TW202232182A - Optical imaging lens, imaging device, and electronic device - Google Patents

Abstract

An optical imaging lens includes, from an object side to an image side, a first lens having negative refractive power and including an object-side surface being convex and an image-side surface being concave, a second lens having negative refractive power and including an object-side being convex and an image-side surface being concave, a third lens having negative refractive power and including an object-side surface being concave and an image-side surface being convex, a fourth lens having positive refractive power and including an object-side surface being convex, a fifth lens having positive refractive power and including an object-side surface being convex and an image-side surface being convex, a sixth lens having negative refractive power and including an object-side surface being concave and an image-side surface being convex, and a seventh lens having positive refractive power and including an object-side surface being convex and an image-side surface being concave. The optical imaging lens includes a total of seven elements.

Description

Optical image capturing lens set, imaging device and electronic device

The present invention relates to an optical image capturing lens group and an imaging device, in particular to an optical image capturing lens group, an imaging device and an electronic device suitable for a vehicle photographic electronic device or a surveillance camera system.

With the continuous improvement of semiconductor process technology, the pixel size of the image sensor element can reach a smaller size, and the performance is significantly improved. Therefore, an optical lens with high imaging quality has become an indispensable part of electronic camera devices.

With the diversified development of electronic camera devices, their application scope is more and more extensive, such as advanced driver assistance systems (ADAS), driving recorders, home surveillance camera equipment, smart phones and human-computer interaction devices, etc. The design of optical lenses Requirements are also more diverse. As far as vehicle photography devices are concerned, in order to clearly identify obstacles around the vehicle or oncoming vehicles on both sides, it is necessary to improve the resolution and brightness of the optical lens, and at the same time, it is required to have a high degree of adaptability to the ambient temperature. In addition, in order to correct various aberrations well, especially in the application of distance measurement or object recognition, if there is a large distortion aberration in the captured image, errors will easily occur in distance calculation or image recognition.

Therefore, how to design an optical imaging device to achieve a balance among miniaturization, high resolution and good optical imaging quality has become the goal of those skilled in the art.

Therefore, in order to solve the above problems, the present invention provides an optical image capturing lens group, which includes a first lens, a second lens, a third lens, a fourth lens, an aperture, a fifth lens, The sixth lens and the seventh lens. Wherein, the first lens has negative refractive power, its object side is convex, and its image side is concave; the second lens has negative refractive power, its object side is convex, and its image side is concave; the third lens has negative refractive power, and its object side is concave. The side is concave and the image side is convex; the fourth lens has positive refractive power, and its object side is convex; the fifth lens has positive refractive power, its image side is convex, and its image side is convex; the sixth lens has negative refractive power , its object side is concave, the image side is convex, wherein, the fifth lens and the sixth lens form a cemented lens; the seventh lens has positive refractive power, its object side is convex, and the image side is concave; wherein, the optical The total number of lenses in the image capturing lens group is seven; wherein, the focal length of the first lens is f1, and the focal length of the third lens is f3, which satisfy the following relationship: 0.95<f3/f1<6.2.

According to an embodiment of the present invention, the distance on the optical axis from the image side surface of the fourth lens to the object side surface of the fifth lens is AT45, and the focal length of the overall optical image capturing lens group is EFL, which satisfies the following relationship: 0.4< AT45/EFL<1.3.

According to an embodiment of the present invention, the focal length of the first lens is f2, and the focal length of the first lens and the focal length f3 of the third lens satisfy the following relationship: 2.9<f3/f2<7.

The present invention further provides an optical image capturing lens group, which includes a first lens, a second lens, a third lens, a fourth lens, an aperture, a fifth lens, a sixth lens and a seventh lens in sequence from the object side to the image side . Wherein, the first lens has negative refractive power, its object side is convex, and its image side is concave; the second lens has negative refractive power, its object side is convex, and its image side is concave; the third lens has negative refractive power, and its object side is concave. The side is concave and the image side is convex; the fourth lens has positive refractive power, and its object side is convex; the fifth lens has positive refractive power, its image side is convex, and its image side is convex; the sixth lens has negative refractive power , the object side is concave and the image side is convex, wherein the fifth lens and the sixth lens form a cemented lens; the seventh lens has positive refractive power, the object side is convex, and the image side is concave; among them, the optical image capture The total number of lenses in the lens group is seven; among them, the focal length of the second lens is f2, the focal length of the third lens is f3, the distance on the optical axis from the image side of the sixth lens to the object side of the seventh lens is AT67, the seventh lens The curvature radius of the object side surface of the lens is R13, which satisfies the following relational expressions: 2.9<f3/f2<7; and 0.1<AT67/R13<0.6.

According to an embodiment of the present invention, the focal length of the fourth lens is f4, and the relationship between it and the effective focal length EFL of the optical image capturing lens group satisfies the following relationship: 2<f4/EFL<3.5.

According to an embodiment of the present invention, the combined focal length of the fifth lens and the sixth lens is f56, and the relationship between it and the effective focal length EFL of the overall optical image capturing lens group satisfies the following relationship: 2.7<f56/EFL <7.5.

According to an embodiment of the present invention, the curvature radius of the image side surface of the fifth lens is R10, and the relationship between it and the effective focal length EFL of the overall optical image capturing lens group satisfies the following relationship: -1.5<R10/EFL< -0.9.

According to an embodiment of the present invention, the distance between the aperture and the imaging plane of the optical image capturing lens group on the optical axis is SL, and the object side of the first lens to the imaging plane of the optical image capturing lens group is in the optical axis. The distance on the axis is TTL, and the following relationship is satisfied between the two: 0.4<SL/TTL<0.7.

According to an embodiment of the present invention, the curvature radius of the object side surface of the first lens is R1, and the curvature radius of the image side surface is R2, which satisfy the following relationship: 1.3<R1/R2<3.2.

According to an embodiment of the present invention, the radius of curvature of the object side of the first lens is R1, the radius of curvature of the image side of the second lens is R4, and the effective focal length of the entire optical image capturing lens group is EFL, which satisfies the following relational expression : 0.8<EFL/R1+EFL/R4<1.4.

CT，第一透鏡物側面至第七透鏡像側面在光軸上之距離為Dr1r14，係滿足以下關係式：0.4＜

CT/Dr1r14＜0.65。 According to an embodiment of the present invention, the sum of the thicknesses of the first lens to the seventh lens on the optical axis is

CT, the distance from the object side of the first lens to the image side of the seventh lens on the optical axis is Dr1r14, which satisfies the following relationship: 0.4<

CT/Dr1r14<0.65.

According to an embodiment of the present invention, the distance from the object side of the first lens to the imaging plane of the optical image capturing lens group on the optical axis is TTL, and the maximum image height of the optical image capturing lens group on the imaging plane is 1 mgH , which satisfies the following relation:

4<TTL/ImgH<7.5.

According to an embodiment of the present invention, the dispersion coefficient of the fifth lens is Vd5, and the dispersion coefficient of the sixth lens is Vd6, which satisfy the following relationship: Vd5>Vd6.

According to an embodiment of the present invention, the dispersion coefficient of the fourth lens is Vd4, which satisfies the following relationship: Vd4<45.

According to an embodiment of the present invention, the optical image capturing lens group includes at least two lenses with a refractive index greater than or equal to 1.7.

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

The present invention further provides an electronic device comprising the above-mentioned imaging device.

In the following embodiments, each lens of the optical image capturing 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 surface of the lens 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 image capture lens group can be reduced, thereby prolonging the The service life of the optical image capture lens group. When the lens material is plastic, it is beneficial to reduce the weight of the optical image capturing lens group and reduce the production cost.

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

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

In the embodiment of the present invention, the total track length TTL (Total Track Length) of the optical image capturing lens group is defined as the distance on the optical axis from the object side of the first lens of the optical image capturing lens group to the imaging plane. The imaging height of the optical image capture 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 effective sensing area diagonal of the image sensing element half the length. In the following embodiments, the units of curvature radius, lens thickness, distance between lenses, lens group total 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 image capturing lens group, which includes a first lens, a second lens, a third lens, a fourth lens, an aperture, a fifth lens, a sixth lens and a seventh lens in sequence from the object side to the image side. Among them, the first lens has negative refractive power, its object side is convex, and its image side is concave; the second lens has negative refractive power, its object side is convex, and its image side is concave; the third lens, has negative refractive power , its object side is concave, and its image side is convex; the fourth lens has positive refractive power, and its object side is convex; the fifth lens has positive refractive power, its image side is convex, and its image side is convex; the sixth lens , has a negative refractive power, its object side is concave, and its image side is convex, wherein the fifth lens and the sixth lens form a cemented lens; the seventh lens has negative refractive power, its object side is convex, and its image side is concave ; The total number of lenses in this optical image capturing lens group is seven.

