of the third lens can be adjusted, which helps to adjust the back focal length.

[0023] When CT1 / CT4 meet the above conditions, the ratio of the center thickness of the first lens to the center thickness of the fourth lens can be adjusted to achieve a balance between manufacturing yield and center field of view imaging quality.

[0024] When R6 / R8 meets the above conditions, the image side profile of the third and fourth lenses can be adjusted, which helps to adjust the optical path of the photographic optical lens group to balance aberrations and improve image quality.

[0025] When f3 / f4 meets the above conditions, the focal length ratio of the third lens and the fourth lens can be adjusted, which helps to balance the refractive power distribution of the photographic optical lens group.

[0026] When Dr1r6 / Dr6r8 meets the above conditions, it helps to increase the tightness of the lens arrangement from the first lens to the third lens, thereby reducing the volume.

[0027] The foregoing description of the contents of this disclosure and the following description of the embodiments are used to demonstrate and explain the spirit and principles of this disclosure, and to provide a further explanation of the claims of this disclosure. Attached Figure Description

[0028] Figure 1 A schematic diagram of an image-capturing device according to a first embodiment of this disclosure is shown.

[0029] Figure 2 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the first embodiment.

[0030] Figure 3 A schematic diagram of an image-capturing device according to a second embodiment of the present disclosure is shown.

[0031] Figure 4 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the second embodiment.

[0032] Figure 5 A schematic diagram of an imaging device according to a third embodiment of this disclosure is shown.

[0033] Figure 6 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the third embodiment.

[0034] Figure 7 A schematic diagram of an imaging device according to the fourth embodiment of this disclosure is shown.

[0035] Figure 8 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fourth embodiment.

[0036] Figure 9 A schematic diagram of an imaging device according to the fifth embodiment of this disclosure is shown.

[0037] Figure 10 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fifth embodiment.

[0038] Figure 11 A schematic diagram of an imaging device according to the sixth embodiment of this disclosure is shown.

[0039] Figure 12 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the sixth embodiment.

[0040] Figure 13 A schematic diagram of an imaging device according to the seventh embodiment of this disclosure is shown.

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

[0042] Figure 15 A schematic diagram of an imaging device according to the eighth embodiment of this disclosure is shown.

[0043] Figure 16 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the eighth embodiment.

[0044] Figure 17 A perspective schematic diagram of an imaging device according to the ninth embodiment of this disclosure is shown.

[0045] Figure 18 A perspective view of one side of an electronic device according to the tenth embodiment of this disclosure is shown.

[0046] Figure 19 Draw Figure 18 A three-dimensional diagram of the other side of the electronic device.

[0047] Figure 20 Draw Figure 18 System block diagram of an electronic device.

[0048] Figure 21 A schematic diagram showing one side of an electronic device according to the eleventh embodiment of this disclosure is shown.

[0049] Figure 22 Draw Figure 21 A schematic diagram of the other side of the electronic device.

[0050] Figure 23 A perspective view of one side of an electronic device according to the twelfth embodiment of this disclosure is shown.

[0051] Figure 24 A perspective view of one side of an electronic device according to the thirteenth embodiment of this disclosure is shown.

[0052] Figure 25 Draw Figure 24 A three-dimensional diagram of the other side of the electronic device.

[0053] Figure 26 A schematic diagram illustrating parameters Y1R1 and Y4R2 according to the first embodiment of this disclosure is shown.

[0054] Figure 27 A schematic diagram illustrating the inflection point and critical point on the lens surface according to the first embodiment of this disclosure.

[0055] Figure 28 A schematic diagram illustrating one configuration of an optical path reversing element in a photographic optical lens assembly, in accordance with the present invention.

[0056] Figure 29 A schematic diagram illustrating another configuration of an optical path reversing element in a photographic optical lens assembly, as disclosed herein.

[0057] Figure 30 A schematic diagram illustrating one configuration of two optical path reversing elements in a photographic optical lens group according to the present invention is shown.

[0058] [Symbol Explanation]

[0059] 1,2,3,4,5,6,7,8,100,100a,100b,100c,100d,100e,100f,100g,100h,10 0i,100j,100k,100m,100n,100p,100q,100r,100s,100t,100u,100v: imaging device

[0060] 101: Imaging Lens

[0061] 102: Drive unit

[0062] 103: Electronic photosensitive element

[0063] 104: Image Stabilization Module

[0064] 200, 300, 400, 500: Electronic devices

[0065] 201, 401, 501: Flash module

[0066] 202: Focusing Assist Module

[0067] 203: Image Signal Processor

[0068] 204, 301, 502, 503: Display modules

[0069] 504: Rotating shaft mechanism

[0070] 205: Image Software Processor

[0071] 206: Subject

[0072] OA1: First optical axis

[0073] OA2: Second optical axis

[0074] OA3: Third optical axis

[0075] LF, LF1, LF2: Reflective elements

[0076] LG: Lens Group

[0077] ST: Aperture

[0078] S1, S2: Aperture

[0079] E1: First lens

[0080] E2: Second lens

[0081] E3: Third Lens

[0082] E4: Fourth Lens

[0083] E5: Filter element

[0084] IMG: Imaging Surface

[0085] IS: Electronic photosensitive element

[0086] P: Inversion point

[0087] C: Critical point

[0088] Y1R1: Maximum effective radius of the object-side surface of the first lens

[0089] Y4R2: Maximum effective radius of the image-side surface of the fourth lens Detailed Implementation

[0090] The photographic optical assembly comprises four lenses, which are arranged sequentially from the object side to the image side along the light path as a first lens, a second lens, a third lens, and a fourth lens. Each of the four lenses has an object-side surface facing the object side and an image-side surface facing the image side.

[0091] The first lens has positive refractive power; thereby, it can provide the main converging power of the photographic optical assembly, effectively compressing the system space and achieving the miniaturization requirement. The image-side surface of the first lens can be concave near the optical axis; thereby, it helps to correct astigmatism.

[0092] The second lens can have negative refractive power; this helps to correct spherical aberration. The object-side surface of the second lens can be concave near the optical axis; this allows adjustment of the surface shape and refractive power of the second lens to correct aberrations. The image-side surface of the second lens can be convex near the optical axis; this allows adjustment of the direction of light travel, helping to increase the imaging area.

[0093] The third lens has positive refractive power; this helps to adjust the back focal length, thereby shortening the overall length of the photographic optical group. The object-side surface of the third lens is concave near the optical axis, and the image-side surface of the third lens is convex near the optical axis; this allows control over the angle of incidence of light onto the object-side surface of the third lens, preventing excessive incident angles that could cause light divergence and poor relative illumination around the edges.

[0094] Both the object-side surface and the image-side surface of the third lens are aspherical. Therefore, by utilizing the characteristics of aspherical lens surfaces, distortions in photographic optical assemblies can be effectively corrected, and the overall length of the photographic optical assembly can be shortened.

[0095] At least one of the object-side surface and the image-side surface of the third lens has at least one inflection point. This helps to correct off-axis aberrations in the photographic optical group and shorten the overall length of the photographic optical group. Please refer to... Figure 27 This is a schematic diagram illustrating the inflection point P on the lens surface according to the first embodiment of this disclosure. Figure 27 In the first lens E1 and the second lens E2, each of the image-side surfaces has one inflection point P, the third lens E3, each of the object-side surface and the image-side surface has two inflection points P, and the fourth lens E4, each of the object-side surface and the image-side surface has three inflection points P. Figure 27 The illustration of the first embodiment of this disclosure is provided as an example. However, in other embodiments of this disclosure, each lens may have one or more inversion points.

[0096] The object-side surface of the fourth lens can be convex near the optical axis; this helps to balance the refractive power of the fourth lens and correct coma and astigmatism. The image-side surface of the fourth lens can be concave near the optical axis; this helps to shorten the back focal length.

[0097] The distance between the first lens and the second lens on the optical axis is T12, and the distance between the third lens and the fourth lens on the optical axis is T34, which satisfy the following condition: 2.20 < T34 / T12. Thereby, the ratio of the lens spacing between the third lens and the fourth lens to the lens spacing between the first lens and the second lens can be adjusted, which helps to increase the imaging size. Among them, the following condition can also be satisfied: 2.20 < T34 / T12 < 10.00. Among them, the following condition can also be satisfied: 2.40 < T34 / T12 < 5.00. Among them, the following condition can also be satisfied: 2.76 ≤ T34 / T12 ≤ 4.96.

