TWI787122B - Optical imaging lens, imaging device and electronic device - Google Patents

Abstract

An optical imaging lens includes, from object side to image side, the first lens has negative refractive power and includes an object-side surface being convex; the second lens has negative refractive power and includes an image-side surface being concave; the third lens has refractive power and includes an image-side surface being convex; the fourth lens has positive refractive power and includes an object-side surface being convex; the fifth lens has negative refractive power; the sixth lens has refractive power and includes an object-side surface being convex. When specific conditions are satisfied, the optical imaging lens can have good thermal stability and good imaging qualities.

Description

Optical camera lens group, imaging device and electronic device

The present invention relates to an optical imaging device, especially an optical imaging lens group that can be used in vehicle electronic devices or driving photography devices, as well as an imaging device and an electronic device with the optical imaging lens group.

With the improvement of the manufacturing level of photographic imaging devices, their application fields are becoming more and more diverse, such as mobile devices, drones, and vehicle devices. Take the vehicle device as an example. In the early days, an external driving recorder was connected to the vehicle power supply. When the vehicle starts, the driving recorder will automatically turn on and start recording the traffic conditions within the field of vision; in recent years, in order to improve the safety of vehicles, Relevant companies have gradually invested in the development of self-driving cars, that is, installing various sensors on the vehicles to detect the state of the environment. Among them, in addition to being used to record traffic conditions, the optical lens can also cooperate with image recognition and intelligent computing to improve the driving safety and comfort of vehicles in various environments.

In addition, users not only require clear imaging, but also require a wider field of view and good thermal stability to meet the needs of various climates and driving environments. Therefore, how to provide an optical imaging device with good imaging quality and resistance to environmental temperature changes has become a problem that people in this technical field want to solve urgently.

Therefore, in order to solve the above problems, the present invention provides an optical imaging lens group, which includes a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens and a sixth lens in sequence from the object side to the image side. lens. Among them, the first lens has negative refraction power, and its object side is convex; the second lens has negative refraction power, and its image side is concave; the third lens has refraction power, and its image side is convex; the fourth lens has positive refraction power , its object side is convex; the fifth lens has negative refractive power; the sixth lens has refractive power, and its object side is convex. The total number of lenses of the optical imaging lens group is six pieces; the distance from the image side of the third lens to the object side of the fourth lens is AT34, and the effective focal length of the optical imaging lens group is EFL. The combined focal length of the lens is f123, and the combined focal length of the fourth lens to the fifth lens is f45, which satisfy the following relationship: 1.0 ≤ EFL/AT34 ≤ 8.0; ∣ f45/f123∣ ≤ 2.0.

According to an embodiment of the present invention, the radius of curvature of the object side of the second lens is R3, and the radius of curvature of the image side of the second lens is R4, which satisfy the following relationship: |R3/R4| ≤ 60.

According to an embodiment of the present invention, the maximum thickness from the object side of the fifth lens parallel to the optical axis to the image side is CT5m, and the minimum thickness from the object side of the fifth lens parallel to the optical axis to the image side is CT5m, which satisfies the following relationship : 1.0 ≤ CT5M/CT5m ≤ 3.0.

The present invention further provides an optical imaging lens group, which sequentially includes a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens and a sixth lens from the object side to the image side. Among them, the first lens has negative refraction power, and its object side is convex; the second lens has negative refraction power, and its image side is concave; the third lens has refraction power, and its image side is convex; the fourth lens has positive refraction power , its object side is convex; the fifth lens has negative refractive power; the sixth lens has refractive power, and its object side is convex. The total number of lenses of the optical imaging lens group is six pieces; the distance from the image side of the third lens to the object side of the fourth lens is AT34, the effective focal length of the optical imaging lens group is EFL, and the object side of the fifth lens is The radius of curvature is R9, and the radius of curvature of the image side of the fifth lens is R10, which satisfies the following relationship: 1.0 ≤ EFL/AT34 ≤ 8.0; 4.0 ≤ R10/R9 ≤ 55.0.

According to an embodiment of the present invention, the radius of curvature of the object side of the third lens is R5, and the radius of curvature of the image side of the third lens is R6, which satisfy the following relationship: |R6/R5| ≤ 4.7.

According to an embodiment of the present invention, the combined focal length of the fourth lens to the fifth lens is f45, and the focal length of the first lens is f1, which satisfy the following relationship: |f45/f1|≤3.0.

According to an embodiment of the present invention, an optical region on the object side of the fifth lens has a maximum radius R9T perpendicular to the optical axis, and the maximum circumference of the optical region is projected on the optical axis to have a projection point, and the projection point reaches the fifth lens. The distance between the intersection of the side of the lens and the optical axis is R9D, which satisfies the following relationship: 1.0 ≤ R9T/R9D ≤ 2.5.

According to an embodiment of the present invention, the combined focal length of the fourth lens to the fifth lens is f45, and the distance from the object side of the fourth lens to the image side of the fifth lens along the optical axis is TT45, which satisfies the following relationship: 2.0 ≤ f45/TT45 ≤ 9.0.

According to an embodiment of the present invention, the combined focal length of the fourth lens to the fifth lens is f45, and the effective focal length of the optical imaging lens group is EFL, which satisfies the following relationship: 3.72 ≤ f45/EFL ≤ 14.08.

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 combined focal length of the fourth lens to the fifth lens is f45, which satisfy the following relationship: 1.0 ≤ f1*f2 /f45 ≤ 3.0.

According to an embodiment of the present invention, the distance from the object side of the first lens to the image side of the third lens along the optical axis is TT123, and the distance from the object side of the fourth lens to the image side of the fifth lens along the optical axis It is TT45, which satisfies the following relationship: 2.0 ≤ TT123/TT45 ≤ 4.0.

According to an embodiment of the present invention, the object side surface of the second lens is convex at the paraxial position.

According to an embodiment of the present invention, the object side surface of the second lens is concave at the paraxial position.

According to an embodiment of the present invention, the image side of the fourth lens and the object side of the fifth lens are combined with each other.

According to an embodiment of the present invention, the image side of the fourth lens and the object side of the fifth lens are combined with each other by a double-shot process, and there is no gap between the image side of the fourth lens and the object side of the fifth lens. glued layer.

The present invention further provides an imaging device, which includes the aforementioned optical imaging lens group, and an image sensing element, wherein the image sensing element is arranged on the imaging surface of the optical imaging lens group.

The present invention further provides an electronic device, which includes the aforementioned imaging device.

In the following embodiments, each lens of the optical imaging lens group can be made of glass or plastic, and 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, because the glass material itself is resistant to temperature changes and high hardness, it can reduce the impact of environmental changes on the optical camera lens group, thereby prolonging the optical camera. The service life of the lens group. When the lens material is plastic, it is beneficial to reduce the weight of the optical camera lens group and reduce the production cost.

In an embodiment of the present invention, each lens includes an object side facing the subject and an image side facing the imaging plane. The surface shape of each lens is defined according to the shape of the surface near the optical axis (paraxial). For example, when describing the object side of a lens as a convex surface, it means that the object side of the lens near the optical axis is convex. , that is, although the lens surface is described as convex in the embodiments, the surface may be convex or concave in a region away from the optical axis (off-axis). The shape of each lens near the axis is judged by the curvature radius of the surface is positive or negative. For example, if the curvature radius of the object side of a lens is positive, then the object side is convex; If the radius of curvature is negative, the side of the object is concave. As far as the image side of a lens is concerned, if the radius of curvature is positive, the image side is concave; on the contrary, if the radius of curvature is negative, the image side is convex.

In an embodiment of the present invention, the object side and the image side of each lens may be spherical or aspheric surfaces. Using an aspheric surface on the lens helps to correct imaging aberrations of the optical camera lens group such as spherical aberration, and reduces the number of optical lens elements used. However, the use of aspheric lenses will increase the cost of the overall optical camera lens assembly. Although in the embodiments of the present invention, some optical lenses use spherical surfaces, they can still be designed as aspheric surfaces as required; or, some optical lenses use aspheric surfaces, but they can still be designed as aspheric surfaces as required. Design it as a spherical surface.

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

The present invention provides an optical imaging lens group, which sequentially includes a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens, and a sixth lens from the object side to the image side; wherein, the optical imaging lens The total number of lenses in the group is six.

The first lens has negative refractive power, and its object side surface is convex to increase the light-receiving area. Preferably, the first lens is made of glass, which is suitable for environmental conditions with large temperature differences, and the object side or/and image side of the first lens can be aspherical, which will help to improve spherical aberration. In an embodiment of the present invention, the object side or/and the image side of the first lens are spherical to reduce manufacturing cost and facilitate processing. The first lens system is made of low dispersion material, for example, the dispersion coefficient is greater than 40, so as to reduce chromatic aberration.

The second lens has negative refraction power, and its image side is concave to adjust the light path. The object side of the second lens can be convex or concave. Preferably, the material of the second lens is plastic, so as to reduce manufacturing cost and facilitate processing. In addition, the object side or/and the image side of the second lens can be aspherical, so as to improve spherical aberration.