The first lens has a negative refractive power, the object side is convex, and the image side is concave, which is beneficial to form a wide viewing angle structure and improve the light-receiving range of the optical image capturing lens group.

The second lens also has a negative refractive power. The object side is convex and the image side is concave, which helps to correct the aberration caused by the incident light at a large angle. The optical image capturing lens group has an appropriate back focal length, so as to prevent the back focal length from being too long, which increases the volume of the entire optical image capturing lens group and is not conducive to miniaturization.

The third lens has a negative refractive power, the object side is concave, and the image side is convex, wherein the negative refractive power of the third lens is lower than that of the first lens and the second lens. Since the concave surface on the object side of the third lens corresponds to the concave surface on the image side of the second lens, the transmission direction of the large-angle light can be further changed, the angle between the light and the optical axis can be reduced, and the imaging aberration can be reduced.

The fourth lens has a positive refractive power, and its object side is convex. Through the light divergence effect formed by the negative refractive power of the first lens, the second lens and the third lens, and the light convergence effect of the fourth lens with positive refractive power, the spherical image of the optical image capturing lens group can be effectively reduced. Difference.

The fifth lens has a positive refractive power, and its object side is convex and its image side is convex. The sixth lens has a negative refractive power, and its object side is concave and its image side is convex. The fifth lens and the sixth lens are bonded to each other to form a cemented lens. The cemented lens can help correct the chromatic aberration of the optical image capturing lens group.

The seventh lens has a positive refractive power, and its object side is convex and its image side is concave. The object side of the seventh lens is opposite to the image side of the sixth lens with a convex surface, which helps to correct the field curvature aberration of the optical image capturing lens group.

The focal length of the first lens of the optical image capturing lens group is f1, and the focal length of the third lens is f3, which satisfy the following relationship:

0.95＜f3/f1＜6.2; (1)

By satisfying the condition of the relational expression (1), the refractive power ratio between the first lens and the third lens can be controlled. If f3/f1 is lower than the lower limit of relational expression (1), the negative refractive power of the first lens will be insufficient, which will reduce the light-receiving range of the optical image capturing lens group, making it difficult to form a wide viewing angle structure; if f3/f1 is high At the upper limit of the relational expression (1), the length of the back focal length BFL will increase, and it is less conducive to correcting aberrations.

Preferably, the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens of the optical image capturing lens group is AT45, and the focal length of the entire optical image capturing lens group is EFL, which satisfies the following relationship Mode:

0.4<AT45/EFL<1.3; (2)

By satisfying the condition of relational expression (2), the fourth lens and the fifth lens with positive refractive power can be symmetrically arranged on both sides of the aperture, and an appropriate distance between the two lenses can be maintained to facilitate correction of aberrations.

The focal length of the first lens of the optical image capturing lens group is f2, and the focal length of the third lens is f3, which satisfy the following relationship:

2.9 < f3/f2 < 7; (3)

By satisfying the condition of the relational expression (3), the refractive power ratio between the second lens and the third lens can be controlled. If f3/f2 is lower than the lower limit of the relationship (1), it is easy to cause the negative refractive power of the second lens of the optical image capture lens group to be too low, which is not conducive to guiding the light to approach the optical axis; if f3/f2 is higher than the relationship If the upper limit of formula (1) is used, the negative refractive power of the third lens is too low, which reduces the effect of the third lens and the fourth lens to correct aberrations.

Preferably, the distance on the optical axis from the image side of the sixth lens of the optical image capturing lens group to the object side of the seventh lens is AT67, and the radius of curvature of the object side of the seventh lens is R13, which satisfies the following relationship:

0.1<AT67/R13<0.6; (4)

By satisfying the condition of relational expression (4), it is helpful to maintain an appropriate distance between the sixth lens and the seventh lens, and the lens surface and the air gap between the image side of the sixth lens and the object side of the seventh lens are used to obtain Correct the aberration of the optical image capture lens group.

The focal length of the fourth lens of the optical image capturing lens group is f4, and the relationship between it and the effective focal length EFL of the overall optical image capturing lens group satisfies the following relationship:

2 < f4/EFL < 3.5; (5)

By satisfying the condition of the relational expression (5), it is beneficial to reduce the volume of the optical image capturing lens group while maintaining good optical performance. If f4/EFL is lower than the lower limit of the relational formula (5), the positive refractive power of the fourth lens is too large, and the distance between the fourth lens and the imaging surface is easy to be too short, which is not conducive to the arrangement of the rear lens group; if f4 If /EFL is higher than the upper limit of the relational expression (5), the positive refractive power of the fourth lens is insufficient, and it is difficult to balance the negative refractive powers of the first lens, the second lens and the third lens.

The combined focal length of the fifth lens and the sixth lens of the optical image capturing lens group is f56, and the relationship between it and the effective focal length EFL of the optical image capturing lens group is as follows:

2.7 < f56/EFL < 7.5; (6)

By satisfying the condition of the relational expression (6), the cemented lens composed of the fifth lens element and the sixth lens element can have an appropriate positive refractive power, which is beneficial to reduce chromatic aberration.

The curvature radius of the image side surface of the fifth lens of the optical image capturing lens group is R10, and the relationship between it and the effective focal length EFL of the optical image capturing lens group is as follows:

-1.5 < R10/EFL < -0.9; (7)

By satisfying the condition of the relational formula (7), the cemented surface of the fifth lens element and the sixth lens element can be controlled to have an appropriate radius of curvature, which is also beneficial to reduce chromatic aberration.

The distance on the optical axis from the aperture of the optical image capturing lens group to the imaging plane of the optical image capturing lens group is SL, and the distance on the optical axis from the object side of the first lens to the imaging plane of the optical image capturing lens group is TTL, and the system satisfies the following relation:

0.4<SL/TTL<0.7; (8)

By satisfying the condition of the relational expression (8), the aperture can be set at an appropriate position in the optical image capturing lens group, which is beneficial to reduce the distortion aberration of the optical image capturing lens group.

The curvature radius of the object side surface of the first lens of the optical image capturing lens group is R1, and the curvature radius of the image side surface is R2, which satisfy the following relationship:

1.3 < R1/R2 < 3.2; (9)

By satisfying the condition of the relational expression (9), it is beneficial to expand the light-receiving range and improve the imaging angle of view.

The curvature radius of the object side surface of the first lens of the optical image capturing lens group is R1, and the curvature radius of the image side surface of the second lens group is R4, which satisfy the following relationship:

0.8 < EFL/R1 + EFL/R4 < 1.4; (10)

By satisfying the condition of the relational expression (10), it is beneficial to control the shape of the object side surface of the first lens and the image side surface of the second lens, so as to expand the viewing angle and reduce the imaging aberration.

CT，該第一透鏡物側面至該第七透鏡像側面在光軸上之距離為Dr1r14，係滿足以下關係式： The sum of the thicknesses of the first lens to the seventh lens on the optical axis of the optical image capturing lens group is

CT, the distance from the object side of the first lens to the image side of the seventh lens on the optical axis is Dr1r14, which satisfies the following relationship:

CT/Dr1r14＜0.65；（11） 0.4＜

CT/Dr1r14 <0.65; (11)

By satisfying the condition of relational expression (11), it can be used to adjust the sum of the thicknesses of the first lens to the seventh lens on the optical axis and the distance on the optical axis from the object side of the first lens to the image side of the seventh lens, and maintain the distance between the two. an appropriate proportion.

The distance from the object side of the first lens of the optical image capturing lens group to the imaging plane of the optical image capturing lens group on the optical axis is TTL, and the maximum image height of the optical image capturing lens group on the imaging plane is 1 mgH , which satisfies the following relation:

TTL/ImgH < 7.5; (12)

By satisfying the condition of the relational expression (12), it is beneficial to reduce the total length of the optical image capturing lens group.

The dispersion coefficient of the fifth lens of the optical image capturing lens group is Vd5, and the dispersion coefficient of the sixth lens is Vd6, which satisfy the following relationship:

Vd5>Vd6; (13)

By satisfying the condition of the relational expression (13), the positive lens material of the cemented lens of the optical image capturing lens group can have lower dispersion characteristics, and the negative lens material have higher dispersion permeability, thereby further reducing the optical density. Chromatic aberrations of the image capture lens group.

The dispersion coefficient of the fourth lens of the optical image capturing lens group is Vd4, which satisfies the following relationship:

Vd4 < 45; (14)

The optical image capturing lens group includes at least two lenses with a refractive index greater than or equal to 1.7, which is beneficial to reduce the imaging aberration of the optical image capturing lens group. first embodiment

Referring to FIG. 1A and FIG. 1B , FIG. 1A is a schematic diagram of an optical image capturing lens assembly according to a first embodiment of the present invention. FIG. 1B is a longitudinal spherical aberration diagram (Longitudinal Spherical Aberration), an astigmatic field curvature diagram (Astigmatism/Field Curvature) and a distortion aberration diagram (Distortion) in order from left to right.