[0098] The distance from the object side surface of the first lens to the imaging surface on the optical axis is TL, and the maximum imaging height of the photographic optical lens group is ImgH (which can be half of the total length of the diagonal of the effective sensing area of the electronic photosensitive element), which satisfy the following condition: 0.50 < TL / ImgH < 1.40. Thereby, it helps to balance between compressing the total length and enlarging the imaging surface, meeting the requirements of miniaturization. Among them, the following condition can also be satisfied: 0.50 < TL / ImgH < 1.30. Among them, the following condition can also be satisfied: 0.80 < TL / ImgH < 1.25. Among them, the following condition can also be satisfied: 1.07 ≤ TL / ImgH ≤ 1.21.

[0099] The distance between the third lens and the fourth lens on the optical axis is T34, and the distance from the image side surface of the fourth lens to the imaging surface on the optical axis is BL, which can satisfy the following condition: 1.00 < T34 / BL < 10.00. Thereby, the ratio of the lens spacing between the third lens and the fourth lens to the back focal length of the photographic optical lens group can be adjusted, which helps to reduce the volume of the photographic optical lens group. Among them, the following condition can also be satisfied: 1.10 < T34 / BL < 5.00. Among them, the following condition can also be satisfied: 1.05 ≤ T34 / BL ≤ 2.45.

[0100] 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 can satisfy the following condition: 0.20 < R5 / R6 < 100.00. Thereby, the surface shape and refractive power of the third lens can be adjusted, which helps to adjust the back focal length. Among them, the following condition can also be satisfied: 0.50 < R5 / R6 < 10.00. Among them, the following condition can also be satisfied: 1.40 < R5 / R6 < 5.00. Among them, the following condition can also be satisfied: 1.50 ≤ R5 / R6 ≤ 2.86.

[0101] The thickness of the first lens on the optical axis is CT1, and the thickness of the fourth lens on the optical axis is CT4, which can satisfy the following conditions: 0.10 < CT1 / CT4 < 1.70. Thus, the ratio of the central thickness of the first lens to the central thickness of the fourth lens can be adjusted, and a balance can be achieved between the manufacturing yield and the imaging quality of the central field of view. Among them, the following conditions can also be satisfied: 0.20 < CT1 / CT4 < 1.55. Among them, the following conditions can also be satisfied: 0.45 ≤ CT1 / CT4 ≤ 1.30.

[0102] The radius of curvature of the image-side surface of the third lens is R6, and the radius of curvature of the image-side surface of the fourth lens is R8, which can satisfy the following conditions: -1.70 < R6 / R8. Thus, the surface profiles of the image sides of the third lens and the fourth lens can be adjusted, which helps to adjust the optical path of the photographic optical lens group to balance aberrations with each other and improve the imaging quality. Among them, the following conditions can also be satisfied: -1.65 < R6 / R8 < 1.00. Among them, the following conditions can also be satisfied: -3.04 ≤ R6 / R8 ≤ -0.79. Among them, the following conditions can also be satisfied: -1.65 < R6 / R8 < -0.20.

[0103] The focal length of the third lens is f3, and the focal length of the fourth lens is f4, which can satisfy the following conditions: -2.50 < f3 / f4 < 10.00. Thus, the focal length ratio of the third lens and the fourth lens can be adjusted, which helps to balance the refractive power distribution of the photographic optical lens group. Among them, the following conditions can also be satisfied: -2.30 < f3 / f4 < 0.60. Among them, the following conditions can also be satisfied: -2.00 < f3 / f4 < 0.50. Among them, the following conditions can also be satisfied: -1.66 ≤ f3 / f4 ≤ 0.15.

[0104] The distance on the optical axis from the object-side surface of the first lens to the image-side surface of the third lens is Dr1r6, and the distance on the optical axis from the image-side surface of the third lens to the image-side surface of the fourth lens is Dr6r8, which can satisfy the following conditions: 0.20 < Dr1r6 / Dr6r8 < 2.00. Thus, it helps to increase the tightness of the lens arrangement from the first lens to the third lens to compress the volume. Among them, the following conditions can also be satisfied: 0.20 < Dr1r6 / Dr6r8 < 1.60. Among them, the following conditions can also be satisfied: 0.40 < Dr1r6 / Dr6r8 < 1.50. Among them, the following conditions can also be satisfied: 0.50 < Dr1r6 / Dr6r8 < 1.40. Among them, the following conditions can also be satisfied: 0.76 ≤ Dr1r6 / Dr6r8 ≤ 1.24.

[0105] The focal length of the photographic optical lens group is f, and the combined focal length of the first lens and the second lens is f12, which can satisfy the following conditions: 0.10 < f / f12 < 0.95. Thereby, the overall refractive power of the first lens and the second lens can be adjusted, which helps to balance the refractive power configuration of the photographic optical lens group. Among them, the following conditions can also be satisfied: 0.35 < f / f12 < 0.90.

[0106] The distance on the optical axis from the object side surface of the first lens to the image side surface of the fourth lens is TD, and the distance between the first lens and the second lens on the optical axis is T12, which can satisfy the following conditions: 2.00 < TD / T12 < 30.00. Thereby, the ratio of the distance from the object side surface of the first lens to the image side surface of the fourth lens to the distance between the first lens and the second lens can be adjusted, which helps to balance between the optical path adjustment and the volume of the photographic optical lens group. Among them, the following conditions can also be satisfied: 4.00 < TD / T12 < 20.00. Among them, the following conditions can also be satisfied: 5.00 < TD / T12 < 11.00.

[0107] The distance on the optical axis from the object side surface of the first lens to the image side surface of the fourth lens is TD, and the distance between the second lens and the third lens on the optical axis is T23, which can satisfy the following conditions: 2.00 < TD / T23 < 50.00. Thereby, the spatial configuration of the photographic optical lens group can be adjusted, which helps to balance the volume distribution of the photographic optical lens group. Among them, the following conditions can also be satisfied: 5.00 < TD / T23 < 30.00.

[0108] The maximum Abbe number among all the lenses of the photographic optical lens group is Vmax, which can satisfy the following conditions: 70.0 < Vmax < 90.0. Thereby, the material distribution can be adjusted, which helps to maintain low dispersion. Among them, the following conditions can also be satisfied: 75.0 < Vmax < 88.0.

[0109] The maximum effective radius of the object side surface of the first lens is Y1R1, and the maximum effective radius of the image side surface of the fourth lens is Y4R2, which can satisfy the following conditions: 3.30 < Y4R2 / Y1R1 < 9.50. Thereby, the ratio relationship of the effective diameters of the lenses can be adjusted, which helps to increase the imaging size and the screen-to-body ratio, and also helps to be applied to folding mobile phones. Among them, the following conditions can also be satisfied: 3.50 < Y4R2 / Y1R1 < 6.00. Please refer to Figure 26 , which is a schematic diagram showing the parameters Y1R1 and Y4R2 in accordance with the first embodiment of the present disclosure.

[0110] The radius of curvature of the image-side surface of the first lens is R2, and the radius of curvature of the object-side surface of the second lens is R3, which can satisfy the following condition: (R2 + R3) / (R2 - R3) < 0.40. Thereby, the radii of curvature of two adjacent surfaces in the lenses of the photographic optical lens group can be adjusted to correct the chromatic aberration of the photographic optical lens group. Among them, the following condition can also be satisfied: -10.00 < (R2 + R3) / (R2 - R3) < 0.00.

[0111] The minimum Abbe number among all the lenses of the photographic optical lens group is Vmin, which can satisfy the following condition: 5.0 < Vmin < 21.0. Thereby, the distribution of lens materials can be adjusted and the chromatic aberration generated by the photographic optical lens group can be corrected, which helps to improve the imaging quality. Among them, the following condition can also be satisfied: 12.0 < Vmin < 20.0.

