TWI886752B - Optical imaging lens, imaging device and electronic device - Google Patents

Abstract

An optical imaging lens including a first lens element, a second lens element, a third lens element, an aperture, a fourth lens element, a fifth lens element, and a sixth lens element arranged in sequence from an object side to an image side along an optical axis is provided. The optical imaging lenses include, from an object side to an image side, the first lens having negative refractive power and including an object-side surface being convex and an image-side surface being concave, the second lens having negative refractive power and including an object-side surface being concave and an image-side surface being convex, the third lens having positive refractive power and including an object-side surface being convex and an image-side surface being convex, the aperture, the forth lens having positive refractive power and including an object-side surface being convex and an image-side surface being convex, the fifth lens having negative refractive power and including an object-side surface being concave and an image-side surface being concave, and the sixth lens having positive refractive power and including an object-side surface being convex and an image-side surface being concave. The optical imaging lenses include a total of six elements.

Description

Optical photographic lens assembly, imaging device and electronic device

The present invention relates to an optical camera lens set and an imaging device, in particular to an optical camera lens set that can be used in general electronic devices, vehicle electronic devices or driving photography devices, and an imaging device and an electronic device having the optical camera lens set.

With the advancement of semiconductor manufacturing technology, the image sensing components of camera devices (such as CCD and CMOS Image Sensor) can meet the requirements of miniaturization, thus improving the manufacturing convenience of miniaturized cameras, driving the trend of digital electronic products to be equipped with miniaturized cameras to provide image shooting functions. However, in addition to responding to the trend of miniaturization, camera devices are also developing towards higher resolution, higher lens specifications, such as large aperture ratio, large field of view, and lower manufacturing costs to meet consumer needs.

With the diversified development of electronic imaging devices, their application scope is becoming more and more extensive, such as advanced driver assistance systems (ADAS), dashcams, home surveillance cameras, smart phones and human-machine interactive devices, etc., and the design requirements of optical lenses are becoming more diverse. As for automotive cameras, in order to clearly identify obstacles around the vehicle or vehicles coming from both sides, it is necessary to improve the resolution and brightness of the optical lens, and at the same time require visibility of visible light during the day and infrared light at night, and high adaptability to ambient temperature. In addition, in order to properly correct various aberrations, especially for distance measurement or object recognition purposes, if there is a large distortion aberration in the captured image, errors will easily occur when calculating the distance or image recognition.

Therefore, how to design an optical imaging device to achieve a balance between miniaturization, high resolution and good optical imaging quality has become the goal of researchers in this technical field.

Therefore, in order to solve the above problems, the present invention provides an optical photographic lens set, which includes, from the object side to the image side, a first lens having negative refractive power, a convex object side surface, and a concave image side surface; a second lens having negative refractive power, a concave object side surface, and a convex image side surface; a third lens having positive refractive power, a convex object side surface, and a convex image side surface; an aperture; a fourth lens having positive refractive power, a convex object side surface, and a convex image side surface; a fifth lens having negative refractive power, a concave object side surface, and a concave image side surface; A sixth lens having positive refractive power, a convex object side surface and a concave image side surface; wherein the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the thickness of the second lens is CT2, the thickness of the third lens is CT3, the thickness of the fourth lens is CT4, and the thickness of the fifth lens is CT5, satisfying the following relationship: -1.5 < (f4+f5)/(CT4+CT5) < -0.09; and -3.5 < (f2+f3)/(CT2+CT3) < -1.3.

The present invention further provides an optical photographic lens set, which comprises, from the object side to the image side, a first lens having negative refractive power, a convex object side surface, and a concave image side surface; a second lens having negative refractive power, a concave object side surface, and a convex image side surface; a third lens having positive refractive power, a convex object side surface, and a convex image side surface; an aperture; a fourth lens having positive refractive power, a convex object side surface, and a convex image side surface; a fifth lens having negative refractive power, a concave object side surface, and a concave image side surface; a sixth lens having positive refractive power, whose object side surface is convex and whose image side surface is concave; wherein the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the thickness of the second lens is CT2, the thickness of the third lens is CT3, and the focal length of the optical lens assembly is EFL, which satisfies the following relationship: -1.2 < (f4+f5)/EFL < -0.1; and -3.5 < (f2+f3)/(CT2+CT3) < -1.3.

According to an embodiment of the present invention, the focal length of the second lens is f2, the focal length of the third lens is f3, and the focal length of the optical lens assembly is EFL, which satisfies the following relationship: -2.9 < (f2+f3)/EFL < -1.

According to an embodiment of the present invention, the radius of curvature of the object surface of the second lens is R3, the radius of curvature of the image surface of the second lens is R4, and the focal length of the second lens is f2, which satisfies the following relationship: 0.5 < (R3+R4)/f2 < 1.4.

According to an embodiment of the present invention, the air interval between the second lens and the third lens is AT23, and the focal length of the optical lens assembly is EFL, which satisfies the following relationship: 0.01 < AT23/EFL < 0.04.

According to an embodiment of the present invention, the total length of the optical camera lens set is TTL, and the air interval between the fifth lens and the sixth lens is AT56, which satisfies the following relationship: 13 ＜ TTL/AT56 ＜ 28.

According to an embodiment of the present invention, the thickness of the second lens is CT2, the thickness of the third lens is CT3, and the air interval from the second lens to the third lens is AT23, which satisfies the following relationship: 14 < (CT3-CT2)/AT23 < 30.

According to an embodiment of the present invention, the total length of the optical camera lens set is TTL, and the air interval from the second lens to the third lens is AT23, which satisfies the following relationship: 155 ＜ TTL/AT23 ＜305.

According to an embodiment of the present invention, the air interval between the fifth lens and the sixth lens is AT56, and the focal length of the optical lens assembly is EFL, which satisfies the following relationship: 0.19 < AT56/EFL < 0.4.

According to an embodiment of the present invention, the combined focal length of the fourth lens to the sixth lens is f456, the focal length of the first lens is f1, the focal length of the second lens is f2, and the focal length of the third lens is f3, which satisfies the following relationship: -0.9 < f456/(f1+f2+f3) < -0.4.

According to an embodiment of the present invention, the focal length of the second lens is f2, and the focal length of the optical lens assembly is EFL, which satisfies the following relationship: -5.5 < f2/EFL < -2.7.

According to an embodiment of the present invention, the focal length of the fifth lens is f5, and the focal length of the optical lens assembly is EFL, which satisfies the following relationship: -2.5 < f5/EFL < -1.2.

According to an embodiment of the present invention, the radius of curvature of the object surface of the second lens is R3, and the focal length of the second lens is f2, which satisfies the following relationship: 0.19 < R3/f2 < 0.4.

According to an embodiment of the present invention, the focal length of the first lens is f1, the focal length of the second lens is f2, and the focal length of the optical lens assembly is EFL, which satisfies the following relationship: -7 < (f1+f2)/EFL < -4.

According to an embodiment of the present invention, the combined focal length of the fourth lens to the sixth lens is f456, and the total length of the optical camera lens set is TTL, which satisfies the following relationship: 0.3 < f456/TTL < 0.5.

The present invention further provides an imaging device, which includes the optical imaging lens set as described above, and an image sensing element, wherein the image sensing element is disposed on the imaging surface of the optical imaging lens set.

The present invention further provides an electronic device, which includes the imaging device as described above.

In the following embodiments, each lens of the optical photographic lens set can be made of glass or plastic, but is not limited to the materials listed in the embodiments. When the lens material is glass, the lens surface can be processed by grinding or molding; in addition, due to the temperature change resistance and high hardness of the glass material itself, the impact of environmental changes on the optical photographic lens set can be reduced, thereby extending the service life of the optical photographic lens set. When the lens material is plastic, it is beneficial to reduce the weight of the optical photographic lens set and reduce production costs.

In the embodiment of the present invention, each lens includes an object side facing the object being photographed and an image side facing the imaging plane. The surface shape of each lens is defined according to the shape of the surface in the region near the optical axis (near axis). For example, when the object side of a lens is described as convex, it means that the object side of the lens in the region near the optical axis is convex. That is, although the lens surface is described as convex in the embodiment, the surface may be convex or concave in the region far from the optical axis (off axis). The shape of each lens near the axis is determined by whether the radius of curvature of the surface is positive or negative. For example, if the radius of curvature of the object side of a lens is positive, the object side is convex; conversely, if the radius of curvature is negative, the object side is concave. For the image side of a lens, if the radius of curvature is positive, the image side is concave; conversely, if the radius of curvature is negative, the image side is convex.

In the embodiment of the present invention, the object side and image side of each lens can be spherical or aspherical surfaces. Using an aspherical surface on a lens helps to correct imaging aberrations of an optical photographic lens set such as spherical aberration, and reduces the number of optical lens elements used. However, the use of an aspherical lens will increase the cost of the entire optical photographic lens set. Although in the embodiment of the present invention, some optical lens surfaces use spherical surfaces, they can still be designed as aspherical surfaces as needed; or, some optical lens surfaces use aspherical surfaces, but they can still be designed as spherical surfaces as needed.