As shown in FIG. 1A , the optical image capturing lens group 100 of the first embodiment includes a first lens 101 , a second lens 102 , a third lens 103 , a fourth lens 104 , an aperture ST, The fifth lens 105 , the sixth lens 106 and the seventh lens 107 . The optical image capturing lens set 100 may further include a filter element 108 , a protective glass 109 and an imaging surface 110 . An image sensing element 120 can be further disposed on the imaging surface 110 to form an imaging device (not marked).

The first lens 101 has a negative refractive power, the object side 101a is convex, the image side 101b is concave, and both the object side 101a and the image side 101b are spherical. The material of the first lens 101 is glass.

The second lens 102 has a negative refractive power, the object side 102a is convex, the image side 102b is concave, and both the object side 102a and the image side 102b are spherical. The material of the second lens 102 is glass.

The third lens 103 has a negative refractive power, the object side 103a is concave, the image side 103b is convex, and both the object side 103a and the image side 103b are aspherical. The material of the third lens 103 is plastic.

The fourth lens 104 has a positive refractive power, the object side 104a is convex, the image side 104b is convex, and both the object side 104a and the image side 104b are spherical. The material of the fourth lens 104 is glass.

The fifth lens 105 has a positive refractive power, the object side 105a is convex, the image side 105b is convex, and both the object side 105a and the image side 105b are spherical. The material of the fifth lens 105 is glass.

The sixth lens 106 has a negative refractive power, the object side 106a is concave, the image side 106b is convex, and both the object side 106a and the image side 106b are spherical. The material of the sixth lens 106 is glass. Wherein, the image side surface 105b of the fifth lens 105 and the object side surface 106a of the sixth lens 106 have the same curvature radius, and are bonded to each other to form a cemented lens.

The seventh lens 107 has a positive refractive power, the object side 107a is convex, the image side 107b is concave, and both the object side 107a and the image side 107b are aspherical. The material of the seventh lens 107 is plastic.

The filter element 108 is disposed between the seventh lens 107 and the imaging surface 110 for filtering out light in a specific wavelength range, such as an infrared filter element (IR Filter). Both surfaces 108a and 108b of the filter element 108 are flat surfaces, and the material is glass.

The protective glass 109 is disposed on the image sensing element 120 , the two surfaces 109 a and 109 b are both flat surfaces, and the material is glass.

The image sensor (Image Sensor) 120 is, for example, a Charge-Coupled Device (CCD) Image Sensor or a CMOS Image Sensor.

The curve equations of the above aspheric surfaces are expressed as follows:

Among them, X: the distance between the point on the aspheric surface whose distance from the optical axis is Y 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;

R: the radius of curvature of the lens at the near optical axis;

K: cone factor; and

Ai: i-th order aspheric coefficient.

Please refer to Table 1 below, which is the detailed optical data of the optical image capturing lens set 100 according to the first embodiment of the present invention. Wherein, the object side 101a of the first lens 101 is marked as the surface 101a, the image side 101b is marked as the surface 101b, and so on for other lens surfaces. 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 101a of the first lens 101 to the image side 101b is 0.5 mm, which means that the first lens 101 is on the optical axis. The thickness is 0.5 mm. The distance from the image side 101b of the first lens 101 to the object side 102a of the second lens 102 is 1.4 mm. Others can be deduced by analogy, and will not be repeated below.

In the first embodiment, the effective focal length of the optical image capturing lens group 100 is EFL, the aperture value (F-number) is Fno, and half of the maximum angle of view of the entire optical image capturing lens group 100 is HFOV (Half Field of View). The distance from the object side surface 101a of the first lens 101 to the imaging surface 110 on the optical axis I is the total length TTL, and its values are as follows: EFL=2.36 mm, Fno=1.5, TTL=19.54 mm, HFOV=85 degrees. The tables of the following embodiments correspond to the optical image capturing lens sets of the respective embodiments, and the definitions of the tables are the same as those of the present embodiment, so they will not be repeated in the following embodiments. first embodiment EFL = 2.36 mm, Fno = 1.5, HFOV = 85 deg surface Surface type Radius of curvature (mm) Distance(mm) refractive index Dispersion coefficient Focal length (mm) material subject unlimited unlimited first lens 101a spherical 9.304 0.500 1.813 40.9 -8.87 Glass 101b spherical 3.964 1.400 second lens 102a spherical 7.255 0.500 1.758 52.3 -6.77 Glass 102b spherical 2.915 2.599 third lens 103a Aspherical -2.904 1.215 1.651 22.5 -20.83 plastic 103b Aspherical -4.305 0.297 fourth lens 104a spherical 6.165 1.613 1.734 28.3 5.99 Glass 104b spherical -13.609 1.144 aperture ST flat unlimited 1.121 Fifth lens 105a spherical 20.861 1.962 1.702 51.1 3.75 Glass 105b (glued side) spherical -2.899 0.000 sixth lens 106a (glued side) spherical -2.899 0.500 1.971 17.5 -4.86 Glass 106b spherical -8.154 1.369 seventh lens 107a Aspherical 4.871 2.177 1.537 56.1 9.52 plastic 107b Aspherical 88.712 0.525 filter element 108a flat unlimited 0.210 1.517 64.2 Glass 108b flat unlimited 1.797 protective glass 109a flat unlimited 0.400 1.517 64.2 Glass 109b flat unlimited 0.205 Imaging plane 110 flat unlimited Reference wavelength: 550 nm Table I

Please refer to Table 2 below, which is the aspheric coefficient of each surface of each lens of the first embodiment of the present invention. Among them, K is the cone coefficient in the aspheric curve equation, and A2 to A14 represent the 2nd to 14th order aspheric coefficients of each surface. For example, the taper coefficient K of the object side surface 103a of the third lens 103 is -0.225. Others can be deduced by analogy, and will not be repeated below. In addition, the tables of the following embodiments correspond to the optical image capturing lens sets of the respective embodiments, and the definitions of the tables are the same as those of the present embodiment, so they will not be repeated in the following embodiments. Aspheric coefficients of the first embodiment surface 103a 103b 107a 107b K -2.25E-01 -1.29E+00 -5.34E-01 5.75E+02 A ₂ 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A ₄ 3.62E-03 4.53E-04 -4.83E-04 1.25E-03 A ₆ 2.77E-04 1.41E-04 6.97E-05 -1.36E-05 A ₈ 1.06E-06 1.12E-06 -3.67E-08 4.73E-06 A ₁₀ 6.42E-06 3.52E-07 1.97E-08 -2.39E-07 A ₁₂ -6.37E-07 3.18E-08 -3.24E-09 -6.86E-09 A ₁₄ 0.00E+00 0.00E+00 0.00E+00 -1.34E-10 Table II

In the first embodiment, the relationship between the focal length f1 of the first lens 101 and the focal length f3 of the third lens 103 is f3/f1=2.35.

In the first embodiment, the relationship between the distance AT45 on the optical axis between the image side surface 104b of the fourth lens 104 and the object side surface 105a of the fifth lens 105 and the effective focal length EFL of the overall optical image capturing lens group 100 is AT45 /EFL=0.96.

In the first embodiment, the relationship between the focal length f2 of the second lens 102 and the focal length f3 of the third lens 103 is f3/f2=3.08.

In the first embodiment, the relationship between the distance AT67 on the optical axis between the image side surface 106b of the sixth lens 106 and the object side surface 107a of the seventh lens 107 and the curvature radius R13 of the object side surface of the seventh lens 107 is: AT67/R13=0.28.

In the first embodiment, the relationship between the focal length f4 of the fourth lens 104 and the effective focal length EFL of the overall optical image capturing lens group 100 is f4/EFL=2.53.

In the first embodiment, the relationship between the combined focal length f56 of the cemented lens formed by the fifth lens 105 and the sixth lens 106 and the effective focal length EFL of the overall optical image capturing lens group 100 is f56/EFL=6.96.

In the first embodiment, the relationship between the curvature radius R10 of the image side surface 105b of the fifth lens 105 and the effective focal length EFL of the overall optical image capturing lens group 100 is R10/EFL=-1.23.

In the first embodiment, the distance SL from the aperture ST of the optical image capturing lens group 100 to the imaging surface 110 on the optical axis, and the distance SL from the object side surface 101 a of the first lens 101 to the imaging surface 110 of the optical image capturing lens group 100 The relationship between the distance TTL on the optical axis is SL/TTL=0.53.

In the first embodiment, the relationship between the curvature radius R1 of the object side surface 101a of the first lens 101 and the curvature radius R2 of the image side surface 101b is R1/R2=2.35.