[0112] The maximum viewing angle in the photographic optical lens group is FOV, which can satisfy the following condition: 70 degrees < FOV < 110 degrees. Thereby, it helps to control the photographic range of the photographic optical lens group to meet a wider range of usage requirements. Among them, the following condition can also be satisfied: 80 degrees < FOV < 105 degrees.

[0113] The focal length of the photographic optical lens group is f, 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 can satisfy the following condition: 0.01 < |f / R3| + |f / R4| < 3.00. Thereby, it helps to control the surface curvature of the second lens to reduce the manufacturing difficulty and correct the aberration, and improve the imaging quality. Among them, the following condition can also be satisfied: 0.15 < |f / R3| + |f / R4| < 2.00.

[0114] The focal length of the photographic optical lens group is f, and the combined focal length of the third lens and the fourth lens is f34, which can satisfy the following condition: -0.500 < f / f34 < 0.900. Thereby, the overall refractive power of the third lens and the fourth lens can be adjusted, which helps to reduce the back focal length. Among them, the following condition can also be satisfied: -0.400 < f / f34 < 0.800.

[0115] The distance on the optical axis from the object-side surface of the first lens to the image-side surface of the fourth lens is TD, and the thickness of the second lens on the optical axis is CT2, which can satisfy the following condition: 10.50 < TD / CT2. Thereby, the proportion of the second lens in the photographic optical lens group can be adjusted, which helps to balance the volume utilization rate and manufacturing difficulty of the photographic optical lens group. Among them, the following condition can also be satisfied: 11.00 < TD / CT2 < 20.00.

[0116] Each of the technical features in the photographic optical lens group disclosed in the above disclosure can be combined and configured to achieve the corresponding effects.

[0117] In the photographic optical lens assembly disclosed in this invention, the lens material can be glass or plastic. If the lens is made of glass, the freedom in configuring the refractive power of the photographic optical lens assembly can be increased, and the influence of external environmental temperature changes on imaging can be reduced. Glass lenses can be manufactured using techniques such as grinding or molding. If the lens is made of plastic, production costs can be effectively reduced. Furthermore, spherical or aspherical (ASP) surfaces can be incorporated into the lens surface. Spherical lenses reduce manufacturing difficulty, while aspherical surfaces provide more controllable variables to reduce aberrations, decrease the number of lenses, and effectively reduce the overall length of the photographic optical lens assembly disclosed in this invention. Further, aspherical surfaces can be manufactured using methods such as plastic injection molding or molding glass lenses.

[0118] In the photographic optical lens assembly disclosed in this disclosure, if the lens surface is aspherical, it means that all or part of the optically effective area of ​​the lens surface is aspherical.

[0119] In the photographic optical lens assembly disclosed herein, additives can be selectively added to any (or more) lens materials to produce light absorption or interference effects, thereby altering the lens's transmittance for specific wavelengths of light and reducing stray light and color shift. For example, the additives may filter out light in the 600 nm to 800 nm wavelength range to help reduce excess red or infrared light; or they may filter out light in the 350 nm to 450 nm wavelength range to reduce excess blue or ultraviolet light. Therefore, the additives can prevent specific wavelengths of light from interfering with imaging. Furthermore, the additives can be uniformly mixed into plastic and manufactured into lenses using injection molding technology. Additionally, the additives can also be deposited on the lens surface as a coating to provide the aforementioned effects.

[0120] In the photographic optical lens assembly disclosed in this disclosure, if the lens surface is convex and the position of the convex surface is not defined, it means that the convex surface can be located near the optical axis of the lens surface; if the lens surface is concave and the position of the concave surface is not defined, it means that the concave surface can be located near the optical axis of the lens surface. If the refractive power or focal length of the lens is not defined in its region, it means that the refractive power or focal length of the lens can be the refractive power or focal length of the lens near the optical axis.

[0121] In the photographic optical lens assembly disclosed in this disclosure, the inflection point of the lens surface refers to the boundary point where the curvature of the lens surface changes from positive to negative. The critical point of the lens surface refers to the point of tangency on the tangent line between a plane perpendicular to the optical axis and the lens surface, and the critical point is not located on the optical axis. Please refer to... Figure 27 This is a schematic diagram illustrating the critical point C on the lens surface according to the first embodiment of this disclosure. Figure 27In the image-side surface of the second lens E2 and the image-side surface of the fourth lens E4 each have a critical point C at the off-axis. Figure 27 The illustration of the first embodiment of this disclosure is provided as an example. However, in other embodiments of this disclosure, each lens may have one or more critical points off-axis.

[0122] In the photographic optical lens assembly disclosed herein, the imaging surface of the photographic optical lens assembly can be a plane or a curved surface with any curvature, depending on the corresponding electronic photosensitive element, especially a curved surface with a concave surface facing the object side.

[0123] In the photographic optical assembly disclosed herein, one or more imaging correction elements (such as planar elements) can be selectively disposed between the lens closest to the imaging plane and the imaging plane in the imaging optical path to achieve the effect of correcting image curvature (such as image distortion). The optical properties of this imaging correction element, such as curvature, thickness, refractive index, position, and surface type (convex or concave, spherical or aspherical, diffractive surface, and Fresnel surface, etc.), can be adjusted according to the requirements of the imaging device. Generally, a preferred configuration of the imaging correction element is to place a thin plano-concave element with a concave surface facing the object side near the imaging plane.

[0124] In the photographic optical lens assembly disclosed herein, at least one element with a light-path-deflecting function, such as a prism or a mirror, can be selectively disposed between the subject and the imaging surface in the imaging optical path. The prism surface or mirror surface can be a plane, spherical, aspherical, or freeform surface, etc., to provide a higher degree of spatial flexibility in the photographic optical lens assembly, allowing the thinning of electronic devices to be unrestricted by the total optical length of the photographic optical lens assembly. For further explanation, please refer to... Figure 28 and Figure 29 ,in Figure 28 This is a schematic diagram illustrating an arrangement of an optical path reversing element in a photographic optical lens assembly according to the present disclosure, and Figure 29 This is a schematic diagram illustrating another configuration of an optical path reversing element according to this disclosure in a photographic optical lens assembly. For example... Figure 28 and Figure 29 As shown, the photographic optical lens group can travel along the light path from the subject (not shown) to the imaging plane IMG, and sequentially includes a first optical axis OA1, a light path deflection element LF, and a second optical axis OA2, wherein the light path deflection element LF can be as follows: Figure 28 As shown, it is positioned between the subject and the lens group LG of the photographic optical lens assembly, or as... Figure 29 The lens group (LG) is positioned between the imaging plane (IMG) and the photographic optical lens group. Please also refer to... Figure 30 This is a schematic diagram illustrating one configuration of two optical path reversing elements in a photographic optical lens assembly according to the present disclosure, such as... Figure 30As shown, the photographic optical lens assembly can also travel along the light path from the subject (not shown) to the imaging plane IMG, and sequentially includes a first optical axis OA1, a first optical path reversing element LF1, a second optical axis OA2, a second optical path reversing element LF2, and a third optical axis OA3. The first optical path reversing element LF1 is positioned between the subject and the lens group LG of the photographic optical lens assembly, and the second optical path reversing element LF2 is positioned between the lens group LG of the photographic optical lens assembly and the imaging plane IMG. Furthermore, the direction of light travel along the first optical axis OA1 can be as follows: Figure 30 The direction shown is the same as the direction of light travel along the third optical axis OA3. The photographic optical lens group may also selectively be configured with more than three optical path deflection elements; this disclosure is not limited to the type, number, and position of the optical path deflection elements disclosed in the accompanying drawings.

[0125] The photographic optical lens assembly disclosed herein may include at least one aperture stop, which may be located before the first lens, between the lenses, or after the last lens. The aperture stop may be of the type such as a glare stop or a field stop, and may be used to reduce stray light and help improve image quality.

[0126] In the photographic optical lens assembly disclosed in this disclosure, the aperture can be configured as a front aperture or a central aperture. A front aperture means the aperture is positioned between the subject and the first lens, while a central aperture means the aperture is positioned between the first lens and the imaging plane. A front aperture allows for a longer distance between the exit pupil and the imaging plane, resulting in a telecentric effect and increasing the efficiency of image reception by the CCD or CMOS sensor. A central aperture helps to widen the field of view of the photographic optical lens assembly.