In the embodiment of the present invention, the total track length TTL (Total Track Length) of the optical imaging lens set is defined as the distance from the object side of the first lens of the optical imaging lens set to the imaging plane on the optical axis. The imaging height of the optical imaging lens set is called the maximum image height ImgH (Image Height); when an image sensing element is set on the imaging plane, the maximum image height ImgH represents half of the diagonal length of the effective sensing area of the image sensing element. In the following embodiments, the units of the curvature radius of all lenses, lens thickness, distance between lenses, total track length TTL of the lens set, maximum image height ImgH and focal length (Focal Length) are all expressed in millimeters (mm).

The present invention provides an optical photographic lens set, which includes a first lens, a second lens, a third lens, an aperture, a fourth lens, a fifth lens and a sixth lens in order from the object side to the image side.

The first lens has negative refractive power, its object side surface is convex, and its image side surface is concave. Preferably, the material of the first lens can be glass to be suitable for environmental conditions with large temperature differences. In the embodiment of the present invention, the object side surface and/or the image side surface of the first lens can be spherical to reduce manufacturing costs and facilitate processing.

The second lens has negative refractive power, and its object side surface can be concave, while its image side surface is convex. Preferably, the material of the second lens is plastic to reduce manufacturing cost and facilitate processing. In the embodiment of the present invention, the object side surface and/or the image side surface of the second lens can be aspherical, which will help improve spherical aberration.

The third lens may be of positive refractive power, with a convex object side and a convex image side. Preferably, the third lens may be made of plastic to reduce manufacturing costs and facilitate processing. In the embodiment of the present invention, the object side and/or image side of the third lens may be aspherical, which will help improve spherical aberration.

The fourth lens may have positive refractive power, and its object side surface may be convex, and its image side surface may be convex; preferably, the material of the fourth lens may be plastic to reduce manufacturing cost and facilitate processing. In the embodiment of the present invention, the object side surface and/or the image side surface of the fourth lens may be aspherical, which will help improve spherical aberration.

The fifth lens may have negative refractive power, and its object side surface may be concave, and its image side surface may be concave; preferably, the material of the fifth lens may be plastic to reduce manufacturing cost and facilitate processing. In the embodiment of the present invention, the object side surface and/or the image side surface of the fifth lens may be aspherical, which will help improve spherical aberration.

The sixth lens may have positive refractive power, its object side surface may be convex, and its image side surface may be concave; preferably, the material of the sixth lens may be plastic to reduce manufacturing cost and facilitate processing. In the embodiment of the present invention, the object side surface and/or the image side surface of the sixth lens may be aspherical, which will help improve spherical aberration.

The focal length of the fourth lens of the optical lens set is f4, the focal length of the fifth lens is f5, the thickness of the fourth lens is CT4, and the thickness of the fifth lens is CT5, which satisfies the following relationship: -1.5 < (f4+f5)/(CT4+CT5) < -0.09 (1).

When the relation (1) is satisfied, the optical path difference of the optical system can be reduced and the imaging quality can be improved.

The focal length of the fourth lens of the optical photographic lens set is f4, the focal length of the fifth lens is f5, and the focal length of the optical lens set is EFL, which satisfies the following relationship: -1.2 < (f4+f5)/EFL < -0.1 (2).

When equation (2) is satisfied, the ratio between the focal lengths of the fourth lens and the fifth lens and the effective focal length EFL of the entire optical imaging lens set can be controlled to be maintained within an appropriate range, which is beneficial for reducing the size of the optical imaging lens set while maintaining good optical performance.

The focal length of the second lens of the optical photographic lens set is f2, the focal length of the third lens is f3, the thickness of the second lens is CT2, and the thickness of the third lens is CT3, which satisfies the following relationship: -3.5 < (f2+f3)/(CT2+CT3) < -1.3 (3).

When the relation (3) is satisfied, the variation trend of the spherical aberration and chromatic aberration of the optical system can be effectively controlled, thereby reducing the difficulty of correcting the spherical aberration and chromatic aberration of the optical system.

The focal length of the second lens of the optical photographic lens set is f2, the focal length of the third lens is f3, and the focal length of the optical lens set is EFL, which satisfies the following relationship: -2.9 < (f2+f3)/EFL < -1 (4).

When the relation (4) is satisfied, the refractive power of the second lens and the third lens can be adjusted to correct the aberration.

The curvature radius of the object surface of the second lens of the optical photographic lens set is R3, the curvature radius of the image surface of the second lens is R4, and the focal length of the second lens is f2, which satisfies the following relationship: 0.5 < (R3+R4)/f2 < 1.4 (5).

When the relation (5) is satisfied, the surface shape and refractive power of the second lens can be adjusted, which helps to compress the side volume of the optical imaging lens assembly.

The air interval between the second lens and the third lens of the optical photographic lens set is AT23, and the focal length of the optical lens set is EFL, which satisfies the following relationship: 0.01 < AT23/EFL < 0.04 (6).

When the relation (6) is satisfied, the lens distribution can be adjusted, which helps to balance the volume distribution of the imaging system lens assembly.

The total length of the optical photographic lens set is TTL, and the air interval between the fifth lens and the sixth lens is AT56, which satisfies the following relationship: 13 < TTL/AT56 < 28 (7).

When the relation (7) is satisfied, the fifth lens and the sixth lens can have an appropriate distance on the optical axis, which is beneficial to control the total length of the optical imaging lens set.

The thickness of the second lens of the optical photographic lens set is CT2, the thickness of the third lens is CT3, and the air interval from the second lens to the third lens is AT23, which satisfies the following relationship: 14 < (CT3-CT2)/AT23 < 30 (8).

When relation (8) is satisfied, the second lens and the third lens can cooperate with each other, which helps to achieve a balance between aperture size and volume distribution.

The total length of the optical photographic lens set is TTL, and the air interval from the second lens to the third lens is AT23, which satisfies the following relationship: 155 < TTL/AT23 < 305 (9).

When the relation (9) is satisfied, the second lens and the third lens can have an appropriate distance on the optical axis, which is beneficial to control the total length of the optical imaging lens set.

The air interval between the fifth lens and the sixth lens of the optical photographic lens set is AT56, and the focal length of the optical lens set is EFL, which satisfies the following relationship: 0.19 < AT56/EFL < 0.4 (10).

When the relationship (10) is satisfied, the lens distribution can be adjusted, which helps to balance the volume distribution of the imaging system lens assembly.

The combined focal length of the fourth lens to the sixth lens of the optical photographic lens set is f456, the focal length of the first lens is f1, the focal length of the second lens is f2, and the focal length of the third lens is f3, which satisfies the following relationship: -0.9 < f456/(f1+f2+f3) < -0.4 (11).

When relation (11) is satisfied, the fourth to sixth lenses can cooperate with each other to compress the volume and correct the aberration.

The focal length of the second lens of the optical photographic lens set is f2, and the focal length of the optical lens set is EFL, which satisfies the following relationship: -5.5 < f2/EFL < -2.7 (12).

When the relation (12) is satisfied, the refractive power of the second lens can be adjusted to correct the aberration.

The focal length of the fifth lens of the optical photographic lens set is f5, and the focal length of the optical lens set is EFL, which satisfies the following relationship: -2.5 < f5/EFL < -1.2 (13).

When the relationship (13) is satisfied, the fifth lens placed behind the aperture can have an appropriate positive refractive power, which helps to converge light and control the size of the optical lens.

The radius of curvature of the object surface of the second lens of the optical photographic lens set is R3, and the focal length of the second lens is f2, which satisfies the following relationship: 0.19 < R3/f2 < 0.4 (14).

When the relation (14) is satisfied, it is beneficial to correct the aberration.

The focal length of the first lens of the optical photographic lens set is f1, the focal length of the second lens is f2, and the focal length of the optical lens set is EFL, which satisfies the following relationship: -7 < (f1+f2)/EFL < -4 (15).

When the relation (15) is satisfied, the refractive power of the first lens and the second lens can be adjusted to correct the aberration.

The combined focal length of the fourth lens to the sixth lens of the optical photographic lens set is f456, and the total length of the optical photographic lens set is TTL, which satisfies the following relationship: 0.3 ＜ f456/TTL ＜ 0.5 (16).

When the relation (16) is satisfied, the overall refractive power of the fourth lens to the sixth lens can be adjusted, which helps to strike a balance between reducing the size of chromatic aberration and the total length of the lens.

1A and 1B , FIG. 1A is a schematic diagram of an optical photographic lens assembly of the first embodiment of the present invention. FIG. 1B is, from left to right, a diagram of astigmatism/field curvature, a diagram of f-θ distortion, and a diagram of longitudinal spherical aberration of the first embodiment of the present invention.

As shown in FIG1A , the optical photographic lens set 10 of the first embodiment includes a first lens 11, a second lens 12, a third lens 13, an aperture ST, a fourth lens 14, a fifth lens 15, and a sixth lens 16 in order from the object side to the image side. The optical photographic lens set 10 may further include a filter element 17 and an imaging surface 101. An image sensing element 102 may be further disposed on the imaging surface 101 to form an imaging device (not separately labeled).

The first lens 11 has negative refractive power, and its object side surface 11a is convex, and its image side surface 11b is concave, and both the object side surface 11a and the image side surface 11b are spherical. The material of the first lens 11 includes glass, but is not limited thereto.

The second lens 12 has negative refractive power, and its object side surface 12a is concave; its image side surface 12b can be convex, and both the object side surface 12a and the image side surface 12b are aspherical. The material of the second lens 12 includes plastic, but is not limited thereto.