In the first embodiment, the curvature radius R1 of the object side surface 101a of the first lens 101, the curvature radius R4 of the image side surface 102b of the second lens 102, and the effective focal length of the optical image capturing lens group 100 are between EFL The relationship EFL/R1+EFL/R4=1.06.

CT，與第一透鏡101物側面101a至第七透鏡107像側面107b在光軸上之距離Dr1r14，二者間之關係式為

CT/Dr1r14=0.52。 In the first embodiment, the sum of the thicknesses of the first lens 101 to the seventh lens 107 on the optical axis

CT, the distance Dr1r14 on the optical axis from the object side 101a of the first lens 101 to the image side 107b of the seventh lens 107, the relationship between the two is

CT/Dr1r14=0.52.

In the first embodiment, the distance TTL between the object side surface 101a of the first lens 101 and the imaging surface 110 of the optical image capturing lens group 100 on the optical axis is TTL, and the optical image capturing lens group 100 is on the imaging surface 110 The relationship between the maximum image height ImgH is TTL/ImgH=6.07.

In the first embodiment, the dispersion coefficients of the fifth lens element 105 and the sixth lens element 106 are Vd5=51.1 and Vd6=17.5, respectively.

In the first embodiment, the dispersion coefficient of the fourth lens 104 is Vd4=28.3.

In the first embodiment, the refractive indices of the first lens 101 , the second lens 102 , the fourth lens 104 , the fifth lens 105 and the sixth lens 106 of the optical image capturing lens group 100 are all greater than 1.7.

It can be seen from the numerical values of the above relational expressions that the optical image capturing lens assembly 100 of the first embodiment satisfies the requirements of relational expressions (1) to (14), and satisfies the condition of including at least two lenses with a refractive index greater than or equal to 1.7.

Referring to FIG. 1B , from left to right in the figure are the longitudinal spherical aberration diagram, the astigmatic field curvature diagram and the distortion aberration diagram of the optical image capturing lens group 100 , respectively. It can be seen from the longitudinal spherical aberration diagram that the off-axis light of the three visible light wavelengths of 470nm, 550nm and 650nm at different heights can be concentrated near the imaging point, and the deviation of the imaging point can be controlled within + 0.03mm. From the astigmatic field curvature aberration diagram (wavelength 550nm), it can be seen that the focal length variation of the sagittal aberration in the entire field of view is within + 0.02mm; the aberration in the meridional direction is within the focal length of the entire field of view. The variation is within + 0.02mm; and the distortion aberration can be controlled within 10%. As shown in FIG. 1B , the optical image capturing lens assembly 100 of this embodiment has corrected various aberrations well, 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 image capturing lens group according to a second embodiment of the present invention. FIG. 2B is a longitudinal spherical aberration diagram (Longitudinal Spherical Aberration), an astigmatism/Field Curvature diagram (Astigmatism/Field Curvature) and a distortion aberration diagram (Distortion) of the second embodiment of the present invention in order from left to right.

As shown in FIG. 2A , the optical image capturing lens group 200 of the second embodiment includes a first lens 201 , a second lens 202 , a third lens 203 , a fourth lens 204 , an aperture ST, The fifth lens 205 , the sixth lens 206 and the seventh lens 207 . The optical image capturing lens set 200 can further include a filter element 208 , a protective glass 209 and an imaging surface 210 . An image sensing element 220 can be further disposed on the imaging surface 210 to form an imaging device (not marked).

The first lens 201 has a negative refractive power, the object side 201a is convex, the image side 201b is concave, and both the object side 201a and the image side 201b are spherical. The material of the first lens 201 is glass.

The second lens 202 has a negative refractive power, the object side 202a is convex, the image side 202b is concave, and both the object side 202a and the image side 202b are spherical. The material of the second lens 202 is glass.

The third lens 203 has a negative refractive power, the object side 203a is concave, the image side 203b is convex, and both the object side 203a and the image side 203b are aspherical. The material of the third lens 203 is plastic.

The fourth lens 204 has a positive refractive power, the object side 204a is convex, the image side 204b is convex, and both the object side 204a and the image side 204b are spherical. The material of the fourth lens 204 is glass.

The fifth lens 205 has a positive refractive power, the object side 205a is convex, the image side 205b is convex, and both the object side 205a and the image side 205b are spherical. The material of the fifth lens 205 is glass.

The sixth lens 206 has negative refractive power, the object side 206a is concave, the image side 206b is convex, and both the object side 206a and the image side 206b are spherical. The material of the sixth lens 206 is glass. The image side surface 205b of the fifth lens 205 and the object side surface 206a of the sixth lens 206 have the same curvature radius, and are bonded to each other to form a cemented lens.

The seventh lens 207 has a positive refractive power, the object side 207a is convex, the image side 207b is concave, and both the object side 207a and the image side 207b are aspherical. The material of the seventh lens 207 is plastic.

The filter element 208 is disposed between the seventh lens 207 and the imaging surface 210 for filtering out light in a specific wavelength range, such as an infrared filter element (IR Filter). Both surfaces 208a and 208b of the filter element 208 are flat surfaces, and the material is glass.

The protective glass 209 is disposed on the image sensing element 220, the two surfaces 209a and 209b are both flat surfaces, and the material is glass.

The image sensor (Image Sensor) 220 is, for example, a Charge-Coupled Device (CCD) Image Sensor or a CMOS Image Sensor.

The detailed optical data and aspheric coefficient of the lens surface of the optical image capturing lens group 200 of the second embodiment are listed in Tables 3 and 4, respectively. In the second embodiment, the curve equation of the aspheric surface is expressed as in the first embodiment. Second Embodiment EFL= 2.33 mm, Fno = 1.58 , HFOV = 85 deg surface Surface type Radius of curvature (mm) Distance(mm) refractive index Dispersion coefficient Focal length (mm) material subject unlimited unlimited first lens 201a spherical 7.397 0.500 1.804 42.4 -9.11 Glass 201b spherical 3.569 1.911 second lens 202a spherical 9.688 0.500 1.750 51.0 -5.91 Glass 202b spherical 2.975 2.428 third lens 203a Aspherical -2.968 1.215 1.645 23.5 -25.42 plastic 203b Aspherical -4.205 0.164 fourth lens 204a spherical 6.138 1.613 1.734 28.5 6.04 Glass 204b spherical -14.141 0.396 aperture ST flat unlimited 1.976 Fifth lens 205a spherical 20.267 1.962 1.702 51.1 3.77 Glass 205b (glue side) spherical -2.925 0.000 sixth lens 206a (glued side) spherical -2.925 0.500 1.971 17.5 -5.04 Glass 206b spherical -7.880 1.788 seventh lens 207a Aspherical 4.869 2.177 1.537 56.1 9.50 plastic 207b Aspherical 91.236 0.539 filter element 208a flat unlimited 0.210 1.517 64.2 Glass 208b flat unlimited 1.697 protective glass 209a flat unlimited 0.400 1.517 64.2 Glass 209b flat unlimited 0.130 Imaging plane 210 flat unlimited Reference wavelength: 550 nm Table 3 Aspheric coefficients of the second embodiment surface 203a 203b 207a 207b K -2.57E-01 -1.40E+00 -7.70E-01 -3.17E+02 A ₂ 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A ₄ 4.15E-03 5.92E-04 -7.93E-04 2.93E-04 A ₆ 2.84E-04 9.12E-05 4.21E-05 -3.91E-05 A ₈ -1.20E-05 -2.18E-06 -5.82E-07 4.45E-06 A ₁₀ 3.11E-06 8.09E-07 2.34E-08 -1.37E-07 A ₁₂ 1.29E-07 -3.69E-10 1.69E-10 8.16E-10 A ₁₄ 0.00E+00 0.00E+00 0.00E+00 -3.97E-12 Table 4

CT/Dr1r14 0.49 TTL/ImgH 5.77 Vd4 28.5  Vd5 51.1  Vd6 17.5 表五 In the second embodiment, the numerical values of the relational expressions of the optical image capturing lens group 200 are listed in Table 5. It can be seen from Table 5 that the optical image capturing lens set 200 of the second embodiment satisfies the requirements of the relational expressions (1) to (14), and it can be seen from Table 3 that the optical image capturing lens set 200 satisfies the requirements of including at least two lenses with a refractive index greater than Equal to the condition of the lens of 1.7. relational Numerical value f3/f1 2.79 AT45/EFL 1.02 f3/f2 4.30 AT67/R13 0.37 f4/EFL 2.60 f56/EFL 6.46 R10/EFL -1.26 SL/TTL 0.55 R1/R2 2.07 EFL/R1+EFL/R4 1.10

CT/Dr1r14 0.49 TTL/ImgH 5.77 Vd4 28.5 Vd5 51.1 Vd6 17.5 Table 5

Referring to FIG. 2B , from left to right in the figure are the longitudinal spherical aberration diagram, the astigmatic field curvature diagram and the distortion aberration diagram of the optical image capturing lens group 200 , respectively. It can be seen from the longitudinal spherical aberration diagram that the off-axis light of the three visible light wavelengths of 470nm, 550nm and 650nm at different heights can be concentrated near the imaging point, and the deviation of the imaging point can be controlled within + 0.02mm. It can be seen from the astigmatic field curvature aberration diagram (wavelength 550nm) that the focal length variation of the sagittal aberration in the entire field of view is within + 0.03mm; the aberration in the meridional direction is within the focal length of the entire field of view. The variation is within + 0.02mm; and the distortion aberration can be controlled within 2%. As shown in FIG. 2B , the optical image capturing lens assembly 200 of this embodiment has corrected various aberrations well, 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 image capturing lens group according to a third embodiment of the present invention. FIG. 3B is a longitudinal spherical aberration diagram (Longitudinal Spherical Aberration), an astigmatism/Field Curvature diagram (Astigmatism/Field Curvature) and a distortion aberration diagram (Distortion) of the third embodiment of the present invention in order from left to right.