The third lens has positive refractive power, wherein both the object side and the image side of the third lens are convex. Utilizing the positive refractive power of the third lens helps to gather light and correct astigmatic aberration. By adjusting the ratio of the air gap between the third lens and the fourth lens to the effective focal length of the optical imaging lens group, the thermal drift of the focal plane of the optical imaging lens group can be effectively compensated, and the thermal stability is improved. In the embodiment of the present invention, the material of the third lens can be plastic or glass. When the material of the third lens is plastic, it can reduce the manufacturing cost and facilitate processing; when the material of the third lens is glass, it can be applied to Environmental conditions with large temperature differences, and the object side or/and image side of the third lens are aspherical, which will help to improve spherical aberration. In an embodiment of the present invention, the object side or/and the image side of the third lens are spherical to reduce manufacturing cost and facilitate processing.

The fourth lens has positive refractive power, and the fifth lens has negative refractive power. The object side and the image side of the fourth lens are convex; the object side of the fifth lens is concave, and the image side is convex. Utilizing the positive refractive power of the fourth lens helps to gather light and correct astigmatic aberration; and the negative refractive power of the fifth lens can be used to balance the positive refractive power of the fourth lens. In an embodiment of the present invention, the fourth lens and the fifth lens form a composite lens, wherein the image side of the fourth lens and the object side of the fifth lens are combined with each other without an air gap. Specifically, the compound lens is formed by a double-shot process, and by using the double-shot process, the image side of the fourth lens and the object side of the fifth lens are closely combined with each other, wherein the image side of the fourth lens There is no adhesive layer between the object side and the fifth lens.

The sixth lens has positive refractive power; the object side of the sixth lens is convex, and the image side of the sixth lens can be convex. In the embodiment of the present invention, the material of the sixth lens can be plastic or glass. When the material of the sixth lens is plastic, it can reduce the manufacturing cost and facilitate processing; when the material of the sixth lens is glass, it can be applied to Environmental conditions with large temperature differences, and the object side or/and image side of the sixth lens are aspheric, which will help to improve spherical aberration.

The total number of lenses in the optical imaging lens group is six pieces; the maximum thickness from the object side of the fifth lens parallel to the optical axis to the image side is CT5m, and the minimum thickness from the object side of the fifth lens parallel to the optical axis to the image side is CT5m. The system satisfies the following relationship: 1.0 ≤ CT5M/CT5m ≤ 3.0 (1).

When the relationship (1) is satisfied, the effective focal length range of the optical imaging lens group can be flexibly changed, so as to improve the design flexibility of the optical imaging lens group.

The radius of curvature of the object side of the second lens is R3, and the radius of curvature of the image side of the second lens is R4, which satisfy the following relationship: |R3/R4| ≤ 60 (2).

When the relationship (2) is satisfied, the ratio between the radius of curvature R3 on the object side of the second lens and the radius of curvature R4 on the image side of the second lens can be adjusted to help correct the coma aberration of the optical camera lens group .

The combined focal length of the first lens to the third lens is f123, and the combined focal length of the fourth lens to the fifth lens is f45, which satisfy the following relationship: | f45/f123 | ≤ 2.0 (3).

When relational expression (3) is satisfied, the optical imaging lens group can provide better imaging quality.

An optical region on the side of the object of the fifth lens has a maximum radius R9T perpendicular to the optical axis, and the maximum circumference of the optical region is projected on the optical axis to have a projection point, which is to the object side and the optical axis of the fifth lens. The distance of the intersection point is R9D, which satisfies the following relationship: 1.0 ≤ R9T/R9D ≤ 2.5 (4).

When the relationship (4) is satisfied, the effective focal length range of the optical imaging lens group can be flexibly changed, so as to improve the design flexibility of the optical imaging lens group.

The radius of curvature of the object side of the third lens is R5, and the radius of curvature of the image side of the third lens is R6, which satisfy the following relationship: |R6/R5| ≤ 4.7(5).

When the relationship (5) is satisfied, the ratio between the radius of curvature R5 on the object side of the third lens and the radius of curvature R6 on the image side of the third lens can be controlled, which helps to correct the coma aberration of the optical imaging lens group.

The combined focal length of the fourth lens to the fifth lens is f45, and the focal length of the first lens is f1, which satisfies the following relationship: |f45/f1| ≤ 3.0 (6).

When the relationship (6) is satisfied, the optical imaging lens group can provide better imaging quality.

The radius of curvature of the object side of the fifth lens is R9, and the radius of curvature of the image side of the fifth lens is R10, which satisfy the following relationship: 4.0 ≤ R10/R9 ≤ 55.0 (7).

When the relationship (7) is satisfied, it is helpful to correct the coma aberration of the optical imaging lens group.

The combined focal length of the fourth lens to the fifth lens is f45, and the distance from the object side of the fourth lens to the image side of the fifth lens along the optical axis is TT45, which satisfies the following relationship: 2.0 ≤ f45/TT45 ≤ 9.0 (8).

The combined focal length of the fourth lens to the fifth lens is f45, and the effective focal length of the optical imaging lens group is EFL, which satisfies the following relationship: 3.72 ≤ f45/EFL ≤ 14.08 (9).

The focal length of the first lens is f1, the focal length of the second lens is f2, and the combined focal length of the fourth lens to the fifth lens is f45, which satisfy the following relationship: 1.0 ≤ f1*f2/f45 ≤ 3.0 (10) .

The distance from the object side of the first lens to the image side of the third lens along the optical axis is TT123, and the distance from the object side of the fourth lens to the image side of the fifth lens along the optical axis is TT45, which satisfies the following relationship Formula: 2.0 ≤ TT123/TT45 ≤ 4.0 (11).

When the relational expressions (8)-(11) are satisfied, the optical imaging lens group can provide better imaging quality. first embodiment

Referring to FIG. 1A and FIG. 1B , FIG. 1A is a schematic diagram of an optical imaging lens group according to a first embodiment of the present invention. FIG. 1B is, from left to right, the Astigmatism/Field Curvature, Distortion, and Longitudinal Spherical Aberration diagrams of the first embodiment of the present invention.

As shown in Figure 1A, the optical imaging lens group 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 sixth lens 16 . The optical imaging lens group 10 can further include a filter element 17 , a protective glass 18 and an imaging surface 19 . An image sensing element 100 can be further disposed on the imaging surface 19 to form an imaging device (not labeled otherwise).

The first lens 11 has a negative refractive power, the object side 11a is convex, the image side 11b is concave, and both the object side 11a and the image side 11b are spherical. The material of the first lens 11 is glass.

The second lens 12 has a negative refractive power, the object side 12a is concave, the image side 12b is concave, and both the object side 12a and the image side 12b are aspherical. The material of the second lens 12 is plastic.

The third lens 13 has a positive refractive power, the object side 13 a is convex, the image side 13 b is convex, and both the object side 13 a and the image side 13 b are spherical. The material of the third lens 13 is glass.

The fourth lens 14 has a positive refractive power, the object side 14a is convex, the image side 14b is convex, and both the object side 14a and the image side 14b are aspherical. The material of the fourth lens 14 is plastic.

The fifth lens 15 has negative refractive power, the object side 15a is concave, the image side 15b is convex, and both the object side 15a and the image side 15b are aspherical. The material of the fifth lens 15 is plastic. In the embodiment of the present invention, the fourth lens 14 and the fifth lens 15 constitute a composite lens, wherein the image side 14b of the fourth lens 14 and the object side 15a of the fifth lens 15 are combined with each other without air gap. Specifically, the composite lens is formed by a double-shot process, and the image side 14b of the fourth lens 14 and the object side 15a of the fifth lens 15 are closely combined with each other by using the double-shot process, wherein the image side of the fourth lens 14 There is no glue layer between 14b and the object side surface 15a of the fifth lens 15 . The fourth lens and the fifth lens in the subsequent embodiments also use a double-injection process to form similar compound lenses, so the description will not be repeated.

The sixth lens 16 has a positive refractive power, the object side 16a is convex, the image side 16b is convex, and both the object side 16a and the image side 16b are aspherical. The material of the sixth lens 16 is plastic.

The filter element 17 is disposed between the sixth lens 16 and the imaging surface 19 to filter out light in a specific wavelength range, such as an infrared filter (IR Filter). The two surfaces 17a, 17b of the filter element 17 are both flat and made of glass.

The protective glass 18 is disposed between the filter element 17 and the imaging surface 19 to protect the imaging surface 19 . The two surfaces 18a, 18b of the protective glass 18 are both flat and made of glass.

The image sensor 100 is, for example, a Charge-Coupled Device (CCD) Image Sensor or a Complementary Metal Oxide Semiconductor Image Sensor (CMOS Image Sensor).