[0127] This disclosure allows for the appropriate inclusion of a variable aperture element, which can be a mechanical component or a light-regulating element, capable of electrically or signal-controlled aperture size and shape. The mechanical component may include movable parts such as blade assemblies or shielding plates; the light-regulating element may include masking materials such as filter elements, electrochromic materials, or liquid crystal layers. 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 disclosure, allowing for adjustment of image quality, such as depth of field or exposure speed, by changing the aperture value.

[0128] This disclosure allows for the appropriate placement of one or more optical elements to restrict the form of light passing through a photographic optical lens assembly. These optical elements may be filters, polarizers, etc., but this disclosure is not limited thereto. Furthermore, the optical elements may be monolithic elements, composite components, or thin films, but this disclosure is not limited thereto. The optical elements may be placed between the object end, image end, or lenses of the photographic optical lens assembly to control the passage of specific forms of light, thereby meeting application requirements.

[0129] The photographic optical lens assembly disclosed herein may include at least one optical lens, optical element, or carrier, at least one surface of which has a low-reflection layer. This low-reflection layer effectively reduces stray light generated by reflection at the interface. The low-reflection layer may be disposed in a non-effective area of ​​the object-side surface or image-side surface of the optical lens, or on the connecting surface between the object-side and image-side surfaces. The optical element may be a light-shielding element, an annular spacer element, a lens barrel element, a cover glass, blue glass, a filter element (color filter), a light path deflection element (reflective element), a prism, or a mirror, etc. The carrier may be a lens mount, a microlens disposed on the photosensitive element, the periphery of the photosensitive element substrate, or a glass sheet used to protect the photosensitive element, etc.

[0130] In the photographic optical lens assembly disclosed herein, the object side and image side are determined according to the optical axis direction, and the data on the optical axis are calculated along the optical axis. Furthermore, if the optical axis is deflected by an optical path deflection element, the data on the optical axis are also calculated along the optical axis.

[0131] Based on the above implementation methods, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0132] <First Embodiment>

[0133] Please refer to Figures 1 to 2 ,in Figure 1 A schematic diagram of an image-capturing device according to a first embodiment of this disclosure is shown. Figure 2 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the first embodiment. Figure 1 It is known that the image capturing device 1 includes a photographic optical lens group (unlabeled) and an electronic image sensor IS. The photographic optical lens group, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, an aperture stop S1, a second lens E2, a third lens E3, an aperture stop S2, a fourth lens E4, and an imaging surface IMG. The electronic image sensor IS is disposed on the imaging surface IMG. The photographic optical lens group comprises four lenses (E1, E2, E3, and E4), and there are no other interposed lenses between the lenses.

[0134] The first lens E1 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical, and its image-side surface has a point of inflection.

[0135] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both of its surfaces are aspherical. Its image-side surface has a point of inflection and a critical point off-axis.

[0136] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface also has two inflection points.

[0137] The fourth lens E4 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has three inflection points, its image-side surface has three inflection points, and its image-side surface has a critical point off-axis.

[0138] The equations for the aspherical surfaces of the above lenses are expressed as follows:

[0139]

[0140] X: The displacement parallel to the optical axis from the intersection of the aspherical surface and the optical axis to a point on the aspherical surface at a distance Y from the optical axis;

[0141] Y: The perpendicular distance between a point on the aspherical curve and the optical axis;

[0142] R: Radius of curvature;

[0143] k: cone coefficient; and

[0144] Ai: The i-th order aspherical coefficient.

[0145] 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 angle of view in the photographic optical lens group is HFOV, with the following values: f = 1.89 mm, Fno = 2.42, HFOV = 46.5 degrees.

[0146] The maximum field of view (FOV) in a photographic optical lens group satisfies the following condition: FOV = 92.9 degrees.

[0147] The distance on the optical axis from the object-side surface of the first lens E1 to the imaging plane IMG is TL, and the maximum imaging height of the photographic optical lens group is ImgH, which satisfies the following condition: TL / ImgH=1.10.

[0148] The focal length of the third lens E3 is f3, and the focal length of the fourth lens E4 is f4. They satisfy the following condition: f3 / f4 = -1.27.

[0149] The focal length of the photographic optical lens group is f, and the combined focal length of the first lens E1 and the second lens E2 is f12, which satisfies the following condition: f / f12=0.68.

[0150] The focal length of the photographic optical lens group is f, and the combined focal length of the third lens E3 and the fourth lens E4 is f34, which satisfies the following condition: f / f34=0.096.

[0151] The focal length of the photographic optical lens group is f, the radius of curvature of the object-side surface of the second lens E2 is R3, and the radius of curvature of the image-side surface of the second lens E2 is R4, which satisfies the following condition: |f / R3|+|f / R4|=0.65.

[0152] The radius of curvature of the image-side surface of the first lens E1 is R2, and the radius of curvature of the object-side surface of the second lens E2 is R3, which satisfies the following condition: (R2+R3) / (R2-R3)=-0.33.

[0153] The radius of curvature of the object-side surface of the third lens E3 is R5, and the radius of curvature of the image-side surface of the third lens E3 is R6, which satisfies the following condition: R5 / R6=2.48.

[0154] The radius of curvature of the image-side surface of the third lens E3 is R6, and the radius of curvature of the image-side surface of the fourth lens E4 is R8, which satisfies the following condition: R6 / R8=-0.79.

[0155] The thickness of the first lens E1 along the optical axis is CT1, and the thickness of the fourth lens E4 along the optical axis is CT4, which satisfies the following condition: CT1 / CT4 = 1.21.

[0156] The distance between the third lens E3 and the fourth lens E4 on the optical axis is T34, and the distance from the image-side surface of the fourth lens E4 to the imaging plane IMG on the optical axis is BL, which satisfies the following condition: T34 / BL = 1.64. In this embodiment, the distance between two adjacent lenses on the optical axis refers to the distance between two adjacent mirror surfaces of the two adjacent lenses on the optical axis.

[0157] The distance between the first lens E1 and the second lens E2 on the optical axis is T12, and the distance between the third lens E3 and the fourth lens E4 on the optical axis is T34, which satisfies the following condition: T34 / T12=3.78.

[0158] The distance on the optical axis from the object-side surface of the first lens E1 to the image-side surface of the fourth lens E4 is TD, and the distance on the optical axis between the first lens E1 and the second lens E2 is T12, which satisfies the following condition: TD / T12=10.95.

[0159] The distance on the optical axis from the object-side surface of the first lens E1 to the image-side surface of the fourth lens E4 is TD, and the distance on the optical axis between the second lens E2 and the third lens E3 is T23, which satisfies the following condition: TD / T23=16.32.

[0160] The distance on the optical axis from the object-side surface of the first lens E1 to the image-side surface of the fourth lens E4 is TD, and the thickness of the second lens E2 on the optical axis is CT2, which satisfies the following condition: TD / CT2=13.01.

[0161] The distance on the optical axis from the object-side surface of the first lens E1 to the image-side surface of the third lens E3 is Dr1r6, and the distance on the optical axis from the image-side surface of the third lens E3 to the image-side surface of the fourth lens E4 is Dr6r8, which satisfies the following condition: Dr1r6 / Dr6r8=1.13.

[0162] The maximum Abbe number among all lenses in the photographic optical group is Vmax, which satisfies the following condition: Vmax = 70.4. In this embodiment, the Abbe number of the first lens E1 is greater than the Abbe number of each of the other lenses in the photographic optical group, therefore Vmax is equal to the Abbe number of the first lens E1.

[0163] The minimum Abbe number among all lenses in the photographic optical group is Vmin, which satisfies the following condition: Vmin = 19.5. In this embodiment, the Abbe number of the second lens E2 is less than the Abbe number of each of the other lenses in the photographic optical group, therefore Vmin is equal to the Abbe number of the second lens E2.

[0164] The maximum effective radius of the object-side surface of the first lens E1 is Y1R1, and the maximum effective radius of the image-side surface of the fourth lens E4 is Y4R2, which satisfies the following condition: Y4R2 / Y1R1=3.94.

[0165] Please refer to Table 1A and Table 1B below.