The third lens 13 has positive refractive power, and its object side surface 13a is convex, and its image side surface 13b is convex, and both the object side surface 13a and the image side surface 13b are aspherical. The material of the third lens 13 includes glass, but is not limited thereto.

The fourth lens 14 has positive refractive power, and its object side surface 14a is convex, and its image side surface 14b is convex, and both the object side surface 14a and the image side surface 14b are aspherical. The material of the fourth lens 14 includes plastic, but is not limited thereto.

The fifth lens 15 has negative refractive power, and its object side surface 15a is concave, and its image side surface 15b is concave, and both the object side surface 15a and the image side surface 15b are aspherical. The material of the fifth lens 15 includes plastic, but is not limited thereto.

The sixth lens 16 has positive refractive power, and its object side surface 16a is convex, and its image side surface 16b is concave, and both the object side surface 16a and the image side surface 16b are aspherical. The material of the sixth lens 16 includes plastic, but is not limited thereto.

The filter element 17 is disposed between the sixth lens 16 and the imaging surface 101 to filter light of a specific wavelength range to allow the required wavelength to pass through, for example, an ultraviolet and far infrared light filter element to allow visible light and infrared light of a specified wavelength to pass through. The two surfaces 17a and 17b of the filter element 17 are both planes, and the material thereof is glass.

The image sensor 102 is, for example, a charge-coupled device (CCD) image sensor or a complementary metal oxide semiconductor image sensor (CMOS image sensor).

The curve equations of the above-mentioned aspheric surfaces are expressed as follows: Where, X: the distance between the point on the aspheric surface at a distance Y from the optical axis and the tangent plane of the aspheric surface on the optical axis; Y: the perpendicular distance between the point on the aspheric surface and the optical axis; C: the reciprocal of the radius of curvature of the lens near the optical axis; K: the cone coefficient; and Ai: the i-th order aspheric coefficient, where i = 2x, and x is a natural number greater than or equal to 2, that is, i is an even number greater than or equal to 4.

Please refer to Table 1 below, which is the detailed optical data of the optical photographic lens set 10 of the first embodiment of the present invention. Among them, the object side surface 11a of the first lens 11 is marked as surface 11a, the image side surface 11b is marked as surface 11b, and the other lens surfaces are similar. The value of the distance column in the table represents the distance from the surface to the next surface on the optical axis I. For example, the distance from the object side surface 11a of the first lens 11 to the image side surface 11b is 0.691 mm, which means that the thickness of the first lens 11 is 0.691 mm. The distance AT12 from the image side surface 11b of the first lens 11 to the object side surface 12a of the second lens 12 is 3.119 mm. The same can be said for other cases, which will not be repeated below. In the first embodiment, the effective focal length of the optical camera lens set 10 is EFL, and the maximum half field of view angle of the entire optical camera lens set 10 is HFOV (Half Field of View), and its values are also listed in Table 1. First Embodiment TTL=14.54mm,EFL=2.78mm,FNO=2.4,HFOV=78° surface Surface type Radius of curvature (mm) Distance(mm) Refractive Index Dispersion coefficient Focal length(mm) Subject flat Infinity First lens 11a Spherical 13.861 0.691 1.729 54.7 -4.42 11b Spherical 2.567 3.119 Second lens 12a Aspheric -2.755 0.401 1.537 56.0 -8.02 12b Aspheric -7.989 0.048 Third lens 13a Aspheric 8.955 1.837 1.810 45.0 4.65 13b Aspheric -5.879 0.080 aperture ST flat Infinity 0.771 Fourth lens 14a Aspheric 2.946 1.805 1.537 56.0 3.31 14b Aspheric -3.554 0.140 Fifth lens 15a Aspheric -2.780 0.506 1.661 24.4 -3.64 15b Aspheric 20.424 0.945 Sixth lens 16a Aspheric 4.497 2.290 1.537 56.0 11.90 16b Aspheric 12.407 0.113 Filter elements 17a flat Infinity 0.400 1.517 64.2 inf 17b flat Infinity 1.392 Imaging surface 101 flat Infinity 0.000 Reference wavelength: 550nm Table 1

Please refer to Table 2 below, which is the aspheric coefficient of each lens surface of the first embodiment of the present invention. Among them, K is the cone coefficient in the aspheric curve equation, and _A4 to _A16 represent the 4th to 16th order aspheric coefficients of each surface. For example, the cone coefficient K of the object side surface 12a of the first lens 12 is -5.11E+00. The same can be said for the others, which will not be repeated below. In addition, the tables of the following embodiments correspond to the optical photography lens set of each embodiment, and the definitions of each table are the same as those of this embodiment, so they will not be repeated in the following embodiments. Aspheric coefficient of the first embodiment 12a 12b 13a 13b 14a 14b 15a 15b 16a 16b K -5.11E+00 -2.58E+01 -3.72E+00 6.46E+00 -4.57E+00 -2.85E-01 5.24E-01 1.26E+02 -1.19E+01 -7.86E+01 A4 1.69E-04 9.82E-03 -1.23E-02 -7.11E-03 7.36E-03 -1.39E-02 4.15E-02 4.25E-02 4.03E-03 -5.59E-03 A6 1.14E-04 -1.12E-03 4.03E-04 8.26E-04 -1.82E-03 1.69E-03 -1.19E-02 -7.20E-03 -1.56E-04 2.28E-04 A8 -1.78E-04 -2.55E-05 -2.78E-04 2.37E-04 -2.20E-04 -4.14E-04 2.04E-03 -1.36E-04 6.14E-06 1.26E-05 A10 1.42E-05 -5.26E-05 -5.20E-05 -4.86E-05 3.58E-05 1.48E-04 7.84E-05 1.09E-04 -1.09E-07 -8.28E-07 A12 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A16 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Table 2

In the first embodiment, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the thickness of the fourth lens is CT4, the thickness of the fifth lens is CT5, and (f4+f5)/(CT4+CT5) = -0.143.

In the first embodiment, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the optical lens assembly is EFL, (f4+f5)/EFL = -0.119.

In the first embodiment, the focal length of the second lens is f2, the focal length of the third lens is f3, the thickness of the second lens is CT2, the thickness of the third lens is CT3, and (f2+f3)/(CT2+CT3) = -1.505.

In the first embodiment, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the optical lens assembly is EFL, and (f2+f3)/EFL = -1.212.

In the first embodiment, the radius of curvature of the object surface of the second lens is R3, the radius of curvature of the image surface of the second lens is R4, the focal length of the second lens is f2, and (R3+R4)/f2 = 1.340.

In the first embodiment, the air interval from the second lens to the third lens is AT23, the focal length of the optical lens assembly is EFL, and AT23/EFL = 0.017.

In the first embodiment, the total length of the optical photographic lens set is TTL, the air interval between the fifth lens and the sixth lens is AT56, and TTL/AT56 = 15.380.

In the first embodiment, the thickness of the second lens is CT2, the thickness of the third lens is CT3, and the air interval from the second to the third lens is AT23, (CT3-CT2)/AT23 = 29.939.

In the first embodiment, the total length of the optical photographic lens set is TTL, the air interval from the second lens to the third lens is AT23, and TTL/AT23 = 303.202.

In the first embodiment, the air interval between the fifth lens and the sixth lens is AT56, the focal length of the optical lens assembly is EFL, and AT56/EFL = 0.340.

In the first embodiment, the combined focal length of the fourth lens to the sixth lens is f456, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, and f456/(f1+f2+f3) = -0.810.

In the first embodiment, the focal length of the second lens is f2, the focal length of the optical lens assembly is EFL, and f2/EFL = -2.885.

In the first embodiment, the focal length of the fifth lens is f5, the focal length of the optical lens assembly is EFL, and f5/EFL = -1.309.

In the first embodiment, the radius of curvature of the object surface of the second lens is R3, the focal length of the second lens is f2, and R3/f2 = 0.343.

In the first embodiment, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the optical lens assembly is EFL, and (f1+f2)/EFL=-4.475.

In the first embodiment, the combined focal length of the fourth lens to the sixth lens is f456, the total length of the optical photographic lens set is TTL, and f456/TTL = 0.434.

From the numerical values of the above relationship, it can be seen that the optical photographic lens assembly 10 of the first embodiment meets the requirements of relationship (1) to (16).

See FIG. 1B , which shows, from left to right, the astigmatism field curvature aberration diagram, the f-θ distortion diagram, and the longitudinal spherical aberration diagram of the optical photographic lens set 10. From the astigmatism field curvature aberration diagram (wavelength 550 nm), it can be seen that the variation of the aberration in the sagittal direction is between -0.01 and 0.00 mm in the entire field of view; and the variation of the aberration in the meridional direction is between -0.11 and 0.00 mm in the entire field of view. From the f-θ distortion aberration diagram (wavelength 550 nm), it can be seen that the absolute value of the f-θ distortion rate of the optical photographic lens set 10 is less than 10%. From the longitudinal spherical aberration diagram, it can be seen that the off-axis rays of four wavelengths including visible light and infrared light, 470 nm, 555 nm, 650 nm, and 950 nm at different heights can all be concentrated near the imaging point, and the imaging point deviation can be controlled between -0.01 and 0.05 mm. As shown in FIG. 1B , the optical camera lens assembly 10 of this embodiment has well corrected various aberrations and meets the imaging quality requirements of the optical system. Second Embodiment

2A and 2B, FIG2A is a schematic diagram of an optical photographic lens assembly of the second embodiment of the present invention. FIG2B is, from left to right, a diagram of astigmatism/field curvature, a diagram of f-θ distortion, and a diagram of longitudinal spherical aberration of the second embodiment of the present invention.