As shown in FIG. 3A , the optical image capturing lens group 300 of the third embodiment includes a first lens 301 , a second lens 302 , a third lens 303 , a fourth lens 304 , an aperture ST, The fifth lens 305 , the sixth lens 306 and the seventh lens 307 . The optical image capturing lens set 300 may further include a filter element 308 , a protective glass 309 and an imaging surface 310 . An image sensing element 320 can be further disposed on the imaging surface 310 to form an imaging device (not marked).

The first lens 301 has a negative refractive power, the object side 301a is convex, the image side 301b is concave, and both the object side 301a and the image side 301b are spherical. The material of the first lens 301 is glass.

The second lens 302 has a negative refractive power, the object side 302a is convex, the image side 302b is concave, and both the object side 302a and the image side 302b are spherical. The material of the second lens 302 is glass.

The third lens 303 has a negative refractive power, the object side 303a is concave, the image side 303b is convex, and both the object side 303a and the image side 303b are aspherical. The material of the third lens 303 is plastic.

The fourth lens 304 has a positive refractive power, the object side 304a is convex, the image side 304b is convex, and both the object side 304a and the image side 304b are spherical. The material of the fourth lens 304 is glass.

The fifth lens 305 has a positive refractive power, the object side 305a is convex, the image side 305b is convex, and both the object side 305a and the image side 305b are spherical. The material of the fifth lens 305 is glass.

The sixth lens 306 has negative refractive power, the object side 306a is concave, the image side 306b is convex, and both the object side 306a and the image side 306b are spherical. The material of the sixth lens 306 is glass. The image side surface 305b of the fifth lens 305 and the object side surface 306a of the sixth lens 306 have the same curvature radius, and are bonded to each other to form a cemented lens.

The seventh lens 307 has a positive refractive power, the object side 307a is convex, the image side 307b is concave, and both the object side 307a and the image side 307b are aspherical. The material of the seventh lens 307 is plastic.

The filter element 308 is disposed between the seventh lens 307 and the imaging surface 310 for filtering out light in a specific wavelength range, such as an infrared filter element (IR Filter). The two surfaces 308a and 308b of the filter element 308 are both flat surfaces, and the material is glass.

The protective glass 309 is disposed on the image sensing element 320 , the two surfaces 309 a and 309 b are both flat surfaces, and the material is glass.

The image sensor (Image Sensor) 320 is, for example, a Charge-Coupled Device (CCD) Image Sensor or a CMOS Image Sensor.

The detailed optical data and aspheric coefficient of the lens surface of the optical image capturing lens group 300 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 as in the form of the first embodiment. Third Embodiment EFL = 2.33 mm, Fno = 1.59, HFOV = 75 deg surface Surface type Radius of curvature (mm) Distance(mm) refractive index Dispersion coefficient Focal length (mm) material subject unlimited unlimited first lens 301a spherical 7.397 0.500 1.804 42.4 -10.79 Glass 301b spherical 3.871 2.173 second lens 302a spherical 11.738 0.500 1.750 51.0 -5.27 Glass 302b spherical 2.903 2.461 third lens 303a Aspherical -3.097 1.215 1.645 23.5 -26.35 plastic 303b Aspherical -4.368 0.182 fourth lens 304a spherical 6.152 1.613 1.734 28.5 6.05 Glass 304b spherical -14.175 0.356 aperture ST flat unlimited 1.974 Fifth lens 305a spherical 20.395 1.962 1.702 51.1 3.77 Glass 305b (glued side) spherical -2.926 0.000 sixth lens 306a (glued side) spherical -2.926 0.500 1.971 17.5 -5.05 Glass 306b spherical -7.878 1.898 seventh lens 307a Aspherical 4.847 2.177 1.537 56.1 9.49 plastic 307b Aspherical 85.326 0.346 filter element 308a flat unlimited 0.210 1.517 64.2 Glass 308b flat unlimited 1.884 protective glass 309a flat unlimited 0.400 1.517 64.2 Glass 309b flat unlimited 0.130 Imaging plane 310 flat unlimited Reference wavelength: 550 nm Table 6 Aspheric coefficients of the third embodiment surface 303a 303b 307a 307b K -2.19E-01 -1.36E+00 -7.80E-01 -1.33E+02 A ₂ 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A ₄ 3.85E-03 5.58E-04 -8.00E-04 3.10E-04 A ₆ 2.55E-04 9.81E-05 3.94E-05 -4.13E-05 A ₈ -1.04E-05 -1.54E-06 -6.58E-07 4.39E-06 A ₁₀ 3.39E-06 6.27E-07 2.19E-08 -1.35E-07 A ₁₂ -3.17E-09 -3.79E-08 2.55E-10 1.14E-09 A ₁₄ 0.00E+00 0.00E+00 0.00E+00 9.14E-12 Table 7

CT/Dr1r14 0.48 TTL/ImgH 6.66 Vd4 28.5  Vd5 51.1  Vd6 17.5 表八 In the third embodiment, the numerical values of the relational expressions of the optical image capturing lens group 300 are listed in Table 8. It can be seen from Table 8 that the optical image capturing lens set 300 of the third embodiment satisfies the requirements of the relational expressions (1) to (14), and it can be seen from Table 6 that the optical image capturing lens set 300 satisfies the requirements of including at least two lenses with a refractive index greater than Equal to the condition of the lens of 1.7. relational Numerical value f3/f1 2.44 AT45/EFL 1.00 f3/f2 5.00 AT67/R13 0.39 f4/EFL 2.60 f56/EFL 6.48 R10/EFL -1.26 SL/TTL 0.55 R1/R2 1.91 EFL/R1+EFL/R4 1.12

CT/Dr1r14 0.48 TTL/ImgH 6.66 Vd4 28.5 Vd5 51.1 Vd6 17.5 Table 8

Referring to FIG. 3B , from left to right in the figure are the longitudinal spherical aberration diagram, the astigmatic field curvature diagram and the distortion aberration diagram of the optical image capturing lens group 300 , respectively. It can be seen from the longitudinal spherical aberration diagram that the off-axis light of the three visible light wavelengths of 470nm, 550nm and 650nm at different heights can be concentrated near the imaging point, and the deviation of the imaging point can be controlled within + 0.02mm. From the astigmatic field curvature aberration diagram (wavelength 550nm), it can be seen that the focal length variation of the sagittal aberration in the entire field of view is within + 0.02mm; the aberration in the meridional direction is within the focal length of the entire field of view. The variation is within + 0.02mm; and the distortion aberration can be controlled within 2%. As shown in FIG. 3B , the optical image capturing lens assembly 300 of this embodiment has corrected various aberrations well, 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 image capturing lens group according to a fourth embodiment of the present invention. FIG. 4B is a longitudinal spherical aberration diagram (Longitudinal Spherical Aberration), an astigmatism/Field Curvature diagram (Astigmatism/Field Curvature) and a distortion aberration diagram (Distortion) of the fourth embodiment of the present invention in order from left to right.

As shown in FIG. 4A , the optical image capturing lens group 400 of the fourth embodiment includes a first lens 401 , a second lens 402 , a third lens 403 , a fourth lens 404 , an aperture ST, The fifth lens 405 , the sixth lens 406 and the seventh lens 407 . The optical image capturing lens set 400 may further include a filter element 408 , a protective glass 409 and an imaging surface 410 . An image sensing element 420 can be further disposed on the imaging surface 410 to form an imaging device (not marked).

The first lens 401 has a negative refractive power, the object side 401a is convex, the image side 401b is concave, and both the object side 401a and the image side 401b are spherical. The material of the first lens 401 is glass.

The second lens 402 has a negative refractive power, the object side 402a is convex, the image side 402b is concave, and both the object side 402a and the image side 402b are spherical. The material of the second lens 402 is glass.