其中，X：非球面上距離光軸為Y的點與非球面於光軸上之切面間的距離； Y：非球面上的點與光軸間之垂直距離； C：透鏡於近光軸處的曲率半徑之倒數； K：錐面係數；以及 Ai：第i階非球面係數，其中i = 2x，且x 為大於且等於2之自然數，即i為大於且等於4的偶數。 The curve equations of the above-mentioned aspheric surfaces are expressed as follows:

Among them, X: the distance between the point Y on the aspheric surface and the tangent plane of the aspheric surface on the optical axis; Y: the vertical distance between the point on the aspheric surface and the optical axis; C: the lens at the near optical axis The reciprocal of the curvature radius of ; K: cone coefficient; and Ai: i-th order aspheric coefficient, where i = 2x, and x is a natural number greater than and equal to 2, that is, i is an even number greater than and equal to 4.

Please refer to Table 1 below, which is the detailed optical data of the optical imaging lens group 10 according to the first embodiment of the present invention. Wherein, the object side 11a of the first lens 11 is marked as the surface 11a, and the image side 11b is marked as the surface 11b, and the other lens surfaces are deduced accordingly. The value in 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 11a to the image side 11b of the first lens 11 is 0.413 mm, which means that the thickness of the first lens 11 is 0.413 mm. mm. The distance from the image side 11b of the first lens 11 to the object side 12a of the second lens 12 is 0.225 mm. Others can be deduced in a similar manner, and will not be repeated below. In the first embodiment, the effective focal length of the optical imaging lens group 10 is EFL, the aperture value (F-number) is Fno, half of the maximum viewing angle of the overall optical imaging lens group 10 is HFOV (Half Field of View), and its values are also listed in Table 1. first embodiment EFL= 1.57 mm , Fno = 3.09 , HFOV = 100 deg surface surface type Radius of curvature (mm) Distance (mm) Refractive index Dispersion coefficient focal length(mm) material subject flat unlimited unlimited first lens 11a sphere 16.708 0.719 1.804 46.6 -5.69 Glass 11b sphere 3.535 2.690 second lens 12a Aspherical -12.079 0.753 1.537 56.0 -3.06 plastic 12b Aspherical 1.948 0.909 third lens 13a sphere 4.736 2.732 1.847 23.8 4.81 Glass 13b sphere -22.430 0.551 aperture ST unlimited 0.381 fourth lens 14a Aspherical 3.206 1.957 1.537 56.0 2.41 plastic 14b Aspherical -1.712 0.000 fifth lens 15a Aspherical -1.712 0.742 1.661 20.4 -3.45 plastic 15b Aspherical -7.876 1.054 sixth lens 16a Aspherical 7.143 1.388 1.537 56.0 5.58 plastic 16b Aspherical -4.831 0.600 filter element 17a flat unlimited 0.400 1.516 64.1 Glass 17b flat unlimited 1.320 protective glass 18a flat unlimited 0.400 1.516 64.1 Glass 18b flat unlimited 0.111 imaging surface 19 flat unlimited Reference wavelength: 555 nm Table I

Please refer to Table 2 below, which shows the aspheric coefficients of each lens surface in the first embodiment of the present invention. Among them, K is the cone coefficient in the aspheric curve equation, and A ₄ to A ₁₆ represent the 4th to 16th order aspheric coefficients of each surface. For example, the conic coefficient K of the object side surface 12 a of the second lens 12 is 6.41. Others can be deduced in a similar manner, and will not be repeated below. In addition, the tables of the following embodiments are corresponding to the optical imaging lens groups 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 surface 12a 12b 14a 14b K 6.41E+00 -1.98E+00 1.25E+00 -1.73E-01 A ₄ 3.61E-03 1.57E-02 -5.24E-03 -2.84E-02 A ₆ -1.07E-03 -2.91E-03 -2.14E-03 2.38E-02 A ₈ 1.07E-04 -1.01E-04 3.54E-03 -2.81E-03 A ₁₀ -4.03E-06 5.40E-05 -1.74E-03 -2.93E-03 A ₁₂ 0.00E+00 0.00E+00 0.00E+00 8.85E-04 A ₁₄ 0.00E+00 0.00E+00 0.00E+00 3.33E-04 A ₁₆ 0.00E+00 0.00E+00 0.00E+00 -8.06E-05 surface 15a 15b 16a 16b K -1.73E-01 6.31E+00 0.00E+00 0.00E+00 A ₄ -2.84E-02 -4.57E-03 -8.18E-03 1.04E-02 A ₆ 2.38E-02 2.74E-03 -9.76E-04 -6.17E-04 A ₈ -2.81E-03 -2.47E-04 1.29E-04 -1.84E-05 A ₁₀ -2.93E-03 7.30E-05 -2.11E-05 1.19E-05 A ₁₂ 8.85E-04 -3.62E-06 0.00E+00 0.00E+00 A ₁₄ 3.33E-04 -1.26E-06 0.00E+00 0.00E+00 A ₁₆ -8.06E-05 3.42E-08 0.00E+00 0.00E+00 Table II

Please refer to FIG. 8, in the first embodiment, the maximum thickness from the object side 15a of the fifth lens 15 parallel to the optical axis I to the image side 15b is CT5M, and the object side 15a of the fifth lens 15 is parallel to the optical axis I to the image side 15b The minimum thickness is CT5m, CT5M/CT5m = 1.61. In addition, the definitions of CT5M and CT5m in subsequent embodiments are the same as those in this embodiment, so they will not be repeated in subsequent embodiments.

In the first embodiment, the radius of curvature of the object side 12a of the second lens 12 is R3, the radius of curvature of the image side 12b of the second lens 12 is R4, and |R3/R4|=6.20.

In the first embodiment, the combined focal length of the first lens 11 to the third lens 13 is f123, the combined focal length of the fourth lens 14 to the fifth lens 15 is f45, and |f45/f123|=1.06.

Please refer to FIG. 8 , in the first embodiment, an optical region 15ao of the object side surface 15a of the fifth lens 15 is perpendicular to the optical axis I and has a maximum radius R9T, and the maximum circumference R9M of the optical region 15ao projected on the optical axis I has A projection point P1, the distance from the projection point P1 to the intersection point P2 of the object side surface 15a of the fifth lens 15 and the optical axis I is R9D, R9T/R9D=2.35. In addition, the definitions of R9T and R9D in the subsequent embodiments are the same as those in this embodiment, so they will not be repeated in the subsequent embodiments.

In the first embodiment, the radius of curvature of the object side 13a of the third lens 13 is R5, the radius of curvature of the image side 13b of the third lens 13 is R6, and |R6/R5|=4.74.

In the first embodiment, the combined focal length of the fourth lens 14 to the fifth lens 15 is f45, the focal length of the first lens 11 is f1, |f45/f1|=1.02.

In the first embodiment, the radius of curvature of the object side 15a of the fifth lens 15 is R9, the radius of curvature of the image side 15b of the fifth lens 15 is R10, R10/R9=4.60.

In the first embodiment, the combined focal length of the fourth lens 14 to the fifth lens 15 is f45, the distance from the object side 14a of the fourth lens 14 to the image side 15b of the fifth lens 15 along the optical axis I is TT45, f45/ TT45 = 2.16.

In the first embodiment, the combined focal length of the fourth lens 14 to the fifth lens 15 is f45, the effective focal length of the optical imaging lens group 10 is EFL, and f45/EFL=3.72.

In the first embodiment, the focal length of the first lens 11 is f1, the focal length of the second lens 12 is f2, the combined focal length of the fourth lens 14 to the fifth lens 15 is f45, f1*f2/f45 = 2.98.

In the first embodiment, the distance from the object side 11a of the first lens 11 to the image side 13b of the third lens 13 along the optical axis I is TT123, and the object side 14a of the fourth lens 14 is along the optical axis I to the fifth lens 15 The distance between the image side 15b is TT45, TT123/TT45=2.89.

It can be seen from the numerical values of the above relational expressions that the optical imaging lens assembly 10 of the first embodiment satisfies the requirements of the relational expressions (1) to (11).

Referring to FIG. 1B , from left to right in the figure are the astigmatism field curve diagram, F-θ distortion diagram and longitudinal spherical aberration diagram of the optical imaging lens group 10 . It can be seen from the longitudinal spherical aberration diagram that the off-axis rays of the three visible light wavelengths of 470 nm, 555 nm, and 650 nm at different heights can be concentrated near the imaging point, and the deviation of the imaging point can be controlled within + 0.15 mm. From the F-θ distortion aberration diagram (wavelength 555 nm), it can be seen that the F-θ distortion rate of the optical imaging lens group 10 is less than + 15%. From the astigmatism and field curvature aberration diagram (wavelength 555 nm), it can be seen that the focal length variation of the sagittal direction aberration in the entire field of view is within + 0.2 mm; The focal length variation is within + 1.0 mm. As shown in FIG. 1B , the optical imaging lens group 10 of this embodiment has well corrected various aberrations and meets the imaging quality requirements of the optical system. second embodiment

Referring to FIG. 2A and FIG. 2B , FIG. 2A is a schematic diagram of an optical imaging lens group according to a second embodiment of the present invention. FIG. 2B is, from left to right, the astigmatism/Field Curvature diagram, the distortion diagram (Distortion) and the longitudinal spherical aberration diagram (Longitudinal Spherical Aberration) of the second embodiment of the present invention.