As shown in FIG2A , the optical imaging lens set 20 of the second embodiment includes a first lens 21, a second lens 22, a third lens 23, an aperture ST, a fourth lens 24, a fifth lens 25, and a sixth lens 26 in order from the object side to the image side. The optical imaging lens set 20 may further include a filter element 27 and an imaging surface 201. An image sensing element 202 may be further disposed on the imaging surface 201 to form an imaging device (not labeled).

The first lens 21 has negative refractive power, and its object side surface 21a is convex, and its image side surface 21b is concave, and both the object side surface 21a and the image side surface 21b are spherical. The material of the first lens 21 includes glass, but is not limited thereto.

The second lens 22 has negative refractive power, and its object side surface 22a is concave, and its image side surface 22b is convex, and both the object side surface 22a and the image side surface 22b are aspherical. The material of the second lens 22 includes plastic, but is not limited thereto.

The third lens 23 has positive refractive power, and its object side surface 23a is convex, the image side surface 23b is convex, and the object side surface 23a and the image side surface 23b are aspherical surfaces. The material of the third lens 23 includes glass, but is not limited thereto.

The fourth lens 24 has positive refractive power, and its object side surface 24a is convex, and its image side surface 24b is convex, and both the object side surface 24a and the image side surface 24b are aspherical. The material of the fourth lens 24 includes plastic, but is not limited thereto.

The fifth lens 25 has negative refractive power, and its object side surface 25a is concave, and its image side surface 25b is concave, and both the object side surface 25a and the image side surface 25b are aspherical. The material of the fifth lens 25 includes plastic, but is not limited thereto.

The sixth lens 26 has positive refractive power, and its object side surface 26a is convex, and its image side surface 26b is concave, and both the object side surface 26a and the image side surface 26b are aspherical. The material of the sixth lens 26 includes plastic, but is not limited thereto.

The filter element 27 is disposed between the sixth lens 26 and the imaging surface 201 to filter light of a specific wavelength range to allow the required wavelength to pass through, for example, an ultraviolet and far infrared light filter element to allow visible light and infrared light of a specified wavelength to pass through. The two surfaces 27a and 27b of the filter element 27 are both planes, and the material thereof is glass.

The image sensor 202 is, for example, a charge-coupled device (CCD) image sensor or a complementary metal oxide semiconductor image sensor (CMOS image sensor).

The detailed optical data of the optical photographic lens set 20 of the second embodiment and the aspheric coefficient of the lens surface are respectively listed in Table 3 and Table 4. In the second embodiment, the curve equation of the aspheric surface is expressed in the same form as that of the first embodiment. Second Embodiment TTL=13.58mm,EFL=2.78mm,FNO=2.3,HFOV=78° surface Surface type Curvature radius (mm) Distance(mm) Refractive Index Dispersion coefficient Focal length(mm) Subject flat Infinity First lens 21a Spherical 14.190 0.687 1.729 54.7 -4.29 21b Spherical 2.518 3.044 Second lens 22a Aspheric -2.756 0.273 1.537 56.0 -8.98 22b Aspheric -6.625 0.054 Third lens 23a Aspheric 8.634 1.709 1.810 45.0 4.53 23b Aspheric -5.808 0.026 aperture ST flat Infinity 0.653 Fourth lens 24a Aspheric 2.907 1.673 1.537 56.0 3.19 24b Aspheric -3.345 0.147 Fifth lens 25a Aspheric -2.722 0.498 1.661 24.4 -3.58 25b Aspheric 20.706 0.877 Sixth lens 26a Aspheric 4.460 2.065 1.537 56.0 14.51 26b Aspheric 8.704 1.050 Filter elements 27a flat Infinity 0.400 1.517 64.2 inf 27b flat Infinity 1.329 Imaging surface 201 flat Infinity 0.000 Reference wavelength: 550nm Table 3 Aspheric coefficient of the second embodiment 22a 22b 23a 23b 24a 24b 25a 25b 26a 26b K -5.38E+00 -2.04E+01 -4.77E+00 6.49E+00 -4.40E+00 -4.77E-02 8.05E-01 1.11E+02 -1.24E+01 -3.61E+01 A4 4.97E-04 1.01E-02 -1.25E-02 -7.19E-03 8.22E-03 -1.46E-02 3.85E-02 4.35E-02 3.75E-03 -4.53E-03 A6 1.55E-04 -1.17E-03 7.91E-05 9.26E-04 -9.93E-04 1.16E-03 -1.32E-02 -7.66E-03 -1.08E-04 1.43E-04 A8 -1.65E-04 -8.93E-05 -2.94E-04 3.19E-04 -1.28E-05 -5.80E-04 1.54E-03 -2.71E-04 3.23E-06 1.69E-05 A10 -1.05E-06 -4.92E-05 -2.03E-05 -5.48E-05 -1.44E-04 8.61E-05 2.28E-04 1.94E-04 -1.23E-07 -1.13E-06 A12 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A16 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Table 4 Second Embodiment No. Relational Numerical value 1 (f4+f5)/(CT4+CT5) -0.180 2 (f4+f5)/EFL -0.140 3 (f2+f3)/(CT2+CT3) -2.244 4 (f2+f3)/EFL -1.600 5 (R3+R4)/f2 1.045 6 AT23/EFL 0.019 7 TTL/AT56 15.490 8 (CT3-CT2)/AT23 26.577 9 TTL/AT23 251.345 10 AT56/EFL 0.315 11 f456/(f1+f2+f3) -0.724 12 f2/EFL -3.231 13 f5/EFL -1.286 14 R3/f2 0.307 15 (f1+f2)/EFL -4.774 16 f456/TTL 0.466 Table 5

See FIG. 2B , which shows, from left to right, the astigmatism field curvature aberration diagram, the f-θ distortion diagram, and the longitudinal spherical aberration diagram of the optical photographic lens set 20. From the astigmatism field curvature aberration diagram (wavelength 550 nm), it can be seen that the variation of the aberration in the sagittal direction is between -0.02 and 0.01 mm in the entire field of view; the variation of the aberration in the meridional direction is between -0.03 and 0.01 mm in the entire field of view. From the f-θ distortion aberration diagram (wavelength 550 nm), it can be seen that the absolute value of the f-θ distortion rate of the optical photographic lens set 20 is less than 8%. From the longitudinal spherical aberration diagram, it can be seen that the off-axis rays of four wavelengths including visible light and infrared light, 470 nm, 555 nm, 650 nm, and 950 nm at different heights can all be concentrated near the imaging point, and the imaging point deviation can be controlled between -0.03 and 0.05 mm. As shown in FIG. 2B , the optical camera lens assembly 20 of this embodiment has well corrected various aberrations and meets the imaging quality requirements of the optical system. Third Embodiment

Referring to FIG. 3A and FIG. 3B , FIG. 3A is a schematic diagram of an optical photographic lens assembly of the third embodiment of the present invention. FIG. 3B is, from left to right, a diagram of astigmatism/field curvature, a diagram of f-θ distortion, and a diagram of longitudinal spherical aberration of the third embodiment of the present invention.

As shown in FIG3A , the optical imaging lens set 30 of the third embodiment includes a first lens 31, a second lens 32, a third lens 33, an aperture ST, a fourth lens 34, a fifth lens 35, and a sixth lens 36 in order from the object side to the image side. The optical imaging lens set 30 may further include a filter element 37 and an imaging surface 301. An image sensing element 302 may be further disposed on the imaging surface 301 to form an imaging device (not separately labeled).

The first lens 31 has negative refractive power, and its object side surface 31a is convex, and its image side surface 31b is concave, and both the object side surface 31a and the image side surface 31b are spherical. The material of the first lens 31 includes glass, but is not limited thereto.

The second lens 32 has negative refractive power, and its object side surface 32a is concave, and its image side surface 32b is convex, and both the object side surface 32a and the image side surface 32b are aspherical. The material of the second lens 32 includes plastic, but is not limited thereto.

The third lens 33 has positive refractive power, and its object side surface 33a is convex, the image side surface 33b is convex, and the object side surface 33a and the image side surface 33b are aspherical surfaces. The material of the third lens 33 includes glass, but is not limited thereto.

The fourth lens 34 has positive refractive power, and its object side surface 34a is convex, and its image side surface 34b is convex, and both the object side surface 34a and the image side surface 34b are aspherical. The material of the fourth lens 34 includes plastic, but is not limited thereto.

The fifth lens 35 has negative refractive power, and its object side surface 35a is concave, and its image side surface 35b is concave, and both the object side surface 35a and the image side surface 35b are aspherical. The material of the fifth lens 35 includes plastic, but is not limited thereto.

The sixth lens 36 has positive refractive power, and its object side surface 36a is convex, and its image side surface 36b is concave, and both the object side surface 36a and the image side surface 36b are aspherical. The material of the fourth lens 36 includes plastic, but is not limited thereto.