[0166]

[0167]

[0168]

[0169] Table 1A is... Figure 1The first embodiment provides detailed structural data, where the units for radius of curvature, thickness, and focal length are millimeters (mm), and surfaces 0 to 12 sequentially represent surfaces from the object side to the image side. Table 1B shows the aspherical data in the first embodiment, where k is the conic coefficient in the aspherical curve equation, and A4 to A28 represent the 4th to 28th 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 1A and 1B of the first embodiment, and will not be repeated here.

[0170] <Second Embodiment>

[0171] Please refer to Figures 3 to 4 ,in Figure 3 A schematic diagram of an image-capturing device according to a second embodiment of this disclosure is shown. Figure 4 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the second embodiment. Figure 3 It is known that the image capturing device 2 includes a photographic optical lens group (unlabeled) and an electronic image sensor IS. The photographic optical lens group, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, an aperture stop S1, a second lens E2, a third lens E3, an aperture stop S2, a fourth lens E4, and an imaging surface IMG. The electronic image sensor IS is disposed on the imaging surface IMG. The photographic optical lens group comprises four lenses (E1, E2, E3, and E4), and there are no other interposed lenses between the lenses.

[0172] The first lens E1 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical, and its image-side surface has a point of inflection.

[0173] The second lens E2 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its image-side surface has a point of inflection and a critical point off-axis.

[0174] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface also has two inflection points.

[0175] The fourth lens E4 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface has four inflection points. Its object-side surface has a critical point off-axis, and its image-side surface has a critical point off-axis.

[0176] Please refer to Table 2A and Table 2B below.

[0177]

[0178]

[0179]

[0180] In the second embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in Table 2C below are the same as in the first embodiment and will not be repeated here.

[0181]

[0182] <Third Embodiment>

[0183] Please refer to Figures 5 to 6 ,in Figure 5 A schematic diagram of an image-capturing device according to a third embodiment of this disclosure is shown. Figure 6 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the third embodiment. Figure 5 It is known that the image capturing device 3 includes a photographic optical lens group (unlabeled) and an electronic image sensor IS. The photographic optical lens group, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, an aperture stop S1, a second lens E2, a third lens E3, an aperture stop S2, a fourth lens E4, and an imaging surface IMG. The electronic image sensor IS is disposed on the imaging surface IMG. The photographic optical lens group contains four lenses (E1, E2, E3, and E4), and there are no other interposed lenses between the lenses.

[0184] The first lens E1 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical, and its image-side surface has a point of inflection.

[0185] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both of its surfaces are aspherical. Its image-side surface has a point of inflection and a critical point off-axis.

[0186] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface also has two inflection points.

[0187] The fourth lens E4 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface has two inflection points. Its object-side surface has a critical point off-axis, and its image-side surface has a critical point off-axis.

[0188] Please refer to Table 3A and Table 3B below.

[0189]

[0190]

[0191]

[0192] In the third embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions described in Table 3C below are the same as in the first embodiment and will not be repeated here.

[0193]

[0194]

[0195] <Fourth Embodiment>

[0196] Please refer to Figures 7 to 8 ,in Figure 7 A schematic diagram of an image-capturing device according to the fourth embodiment of this disclosure is shown. Figure 8 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fourth embodiment. Figure 7 It is known that the image capturing device 4 includes a photographic optical lens group (unlabeled) and an electronic image sensor IS. The photographic optical lens group, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, an aperture stop S1, a second lens E2, a third lens E3, an aperture stop S2, a fourth lens E4, and an imaging surface IMG. The electronic image sensor IS is disposed on the imaging surface IMG. The photographic optical lens group contains four lenses (E1, E2, E3, E4), and there are no other interposed lenses between the lenses.

[0197] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical, and its image-side surface has a point of inflection.

[0198] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical, and its image-side surface has a point of inflection.

[0199] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface also has two inflection points.

[0200] The fourth lens E4 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has three inflection points, its image-side surface has three inflection points, its object-side surface has two critical points off-axis, and its image-side surface has one critical point off-axis.

[0201] Please refer to Table 4A and Table 4B below.

[0202]

[0203]

[0204]

[0205] In the fourth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions described in Table 4C below are the same as in the first embodiment and will not be repeated here.

[0206]

[0207] <Fifth Embodiment>

[0208] Please refer to Figures 9 to 10 ,in Figure 9 A schematic diagram of an image-capturing device according to the fifth embodiment of this disclosure is shown. Figure 10 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the fifth embodiment. Figure 9 It is known that the image capturing device 5 includes a photographic optical lens group (unlabeled) and an electronic image sensor IS. The photographic optical lens group, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, an aperture stop S1, a second lens E2, a third lens E3, an aperture stop S2, a fourth lens E4, and an imaging surface IMG. The electronic image sensor IS is disposed on the imaging surface IMG. The photographic optical lens group contains four lenses (E1, E2, E3, and E4), and there are no other interposed lenses between the lenses.

[0209] The first lens E1 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical, and its image-side surface has a point of inflection.

[0210] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both of its surfaces are aspherical. Its image-side surface has a point of inflection and a critical point off-axis.

[0211] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface also has two inflection points.

[0212] The fourth lens E4 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface has two inflection points. Its object-side surface has a critical point off-axis, and its image-side surface has a critical point off-axis.

[0213] Please refer to Table 5A and Table 5B below.

[0214]

[0215]

[0216]

[0217] In the fifth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions described in Table 5C below are the same as in the first embodiment and will not be repeated here.

[0218]

[0219] <Sixth Embodiment>

[0220] Please refer to Figures 11 to 12 ,in Figure 11 A schematic diagram of an image-capturing device according to the sixth embodiment of this disclosure is shown. Figure 12 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the sixth embodiment. Figure 11 It is known that the image capturing device 6 includes a photographic optical lens group (unlabeled) and an electronic image sensor IS. The photographic optical lens group, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, an aperture stop S1, a second lens E2, a third lens E3, an aperture stop S2, a fourth lens E4, and an imaging surface IMG. The electronic image sensor IS is disposed on the imaging surface IMG. The photographic optical lens group contains four lenses (E1, E2, E3, and E4), and there are no other interposed lenses between the lenses.

[0221] The first lens E1 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical, and its image-side surface has a point of inflection.

[0222] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its image-side surface has two inflection points, and its image-side surface has a critical point off-axis.

[0223] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface also has two inflection points.

[0224] The fourth lens E4 has negative refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points, its image-side surface has two inflection points, its object-side surface has two critical points off-axis, and its image-side surface has one critical point off-axis.

[0225] Please refer to Table 6A and Table 6B below.

[0226]

[0227]

[0228]

[0229] In the sixth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in Table 6C below are the same as in the first embodiment and will not be repeated here.

[0230]

[0231] <Seventh Embodiment>

[0232] Please refer to Figures 13 to 14 ,in Figure 13 A schematic diagram of an image-capturing device according to the seventh embodiment of this disclosure is shown. Figure 14 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the seventh embodiment. Figure 13It is known that the image capturing device 7 includes a photographic optical lens group (unlabeled) and an electronic image sensor IS. The photographic optical lens group, arranged sequentially from the object side to the image side along the light path, includes an aperture ST, a first lens E1, an aperture stop S1, a second lens E2, a third lens E3, an aperture stop S2, a fourth lens E4, a filter element E5, and an imaging surface IMG. The electronic image sensor IS is disposed on the imaging surface IMG. The photographic optical lens group contains four lenses (E1, E2, E3, E4), and there are no other interposed lenses between the lenses.

[0233] The first lens E1 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical, and its image-side surface has a point of inflection.

[0234] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical, and its image-side surface has a point of inflection.

[0235] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical. Its object-side surface has two inflection points, and its image-side surface also has two inflection points.

[0236] The fourth lens E4 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has three inflection points, its image-side surface has three inflection points, its object-side surface has two critical points off-axis, and its image-side surface has one critical point off-axis.

[0237] The filter element E5 is made of glass and is located between the fourth lens E4 and the imaging surface IMG. It does not affect the focal length of the photographic optical lens group.

[0238] Please refer to Table 7A and Table 7B below.