As shown in Figure 2A, the optical imaging lens group 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 sixth lens 26 . The optical camera lens group 20 can further include a filter element 27 , a protective glass 28 and an imaging surface 29 . An image sensing element 200 can be further disposed on the imaging surface 29 to form an imaging device (not labeled otherwise).

The first lens 21 has negative refractive power, the object side 21a is convex, the image side 21b is concave, and both the object side 21a and the image side 21b are spherical. The material of the first lens 21 is glass.

The second lens 22 has a negative refractive power, the object side 22 a is concave, the image side 22 b is concave, and both the object side 22 a and the image side 22 b are aspherical. The material of the second lens 22 is plastic.

The third lens 23 has positive refractive power, the object side 23a is convex, the image side 23b is convex, and both the object side 23a and the image side 23b are spherical. The material of the third lens 23 is glass.

The fourth lens 24 has a positive refractive power, the object side 24a is convex, the image side 24b is convex, and both the object side 24a and the image side 24b are aspherical. The material of the fourth lens 24 is plastic.

The fifth lens 25 has negative refractive power. The object side 25 a is concave, the image side 25 b is convex, and both the object side 25 a and the image side 25 b are aspherical. The material of the fifth lens 25 is plastic.

The sixth lens 26 has a positive refractive power. The object side 26 a is convex, the image side 26 b is convex, and both the object side 26 a and the image side 26 b are aspherical. The material of the sixth lens 26 is plastic.

The filter element 27 is disposed between the sixth lens 26 and the imaging surface 29 to filter out light in a specific wavelength range, such as an infrared filter (IR Filter). The two surfaces 27a, 27b of the filter element 27 are both flat and made of glass.

The protective glass 28 is disposed between the filter element 27 and the imaging surface 29 to protect the imaging surface 29 . The two surfaces 28a, 28b of the protective glass 28 are both flat and made of glass.

The image sensor 200 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 and the aspheric coefficient of the lens surface of the optical imaging lens group 20 of the second embodiment are listed in Table 3 and Table 4 respectively. In the second embodiment, the curve equation of the aspheric surface is expressed in the form of the first embodiment. second embodiment EFL= 1.57 mm , Fno = 3.02 , HFOV = 100 deg surface surface type Radius of curvature (mm) Distance (mm) Refractive index Dispersion coefficient focal length(mm) material subject flat unlimited unlimited first lens 21a sphere 15.892 0.567 1.804 46.6 -5.71 Glass 21b sphere 3.518 2.968 second lens 22a Aspherical -12.146 1.476 1.537 56.0 -2.84 plastic 22b Aspherical 1.828 0.972 third lens 23a sphere 4.272 2.200 1.847 23.8 4.22 Glass 23b sphere -17.383 0.455 aperture ST unlimited 0.270 fourth lens 24a Aspherical 3.380 2.004 1.537 56.0 2.40 plastic 24b Aspherical -1.656 0.000 fifth lens 25a Aspherical -1.656 1.000 1.661 20.4 -3.29 plastic 25b Aspherical -8.341 1.193 sixth lens 26a Aspherical 7.379 1.439 1.537 56.0 5.79 plastic 26b Aspherical -5.042 0.600 filter element 27a flat unlimited 0.400 1.516 64.1 Glass 27b flat unlimited 1.130 protective glass 28a flat unlimited 0.400 1.516 64.1 Glass 28b flat unlimited 0.126 imaging surface 29 flat unlimited Reference wavelength: 555 nm Table three Aspheric coefficient of the second embodiment surface 22a 22b 24a 24b K 7.36E+00 -1.78E+00 1.64E+00 -1.66E-01 A ₄ 2.33E-03 1.46E-02 -2.79E-03 -7.04E-02 A ₆ -8.62E-04 -2.75E-03 -1.87E-03 3.64E-02 A ₈ 1.10E-04 2.50E-04 9.93E-04 -1.52E-03 A ₁₀ -5.31E-06 4.59E-06 -5.86E-04 -4.14E-03 A ₁₂ 0.00E+00 0.00E+00 0.00E+00 8.65E-04 A ₁₄ 0.00E+00 0.00E+00 0.00E+00 4.55E-04 A ₁₆ 0.00E+00 0.00E+00 0.00E+00 -7.08E-05 surface 25a 25b 26a 26b K -1.66E-01 5.42E+00 0.00E+00 0.00E+00 A ₄ -7.04E-02 -8.08E-03 -2.14E-03 1.79E-02 A ₆ 3.64E-02 3.85E-03 -1.82E-03 -1.64E-03 A ₈ -1.52E-03 -2.69E-04 4.16E-05 -1.40E-04 A ₁₀ -4.14E-03 5.49E-05 5.76E-06 2.93E-05 A ₁₂ 8.65E-04 -5.49E-06 0.00E+00 0.00E+00 A ₁₄ 4.55E-04 -1.24E-06 0.00E+00 0.00E+00 A ₁₆ -7.08E-05 8.71E-08 0.00E+00 0.00E+00 Table four

In the second embodiment, the values of the relational expressions of the optical imaging lens group 20 are listed in Table 5. It can be seen from Table 5 that the optical imaging lens group 20 of the second embodiment satisfies the requirements of relational expressions (1) to (11). second embodiment No. Relational value 1 CT5M/CT5m 1.49 2 R3/R4 -6.64 3 f45/f123 -0.79 4 R9T/R9D 2.16 5 ∣R6/R5∣ 4.07 6 ∣f45/f1∣ 1.12 7 R10/R9 5.04 8 f45/TT45 2.13 9 f45/EFL 4.06 10 f1*f2/f45 2.55 11 TT123/TT45 2.32 Table five

Referring to FIG. 2B , from left to right in the figure are the astigmatic field curvature aberration diagram, F-θ distortion aberration diagram and longitudinal spherical aberration diagram of the optical imaging lens group 20 . It can be seen from the longitudinal spherical aberration diagram that the off-axis rays of the three visible light wavelengths of 470 nm, 555 nm, and 650 nm at different heights can be concentrated near the imaging point, and the deviation of the imaging point can be controlled within + 0.03 mm. From the F-θ distortion aberration diagram (wavelength 555 nm), it can be seen that the F-θ distortion rate of the optical imaging lens group 20 is less than + 12%. From the astigmatism and field curvature aberration diagram (wavelength 555 nm), it can be seen that the focal length variation of the sagittal direction aberration in the entire field of view is within + 0.02 mm; The focal length variation is within + 0.10 mm. As shown in FIG. 2B , the optical imaging lens group 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 imaging lens group according to a third embodiment of the present invention. FIG. 3B shows the Astigmatism/Field Curvature, Distortion and Longitudinal Spherical Aberration of the third embodiment of the present invention in order from left to right.

As shown in Figure 3A, the optical imaging lens group 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 sixth lens 36 . The optical camera lens group 30 can further include a filter element 37 , a protective glass 38 and an imaging surface 39 . An image sensing element 300 can be further disposed on the imaging surface 39 to form an imaging device (not labeled otherwise).

The first lens 31 has a negative refractive power, the object side 31 a is convex, the image side 31 b is concave, and both the object side 31 a and the image side 31 b are spherical. The material of the first lens 31 is glass.

The second lens 32 has a negative refractive power, the object side 32 a is concave, the image side 32 b is concave, and both the object side 32 a and the image side 32 b are aspherical. The material of the second lens 32 is plastic.

The third lens 33 has a positive refractive power, the object side 33a is convex, the image side 33b is convex, and both the object side 33a and the image side 33b are spherical. The material of the third lens 33 is glass.

The fourth lens 34 has a positive refractive power, the object side 34a is convex, the image side 34b is convex, and both the object side 34a and the image side 34b are aspherical. The material of the fourth lens 34 is plastic.

The fifth lens 35 has negative refractive power, the object side 35a is concave, the image side 35b is convex, and both the object side 35a and the image side 35b are aspherical. The material of the fifth lens 35 is plastic.

The sixth lens 36 has a positive refractive power, the object side 36a is convex, the image side 36b is convex, and both the object side 36a and the image side 36b are aspherical. The sixth lens 36 is made of plastic.

The filter element 37 is disposed between the sixth lens 36 and the imaging surface 39 to filter out light in a specific wavelength range, such as an infrared filter (IR Filter). The two surfaces 37a, 37b of the filter element 37 are both flat and made of glass.

The protective glass 38 is disposed between the filter element 37 and the imaging surface 39 to protect the imaging surface 39 . The two surfaces 38a, 38b of the protective glass 38 are both flat and made of glass.