The filter element 37 is disposed between the sixth lens 36 and the imaging surface 301 to filter light of a specific wavelength range to allow the required wavelength to pass through, for example, an ultraviolet and far infrared light filter element to allow visible light and infrared light of a specified wavelength to pass through. The two surfaces 37a and 37b of the filter element 37 are both planes, and the material thereof is glass.

The image sensor 302 is, for example, a charge-coupled device (CCD) image sensor or a complementary metal oxide semiconductor image sensor (CMOS image sensor).

The detailed optical data of the optical photographic lens set 30 of the third embodiment and the aspheric coefficient of the lens surface are respectively listed in Table 6 and Table 7. In the third embodiment, the curve equation of the aspheric surface is expressed in the same form as that of the first embodiment. Third Embodiment TTL=14.742mm,EFL=2.83mm,FNO=2.5,HFOV=78° surface Surface type Radius of curvature (mm) Distance(mm) Refractive Index Dispersion coefficient Focal length(mm) Subject flat Infinity First lens 31a Spherical 14.776 0.700 1.729 54.7 -4.45 31b Spherical 2.614 3.182 Second lens 32a Aspheric -2.786 0.392 1.537 56.0 -8.00 32b Aspheric -8.272 0.054 Third lens 33a Aspheric 8.950 1.869 1.810 45.0 4.65 33b Aspheric -5.883 0.133 aperture ST flat Infinity 0.697 Fourth lens 34a Aspheric 2.958 1.821 1.537 56.0 3.32 34b Aspheric -3.544 0.139 Fifth lens 35a Aspheric -2.771 0.544 1.661 24.4 -3.63 35b Aspheric 20.487 1.011 Sixth lens 36a Aspheric 4.758 2.282 1.537 56.0 12.53 36b Aspheric 13.423 0.118 Filter elements 37a flat Infinity 0.400 1.517 64.2 inf 37b flat Infinity 1.398 Imaging surface 301 flat Infinity 0.000 Reference wavelength: 550nm Table 6 Aspheric coefficient of the third embodiment 32a 32b 33a 33b 34a 34b 35a 35b 36a 36b K -5.17E+00 -2.51E+01 -3.74E+00 6.41E+00 -4.66E+00 -3.32E-01 5.51E-01 1.23E+02 -1.23E+01 -9.58E+01 A4 1.91E-04 9.73E-03 -1.23E-02 -7.04E-03 7.20E-03 -1.37E-02 4.12E-02 4.28E-02 4.00E-03 -5.25E-03 A6 1.09E-04 -1.16E-03 4.17E-04 8.46E-04 -1.80E-03 1.53E-03 -1.19E-02 -7.28E-03 -1.45E-04 2.28E-04 A8 -1.78E-04 -4.40E-05 -2.67E-04 2.41E-04 -2.04E-04 -4.52E-04 2.05E-03 -1.42E-04 5.67E-06 1.32E-05 A10 1.37E-05 -4.70E-05 -5.15E-05 -5.05E-05 3.31E-05 1.83E-04 1.11E-04 1.25E-04 -9.01E-08 -8.25E-07 A12 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A16 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Table 7

In the third embodiment, the values of the relational expressions of the optical imaging lens set 30 are listed in Table 8. As can be seen from Table 8, the optical imaging lens set 30 of the third embodiment meets the requirements of relational expressions (1) to (16). Third Embodiment No. Relational Numerical value 1 (f4+f5)/(CT4+CT5) -0.130 2 (f4+f5)/EFL -0.108 3 (f2+f3)/(CT2+CT3) -1.481 4 (f2+f3)/EFL -1.183 5 (R3+R4)/f2 1.382 6 AT23/EFL 0.019 7 TTL/AT56 14.578 8 (CT3-CT2)/AT23 27.106 9 TTL/AT23 270.515 10 AT56/EFL 0.357 11 f456/(f1+f2+f3) -0.834 12 f2/EFL -2.827 13 f5/EFL -1.281 14 R3/f2 0.348 15 (f1+f2)/EFL -4.399 16 f456/TTL 0.441 Table 8

See FIG. 3B , which shows, from left to right, the astigmatism field curvature aberration diagram, the f-θ distortion diagram, and the longitudinal spherical aberration diagram of the optical photographic lens set 30 . From the astigmatism field curvature aberration diagram (wavelength 550 nm), it can be seen that the variation of the aberration in the sagittal direction is between -0.01 and 0.01 mm in the entire field of view; the variation of the aberration in the meridional direction is between -0.11 and 0.01 mm in the entire field of view. From the f-θ distortion aberration diagram (wavelength 550 nm), it can be seen that the absolute value of the f-θ distortion rate of the optical photographic lens set 30 is less than 9%. From the longitudinal spherical aberration diagram, it can be seen that the off-axis rays of four wavelengths including visible light and infrared light, 470 nm, 555 nm, 650 nm, and 950 nm at different heights can all be concentrated near the imaging point, and the imaging point deviation can be controlled between -0.01 and 0.05 mm. As shown in FIG. 3B , the optical camera lens assembly 30 of this embodiment has well corrected various aberrations and meets the imaging quality requirements of the optical system. Fourth Embodiment

4A and 4B, FIG4A is a schematic diagram of an optical photographic lens assembly of the fourth embodiment of the present invention. FIG4B is, from left to right, a diagram of astigmatism/field curvature, a diagram of f-θ distortion, and a diagram of longitudinal spherical aberration of the fourth embodiment of the present invention.

As shown in FIG4A , the optical imaging lens set 40 of the fourth embodiment includes a first lens 41, a second lens 42, a third lens 43, an aperture ST, a fourth lens 44, a fifth lens 45, and a sixth lens 46 in order from the object side to the image side. The optical imaging lens set 40 may further include a filter element 47 and an imaging surface 401. An image sensing element 402 may be further disposed on the imaging surface 401 to form an imaging device (not separately labeled).

The first lens 41 has negative refractive power, and its object side surface 41a is convex, and its image side surface 41b is concave, and both the object side surface 41a and the image side surface 41b are spherical. The material of the first lens 41 includes glass, but is not limited thereto.

The second lens 42 has negative refractive power, and its object side surface 42a is concave, and its image side surface 42b is convex, and both the object side surface 42a and the image side surface 42b are aspherical. The material of the second lens 42 includes plastic, but is not limited thereto.

The third lens 43 has positive refractive power, and its object side surface 43a is convex, and its image side surface 43b is convex, and the object side surface 43a and the image side surface 43b are aspherical surfaces. The material of the third lens 43 includes glass, but is not limited thereto.

The fourth lens 44 has positive refractive power, and its object side surface 44a is convex, and its image side surface 44b is convex, and both the object side surface 44a and the image side surface 44b are aspherical. The material of the fourth lens 44 includes plastic, but is not limited thereto.

The fifth lens 45 has negative refractive power, and its object side surface 45a is concave, and its image side surface 45b is concave, and both the object side surface 45a and the image side surface 45b are aspherical. The material of the fifth lens 45 includes plastic, but is not limited thereto.

The sixth lens 46 has positive refractive power, and its object side surface 46a is convex, and its image side surface 46b is concave, and both the object side surface 46a and the image side surface 46b are aspherical. The material of the sixth lens 46 includes plastic, but is not limited thereto.

The filter element 47 is disposed between the sixth lens 46 and the imaging surface 401 to filter light of a specific wavelength range to allow the required wavelength to pass through, for example, an ultraviolet and far infrared light filter element to allow visible light and infrared light of a specified wavelength to pass through. The two surfaces 47a and 47b of the filter element 47 are both planes, and the material thereof is glass.

The image sensor 402 is, for example, a charge-coupled device (CCD) image sensor or a complementary metal oxide semiconductor image sensor (CMOS image sensor).

The detailed optical data of the optical photographic lens set 40 of the fourth embodiment and the aspheric coefficient of the lens surface are respectively listed in Table 9 and Table 10. In the fourth embodiment, the curve equation of the aspheric surface is expressed in the same form as that of the first embodiment. Fourth embodiment TTL=14.48mm,EFL=2.86mm,FNO=2.43,HFOV=70° surface Surface type Curvature radius (mm) Distance(mm) Refractive Index Dispersion coefficient Focal length(mm) Subject flat Infinity First lens 41a Spherical 12.306 0.692 1.729 54.7 -4.49 41b Spherical 2.531 3.109 Second lens 42a Aspheric -2.782 0.383 1.537 56.0 -8.06 42b Aspheric -8.107 0.051 Third lens 43a Aspheric 8.939 1.798 1.810 45.0 4.63 43b Aspheric -5.872 0.122 aperture ST flat Infinity 0.683 Fourth lens 44a Aspheric 2.944 1.802 1.537 56.0 3.31 44b Aspheric -3.552 0.145 Fifth lens 45a Aspheric -2.777 0.517 1.661 24.4 -6.62 45b Aspheric 20.027 1.063 Sixth lens 46a Aspheric 4.498 2.249 1.537 56.0 12.23 46b Aspheric 11.694 0.096 Filter elements 47a flat Infinity 0.400 1.517 64.2 inf 47b flat Infinity 1.376 Imaging surface 401 flat Infinity 0.000 Reference wavelength: 550nm Table 9 Aspheric coefficient of the fourth embodiment 42a 42b 43a 43b 44a 44b 45a 45b 46a 46b K -5.18E+00 -2.45E+01 -3.66E+00 6.46E+00 -4.59E+00 -2.88E-01 5.47E-01 1.23E+02 -1.10E+01 -6.42E+01 A4 3.41E-04 9.77E-03 -1.23E-02 -7.11E-03 7.33E-03 -1.39E-02 4.12E-02 4.30E-02 3.62E-03 -6.05E-03 A6 1.52E-04 -1.14E-03 3.76E-04 8.39E-04 -1.83E-03 1.51E-03 -1.18E-02 -7.22E-03 -1.57E-04 1.86E-04 A8 -1.75E-04 -3.85E-05 -2.76E-04 2.51E-04 -2.30E-04 -4.49E-04 2.04E-03 -1.46E-04 6.21E-06 1.08E-05 A10 9.52E-06 -5.27E-05 -4.86E-05 -5.39E-05 5.09E-05 1.99E-04 8.88E-05 1.07E-04 -3.07E-07 -9.46E-07 A12 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A16 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Table 10