The third lens 403 has a negative refractive power, the object side 403a is concave, the image side 403b is convex, and both the object side 403a and the image side 403b are aspherical. The material of the third lens 403 is glass.

The fourth lens 404 has a positive refractive power, its object side 404a is convex, its image side 404b is convex, and its object side 404a and image side 404b are both spherical. The material of the fourth lens 404 is glass.

The fifth lens 405 has a positive refractive power, the object side 405a is convex, the image side 405b is convex, and both the object side 405a and the image side 405b are spherical. The material of the fifth lens 405 is glass.

The sixth lens 406 has negative refractive power, the object side 406a is concave, the image side 406b is convex, and both the object side 406a and the image side 406b are spherical. The material of the sixth lens 406 is glass. The image side surface 405b of the fifth lens 405 and the object side surface 406a of the sixth lens 406 have the same curvature radius, and are bonded to each other to form a cemented lens.

The seventh lens 407 has a positive refractive power, the object side 407a is convex, the image side 407b is concave, and both the object side 407a and the image side 407b are aspherical. The material of the seventh lens 407 is plastic.

The filter element 408 is disposed between the seventh lens 407 and the imaging surface 410 for filtering out light in a specific wavelength range, such as an infrared filter element (IR Filter). The two surfaces 408a and 408b of the filter element 408 are both flat surfaces, and the material is glass.

The protective glass 409 is disposed on the image sensing element 420, the two surfaces 409a and 409b are both flat surfaces, and the material is glass.

The Image Sensor 420 is, for example, a Charge-Coupled Device (CCD) Image Sensor or a CMOS Image Sensor.

The detailed optical data and aspheric coefficient of the lens surface of the optical image capturing lens group 400 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 as in the form of the first embodiment. Fourth Embodiment EFL = 2.47 mm, Fno = 1.64, HFOV = 85 deg surface Surface type Radius of curvature (mm) Distance(mm) refractive index Dispersion coefficient Focal length (mm) material subject unlimited unlimited first lens 401a spherical 9.790 0.500 1.808 46.6 -7.40 Glass 401b spherical 3.626 1.460 second lens 402a spherical 7.175 0.485 1.776 49.6 -7.10 Glass 402b spherical 3.025 2.448 third lens 403a Aspherical -2.962 1.216 1.661 36.7 -23.86 Glass 403b Aspherical -4.243 0.098 fourth lens 404a spherical 5.800 1.600 1.734 28.5 5.83 Glass 404b spherical -14.361 0.338 aperture ST flat unlimited 1.879 Fifth lens 405a spherical 18.657 1.964 1.703 48.1 3.58 Glass 405b (glued side) spherical -2.783 0.000 sixth lens 406a (glued side) spherical -2.783 0.490 1.971 17.5 -4.57 Glass 406b spherical -8.124 2.116 seventh lens 407a Aspherical 4.940 2.177 1.537 56.1 9.64 plastic 407b Aspherical 93.829 0.523 filter element 408a flat unlimited 0.210 1.517 64.2 Glass 408b flat unlimited 1.490 protective glass 409a flat unlimited 0.400 1.517 64.2 Glass 409b flat unlimited 0.217 Imaging plane 410 flat unlimited Reference wavelength: 550 nm Table 9 Aspheric coefficients of the fourth embodiment surface 403a 403b 407a 407b K -2.00E-01 -1.25E+00 -3.75E-01 4.69E+02 A ₂ 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A ₄ 3.82E-03 5.11E-04 -8.40E-04 8.07E-04 A ₆ 3.77E-04 1.29E-04 3.66E-05 -4.31E-05 A ₈ -6.41E-06 1.80E-06 -8.22E-07 4.70E-06 A ₁₀ 1.54E-06 -3.47E-07 3.48E-08 -1.98E-07 A ₁₂ 2.35E-07 6.03E-08 -1.85E-10 2.98E-09 A ₁₄ 0.00E+00 0.00E+00 0.00E+00 -8.54E-11 Table 10

CT/Dr1r14 0.50 TTL/ImgH 5.57 Vd4 28.5  Vd5 48.1  Vd6 17.5 表十一 In the fourth embodiment, the numerical values of the relational expressions of the optical image capturing lens group 400 are listed in Table 11. It can be seen from Table 11 that the optical image capturing lens set 400 of the fourth embodiment satisfies the requirements of the relational expressions (1) to (14), and it can be seen from Table 9 that the optical image capturing lens set 400 satisfies the requirement of including at least two refractive indices Conditions for lenses greater than or equal to 1.7. relational Numerical value f3/f1 3.22 AT45/EFL 0.90 f3/f2 3.36 AT67/R13 0.43 f4/EFL 2.36 f56/EFL 6.56 R10/EFL -1.13 SL/TTL 0.58 R1/R2 2.70 EFL/R1+EFL/R4 1.07

CT/Dr1r14 0.50 TTL/ImgH 5.57 Vd4 28.5 Vd5 48.1 Vd6 17.5 Table 11

Referring to FIG. 4B , from left to right in the figure are the longitudinal spherical aberration diagram, the astigmatic field curvature diagram and the distortion aberration diagram of the optical image capturing lens group 400 , respectively. It can be seen from the longitudinal spherical aberration diagram that the off-axis light of the three visible light wavelengths of 470nm, 550nm and 650nm at different heights can be concentrated near the imaging point, and the deviation of the imaging point can be controlled within + 0.04mm. It can be seen from the astigmatic field curvature aberration diagram (wavelength 550nm) that the focal length variation of the sagittal aberration in the entire field of view is within + 0.03mm; the aberration in the meridional direction is within the focal length of the entire field of view. The variation is within + 0.03mm; and the distortion aberration can be controlled within 5%. As shown in FIG. 4B , the optical image capturing lens assembly 400 of this embodiment has corrected various aberrations well, 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 image capturing lens group according to a fifth embodiment of the present invention. 5B is a longitudinal spherical aberration diagram (Longitudinal Spherical Aberration), an astigmatism/Field Curvature diagram (Astigmatism/Field Curvature) and a distortion aberration diagram (Distortion) of the fifth embodiment of the present invention in order from left to right.

As shown in FIG. 5A , the optical image capturing lens group 500 of the fifth embodiment includes a first lens 501 , a second lens 502 , a third lens 503 , a fourth lens 504 , an aperture ST, The fifth lens 505 , the sixth lens 506 and the seventh lens 507 . The optical image capturing lens set 500 may further include a filter element 508 , a protective glass 509 and an imaging surface 510 . An image sensing element 520 can be further disposed on the imaging surface 510 to form an imaging device (not marked).

The first lens 501 has a negative refractive power, the object side 501a is convex, the image side 501b is concave, and both the object side 501a and the image side 501b are spherical. The material of the first lens 501 is glass.

The second lens 502 has a negative refractive power, the object side 502a is convex, the image side 502b is concave, and both the object side 502a and the image side 502b are spherical. The material of the second lens 502 is glass.

The third lens 503 has a negative refractive power, the object side 503a is concave, the image side 503b is convex, and both the object side 503a and the image side 503b are aspherical. The material of the third lens 503 is plastic.

The fourth lens 504 has a positive refractive power, its object side 504a is convex, its image side 504b is convex, and its object side 504a and image side 504b are both spherical. The material of the fourth lens 504 is glass.

The fifth lens 505 has a positive refractive power, the object side 505a is convex, the image side 505b is convex, and both the object side 505a and the image side 505b are spherical. The material of the fifth lens 505 is glass.

The sixth lens 506 has a negative refractive power, the object side 506a is concave, the image side 506b is convex, and both the object side 506a and the image side 506b are spherical. The material of the sixth lens 506 is glass. The image side surface 505b of the fifth lens 505 and the object side surface 506a of the sixth lens 506 have the same curvature radius, and are bonded to each other to form a cemented lens.

The seventh lens 507 has a positive refractive power, the object side 507a is convex, the image side 507b is concave, and both the object side 507a and the image side 507b are aspherical. The material of the seventh lens 507 is glass.

The filter element 508 is disposed between the seventh lens 507 and the imaging surface 510 for filtering out light in a specific wavelength range, for example, an infrared filter element (IR Filter). The two surfaces 508a and 508b of the filter element 508 are both flat surfaces, and the material is glass.

The protective glass 509 is disposed on the image sensing element 520, and the two surfaces 509a and 509b are both flat surfaces, and the material is glass.

The image sensor (Image Sensor) 520 is, for example, a Charge-Coupled Device (CCD) Image Sensor or a CMOS Image Sensor.