The image sensor 300 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 and the aspheric coefficient of the lens surface of the optical imaging lens group 30 of the third embodiment are listed in Table 6 and Table 7 respectively. In the third embodiment, the curve equation of the aspheric surface is expressed in the form of the first embodiment. third embodiment EFL= 1.66 mm , Fno = 2.34 , HFOV = 100 deg surface surface type Radius of curvature (mm) Distance (mm) Refractive index Dispersion coefficient focal length(mm) material subject flat unlimited unlimited first lens 31a sphere 14.878 0.601 1.804 46.6 -6.45 Glass 31b sphere 3.788 2.815 second lens 32a Aspherical -11.232 0.653 1.537 56.0 -2.75 plastic 32b Aspherical 1.744 1.122 third lens 33a sphere 4.037 3.443 1.847 23.8 4.04 Glass 33b sphere -14.200 0.239 aperture ST unlimited 0.112 fourth lens 34a Aspherical 3.849 1.699 1.537 56.0 2.39 plastic 34b Aspherical -1.631 0.000 fifth lens 35a Aspherical -1.631 1.122 1.661 20.4 -2.92 plastic 35b Aspherical -12.811 0.796 sixth lens 36a Aspherical 4.754 1.720 1.537 56.0 5.54 plastic 36b Aspherical -7.010 0.600 filter element 37a flat unlimited 0.400 1.516 64.1 Glass 37b flat unlimited 1.180 protective glass 38a flat unlimited 0.400 1.516 64.1 Glass 38b flat unlimited 0.122 imaging surface 39 flat unlimited Reference wavelength: 555 nm Table six Aspheric coefficient of the third embodiment surface 32a 32b 34a 34b K 1.47E+00 -1.54E+00 2.24E+00 -1.65E-01 A ₄ 2.89E-03 2.02E-02 -7.85E-04 -3.06E-02 A ₆ -7.11E-04 -2.54E-03 -3.80E-03 1.27E-02 A ₈ 7.70E-05 2.51E-04 4.80E-03 2.01E-03 A ₁₀ -3.39E-06 -2.16E-05 -2.23E-03 -3.63E-03 A ₁₂ 0.00E+00 0.00E+00 0.00E+00 4.67E-04 A ₁₄ 0.00E+00 0.00E+00 0.00E+00 4.24E-04 A ₁₆ 0.00E+00 0.00E+00 0.00E+00 1.36E-04 surface 35a 35b 36a 36b K -1.65E-01 2.03E+01 0.00E+00 0.00E+00 A ₄ -3.06E-02 -8.72E-03 -1.58E-02 3.98E-03 A ₆ 1.27E-02 2.12E-03 -2.23E-04 -1.28E-03 A ₈ 2.01E-03 -1.41E-05 -1.52E-04 1.59E-05 A ₁₀ -3.63E-03 5.40E-05 3.00E-05 1.69E-05 A ₁₂ 4.67E-04 -6.01E-06 0.00E+00 0.00E+00 A ₁₄ 4.24E-04 -6.12E-07 0.00E+00 0.00E+00 A ₁₆ 1.36E-04 -1.08E-08 0.00E+00 0.00E+00 Table Seven

In the third embodiment, the values of the relational expressions of the optical imaging lens group 30 are listed in Table 8. It can be seen from Table 8 that the optical imaging lens group 30 of the third embodiment satisfies the requirements of relational expressions (1) to (11). third embodiment No. Relational value 1 CT5M/CT5m 1.49 2 R3/R4 -6.44 3 f45/f123 -0.40 4 R9T/R9D 2.13 5 ∣R6/R5∣ 3.52 6 ∣f45/f1∣ 1.35 7 R10/R9 7.85 8 f45/TT45 3.09 9 f45/EFL 5.26 10 f1*f2/f45 2.04 11 TT123/TT45 3.06 table eight

Referring to FIG. 3B , from left to right in the figure are the astigmatism field curve diagram, F-θ distortion aberration diagram and longitudinal spherical aberration diagram of the optical imaging lens group 30 . It can be seen from the longitudinal spherical aberration diagram that the off-axis rays of the three visible light wavelengths of 470 nm, 555 nm, and 650 nm at different heights can be concentrated near the imaging point, and the deviation of the imaging point can be controlled within + 0.5 mm. From the F-θ distortion aberration diagram (wavelength 555 nm), it can be seen that the F-θ distortion rate of the optical imaging lens group 30 is less than + 5.0%. From the astigmatism and field curvature aberration diagram (wavelength 555 nm), it can be seen that the focal length variation of the sagittal direction aberration in the entire field of view is within + 0.05 mm; The focal length variation is within + 0.05 mm. As shown in FIG. 3B , the optical imaging lens group 30 of this embodiment has well corrected various aberrations and meets the imaging quality requirements of the optical system. Fourth embodiment

Referring to FIG. 4A and FIG. 4B, FIG. 4A is a schematic diagram of an optical imaging lens group according to a fourth embodiment of the present invention. FIG. 4B shows the astigmatism/field curvature diagram (Astigmatism/Field Curvature), distortion diagram (Distortion) and longitudinal spherical aberration diagram (Longitudinal Spherical Aberration) of the fourth embodiment of the present invention in order from left to right.

As shown in Figure 4A, the optical imaging lens group 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 sixth lens 46 . The optical camera lens group 40 can further include a filter element 47 , a protective glass 48 and an imaging surface 49 . An image sensing element 400 can be further disposed on the imaging surface 49 to form an imaging device (not labeled otherwise).

The first lens 41 has negative refractive power, the object side 41a is convex, the image side 41b is concave, and both the object side 41a and the image side 41b are spherical. The material of the first lens 41 is glass.

The second lens 42 has a negative refractive power. The object side 42 a is convex, the image side 42 b is concave, and both the object side 42 a and the image side 42 b are aspherical. The material of the second lens 42 is plastic.

The third lens 43 has a positive refractive power, the object side 43a is convex, the image side 43b is convex, and both the object side 43a and the image side 43b are spherical. The material of the third lens 43 is glass.

The fourth lens 44 has a positive refractive power, the object side 44a is convex, the image side 44b is convex, and both the object side 44a and the image side 44b are aspherical. The material of the fourth lens 44 is plastic.

The fifth lens 45 has negative refractive power, the object side 45a is concave, the image side 45b is convex, and both the object side 45a and the image side 45b are aspherical. The material of the fifth lens 45 is plastic.

The sixth lens 46 has a positive refractive power. The object side 46 a is convex, the image side 46 b is convex, and both the object side 46 a and the image side 46 b are aspherical. The sixth lens 46 is made of plastic.

The filter element 47 is disposed between the sixth lens 46 and the imaging surface 49 to filter out light in a specific wavelength range, such as an infrared filter (IR Filter). The two surfaces 47a, 47b of the filter element 47 are both flat and made of glass.

The protective glass 48 is disposed between the filter element 47 and the imaging surface 49 to protect the imaging surface 49 . The two surfaces 48a, 48b of the protective glass 48 are both flat and made of glass.

The image sensor 400 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 and aspheric coefficients of the lens surface of the optical imaging lens group 40 of the fourth embodiment are listed in Table 9 and Table 10, respectively. In the fourth embodiment, the curve equation of the aspheric surface is expressed in the form of the first embodiment. Fourth embodiment EFL= 1.73 mm , Fno = 2.02 , HFOV = 101.5 deg surface surface type Radius of curvature (mm) Distance (mm) Refractive index Dispersion coefficient focal length(mm) material subject flat unlimited unlimited first lens 41a sphere 15.177 0.600 1.804 46.6 -6.84 Glass 41b sphere 3.977 2.442 second lens 42a Aspherical 98.676 0.728 1.537 56.0 -3.18 plastic 42b Aspherical 1.680 1.200 third lens 43a sphere 5.281 3.992 1.847 23.8 4.37 Glass 43b sphere -8.275 0.152 aperture ST unlimited 0.133 fourth lens 44a Aspherical 4.996 1.795 1.537 56.0 2.68 plastic 44b Aspherical -1.777 0.000 fifth lens 45a Aspherical -1.777 0.723 1.661 20.4 -3.03 plastic 45b Aspherical -16.944 1.004 sixth lens 46a Aspherical 3.304 1.732 1.537 56.0 5.63 plastic 46b Aspherical -30.535 0.600 filter element 47a flat unlimited 0.400 1.516 64.1 Glass 47b flat unlimited 1.100 protective glass 48a flat unlimited 0.400 1.516 64.1 Glass 48b flat unlimited 0.119 imaging surface 49 flat unlimited Reference wavelength: 555 nm Table nine The aspheric coefficient of the fourth embodiment surface 42a 42b 44a 44b K -8.18E+04 -1.75E+00 3.44E+00 -2.48E-02 A ₄ -3.13E-03 2.28E-02 4.89E-04 -1.73E-02 A ₆ 1.52E-04 -2.37E-03 -1.34E-03 2.67E-03 A ₈ -5.06E-06 2.12E-04 1.74E-03 7.22E-03 A ₁₀ 3.39E-08 -1.71E-05 -5.17E-04 -2.25E-03 A ₁₂ 0.00E+00 0.00E+00 0.00E+00 -1.46E-03 A ₁₄ 0.00E+00 0.00E+00 0.00E+00 5.95E-04 A ₁₆ 0.00E+00 0.00E+00 0.00E+00 2.45E-05 surface 45a 45b 46a 46b K -2.48E-02 4.28E+01 -6.40E-04 -4.66E-01 A ₄ -1.73E-02 -1.53E-02 -2.21E-02 -7.88E-05 A ₆ 2.67E-03 5.44E-03 2.64E-03 2.81E-04 A ₈ 7.22E-03 -1.00E-03 -8.17E-04 -3.55E-04 A ₁₀ -2.25E-03 1.40E-05 6.32E-05 3.69E-05 A ₁₂ -1.46E-03 3.55E-05 0.00E+00 0.00E+00 A ₁₄ 5.95E-04 -2.55E-06 0.00E+00 0.00E+00 A ₁₆ 2.45E-05 -2.17E-07 0.00E+00 0.00E+00 table ten