In the fourth embodiment, the values of the various relational expressions of the optical imaging lens set 40 are listed in Table 9. As can be seen from Table 9, the optical imaging lens set 40 of the fourth embodiment meets the requirements of relational expressions (1) to (16). Fourth embodiment No. Relational Numerical value 1 (f4+f5)/(CT4+CT5) -1.429 2 (f4+f5)/EFL -1.158 3 (f2+f3)/(CT2+CT3) -1.573 4 (f2+f3)/EFL -1.199 5 (R3+R4)/f2 1.350 6 AT23/EFL 0.018 7 TTL/AT56 13.625 8 (CT3-CT2)/AT23 27.796 9 TTL/AT23 284.451 10 AT56/EFL 0.372 11 f456/(f1+f2+f3) -0.809 12 f2/EFL -2.820 13 f5/EFL -2.316 14 R3/f2 0.345 15 (f1+f2)/EFL -4.389 16 f456/TTL 0.443 Table 11

See FIG. 4B , which shows, from left to right, the astigmatism field curvature aberration diagram, the f-θ distortion diagram, and the longitudinal spherical aberration diagram of the optical photographic lens set 40. From the astigmatism field curvature aberration diagram (wavelength 550 nm), it can be seen that the variation of the aberration in the sagittal direction is within + 0.01 mm within the entire field of view; the variation of the aberration in the tangential direction is between -0.05 and 0.01 mm within the entire field of view. From the f-θ distortion aberration diagram (wavelength 550 nm), it can be seen that the absolute value of the f-θ distortion rate of the optical photographic lens set 40 is less than 7%. From the longitudinal spherical aberration diagram, it can be seen that the off-axis rays of four wavelengths including visible light and infrared light, 470 nm, 555 nm, 650 nm, and 950 nm at different heights can all be concentrated near the imaging point, and the imaging point deviation can be controlled between -0.02 and 0.05 mm. As shown in FIG. 4B , the optical camera lens assembly 40 of this embodiment has well corrected various aberrations and meets the imaging quality requirements of the optical system. Fifth Embodiment

5A and 5B , FIG5A is a schematic diagram of an optical photographic lens assembly of the fifth embodiment of the present invention. FIG5B is a diagram of astigmatism/field curvature, f-θ distortion, and longitudinal spherical aberration of the fifth embodiment of the present invention.

As shown in FIG5A , the optical imaging lens set 50 of the fifth embodiment includes, from the object side to the image side, a first lens 51, a second lens 52, a third lens 53, an aperture ST, a fourth lens 54, a fifth lens 55, and a sixth lens 56. The optical imaging lens set 50 may further include a filter element 57 and an imaging surface 501. An image sensing element 502 may be further disposed on the imaging surface 501 to form an imaging device (not separately labeled).

The first lens 51 has negative refractive power, and its object side surface 51a is convex, and its image side surface 51b is concave, and both the object side surface 51a and the image side surface 51b are spherical. The material of the first lens 51 includes glass, but is not limited thereto.

The second lens 52 has negative refractive power, and its object side surface 52a is concave, and its image side surface 52b is convex, and both the object side surface 52a and the image side surface 52b are aspherical. The material of the second lens 52 includes plastic, but is not limited thereto.

The third lens 53 has positive refractive power, and its object side surface 53a is convex, and its image side surface 53b is convex, and the object side surface 53a and the image side surface 53b are aspherical surfaces. The material of the third lens 53 includes glass, but is not limited thereto.

The fourth lens 54 has positive refractive power, and its object side surface 54a is convex, and its image side surface 54b is convex, and both the object side surface 54a and the image side surface 54b are aspherical. The material of the fourth lens 54 includes plastic, but is not limited thereto.

The fifth lens 55 has negative refractive power, and its object side surface 55a is concave, and its image side surface 55b is concave, and both the object side surface 55a and the image side surface 55b are aspherical. The material of the fifth lens 55 includes plastic, but is not limited thereto.

The sixth lens 56 has positive refractive power, and its object side surface 56a is convex, and its image side surface 56b is concave, and both the object side surface 56a and the image side surface 56b are aspherical. The material of the sixth lens 56 includes plastic, but is not limited thereto.

The filter element 57 is disposed between the sixth lens 56 and the imaging surface 501 to filter light of a specific wavelength range to allow the required wavelength to pass through, for example, an ultraviolet and far infrared light filter element to allow visible light and infrared light of a specified wavelength to pass through. The two surfaces 57a and 57b of the filter element 57 are both planes, and the material thereof is glass.

The image sensor 502 is, for example, a charge-coupled device (CCD) image sensor or a complementary metal oxide semiconductor image sensor (CMOS image sensor).

The detailed optical data of the optical photographic lens set 50 of the fifth embodiment and the aspheric coefficient of the lens surface are respectively listed in Table 12 and Table 13. In the fifth embodiment, the curve equation of the aspheric surface is expressed in the same form as that of the first embodiment. Fifth embodiment TTL=14.33mm,EFL=2.78mm,FNO=2.8,HFOV=85° surface Surface type Radius of curvature (mm) Distance(mm) Refractive Index Dispersion coefficient Focal length(mm) Subject flat Infinity First lens 51a Spherical 13.869 0.694 1.729 54.7 -4.42 51b Spherical 2.568 3.097 Second lens 52a Aspheric -2.796 0.387 1.537 56.0 -8.28 52b Aspheric -7.856 0.053 Third lens 53a Aspheric 8.868 1.844 1.810 45.0 4.62 53b Aspheric -5.856 0.171 aperture ST flat Infinity 0.654 Fourth lens 54a Aspheric 2.939 1.788 1.537 56.0 3.30 54b Aspheric -3.528 0.140 Fifth lens 55a Aspheric -2.766 0.496 1.661 24.4 -3.62 55b Aspheric 20.430 0.886 Sixth lens 56a Aspheric 4.486 2.233 1.537 56.0 12.85 56b Aspheric 10.518 0.108 Filter elements 57a flat Infinity 0.400 1.517 64.2 inf 57b flat Infinity 1.387 Imaging surface 501 flat Infinity 0.000 Reference wavelength: 550nm Table 12 Aspheric coefficient of the fifth embodiment 52a 52b 53a 53b 54a 54b 55a 55b 56a 56b K -5.18E+00 -2.54E+01 -3.77E+00 6.53E+00 -4.55E+00 -2.30E-01 5.50E-01 1.21E+02 -1.34E+01 -6.65E+01 A4 9.94E-05 9.89E-03 -1.22E-02 -7.20E-03 7.45E-03 -1.41E-02 4.12E-02 4.25E-02 4.14E-03 -5.19E-03 A6 1.10E-04 -1.10E-03 3.78E-04 7.84E-04 -1.72E-03 1.77E-03 -1.20E-02 -7.21E-03 -1.56E-04 2.26E-04 A8 -1.66E-04 -2.47E-05 -2.90E-04 2.87E-04 -1.73E-04 -3.47E-04 2.02E-03 -1.24E-04 5.81E-06 1.25E-05 A10 1.81E-05 -4.74E-05 -6.63E-05 -6.65E-05 -2.37E-05 1.34E-04 1.24E-04 1.16E-04 -1.03E-07 -8.60E-07 A12 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A16 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Table 13

In the fifth embodiment, the values of the relational expressions of the optical imaging lens set 50 are listed in Table 14. As can be seen from Table 14, the optical imaging lens set 50 of the fifth embodiment meets the requirements of relational expressions (1) to (16). Fifth embodiment No. Relational Numerical value 1 (f4+f5)/(CT4+CT5) -0.143 2 (f4+f5)/EFL -0.117 3 (f2+f3)/(CT2+CT3) -1.640 4 (f2+f3)/EFL -1.316 5 (R3+R4)/f2 1.287 6 AT23/EFL 0.019 7 TTL/AT56 16.177 8 (CT3-CT2)/AT23 27.296 9 TTL/AT23 268.616 10 AT56/EFL 0.319 11 f456/(f1+f2+f3) -0.787 12 f2/EFL -2.978 13 f5/EFL -1.303 14 R3/f2 0.338 15 (f1+f2)/EFL -4.569 16 f456/TTL 0.444 Table 14

See FIG. 5B , which shows, from left to right, the astigmatism field curvature aberration diagram, the f-θ distortion diagram, and the longitudinal spherical aberration diagram of the optical photographic lens set 50. From the astigmatism field curvature aberration diagram (wavelength 550 nm), it can be seen that the variation of the aberration in the sagittal direction is within -0.02 to 0.00 mm in the entire field of view; the variation of the aberration in the meridional direction is between -0.17 and 0.00 mm in the entire field of view. From the f-θ distortion aberration diagram (wavelength 550 nm), it can be seen that the absolute value of the f-θ distortion rate of the optical photographic lens set 50 is less than 10%. From the longitudinal spherical aberration diagram, it can be seen that the off-axis rays of four wavelengths including visible light and infrared light, 470 nm, 555 nm, 650 nm, and 950 nm at different heights can all be concentrated near the imaging point, and the imaging point deviation can be controlled between 0.00 and 0.04 mm. As shown in FIG. 5B , the optical camera lens assembly 50 of this embodiment has well corrected various aberrations and meets the imaging quality requirements of the optical system. Sixth Embodiment

6A and 6B , FIG. 6A is a schematic diagram of an optical photographic lens assembly of the sixth embodiment of the present invention, and FIG. 6B is a diagram of astigmatism/field curvature, f-θ distortion, and longitudinal spherical aberration of the sixth embodiment of the present invention.