The detailed optical data and aspheric coefficients of the lens surfaces of the optical image capturing lens group 500 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 as in the form of the first embodiment. Fifth Embodiment EFL= 3.22 mm, Fno = 1.85 , HFOV = 70 deg surface Surface type Radius of curvature (mm) Distance(mm) refractive index Dispersion coefficient Focal length (mm) material subject unlimited unlimited first lens 501a spherical 12.000 0.800 1.748 44.8 -28.63 Glass 501b spherical 7.470 1.001 second lens 502a spherical 31.428 0.400 1.776 49.6 -4.88 Glass 502b spherical 3.357 2.758 third lens 503a Aspherical -3.054 1.360 1.641 24.0 -29.25 plastic 503b Aspherical -4.282 0.100 fourth lens 504a spherical 6.949 3.387 1.734 28.3 7.97 Glass 504b spherical -29.215 0.869 aperture ST flat unlimited 0.594 Fifth lens 505a spherical 12.276 3.000 1.703 48.1 4.24 Glass 505b (glued side) spherical -3.543 0.000 sixth lens 506a (glued side) spherical -3.543 0.500 1.971 17.5 -6.13 Glass 506b spherical -9.369 2.905 seventh lens 507a Aspherical 6.357 2.317 1.518 56.8 13.33 Glass 507b Aspherical 70.041 1.980 filter element 508a flat unlimited 0.210 1.517 64.2 Glass 508b flat unlimited 0.429 protective glass 509a flat unlimited 0.400 1.517 64.2 Glass 509b flat unlimited 0.124 Imaging plane 510 flat unlimited Reference wavelength: 550 nm Table 12 Aspheric coefficients of the fifth embodiment surface 503a 503b 507a 507b K -2.49E-01 -1.14E+00 -1.52E+00 -1.02E+03 A ₂ 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A ₄ 2.61E-03 6.95E-05 -8.40E-04 -5.35E-04 A ₆ 3.66E-04 6.94E-05 -2.26E-05 -9.57E-05 A ₈ -2.71E-05 4.84E-07 -1.66E-06 2.79E-06 A ₁₀ 3.05E-06 -5.74E-07 3.20E-08 -1.50E-07 A ₁₂ -3.32E-08 4.34E-08 -6.97E-09 4.41E-09 A ₁₄ 0.00E+00 0.00E+00 0.00E+00 -1.91E-10 Table 13

CT/Dr1r14 0.59 TTL/ImgH 6.90 Vd4 28.3  Vd5 48.1  Vd6 17.5 表十四 In the fifth embodiment, the numerical values of the relational expressions of the optical image capturing lens group 500 are listed in Table 14. It can be seen from Table 14 that the optical image capturing lens set 500 of the fifth embodiment satisfies the requirements of the relational expressions (1) to (14), and it can be seen from Table 9 that the optical image capturing lens set 500 satisfies the requirement of including at least two refractive indices Conditions for lenses greater than or equal to 1.7. relational Numerical value f3/f1 1.02 AT45/EFL 0.45 f3/f2 6.00 AT67/R13 0.46 f4/EFL 2.47 f56/EFL 3.75 R10/EFL -1.10 SL/TTL 0.54 R1/R2 1.61 EFL/R1+EFL/R4 1.23

CT/Dr1r14 0.59 TTL/ImgH 6.90 Vd4 28.3 Vd5 48.1 Vd6 17.5 Table 14

Referring to FIG. 5B , from left to right in the figure are the longitudinal spherical aberration diagram, the astigmatic field curvature diagram and the distortion aberration diagram of the optical image capturing lens group 500 , respectively. It can be seen from the longitudinal spherical aberration diagram that the off-axis light of the three visible light wavelengths of 470nm, 550nm and 650nm at different heights can be concentrated near the imaging point, and the deviation of the imaging point can be controlled within + 0.03mm. It can be seen from the astigmatic field curvature aberration diagram (wavelength 550nm) that the focal length variation of the sagittal aberration in the entire field of view is within + 0.01mm; the aberration in the meridional direction is within the focal length of the entire field of view. The variation is within + 0.02mm; and the distortion aberration can be controlled within 16%. As shown in FIG. 5B , the optical image capturing lens assembly 500 of this embodiment has corrected various aberrations well, 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 image capturing lens group according to a sixth embodiment of the present invention. FIG. 6B is a longitudinal spherical aberration diagram (Longitudinal Spherical Aberration), an astigmatism/Field Curvature diagram (Astigmatism/Field Curvature) and a distortion aberration diagram (Distortion) of the sixth embodiment of the present invention in order from left to right.

As shown in FIG. 6A , the optical image capturing lens group 600 of the sixth embodiment includes a first lens 601 , a second lens 602 , a third lens 603 , a fourth lens 604 , an aperture ST, The fifth lens 605 , the sixth lens 606 and the seventh lens 607 . The optical image capturing lens set 600 may further include a filter element 608 , a protective glass 609 and an imaging surface 610 . An image sensing element 620 can be further disposed on the imaging surface 610 to form an imaging device (not marked).

The first lens 601 has a negative refractive power, the object side 601a is convex, the image side 601b is concave, and both the object side 601a and the image side 601b are spherical. The material of the first lens 601 is glass.

The second lens 602 has a negative refractive power, the object side 602a is convex, the image side 602b is concave, and both the object side 602a and the image side 602b are spherical. The material of the second lens 602 is glass.

The third lens 603 has a negative refractive power, the object side 603a is concave, the image side 603b is convex, and both the object side 603a and the image side 603b are aspherical. The material of the third lens 603 is glass.

The fourth lens 604 has a positive refractive power, its object side 604a is convex, its image side 604b is concave, and its object side 604a and image side 604b are both spherical. The material of the fourth lens 604 is glass.

The fifth lens 605 has a positive refractive power, the object side 605a is convex, the image side 605b is convex, and both the object side 605a and the image side 605b are spherical. The material of the fifth lens 605 is glass.

The sixth lens 606 has negative refractive power, its object side 606a is concave, its image side 606b is convex, and its object side 606a and image side 606b are both spherical. The material of the sixth lens 606 is glass. The image side surface 605b of the fifth lens 605 and the object side surface 606a of the sixth lens 606 have the same curvature radius, and are bonded to each other to form a cemented lens.

The seventh lens 607 has a positive refractive power, the object side 607a is convex, the image side 607b is concave, and both the object side 607a and the image side 607b are aspherical. The material of the seventh lens 607 is glass.

The filter element 608 is disposed between the seventh lens 607 and the imaging surface 610 for filtering out light in a specific wavelength range, such as an infrared filter element (IR Filter). Both surfaces 608a and 608b of the filter element 608 are flat surfaces, and the material is glass.

The protective glass 609 is disposed on the image sensing element 620, the two surfaces 609a and 609b are both flat surfaces, and the material is glass.

The image sensor (Image Sensor) 620 is, for example, a Charge-Coupled Device (CCD) Image Sensor or a CMOS Image Sensor.

The detailed optical data of the optical image capturing lens group 600 of the sixth embodiment and the aspheric coefficient of the lens surface are listed in Table 15 and Table 16, respectively. In the sixth embodiment, the curve equation of the aspheric surface is expressed as in the form of the first embodiment. Sixth Embodiment EFL= 2.82 mm, Fno = 1.57 , HFOV = 75 deg surface Surface type Radius of curvature (mm) Distance(mm) refractive index Dispersion coefficient Focal length (mm) material subject unlimited unlimited first lens 601a spherical 9.524 0.500 1.858 40.6 -6.89 Glass 601b spherical 3.560 1.496 second lens 602a spherical 6.274 0.500 1.792 47.5 -13.93 Glass 602b spherical 3.858 2.000 third lens 603a Aspherical -3.464 1.215 1.694 31.1 -41.75 Glass 603b Aspherical -4.499 0.100 fourth lens 604a spherical 6.792 1.613 1.768 26.5 9.16 Glass 604b spherical 175.145 1.142 aperture ST flat unlimited 2.000 Fifth lens 605a spherical 11.998 1.962 1.738 48.8 3.90 Glass 605b (glued side) spherical -3.526 0.000 sixth lens 606a (glued side) spherical -3.526 0.500 1.971 17.5 -7.17 Glass 606b spherical -7.647 0.750 seventh lens 607a Aspherical 6.433 1.200 1.571 56.1 17.10 Glass 607b Aspherical 17.589 1.000 filter element 608a flat unlimited 0.210 1.517 64.2 Glass 608b flat unlimited 2.368 protective glass 609a flat unlimited 0.400 1.517 64.2 Glass 609b flat unlimited 0.689 Imaging plane 610 flat unlimited Reference wavelength: 550 nm Table 15 Aspheric coefficients of the sixth embodiment surface 603a 603b 607a 607b K 2.11E-02 -3.11E+00 7.65E-02 -5.40E+01 A ₂ 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A ₄ 3.12E-03 -2.13E-03 3.29E-04 3.23E-03 A ₆ 1.03E-04 8.03E-05 -7.87E-05 -2.24E-04 A ₈ -1.21E-05 -2.27E-06 -2.78E-07 4.41E-06 A ₁₀ 3.37E-06 7.10E-07 3.19E-08 -1.60E-07 A ₁₂ 2.94E-32 6.85E-32 8.82E-31 -1.21E-30 A ₁₄ 0.00E+00 0.00E+00 0.00E+00 -2.35E-37 Table 16