In the fourth embodiment, the values of the relational expressions of the optical imaging lens group 40 are listed in Table 11. It can be seen from Table 11 that the optical imaging lens group 40 of the fourth embodiment satisfies the requirements of relational expressions (1) to (11). Fourth embodiment No. Relational value 1 CT5M/CT5m 1.94 2 R3/R4 58.73 3 f45/f123 0.31 4 R9T/R9D 1.92 5 ∣R6/R5∣ 1.57 6 ∣f45/f1∣ 1.87 7 R10/R9 9.54 8 f45/TT45 5.07 9 f45/EFL 7.40 10 f1*f2/f45 1.70 11 TT123/TT45 3.56 Table Eleven

Referring to FIG. 4B , from left to right in the figure are the astigmatism field curve diagram, F-θ distortion aberration diagram and longitudinal spherical aberration diagram of the optical imaging lens group 40 . It can be seen from the longitudinal spherical aberration diagram that the off-axis rays of the three visible light wavelengths of 470 nm, 555 nm, and 650 nm at different heights can be concentrated near the imaging point, and the deviation of the imaging point can be controlled within + 0.03 mm. From the F-θ distortion aberration diagram (wavelength 555 nm), it can be seen that the F-θ distortion rate of the optical imaging lens group 40 is less than + 5.0%. From the astigmatism and field curvature aberration diagram (wavelength 555 nm), it can be seen that the focal length variation of the sagittal direction aberration in the entire field of view is within + 0.10 mm; The focal length variation is within + 0.15 mm. As shown in FIG. 4B , the optical imaging lens group 40 of this embodiment has well corrected various aberrations and meets the imaging quality requirements of the optical system. fifth embodiment

Referring to FIG. 5A and FIG. 5B , FIG. 5A is a schematic diagram of an optical imaging lens group according to a fifth embodiment of the present invention. FIG. 5B is, from left to right, the astigmatism/field curvature diagram, distortion diagram (Distortion) and longitudinal spherical aberration diagram (Longitudinal Spherical Aberration) of the fifth embodiment of the present invention.

As shown in FIG. 5A, the optical imaging lens group 50 of the fifth embodiment includes a first lens 51, a second lens 52, a third lens 53, an aperture ST, a fourth lens 54, and a fifth lens in sequence from the object side to the image side. lens 55 and sixth lens 56 . The optical camera lens group 50 can further include a filter element 57 , a protective glass 58 and an imaging surface 59 . An image sensing element 500 can be further disposed on the imaging surface 59 to form an imaging device (not otherwise labeled).

The first lens 51 has a negative refractive power, the object side 51a is convex, the image side 51b is concave, and both the object side 51a and the image side 51b are spherical. The material of the first lens 51 is glass.

The second lens 52 has negative refractive power. The object side 52 a is convex, the image side 52 b is concave, and both the object side 52 a and the image side 52 b are aspherical. The material of the second lens 52 is plastic.

The third lens 53 has a positive refractive power, the object side 53 a is convex, the image side 53 b is convex, and both the object side 53 a and the image side 53 b are spherical. The material of the third lens 53 is glass.

The fourth lens 54 has a positive refractive power, the object side 54a is convex, the image side 54b is convex, and both the object side 54a and the image side 54b are aspherical. The material of the fourth lens 54 is plastic.

The fifth lens 55 has negative refractive power, the object side 55a is concave, the image side 55b is convex, and both the object side 55a and the image side 55b are aspherical. The material of the fifth lens 55 is plastic.

The sixth lens 56 has a positive refractive power, the object side 56a is convex, the image side 56b is convex, and both the object side 56a and the image side 56b are aspherical. The material of the sixth lens 56 is plastic.

The filter element 57 is disposed between the sixth lens 56 and the imaging surface 59 to filter out light in a specific wavelength range, such as an infrared filter (IR Filter). The two surfaces 57a, 57b of the filter element 57 are both flat and made of glass.

The protective glass 58 is disposed between the filter element 57 and the imaging surface 59 to protect the imaging surface 59 . The two surfaces 58a, 58b of the protective glass 58 are both flat and made of glass.

The image sensor 500 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 and aspheric coefficients of the lens surface of the optical imaging lens group 50 of the fifth embodiment are listed in Table 12 and Table 13, respectively. In the fifth embodiment, the curve equation of the aspheric surface is expressed in the form of the first embodiment. fifth embodiment EFL= 1.57 mm , Fno = 2.08 , HFOV = 100 deg surface surface type Radius of curvature (mm) Distance (mm) Refractive index Dispersion coefficient focal length(mm) material subject flat unlimited unlimited first lens 51a sphere 20.891 0.600 1.804 46.6 -7.58 Glass 51b sphere 4.671 1.482 second lens 52a Aspherical 4.402 1.108 1.537 56.0 -3.76 plastic 52b Aspherical 1.266 2.548 third lens 53a sphere 6.506 3.871 1.847 23.8 5.04 Glass 53b sphere -9.226 -0.003 aperture ST unlimited 0.464 fourth lens 54a Aspherical 5.218 2.072 1.537 56.0 2.69 plastic 54b Aspherical -1.724 0.000 fifth lens 55a Aspherical -1.724 0.584 1.661 20.4 -2.64 plastic 55b Aspherical -90.850 0.672 sixth lens 56a Aspherical 3.299 1.522 1.537 56.0 4.64 plastic 56b Aspherical -8.643 0.600 filter element 57a flat unlimited 0.400 1.516 64.1 Glass 57b flat unlimited 1.070 protective glass 58a flat unlimited 0.400 1.516 64.1 Glass 58b flat unlimited 0.118 imaging surface 59 flat unlimited Reference wavelength: 555 nm Table 12 Aspherical coefficient of the fifth embodiment surface 52a 52b 54a 54b K -2.32E+00 -1.26E+00 3.47E+00 1.40E-03 A ₄ -2.86E-03 2.19E-02 -8.19E-05 -1.45E-02 A ₆ 1.45E-05 -1.35E-03 -8.88E-04 -8.65E-04 A ₈ 7.44E-07 -1.88E-04 1.91E-03 3.75E-03 A ₁₀ -7.23E-08 1.11E-05 -6.93E-04 -5.28E-04 A ₁₂ 0.00E+00 0.00E+00 0.00E+00 -1.52E-03 A ₁₄ 0.00E+00 0.00E+00 0.00E+00 6.08E-04 A ₁₆ 0.00E+00 0.00E+00 0.00E+00 3.39E-05 surface 55a 55b 56a 56b K 1.40E-03 -1.64E-01 -6.71E-01 -8.62E+01 A ₄ -1.45E-02 -1.68E-02 -1.89E-02 -8.81E-03 A ₆ -8.65E-04 3.95E-03 2.06E-03 2.54E-03 A ₈ 3.75E-03 -3.45E-04 -3.34E-04 -4.85E-04 A ₁₀ -5.28E-04 -1.29E-04 1.32E-05 3.51E-05 A ₁₂ -1.52E-03 7.79E-06 0.00E+00 0.00E+00 A ₁₄ 6.08E-04 1.23E-05 0.00E+00 0.00E+00 A ₁₆ 3.39E-05 -1.74E-06 0.00E+00 0.00E+00 Table 13

In the fifth embodiment, the values of the relational expressions of the optical imaging lens group 50 are listed in Table 14. It can be known from Table 14 that the optical imaging lens group 50 of the fifth embodiment satisfies the requirements of relational expressions (1) to (11). fifth embodiment No. Relational value 1 CT5M/CT5m 2.55 2 R3/R4 3.48 3 f45/f123 1.89 4 R9T/R9D 1.60 5 ∣R6/R5∣ 1.42 6 ∣f45/f1∣ 2.91 7 R10/R9 52.69 8 f45/TT45 8.30 9 f45/EFL 14.08 10 f1*f2/f45 1.29 11 TT123/TT45 3.62 Table Fourteen

Referring to FIG. 5B , from left to right in the figure are the astigmatism field curve diagram, F-θ distortion aberration diagram and longitudinal spherical aberration diagram of the optical imaging lens group 50 . It can be seen from the longitudinal spherical aberration diagram that the off-axis rays of the three visible light wavelengths of 470 nm, 555 nm, and 650 nm at different heights can be concentrated near the imaging point, and the deviation of the imaging point can be controlled within + 0.015mm. From the F-θ distortion aberration diagram (wavelength 555 nm), it can be seen that the F-θ distortion rate of the optical imaging lens group 50 is less than + 15%. From the astigmatism and field curvature aberration diagram (wavelength 555 nm), it can be seen that the focal length variation of the sagittal direction aberration in the entire field of view is within + 0.1 mm; The focal length variation is within + 0.2 mm. As shown in FIG. 5B , the optical imaging lens group 50 of this embodiment has well corrected various aberrations and meets the imaging quality requirements of the optical system. Sixth embodiment

Referring to FIG. 6A and FIG. 6B , FIG. 6A is a schematic diagram of an optical imaging lens group according to a sixth embodiment of the present invention. Fig. 6B is, from left to right, the diagram of Longitudinal Spherical Aberration, Astigmatism/Field Curvature and Distortion of the sixth embodiment of the present invention.