[0239]

[0240]

[0241]

[0242] In the seventh embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in Table 7C below are the same as in the first embodiment and will not be repeated here.

[0243]

[0244] <Eighth Embodiment>

[0245] Please refer to Figures 15 to 16 ,in Figure 15 A schematic diagram of an image-capturing device according to the eighth embodiment of this disclosure is shown. Figure 16 From left to right, the graphs show the spherical aberration, astigmatism, and distortion curves of the eighth embodiment. Figure 15 It is known that the image capturing device 8 includes a photographic optical lens group (unlabeled) and an electronic image sensor IS. The photographic optical lens group, arranged sequentially from the object side to the image side along the optical path, includes an aperture ST, a first lens E1, an aperture stop S1, a second lens E2, a third lens E3, an aperture stop S2, a fourth lens E4, and an imaging surface IMG. The electronic image sensor IS is disposed on the imaging surface IMG. The photographic optical lens group contains four lenses (E1, E2, E3, E4), and there are no other interposed lenses between the lenses.

[0246] The first lens E1 has positive refractive power and is made of glass. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both surfaces are aspherical, and its image-side surface has a point of inflection.

[0247] The second lens E2 has negative refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical, and its image-side surface has a point of inflection.

[0248] The third lens E3 has positive refractive power and is made of plastic. Its object-side surface is concave near the optical axis, and its image-side surface is convex near the optical axis. Both surfaces are aspherical, and its image-side surface has two inflection points.

[0249] The fourth lens E4 has positive refractive power and is made of plastic. Its object-side surface is convex near the optical axis, and its image-side surface is concave near the optical axis. Both of its surfaces are aspherical. Its object-side surface has three inflection points, and its image-side surface has five inflection points. Its object-side surface has two critical points off-axis, and its image-side surface has one critical point off-axis.

[0250] Please refer to Table 8A and Table 8B below.

[0251]

[0252]

[0253]

[0254] In the eighth embodiment, the equation for the aspherical curve is expressed as in the first embodiment. Furthermore, the definitions in Table 8C below are the same as in the first embodiment and will not be repeated here.

[0255]

[0256] <Ninth Embodiment>

[0257] Please refer to Figure 17 This is a perspective view illustrating an image-capturing device according to a ninth embodiment of the present disclosure. In this embodiment, the image-capturing device 100 is a camera module. The image-capturing device 100 includes an imaging lens 101, a driving device 102, an electronic photosensitive element 103, and an image stabilization module 104. The imaging lens 101 includes the photographic optical lens group of the first embodiment described above, a lens barrel (not otherwise labeled) for supporting the photographic optical lens group, and a support device (Holder Member, not otherwise labeled). The imaging lens 101 can also be replaced with photographic optical lens groups of other embodiments described above, and the present disclosure is not limited thereto. The image-capturing device 100 uses the imaging lens 101 to focus light to generate an image, and cooperates with the driving device 102 to focus the image, finally imaging it on the electronic photosensitive element 103 and outputting it as image data.

[0258] The driving device 102 may have an auto-focus function, and its driving method can use a driving system such as a voice coil motor (VCM), micro-electro-mechanical systems (MEMS), piezoelectric systems, and shape memory alloys. The driving device 102 enables the imaging lens 101 to achieve a better imaging position, allowing clear images to be captured of the subject at different object distances. In addition, the image capturing device 100 is equipped with a high-sensitivity and low-noise electronic image sensor 103 (such as CMOS or CCD) located on the imaging surface of the photographic optical lens group, which can truly present the good image quality of the photographic optical lens group.

[0259] The image stabilization module 104 may be, for example, an accelerometer, a gyroscope, or a Hall effect sensor. The drive unit 102 may work in conjunction with the image stabilization module 104 to form an optical image stabilization (OIS) device. By adjusting the changes in different axes of the imaging lens 101, it can compensate for the blurry image caused by shaking during shooting, or use image compensation technology in the imaging software to provide electronic image stabilization (EIS), further improving the image quality of shooting in dynamic and low-light scenes.

[0260] <Tenth Embodiment>

[0261] Please refer to Figures 18 to 20 ,in Figure 18 A perspective view of one side of an electronic device according to the tenth embodiment of this disclosure is shown. Figure 19 Draw Figure 18 A three-dimensional diagram of the other side of the electronic device, and Figure 20 Draw Figure 18 System block diagram of an electronic device.

[0262] In this embodiment, the electronic device 200 is a smartphone. The electronic device 200 includes, according to the ninth embodiment, image capturing devices 100a, 100b, 100c, 100d, and 100e, a flash module 201, a focus assist module 202, an image signal processor 203, a display module 204, and an image software processor 205. Image capturing devices 100, 100a, and 100b are all located on the same side of the electronic device 200 and are all single-focus. The focus assist module 202 may employ a laser rangefinder or a Time-of-Flight (ToF) module, but this disclosure is not limited thereto. Image capturing devices 100c, 100d, 100e, and display module 204 are all disposed on the other side of electronic device 200, and display module 204 can serve as a user interface, enabling image capturing devices 100c, 100d, and 100e to function as front-facing lenses for selfies, but this disclosure is not limited thereto. Furthermore, image capturing devices 100a, 100b, 100c, 100d, and 100e can all include the photographic optical lens group disclosed herein and can all have a structural configuration similar to that of image capturing device 100. Specifically, each of image capturing devices 100a, 100b, 100c, 100d, and 100e can include an imaging lens, a driving device, an electronic photosensitive element, and an image stabilization module, and each can include an optical path deflection element to deflect the optical path. The imaging lenses of imaging devices 100a, 100b, 100c, 100d, and 100e may each include, for example, the photographic optical lens group disclosed herein, a lens barrel for carrying the photographic optical lens group, and a support device.

[0263] Image capturing device 100 is a wide-angle image capturing device, image capturing device 100a is a telephoto image capturing device with optical path reversal, image capturing device 100b is an ultra-wide-angle image capturing device, image capturing device 100c is a wide-angle image capturing device, image capturing device 100d is an ultra-wide-angle image capturing device, and image capturing device 100e is a time-of-flight ranging image capturing device. In this embodiment, image capturing devices 100, 100a, and 100b have different viewing angles, allowing the electronic device 200 to provide different magnifications to achieve optical zoom shooting effects. Additionally, image capturing device 100e can acquire depth information of the image. The optical path reversal configuration of image capturing device 100a can, for example, have a similar... Figures 28 to 30 The structure can be referred to the aforementioned corresponding structure. Figures 28 to 30 The explanation will not be repeated here. Furthermore, the imaging devices 100, 100b, 100c, 100d, and 100e may also have an optical path reversal configuration, and may also have, for example, similar... Figures 28 to 30 The structure can be referred to the aforementioned corresponding structure. Figures 28 to 30 The above-described electronic device 200 is exemplified by including multiple image capturing devices 100, 100a, 100b, 100c, 100d, and 100e, but the number and configuration of the image capturing devices are not intended to limit this disclosure.

[0264] When the user photographs the subject 206, the electronic device 200 uses the image capturing device 100, image capturing device 100a, or image capturing device 100b to focus the light, activates the flash module 201 for supplemental lighting, and uses the subject distance information of the subject 206 provided by the focus assist module 202 for fast focusing. Furthermore, the image signal processor 203 performs image optimization processing to further improve the image quality produced by the photographic optical lens group. The focus assist module 202 can use an infrared or laser focus assist system to achieve fast focusing. In addition, the electronic device 200 can also use the image capturing device 100c, image capturing device 100d, or image capturing device 100e for shooting. The display module 204 can use a touch screen, combined with the diverse functions of the image software processor 205 for image capturing and image processing (or can use a physical shooting button). The image processed by the image software processor 205 can be displayed on the display module 204.

[0265] <Eleventh Embodiment>

[0266] Please refer to Figure 21 and Figure 22 ,in Figure 21 A schematic diagram showing one side of an electronic device according to the eleventh embodiment of this disclosure is provided. Figure 22 Draw Figure 21 A schematic diagram of the other side of the electronic device.