As shown in FIG6A , the optical imaging lens set 60 of the sixth embodiment includes a first lens 61, a second lens 62, a third lens 63, an aperture ST, a fourth lens 64, a fifth lens 65, and a sixth lens 66 in order from the object side to the image side. The optical imaging lens set 60 may further include a filter element 67 and an imaging surface 601. An image sensing element 602 may be further disposed on the imaging surface 601 to form an imaging device (not separately labeled).

The first lens 61 has negative refractive power, and its object side surface 61a is convex, and its image side surface 61b is concave, and both the object side surface 61a and the image side surface 61b are spherical. The material of the first lens 61 includes glass, but is not limited thereto.

The second lens 62 has negative refractive power, and its object side surface 62a is concave, and its image side surface 62b is convex, and both the object side surface 62a and the image side surface 62b are aspherical. The material of the second lens 62 includes plastic, but is not limited thereto.

The third lens 63 has positive refractive power, and its object side surface 63a is convex, and its image side surface 63b is convex, and the object side surface 63a and the image side surface 63b are aspherical surfaces. The material of the third lens 63 includes plastic, but is not limited thereto.

The fourth lens 64 has positive refractive power, and its object side surface 64a is convex, and its image side surface 64b is convex, and both the object side surface 64a and the image side surface 64b are aspherical. The material of the fourth lens 64 includes plastic, but is not limited thereto.

The fifth lens 65 has negative refractive power, and its object side surface 65a is concave, and its image side surface 65b is concave, and both the object side surface 65a and the image side surface 65b are aspherical. The material of the fifth lens 65 includes plastic, but is not limited thereto.

The sixth lens 66 has positive refractive power, and its object side surface 66a is convex, and its image side surface 66b is concave, and both the object side surface 66a and the image side surface 66b are aspherical. The material of the sixth lens 66 includes plastic, but is not limited thereto.

The filter element 67 is disposed between the sixth lens 66 and the imaging surface 601 to filter light of a specific wavelength range to allow the required wavelength to pass through, for example, an ultraviolet and far infrared light filter element to allow visible light and infrared light of a specified wavelength to pass through. The two surfaces 66a and 66b of the filter element 67 are both flat surfaces made of glass.

The image sensor 602 is, for example, a charge-coupled device (CCD) image sensor or a complementary metal oxide semiconductor image sensor (CMOS image sensor).

The detailed optical data of the optical photographic lens set 60 of the sixth embodiment and the aspheric coefficient of the lens surface are respectively listed in Table 15 and Table 16. In the sixth embodiment, the curve equation of the aspheric surface is expressed in the same form as that of the first embodiment. Sixth embodiment TTL=15.17mm,EFL=2.78mm,FNO=2.4,HFOV=78° surface Surface type Radius of curvature (mm) Distance(mm) Refractive Index Dispersion coefficient Focal length(mm) Subject flat Infinity First lens 61a Spherical 13.301 0.683 1.729 54.7 -4.56 61b Spherical 2.610 3.187 Second lens 62a Aspheric -2.857 0.442 1.537 56.0 -14.42 62b Aspheric -5.620 0.098 Third lens 63a Aspheric 8.283 1.894 1.537 56.0 6.46 63b Aspheric -5.514 0.156 aperture ST flat Infinity 0.998 Fourth lens 64a Aspheric 2.750 2.481 1.537 56.0 3.38 64b Aspheric -3.678 0.295 Fifth lens 65a Aspheric -2.755 0.479 1.661 24.4 -3.66 65b Aspheric 23.131 0.550 Sixth lens 66a Aspheric 4.592 2.058 1.537 56.0 14.75 66b Aspheric 9.169 0.085 Filter elements 67a flat Infinity 0.400 1.517 64.2 inf 67b flat Infinity 1.364 Imaging surface 601 flat Infinity 0.000 Reference wavelength: 550nm Table 15 Aspheric coefficient of the sixth embodiment 62a 62b 63a 63b 64a 64b 65a 65b 66a 66b K -5.22E+00 -1.61E+01 1.87E+00 7.43E+00 -4.10E+00 -4.90E-01 6.38E-01 1.04E+02 -1.59E+01 -4.60E+01 A4 -4.35E-04 9.22E-03 -1.12E-02 -9.36E-03 8.82E-03 -1.34E-02 4.06E-02 4.22E-02 4.44E-03 -7.60E-03 A6 -5.15E-05 -1.06E-03 3.65E-04 1.30E-03 -1.14E-03 2.04E-03 -1.25E-02 -7.25E-03 -2.00E-04 1.73E-04 A8 -1.76E-04 -3.42E-05 -2.93E-04 6.26E-04 -1.05E-04 -5.51E-04 1.80E-03 -7.39E-05 1.77E-06 1.73E-05 A10 1.08E-05 -4.96E-05 -5.44E-05 -7.59E-05 -6.23E-05 -9.38E-05 -1.51E-04 1.25E-04 2.21E-07 -9.26E-07 A12 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A14 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A16 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Table 16

In the sixth embodiment, the values of the relational expressions of the optical photographic lens set 60 are listed in Table 17. As can be seen from Table 17, the optical photographic lens set 60 of the sixth embodiment meets the requirements of relational expressions (1) to (16). Sixth embodiment No. Relational Numerical value 1 (f4+f5)/(CT4+CT5) -0.097 2 (f4+f5)/EFL -0.103 3 (f2+f3)/(CT2+CT3) -3.411 4 (f2+f3)/EFL -2.866 5 (R3+R4)/f2 0.588 6 AT23/EFL 0.035 7 TTL/AT56 27.558 8 (CT3-CT2)/AT23 14.851 9 TTL/AT23 155.116 10 AT56/EFL 0.198 11 f456/(f1+f2+f3) -0.447 12 f2/EFL -5.188 13 f5/EFL -1.318 14 R3/f2 0.198 15 (f1+f2)/EFL -6.829 16 f456/TTL 0.369 Table 17

See FIG. 6B , which shows, from left to right, the astigmatism field curvature aberration diagram, the f-θ distortion diagram, and the longitudinal spherical aberration diagram of the optical photographic lens set 60. From the astigmatism field curvature aberration diagram (wavelength 550 nm), it can be seen that the variation of the aberration in the sagittal direction within the entire field of view is between -0.03 and -0.04 mm; the variation of the aberration in the meridional direction within the entire field of view is between -0.08 and 0.18 mm. From the f-θ distortion aberration diagram (wavelength 550 nm), it can be seen that the absolute value of the f-θ distortion rate of the optical photographic lens set 60 is less than 9%. From the longitudinal spherical aberration diagram, it can be seen that the off-axis rays of four wavelengths including visible light and infrared light, 470 nm, 555 nm, 650 nm, and 950 nm at different heights can all be concentrated near the imaging point, and the imaging point deviation can be controlled between -0.03 and 0.04 mm. As shown in FIG. 6B , the optical camera lens assembly 60 of this embodiment has well corrected various aberrations and meets the imaging quality requirements of the optical system. Seventh Embodiment

7 , an imaging device 1010 includes the optical imaging lens set 10, 20, 30, 40, 50, 60 of the first to sixth embodiments described above, and an image sensing element 102, 202, 302, 402, 502, 602; wherein the image sensing element 102, 202, 302, 402, 502, 602 is disposed on the imaging surface 101, 201, 301, 401, 501, 601 of the optical imaging lens set 10, 20, 30, 40, 50, 60. The image sensing elements 102, 202, 302, 402, 502, 602 are, for example, charge-coupled devices (CCD) or complementary metal oxide semiconductor (CMOS) image sensing elements.

In FIG. 7 , a vehicle electronic device 1000 according to the seventh embodiment of the present invention includes an imaging device 1010, wherein the general electronic device 1000 is used to observe, monitor, sense and/or record the environment and status outside the vehicle.

In FIG. 8 , the general electronic device 2000 of the eighth embodiment of the present invention includes an imaging device 2010 , wherein the general electronic device 2000 can be applied to general 3C products and other electronic products with imaging functions.