As shown in FIG. 6A, the optical imaging lens group 60 of the sixth embodiment includes a first lens 61, a second lens 62, a third lens 63, a diaphragm ST, a fourth lens 64, and a fifth lens in sequence from the object side to the image side. lens 65 and sixth lens 66 . The optical camera lens group 60 can further include a filter element 67 , a protective glass 68 and an imaging surface 69 . An image sensing element 600 can be further disposed on the imaging surface 69 to form an imaging device (not labeled otherwise).

The first lens 61 has a negative refractive power, the object side 61a is convex, the image side 61b is concave, and both the object side 61a and the image side 61b are spherical. The material of the first lens 61 is glass.

The second lens 62 has a negative refractive power. The object side 62 a is convex, the image side 62 b is concave, and both the object side 62 a and the image side 62 b are aspherical. The material of the second lens 62 is plastic.

The third lens 63 has a positive refractive power, the object side 63 a is convex, the image side 63 b is convex, and both the object side 63 a and the image side 63 b are spherical. The material of the third lens 63 is glass.

The fourth lens 64 has a positive refractive power, the object side 64 a is convex, the image side 64 b is convex, and both the object side 64 a and the image side 64 b are aspherical. The material of the fourth lens 64 is plastic.

The fifth lens 65 has a negative refractive power. The object side 65 a is concave, the image side 65 b is convex, and both the object side 65 a and the image side 65 b are aspherical. The material of the fifth lens 65 is plastic.

The sixth lens 66 has a positive refractive power, the object side 66a is convex, the image side 66b is convex, and both the object side 66a and the image side 66b are aspherical. The material of the sixth lens 66 is plastic.

The filter element 67 is disposed between the sixth lens 66 and the imaging surface 69 to filter out light in a specific wavelength range, such as an infrared filter (IR Filter). The two surfaces 67a, 67b of the filter element 67 are both flat and made of glass.

The protective glass 68 is disposed between the filter element 67 and the imaging surface 69 to protect the imaging surface 69 . The two surfaces 68a and 68b of the protective glass 68 are both flat and made of glass.

The image sensor 600 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 and aspheric coefficients of the lens surface of the optical imaging lens group 60 of the sixth embodiment are listed in Table 15 and Table 16, respectively. In the sixth embodiment, the curve equation of the aspheric surface is expressed in the form of the first embodiment. Sixth embodiment EFL= 1.72 mm , Fno = 2.02 , HFOV = 100 deg surface surface type Radius of curvature (mm) Distance (mm) Refractive index Dispersion coefficient focal length(mm) material subject flat unlimited unlimited first lens 61a sphere 14.899 0.600 1.804 46.6 -6.95 Glass 61b sphere 4.004 2.428 second lens 62a Aspherical 71.999 0.755 1.537 56.0 -3.15 plastic 62b Aspherical 1.652 1.211 third lens 63a sphere 5.275 4.055 1.847 23.8 4.38 Glass 63b sphere -8.289 0.085 aperture ST unlimited 0.139 fourth lens 64a Aspherical 4.966 1.795 1.537 56.0 2.69 plastic 64b Aspherical -1.784 0.000 fifth lens 65a Aspherical -1.784 0.696 1.661 20.4 -3.04 plastic 65b Aspherical -17.282 1.004 sixth lens 66a Aspherical 3.299 1.719 1.537 56.0 5.65 plastic 66b Aspherical -32.020 0.600 filter element 67a flat unlimited 0.400 1.516 64.1 Glass 67b flat unlimited 1.100 protective glass 68a flat unlimited 0.400 1.516 64.1 Glass 68b flat unlimited 0.116 imaging surface 69 flat unlimited Reference wavelength: 555 nm Table 15 Aspheric Coefficient of the Sixth Embodiment surface 62a 62b 64a 64b K -1.94E+04 -1.73E+00 3.54E+00 -2.06E-02 A ₄ -3.08E-03 2.31E-02 6.56E-04 -1.76E-02 A ₆ 1.55E-04 -2.29E-03 -1.52E-03 3.26E-03 A ₈ -4.85E-06 2.21E-04 1.69E-03 7.23E-03 A ₁₀ 4.19E-09 -2.02E-05 -4.91E-04 -2.20E-03 A ₁₂ 0.00E+00 0.00E+00 0.00E+00 -1.40E-03 A ₁₄ 0.00E+00 0.00E+00 0.00E+00 5.83E-04 A ₁₆ 0.00E+00 0.00E+00 0.00E+00 1.62E-05 surface 65a 65b 66a 66b K -2.06E-02 4.13E+01 -3.38E-02 1.56E+01 A ₄ -1.76E-02 -1.52E-02 -2.20E-02 -1.61E-04 A ₆ 3.26E-03 5.52E-03 2.63E-03 3.00E-04 A ₈ 7.23E-03 -1.00E-03 -8.03E-04 -3.51E-04 A ₁₀ -2.20E-03 1.12E-05 6.22E-05 3.67E-05 A ₁₂ -1.40E-03 3.53E-05 0.00E+00 0.00E+00 A ₁₄ 5.83E-04 -2.46E-06 0.00E+00 0.00E+00 A ₁₆ 1.62E-05 -2.28E-07 0.00E+00 0.00E+00 Table 16

In the sixth embodiment, the values of the relational expressions of the optical imaging lens group 60 are listed in Table 17. It can be known from Table 17 that the optical imaging lens group 60 of the sixth embodiment satisfies the requirements of relational expressions (1) to (11). Sixth embodiment No. Relational value 1 CT5M/CT5m 1.98 2 R3/R4 43.58 3 f45/f123 0.32 4 R9T/R9D 1.98 5 ∣R6/R5∣ 1.57 6 ∣f45/f1∣ 1.83 7 R10/R9 9.69 8 f45/TT45 5.11 9 f45/EFL 7.39 10 f1*f2/f45 1.72 11 TT123/TT45 3.63 Table 17

Referring to FIG. 6B , from left to right in the figure are the astigmatism field curve diagram, F-θ distortion aberration diagram and longitudinal spherical aberration diagram of the optical imaging lens group 60 . It can be seen from the longitudinal spherical aberration diagram that the off-axis rays of the three visible light wavelengths of 470 nm, 555 nm, and 650 nm at different heights can be concentrated near the imaging point, and the deviation of the imaging point can be controlled within + 0.03 mm. From the F-θ distortion aberration diagram (wavelength 555 nm), it can be seen that the F-θ distortion rate of the optical imaging lens group 60 is less than + 4%. From the astigmatism and field curvature aberration diagram (wavelength 555 nm), it can be seen that the focal length variation of the sagittal direction aberration in the entire field of view is within + 0.06 mm; The focal length variation is within + 0.08 mm. As shown in FIG. 6B , the optical imaging lens group 60 of this embodiment has well corrected various aberrations and meets the imaging quality requirements of the optical system. Seventh embodiment

The seventh embodiment of the present invention is an imaging device, which includes the optical imaging lens group as in the aforementioned first to sixth embodiments, and an image sensing element; wherein, the image sensing element is arranged on the optical imaging lens The imaging surface of the group. The image sensing element is, for example, a Charge-Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS) image sensing element. Eighth embodiment

Referring to FIG. 7 , it shows a vehicle electronic device 1000 according to the eighth embodiment of the present invention. The vehicle electronic device 1000 includes the imaging device 1010 as in the seventh embodiment.

It can be seen from the above embodiments that when the second lens is a biconcave lens with a small negative refractive power, it satisfies the relational expression (1) which is CT5M/CT5m ≤ 1.61, and/or the relational expression (4) is 2.13 ≤ R9T/R9D; When the second lens is a meniscus lens with relatively large negative refractive power, it satisfies relational expression (1) which is 1.94 ≤ CT5M/CT5m, and/or relational expression (4) which is R9T/R9D ≤ 1.98. It can be seen from this that in the embodiment of the present invention, by changing the combination of the surface types of the second lens, the thickness ratio (CT5M/CT5m) and/or the slope of the object side surface (R9T/R9D) of the fifth lens can have a significant trend changes, which in turn contribute to the processing and manufacturing of the optical imaging lens group provided by the present invention.

Although the present invention has been described using the preceding several examples, these examples are not intended to limit the scope of the present invention. For anyone skilled in the art, 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 disclosed embodiments of the present invention. Therefore, what needs to be understood here is that the present invention is defined by the scope of the following patent application, and any changes made within the scope of the patent application or its equivalent scope should still fall into the application within the scope of the patent.