[0267] In this embodiment, the electronic device 300 is a smartphone. The electronic device 300 includes image-capturing devices 100, 100f, 100g, and 100h, as well as a display module 301, according to the ninth embodiment. Figure 21 As shown, image capturing devices 100, 100f, and 100g are all located on the same side of the electronic device 300 and are all single-focus. Figure 22 As shown, the image capturing device 100h and the display module 301 are both located on the other side of the electronic device 300. The image capturing device 100h can serve as a front-facing lens to provide a selfie function, but this disclosure is not limited thereto. Furthermore, the image capturing devices 100f, 100g, and 100h can all include the photographic optical lens group disclosed herein and can all have a structural configuration similar to that of the image capturing device 100. In detail, each of the image capturing devices 100f, 100g, and 100h can include an imaging lens, a driving device, an electronic photosensitive element, and an image stabilization module. The imaging lens of each of the image capturing devices 100f, 100g, and 100h can include, for example, the photographic optical lens group disclosed herein, a lens barrel for supporting the photographic optical lens group, and a support device.

[0268] Image capturing device 100 is a wide-angle image capturing device, image capturing device 100f is a telephoto image capturing device, image capturing device 100g is an ultra-wide-angle image capturing device, and image capturing device 100h is a wide-angle image capturing device. In this embodiment, image capturing devices 100, 100f, and 100g have different viewing angles, allowing the electronic device 300 to provide different magnifications to achieve optical zoom shooting effects. The above-described electronic device 300 is exemplified by including multiple image capturing devices 100, 100f, 100g, and 100h, but the number and configuration of the image capturing devices are not intended to limit this disclosure.

[0269] <Twelfth Embodiment>

[0270] Please refer to Figure 23 This is a perspective view illustrating one side of an electronic device according to the twelfth embodiment of this disclosure.

[0271] In this embodiment, the electronic device 400 is a smartphone. The electronic device 400 includes, according to the ninth embodiment, image capturing devices 100i, 100j, 100k, 100m, 100n, 100p, 100q, and 100r, a flash module 401, a focus assist module, an image signal processor, a display module, and an image software processor (not shown). Image capturing devices 100i, 100j, 100k, 100m, 100n, 100p, 100q, and 100r are all located on the same side of the electronic device 400, while the display module is located on the other side of the electronic device 400. Furthermore, the image capturing devices 100i, 100j, 100k, 100m, 100n, 100p, 100q, and 100r may all include the photographic optical lens group disclosed herein and may all have a structural configuration similar to that of the image capturing device 100, which will not be described in detail here.

[0272] Image capturing device 100 is a wide-angle image capturing device; image capturing device 100i is a telephoto image capturing device with a reversible optical path; image capturing device 100j is a telephoto image capturing device with a reversible optical path; image capturing device 100k is a wide-angle image capturing device; image capturing device 100m is an ultra-wide-angle image capturing device; image capturing device 100n is an ultra-wide-angle image capturing device; image capturing device 100p is a telephoto image capturing device; image capturing device 100q is a telephoto image capturing device; and image capturing device 100r is a time-of-flight ranging image capturing device. In this embodiment, image capturing devices 100, 100i, 100j, 100k, 100m, 100n, 100p, and 100q have different viewing angles, allowing the electronic device 400 to provide different magnification ratios to achieve optical zoom shooting effects. Furthermore, the image capturing device 100r can acquire depth information of the image. The optical path reversal configurations of the image capturing devices 100i and 100j can, for example, have similar... Figures 28 to 30 The structure can be referred to the aforementioned corresponding structure. Figures 28 to 30The description of the above-described electronic device 400 will not be repeated here. The electronic device 400 described above is exemplified by including multiple image capturing devices 100, 100i, 100j, 100k, 100m, 100n, 100p, 100q, and 100r, but the number and configuration of the image capturing devices are not intended to limit this disclosure. When a user photographs a subject, the electronic device 400 uses image capturing devices 100, 100i, 100j, 100k, 100m, 100n, 100p, 100q, or 100r to focus light and capture an image, activates the flash module 401 for supplemental lighting, and performs subsequent processing in a manner similar to the aforementioned embodiments, which will not be repeated here.

[0273] <Thirteenth Embodiment>

[0274] Please refer to Figures 24 to 25 ,in Figure 24 A perspective view of one side of an electronic device according to the thirteenth embodiment of this disclosure is shown, and Figure 25 Draw Figure 24 A three-dimensional diagram of the other side of the electronic device.

[0275] In this embodiment, the electronic device 500 is a folding mobile phone. The electronic device 500 includes, according to the ninth embodiment, image capturing devices 100, 100s, 100t, 100u, and 100v, a flash module 501, a display module 502, a display module 503, and a hinge mechanism 504. The display module 502 may, for example, include a flexible screen containing an organic light-emitting diode display, and the electronic device 500 can be unfolded or folded via the hinge mechanism 504. In this embodiment, the electronic device 500 is exemplified by having two opposing display modules 502 and 503, but the number and configuration of the display modules are not intended to limit this disclosure. In other embodiments, the electronic device may have only one display module, for example, and this single display module may, for example, include a display module with a flexible screen.

[0276] like Figure 24 As shown, the image capturing device 100v and the display module 502 are disposed on the same side of the electronic device 500. Figure 25 As shown, image capturing devices 100, 100s, 100t, 100u, flash module 501, and display module 503 are disposed on the other side of electronic device 500. Image capturing device 100v can serve as a front-facing lens to provide a selfie function, but this disclosure is not limited thereto. Furthermore, image capturing devices 100s, 100t, 100u, and 100v can all include the photographic optical lens group disclosed herein and can all have a structural configuration similar to that of image capturing device 100, which will not be described in detail here.

[0277] Image capturing device 100 is a wide-angle image capturing device, image capturing device 100s is a telephoto image capturing device with a reversible optical path, image capturing device 100t is an ultra-wide-angle image capturing device, image capturing device 100u is a time-of-flight ranging image capturing device, and image capturing device 100v is a wide-angle image capturing device. In this embodiment, image capturing devices 100, 100s, and 100t have different viewing angles, allowing the electronic device 500 to provide different magnifications to achieve optical zoom shooting effects. The reversible optical path configuration of image capturing device 100s can, for example, have a similar... Figures 28 to 30 The structure can be referred to the aforementioned corresponding structure. Figures 28 to 30 The description of the above-described electronic device 500 is given as an example, which includes multiple image capturing devices 100, 100s, 100t, 100u, and 100v, but the number and configuration of the image capturing devices are not intended to limit this disclosure. When a user photographs a subject, the electronic device 500 uses the image capturing device 100s, image capturing device 100t, image capturing device 100u, or image capturing device 100v to focus the light and capture the image, activates the flash module 501 for supplementary lighting, and performs subsequent processing in a manner similar to the aforementioned embodiments, which will not be described in detail here.

[0278] The image capturing device disclosed herein is not limited to smartphones. It can also be applied to mobile focusing systems as needed, offering excellent aberration correction and good image quality. For example, the image capturing device can be used in a wide range of electronic devices, including 3D image capture, digital cameras, mobile products, foldable phones, tablets, smart TVs, network monitoring equipment, dashcams, reversing cameras, multi-lens devices, recognition systems, motion-sensing game consoles, drones, wearable products, and personal video recorders. The aforementioned electronic devices are merely illustrative examples of practical applications of this disclosure and do not limit the scope of application of the image capturing device disclosed herein.

[0279] Although this disclosure is presented above with reference to the preferred embodiments described above, it is not intended to limit this disclosure. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of this disclosure. Therefore, the scope of patent protection of this disclosure shall be determined by the claims appended to this specification.

Claims

1. A photographic optical lens assembly, characterized in that, It includes four lenses. Along the optical path from the object side to the image side, the four lenses are, in sequence, the first lens, the second lens, the third lens, and the fourth lens. And the four lenses respectively have an object-side surface facing the object side direction and an image-side surface facing the image side direction; Among them, the first lens has a positive refractive power, the third lens has a positive refractive power. The object-side surface of the third lens is concave near the optical axis, the image-side surface of the third lens is convex near the optical axis. Both the object-side surface and the image-side surface of the third lens are aspherical surfaces, and at least one of the object-side surface and the image-side surface of the third lens has at least one inflection point; and Among them, the distance between the first lens and the second lens on the optical axis is T12, the distance between the third lens and the fourth lens on the optical axis is T34, the distance from the image-side surface of the fourth lens to an imaging plane on the optical axis is BL, the distance from the object-side surface of the first lens to the imaging plane on the optical axis is TL, the maximum imaging height of the photographic optical lens group is ImgH, 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 thickness of the first lens on the optical axis is CT1, the thickness of the fourth lens on the optical axis is CT4, and they satisfy the following conditions: 1.00 < T34 / BL < 10.00; 2.20 < T34 / T12; 0.50 < TL / ImgH < 1.30; 0.20 < R5 / R6 < 100.00; and 0.10 < CT1 / CT4 < 1.