Although the present invention is described using the aforementioned several embodiments, these embodiments are not intended to limit the scope of the present invention. For anyone familiar with this technology, without departing from the spirit and scope of the present invention, various changes in form and details can still be made with reference to the contents of the embodiments disclosed in the present invention. Therefore, it should be understood here that the present invention is defined by the following patent application scope, and any changes made within the patent application scope or its equivalent scope should still fall within the patent application scope of the present invention.

10, 20, 30, 40, 50, 60: optical imaging lens group 11, 21, 31, 41, 51, 61: first lens 12, 22, 32, 42, 52, 62: second lens 13, 23, 33, 43, 53, 63: third lens 14, 24, 34, 44, 54, 64: fourth lens 15, 25, 35, 45, 55, 65: fifth lens 16, 26, 36, 46, 56, 66: sixth lens 17, 27, 37, 47, 57, 67: filter element 101, 201, 301, 401, 501, 601: imaging surface 11a, 21a, 31a, 41a, 51a, 61a: object side of the first lens 11b, 21b, 31b, 41b, 51b, 61b: image side of the first lens 12a, 22a, 32a, 42a, 52a, 62a: object side of the second lens 12b, 22b, 32b, 42b, 52b, 62b: image side of the second lens 13a, 23a, 33a, 43a, 53a, 63a: object side of the third lens 13b, 23b, 33b, 43b, 53b, 63b: image side of the third lens 14a, 24a, 34a, 44a, 54a, 64a: object side of the fourth lens 14b, 24b, 34b, 44b, 54b, 64b: image side of the fourth lens 15a, 25a, 35a, 45a, 55a, 65a: object side of the fifth lens 15b, 25b, 35b, 45b, 55b, 65b: image side of the fifth lens 16a, 26a, 36a, 46a, 56a, 66a: object side of the sixth lens 16b, 26b, 36b, 46b, 56b, 66b: image side of the sixth lens 17a, 17b, 27a, 27b, 37a, 37b, 47a, 47b, 57a, 57b, 67a, 67b: two surfaces of filter element 102, 202, 302, 402, 502, 602: image sensor element 1000: automotive electronic device 2000: general electronic device 1010, 2010: imaging device I: optical axis ST: aperture

〔Figure 1A〕is a schematic diagram of the optical photographic lens set of the first embodiment of the present invention; 〔Figure 1B〕is a diagram of the astigmatism field curvature aberration, distortion diagram and longitudinal spherical aberration of the first embodiment of the present invention from left to right; 〔Figure 2A〕is a schematic diagram of the optical photographic lens set of the second embodiment of the present invention; 〔Figure 2B〕is a diagram of the astigmatism field curvature aberration, distortion diagram and longitudinal spherical aberration of the second embodiment of the present invention from left to right; 〔Figure 3A〕is a schematic diagram of the optical photographic lens set of the third embodiment of the present invention; 〔Figure 3B〕is a diagram of the astigmatism field curvature aberration, distortion diagram and longitudinal spherical aberration of the third embodiment of the present invention from left to right; 〔Figure 4A〕is a schematic diagram of the optical photographic lens set of the fourth embodiment of the present invention; 〔Figure 4B〕is a diagram of astigmatism, field curvature, distortion, and longitudinal spherical aberration of the fourth embodiment of the present invention from left to right; 〔Figure 5A〕is a schematic diagram of the optical photographic lens assembly of the fifth embodiment of the present invention; 〔Figure 5B〕is a diagram of astigmatism, field curvature, distortion, and longitudinal spherical aberration of the fifth embodiment of the present invention from left to right; 〔Figure 6A〕is a schematic diagram of the optical photographic lens assembly of the sixth embodiment of the present invention; 〔Figure 6B〕is a diagram of astigmatism, field curvature, distortion, and longitudinal spherical aberration of the sixth embodiment of the present invention from left to right; 〔Figure 07〕is a schematic diagram of a vehicle electronic device of the seventh embodiment of the present invention. 〔Figure 08〕is a schematic diagram of a general electronic device of the eighth embodiment of the present invention.

10: Optical photography lens set

11: First lens

12: Second lens

13: The third lens

14: The fourth lens

15: The fifth lens

16: Sixth lens

17: Filter element

101: Imaging surface

11a: Object side of the first lens

11b: Image side of the first lens

12a: The side of the second lens

12b: Image side of the second lens

13a: The side of the third lens

13b: Image side of the third lens

14a: The side of the fourth lens

14b: Image side of the fourth lens

15a: Side view of the fifth lens

15b: Image side of the fifth lens

16a: The side of the sixth lens

16b: Image side of the sixth lens

17a, 17b: Two surfaces of the filter element

102: Image sensor element

I: Optical axis

ST: aperture

Claims (16)

An optical photographic lens set comprises, in order from the object side to the image side: a first lens having negative refractive power, whose object side surface is convex and whose image side surface is concave; a second lens having negative refractive power, whose object side surface is concave and whose image side surface is convex; a third lens having positive refractive power, whose object side surface is convex and whose image side surface is convex surface; an aperture; a fourth lens having positive refractive power, whose object side surface is convex and whose image side surface is convex; a fifth lens having negative refractive power, whose object side surface is concave and whose image side surface is concave; a sixth lens having positive refractive power, whose object side surface is convex and whose image side surface is concave; wherein the focal length of the second lens is is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the thickness of the second lens is CT2, the thickness of the third lens is CT3, the thickness of the fourth lens is CT4, the thickness of the fifth lens is CT5, the total length of the optical photographic lens set is TTL, and the air interval from the fifth lens to the sixth lens is AT56, which satisfies the following relationship: -1.5<(f4+f5)/(CT4+CT5)<-0.09; -3.5<(f2+f3)/(CT2+CT3)<-1.3; and 13<TTL/AT56<28. An optical photographic lens set includes, from the object side to the image side, in order: a first lens having negative refractive power, whose object side surface is convex and whose image side surface is concave; a second lens having negative refractive power, whose object side surface is concave and whose image side surface is convex; a third lens having positive refractive power, whose object side surface is convex and whose image side surface is convex; an aperture; a fourth lens having positive refractive power, whose object side surface is convex and whose image side surface is convex; a fifth lens having negative refractive power, whose object side surface is concave and whose image side surface is concave; a sixth lens having positive refractive power, whose object side surface is convex and whose image side surface is concave; , the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the thickness of the second lens is CT2, the thickness of the third lens is CT3, the focal length of the optical lens set is EFL, the total length of the optical photographic lens set is TTL, and the air interval from the fifth lens to the sixth lens is AT56, which satisfies the following relationships: -1.2<(f4+f5)/EFL<-0.1; -3.5<(f2+f3)/(CT2+CT3)<-1.3; and 13<TTL/AT56<28. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the focal length of the second lens is f2, the focal length of the third lens is f3, and the focal length of the optical lens set is EFL, which satisfies the following relationship: -2.9<(f2+f3)/EFL<-1. For an optical photographic lens set as claimed in item 1 or 2 of the patent application, the radius of curvature of the object surface of the second lens is R3, the radius of curvature of the image surface of the second lens is R4, and the focal length of the second lens is f2, which satisfies the following relationship: 0.5<(R3+R4)/f2<1.4. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the air interval between the second lens and the third lens is AT23, and the focal length of the optical lens set is EFL, which satisfies the following relationship: 0.01<AT23/EFL<0.04. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the thickness of the second lens is CT2, the thickness of the third lens is CT3, and the air interval from the second lens to the third lens is AT23, which satisfies the following relationship: 14<(CT3-CT2)/AT23<30. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the total length of the optical photographic lens set is TTL, and the air interval from the second lens to the third lens is AT23, which satisfies the following relationship: 155<TTL/AT23<305. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the air interval between the fifth lens and the sixth lens is AT56, and the focal length of the optical lens set is EFL, which satisfies the following relationship: 0.19<AT56/EFL<0.4. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the combined focal length of the fourth lens to the sixth lens is f456, the focal length of the first lens is f1, the focal length of the second lens is f2, and the focal length of the third lens is f3, which satisfies the following relationship: -0.9<f456/(f1+f2+f3)<-0.4. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the focal length of the second lens is f2, and the focal length of the optical lens set is EFL, which satisfies the following relationship: -5.5<f2/EFL<-2.7. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the focal length of the fifth lens is f5, and the focal length of the optical lens set is EFL, which satisfies the following relationship: -2.5<f5/EFL<-1.2. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the radius of curvature of the object surface of the second lens is R3, and the focal length of the second lens is f2, which satisfies the following relationship: 0.19<R3/f2<0.4. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the focal length of the first lens is f1, the focal length of the second lens is f2, and the focal length of the optical lens set is EFL, which satisfies the following relationship: -7<(f1+f2)/EFL<-4. For example, in the optical photographic lens set of item 1 or item 2 of the patent application, the combined focal length of the fourth lens to the sixth lens is f456, and the total length of the optical photographic lens set is TTL, which satisfies the following relationship: 0.3<f456/TTL<0.5. An imaging device, comprising an optical imaging lens set as in item 1 or item 2 of the patent application scope and an image sensing element, wherein the image sensing element is disposed on the imaging surface of the optical imaging lens set. An electronic device comprising an imaging device as described in claim 15.