10, 20, 30, 40, 50, 60: optical camera lens group 11, 21, 31, 41, 51, 61: the 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 elements 18, 28, 38, 48, 58, 68: protective glass 19, 29, 39, 49, 59, 69: imaging surface 11a, 21a, 31a, 41a, 51a, 61a: the object side of the first lens 11b, 21b, 31b, 41b, 51b, 61b: image side of the first lens 12a, 22a, 32a, 42a, 52a, 62a: the object side of the second lens 12b, 22b, 32b, 42b, 52b, 62b: the image side of the second lens 13a, 23a, 33a, 43a, 53a, 63a: the object side of the third lens 13b, 23b, 33b, 43b, 53b, 63b: the image side of the third lens 14a, 24a, 34a, 44a, 54a, 64a: the object side of the fourth lens 14b, 24b, 34b, 44b, 54b, 64b: the image side of the fourth lens 15a, 25a, 35a, 45a, 55a, 65a: the object side of the fifth lens 15b, 25b, 35b, 45b, 55b, 65b: image side of the fifth lens 16a, 26a, 36a, 46a, 56a, 66a: the 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 the filter element 18a, 18b, 28a, 28b, 38a, 38b, 48a, 48b, 58a, 58b, 68a, 68b: two surfaces of protective glass 100, 200, 300, 400, 500, 600: Image sensor 1000: Automotive electronic devices 1010: imaging device I: optical axis ST: Aperture CT5M: Maximum thickness CT5m: minimum thickness 15ao: optical area P1: Projection point P2: intersection point R9D: Distance R9M: Maximum circumference R9T: Maximum radius

[Fig. 1A] is a schematic diagram of the optical imaging lens group of the first embodiment of the present invention; [Fig. 1B] From left to right are the astigmatism field diagram, distortion diagram and longitudinal spherical aberration diagram of the first embodiment of the present invention; [Fig. 2A] is a schematic diagram of the optical imaging lens group of the second embodiment of the present invention; [Fig. 2B] From left to right is the astigmatism field diagram, distortion diagram and longitudinal spherical aberration diagram of the second embodiment of the present invention; [Fig. 3A] is a schematic diagram of the optical imaging lens group of the third embodiment of the present invention; [Fig. 3B] From left to right is the astigmatism field diagram, distortion diagram and longitudinal spherical aberration diagram of the third embodiment of the present invention; [Fig. 4A] is a schematic diagram of the optical imaging lens group of the fourth embodiment of the present invention; [Fig. 4B] From left to right is the astigmatism field diagram, distortion diagram and longitudinal spherical aberration diagram of the fourth embodiment of the present invention; [Fig. 5A] is a schematic diagram of the optical imaging lens group of the fifth embodiment of the present invention; [Fig. 5B] From left to right is the astigmatism field diagram, distortion diagram and longitudinal spherical aberration diagram of the fifth embodiment of the present invention; [Fig. 6A] is a schematic diagram of the optical imaging lens group of the sixth embodiment of the present invention; [Fig. 6B] From left to right is the astigmatism field diagram, distortion diagram and longitudinal spherical aberration diagram of the sixth embodiment of the present invention; [Fig. 7] is a schematic diagram of an electronic device according to the eighth embodiment of the present invention; [Fig. 8] is a side sectional view of the fifth lens of the first embodiment of the present invention.

10: Optical camera lens group

11: First lens

12: Second lens

13: Third lens

14: Fourth lens

15: fifth lens

16: sixth lens

17: Filter element

18: Protective glass

19: Imaging surface

11a: The side of the object of the first lens

11b: The image side of the first lens

12a: The side of the second lens

12b: The image side of the second lens

13a: The side of the third lens

13b: The image side of the third lens

14a: The side of the fourth lens

14b: The image side of the fourth lens

15a: The side of the fifth lens

15b: The image side of the fifth lens

16a: The side of the sixth lens

16b: The image side of the sixth lens

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

18a, 18b: the second surface of the protective glass

100: Image sensing element

I: optical axis

ST: Aperture

Claims (17)

An optical imaging lens group sequentially includes from the object side to the image side: A first lens with negative refractive power, and its object side is convex; A second lens with negative refractive power, and its image side is concave; A third lens with refractive power, and its image side is convex; an aperture; A fourth lens with positive refractive power, and its object side is convex; a fifth lens having negative refractive power; and 1. The sixth lens has refractive power, and its object side is convex; Wherein, the total number of lenses of the optical imaging lens group is six pieces; the distance from the image side of the third lens to the object side of the fourth lens is AT34, the effective focal length of the optical imaging lens group is EFL, and the first lens to The combined focal length of the third lens is f123, and the combined focal length of the fourth lens to the fifth lens is f45, which satisfy the following relationship: 1.0 ≤ EFL/AT34 ≤ 8.0; ∣ f45/f123∣ ≤ 2.0. For example, the optical imaging lens group of item 1 of the scope of application, wherein the radius of curvature of the object side of the second lens is R3, and the radius of curvature of the image side of the second lens is R4, which satisfy the following relationship: |R3/ R4∣ ≤ 60. Such as the optical imaging lens group of item 1 of the scope of the patent application, wherein the maximum thickness of the fifth lens from the object side parallel to the optical axis to the image side is CT5M, and the minimum thickness from the object side of the fifth lens parallel to the optical axis to the image side is CT5m, which satisfies the following relationship: 1.0 ≤ CT5M/CT5m ≤ 3.0. An optical imaging lens group sequentially includes from the object side to the image side: A first lens with negative refractive power, and its object side is convex; A second lens with negative refractive power, and its image side is concave; A third lens with refractive power, and its image side is convex; an aperture; A fourth lens with positive refractive power, and its object side is convex; a fifth lens having negative refractive power; and 1. The sixth lens has refractive power, and its object side is convex; Wherein, the total number of lenses of the optical imaging lens group is six pieces; the distance from the image side of the third lens to the object side of the fourth lens is AT34, the effective focal length of the optical imaging lens group is EFL, and the fifth lens The radius of curvature on the side of the object is R9, and the radius of curvature on the image side of the fifth lens is R10, which satisfy the following relationship: 1.0 ≤ EFL/AT34 ≤ 8.0; 4.0 ≤ R10/R9 ≤ 55.0. For example, the optical imaging lens group of item 4 of the scope of the patent application, wherein the radius of curvature of the object side of the third lens is R5, and the radius of curvature of the image side of the third lens is R6, which satisfy the following relationship: |R6/ R5∣ ≤ 4.7. For example, the optical imaging lens group of item 4 of the scope of the patent application, wherein the combined focal length of the fourth lens to the fifth lens is f45, and the focal length of the first lens is f1, which satisfy the following relationship: ∣f45/f1∣ ≤ 3.0. Such as the optical imaging lens group of item 1 or item 4 of the scope of the patent application, wherein one optical area on the object side of the fifth lens has a maximum radius R9T perpendicular to the optical axis, and the largest circumference of the optical area is projected on the optical axis There is a projection point, the distance from the projection point to the intersection point of the object side of the fifth lens and the optical axis is R9D, which satisfies the following relationship: 1.0 ≤ R9T/R9D ≤ 2.5. Such as the optical imaging lens group of item 1 or item 4 of the scope of the patent application, wherein the combined focal length of the fourth lens to the fifth lens is f45, and the object side of the fourth lens is along the optical axis to the image of the fifth lens The side distance is TT45, which satisfies the following relationship: 2.0 ≤ f45/TT45 ≤ 9.0. For example, the optical imaging lens group of item 1 or item 4 of the patent scope, wherein the combined focal length of the fourth lens to the fifth lens is f45, and the effective focal length of the optical imaging lens group is EFL, which satisfies the following relationship: 3.72 ≤ f45/EFL ≤ 14.08. Such as the optical imaging lens group of item 1 or item 4 of the scope of the patent application, wherein the focal length of the first lens is f1, the focal length of the second lens is f2, and the combined focal length of the fourth lens to the fifth lens is f45 , which satisfies the following relationship: 1.0 ≤ f1*f2/f45 ≤ 3.0. Such as the optical imaging lens group of item 1 or item 4 of the patent scope, wherein, the distance from the object side of the first lens to the image side of the third lens along the optical axis is TT123, and the object side of the fourth lens is along the optical axis. The distance from the optical axis to the image side of the fifth lens is TT45, which satisfies the following relationship: 2.0 ≤ TT123/TT45 ≤ 4.0. As the optical imaging lens group of item 1 or item 4 of the patent application, wherein, the object side of the second lens is convex at the paraxial position. As for the optical imaging lens group of item 1 or item 4 of the patent application, wherein, the object side of the second lens is concave at the paraxial position. In the optical imaging lens group of item 1 or item 4 of the scope of application, the image side of the fourth lens and the object side of the fifth lens are combined with each other. Such as the optical imaging lens group of item 14 of the scope of application, wherein the image side of the fourth lens and the object side of the fifth lens are combined with each other by a double injection process, and the image side of the fourth lens and the first lens There is no glued layer between the sides of the five-lens object. An imaging device includes the optical imaging lens group as claimed in item 1 or item 4 of the scope of the patent application, and an image sensing element, wherein the image sensing element is arranged on the imaging surface of the optical imaging lens group. An electronic device, which includes the imaging device described in claim 16 of the patent application.

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