70.

2. The photographic optical lens assembly according to claim 1, characterized in that, The object-side surface of the second lens is concave near the optical axis, the image-side surface of the second lens is convex near the optical axis, and the second lens has a negative refractive power.

3. The photographic optical lens assembly according to claim 1, characterized in that, The image-side surface of the first lens is concave near the optical axis, and the image-side surface of the fourth lens is concave near the optical axis.

4. The photographic optical lens assembly according to claim 1, characterized in that, The focal length of the photographic optical lens group is f, and the combined focal length of the first lens and the second lens is f12, and they satisfy the following conditions: 0.10 < f / f12 < 0.

95.

5. The photographic optical lens assembly according to claim 1, characterized in that, The distance from the object-side surface of the first lens to the image-side surface of the third lens on the optical axis is Dr1r6, the distance from the image-side surface of the third lens to the image-side surface of the fourth lens on the optical axis is Dr6r8, and they satisfy the following conditions: 0.20 < Dr1r6 / Dr6r8 < 1.

60.

6. The photographic optical lens assembly according to claim 1, characterized in that, The distance from the object-side surface of the first lens to the image-side surface of the fourth lens on the optical axis is TD, 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, and they satisfy the following conditions: 2.00 < TD / T12 < 30.00; and 2.00 < TD / T23 < 50.

00.

7. The photographic optical lens assembly according to claim 1, characterized in that, The radius of curvature of the image-side surface of the third lens is R6, the radius of curvature of the image-side surface of the fourth lens is R8, the distance on the optical axis from the object-side surface of the first lens to the image-side surface of the fourth lens is TD, and the distance on the optical axis between the first lens and the second lens is T12, which satisfy the following conditions: -1.65 < R6 / R8 < 1.00; and 5.00 < TD / T12 < 11.

00.

8. The photographic optical lens assembly according to claim 1, characterized in that, The maximum Abbe number among all the lenses of the photographic optical lens group is Vmax, which satisfies the following conditions: 70.0 < Vmax < 90.

0.

9. The photographic optical lens assembly according to claim 1, characterized in that, The maximum effective radius of the object-side surface of the first lens is Y1R1, and the maximum effective radius of the image-side surface of the fourth lens is Y4R2, which satisfy the following conditions: 3.30 < Y4R2 / Y1R1 < 9.

50.

10. The photographic optical lens assembly according to claim 1, characterized in that, The distance on the optical axis between the first lens and the second lens is T12, the distance on the optical axis between the third lens and the fourth lens is T34, the distance on the optical axis from the image-side surface of the fourth lens to the imaging surface is BL, the distance on the optical axis from the object-side surface of the first lens to the imaging surface is TL, the maximum imaging height of the photographic optical lens group is ImgH, 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 radius of curvature of the image-side surface of the fourth lens is R8, the thickness of the first lens on the optical axis is CT1, the thickness of the fourth lens on the optical axis is CT4, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the distance on the optical axis from the object-side surface of the first lens to the image-side surface of the third lens is Dr1r6, and the distance on the optical axis from the image-side surface of the third lens to the image-side surface of the fourth lens is Dr6r8, which satisfy the following conditions: 1.05 ≤ T34 / BL ≤ 2.45; 2.76 ≤ T34 / T12 ≤ 4.96; 1.07 ≤ TL / ImgH ≤ 1.21; 1.50 ≤ R5 / R6 ≤ 2.86; 0.45 ≤ CT1 / CT4 ≤ 1.30; -3.04 ≤ R6 / R8 ≤ -0.79; -1.66 ≤ f3 / f4 ≤ 0.15; and 0.76 ≤ Dr1r6 / Dr6r8 ≤ 1.

24.

11. An image capturing device, characterized in that, Comprising: The photographic optical lens group according to claim 1; and An electronic photosensitive element disposed on the imaging surface of the photographic optical lens group.

12. An electronic device, characterized in that, Comprising: The imaging device according to claim 11.

13. A photographic optical lens assembly, characterized in that, Comprising four lenses, and the four lenses are sequentially a first lens, a second lens, a third lens, and a fourth lens along the optical path from the object side to the image side, and the four lenses respectively have an object-side surface facing the object side and an image-side surface facing the image side; Among them, the first lens has a positive refractive power, the image-side surface of the second lens is convex near the optical axis, the third lens has a positive refractive power, the object-side surface of the third lens is concave near the optical axis, the image-side surface of the third lens is convex near the optical axis, both the object-side surface and the image-side surface of the third lens are aspherical surfaces, and at least one of the object-side surface and the image-side surface of the third lens has at least one inflection point; and Among them, the distance between the first lens and the second lens on the optical axis is T12, the distance between the third lens and the fourth lens on the optical axis is T34, the distance from the object-side surface of the first lens to an imaging surface on the optical axis is TL, the maximum imaging height of the photographic optical lens group is ImgH, the radius of curvature of the image-side surface of the third lens is R6, the radius of curvature of the image-side surface of the fourth lens is R8, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the distance from the object-side surface of the first lens to the image-side surface of the third lens on the optical axis is Dr1r6, and the distance from the image-side surface of the third lens to the image-side surface of the fourth lens on the optical axis is Dr6r8, which satisfy the following conditions: 2.20 < T34 / T12; 0.50 < TL / ImgH < 1.40; -1.70 < R6 / R8; -2.50 < f3 / f4 < 10.00; and 0.20 < Dr1r6 / Dr6r8 < 2.

00.

14. The photographic optical lens assembly according to claim 13, characterized in that, The object-side surface of the fourth lens is convex near the optical axis, The radius of curvature of the image-side surface of the first lens is R2, and the radius of curvature of the object-side surface of the second lens is R3, which satisfy the following conditions: (R2 + R3) / (R2 - R3) < 0.

40.

15. The photographic optical lens assembly according to claim 13, characterized in that, The minimum Abbe number among all the lenses of the photographic optical lens group is Vmin, which satisfies the following conditions: 5.0 < Vmin < 21.

0.

16. The photographic optical lens assembly according to claim 13, characterized in that, The maximum viewing angle of the photographic optical lens group is FOV, which satisfies the following conditions: 70 degrees < FOV < 110 degrees.

17. The photographic optical lens assembly according to claim 13, characterized in that, The distance from the object-side surface of the first lens to the image-side surface of the third lens on the optical axis is Dr1r6, the distance from the image-side surface of the third lens to the image-side surface of the fourth lens on the optical axis is Dr6r8, the focal length of the third lens is f3, and the focal length of the fourth lens is f4, which satisfy the following conditions: 0.50 < Dr1r6 / Dr6r8 < 1.40; and -2.30 < f3 / f4 < 0.

60.

18. The photographic optical lens assembly according to claim 13, characterized in that, The focal length of the photographic optical lens group is f, 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: 0.01 < |f / R3| + |f / R4| < 3.

00.

19. The photographic optical lens assembly according to claim 13, characterized in that, The focal length of the photographic optical lens group is f, and the combined focal length of the third lens and the fourth lens is f34, which satisfy the following conditions: -0.500 < f / f34 < 0.

900.

20. The photographic optical lens assembly according to claim 13, characterized in that, The distance between the third lens and the fourth lens on the optical axis is T34, the distance from the image-side surface of the fourth lens to the imaging surface on the optical axis is BL, the distance from the object-side surface of the first lens to the image-side surface of the fourth lens on the optical axis is TD, and the thickness of the second lens on the optical axis is CT2, which satisfy the following conditions: 1.00 < T34 / BL < 10.00; and 10.50 < TD / CT2.

Images