CT/Dr1r14 0.50 TTL/ImgH 5.79 Vd4 26.5  Vd5 48.8  Vd6 17.5 表十七 In the sixth embodiment, the numerical values of the relational expressions of the optical image capturing lens group 600 are listed in Table 17. It can be seen from Table 17 that the optical image capturing lens set 600 of the sixth embodiment satisfies the requirements of the relational expressions (1) to (14), and it can be seen from Table 15 that the optical image capturing lens set 600 satisfies the requirement of including at least two refractions Conditions for lenses with a ratio greater than or equal to 1.7. relational Numerical value f3/f1 6.06 AT45/EFL 1.12 f3/f2 3.00 AT67/R13 0.12 f4/EFL 3.25 f56/EFL 3.001 R10/EFL -1.251 SL/TTL 0.56 R1/R2 2.68 EFL/R1+EFL/R4 1.03

CT/Dr1r14 0.50 TTL/ImgH 5.79 Vd4 26.5 Vd5 48.8 Vd6 17.5 Table 17

Referring to FIG. 6B , from left to right in the figure are the longitudinal spherical aberration diagram, the astigmatic field curvature diagram, and the distortion aberration diagram of the optical image capturing lens group 600 , respectively. It can be seen from the longitudinal spherical aberration diagram that the off-axis light of the three visible light wavelengths of 470nm, 550nm and 650nm at different heights can be concentrated near the imaging point, and the deviation of the imaging point can be controlled within + 0.05mm. From the astigmatic field curvature aberration diagram (wavelength 550nm), it can be seen that the focal length variation of the sagittal aberration in the entire field of view is within + 0.03mm; the aberration in the meridional direction is within the focal length of the entire field of view. The variation is within + 0.04mm; and the distortion aberration can be controlled within 10%. As shown in FIG. 6B , the optical image capturing lens assembly 600 of this embodiment has corrected various aberrations well, and meets the imaging quality requirements of the optical system. Seventh Embodiment

Referring to FIG. 7A and FIG. 7B , FIG. 7A is a schematic diagram of an optical image capturing lens group according to a seventh embodiment of the present invention. 7B is a longitudinal spherical aberration diagram (Longitudinal Spherical Aberration), an astigmatic field curvature diagram (Astigmatism/Field Curvature) and a distortion aberration diagram (Distortion) in order from left to right.

As shown in FIG. 7A , the optical image capturing lens group 700 of the seventh embodiment includes a first lens 701 , a second lens 702 , a third lens 703 , a fourth lens 704 , an aperture ST, The fifth lens 705 , the sixth lens 706 and the seventh lens 707 . The optical image capturing lens group 700 may further include a filter element 708 , a protective glass 709 and an imaging surface 710 . An image sensing element 720 can be further disposed on the imaging surface 710 to form an imaging device (not marked).

The first lens 701 has a negative refractive power, the object side 701a is convex, the image side 701b is concave, and both the object side 701a and the image side 701b are spherical. The material of the first lens 701 is glass.

The second lens 702 has a negative refractive power, the object side 702a is convex, the image side 702b is concave, and both the object side 702a and the image side 702b are spherical. The material of the second lens 702 is glass.

The third lens 703 has a negative refractive power, the object side 703a is concave, the image side 703b is convex, and both the object side 703a and the image side 703b are aspherical. The material of the third lens 703 is plastic.

The fourth lens 704 has a positive refractive power, its object side 704a is convex, its image side 704b is convex, and its object side 704a and image side 704b are both spherical. The material of the fourth lens 704 is glass.

The fifth lens 705 has a positive refractive power, the object side 705a is convex, the image side 705b is convex, and both the object side 705a and the image side 705b are spherical. The material of the fifth lens 705 is glass.

The sixth lens 706 has negative refractive power, the object side 706a is concave, the image side 706b is convex, and both the object side 706a and the image side 706b are spherical. The material of the sixth lens 706 is glass. The image side surface 705b of the fifth lens 705 and the object side surface 706a of the sixth lens 706 have the same curvature radius, and are bonded to each other to form a cemented lens.

The seventh lens 707 has a positive refractive power, the object side 707a is convex, the image side 707b is concave, and both the object side 707a and the image side 707b are aspherical. The material of the seventh lens 707 is glass.

The filter element 708 is disposed between the seventh lens 707 and the imaging surface 710 for filtering out light in a specific wavelength range, such as an infrared filter element (IR Filter). Both surfaces 708a and 708b of the filter element 708 are flat surfaces, and the material is glass.

The protective glass 709 is disposed on the image sensing element 720 , the two surfaces 709 a and 709 b are both flat surfaces, and the material is glass.

The image sensor (Image Sensor) 720 is, for example, a Charge-Coupled Device (CCD) Image Sensor or a CMOS Image Sensor.

The detailed optical data and aspheric coefficients of the lens surfaces of the optical image capturing lens group 700 of the seventh embodiment are listed in Table 18 and Table 19, respectively. In the seventh embodiment, the curve equation of the aspheric surface is expressed as in the form of the first embodiment. Seventh Embodiment EFL = 2.36 mm, Fno = 1.58, HFOV = 80 deg surface Surface type Radius of curvature (mm) Distance(mm) refractive index Dispersion coefficient Focal length (mm) material subject unlimited unlimited first lens 701a spherical 8.000 0.500 1.777 49.6 -9.37 Glass 701b spherical 3.708 1.359 second lens 702a spherical 7.426 0.500 1.777 49.6 -6.71 Glass 702b spherical 2.974 3.052 third lens 703a Aspherical -2.994 1.100 1.668 20.4 -25.77 plastic 703b Aspherical -4.158 0.300 fourth lens 704a spherical 6.425 1.400 1.734 28.7 6.46 Glass 704b spherical -16.370 0.401 aperture ST flat unlimited 2.015 Fifth lens 705a spherical 15.050 2.100 1.702 51.1 3.76 Glass 705b (glued side) spherical -3.020 0.000 sixth lens 706a (glued side) spherical -3.020 0.400 1.971 17.5 -4.98 Glass 706b spherical -8.570 1.127 seventh lens 707a Aspherical 5.620 1.800 1.550 53.6 10.43 Glass 707b Aspherical 259.395 0.522 filter element 708a flat unlimited 0.210 1.517 64.2 Glass 708b flat unlimited 1.804 protective glass 709a flat unlimited 0.400 1.517 64.2 Glass 709b flat unlimited 0.532 Imaging plane 710 flat unlimited Reference wavelength: 550 nm Table 18 Aspheric coefficients of the seventh embodiment surface 703a 703b 707a 707b K -2.27E-01 -1.27E+00 -6.15E-01 9.45E+01 A ₂ 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A ₄ 3.66E-03 4.05E-04 -5.27E-04 7.92E-04 A ₆ 2.90E-04 8.47E-05 4.67E-05 -3.06E-05 A ₈ -1.22E-05 -2.42E-06 -2.53E-07 4.39E-06 A ₁₀ 3.27E-06 6.83E-07 3.10E-08 -1.57E-07 A ₁₂ 2.94E-32 6.85E-32 8.82E-31 -1.21E-30 A ₁₄ 0.00E+00 0.00E+00 0.00E+00 -2.35E-37 Table 19

CT/Dr1r14 0.49 TTL/ImgH 6.03 Vd4 28.7  Vd5 51.1  Vd6 17.5 表二十 In the seventh embodiment, the numerical values of the relational expressions of the optical image capturing lens group 700 are listed in Table 20. It can be seen from Table 20 that the optical image capturing lens set 700 of the seventh embodiment satisfies the requirements of the relational expressions (1) to (14), and it can be seen from Table 18 that the optical image capturing lens set 700 satisfies the requirement of including at least two refractions Conditions for lenses with a ratio greater than or equal to 1.7. relational Numerical value f3/f1 2.75 AT45/EFL 1.02 f3/f2 3.84 AT67/R13 0.20 f4/EFL 2.73 f56/EFL 6.002 R10/EFL -1.278 SL/TTL 0.56 R1/R2 2.16 EFL/R1+EFL/R4 1.09

CT/Dr1r14 0.49 TTL/ImgH 6.03 Vd4 28.7 Vd5 51.1 Vd6 17.5 Table 20

Referring to FIG. 7B , from left to right in the figure are the longitudinal spherical aberration diagram, the astigmatic field curvature diagram and the distortion aberration diagram of the optical image capturing lens group 700 , respectively. It can be seen from the longitudinal spherical aberration diagram that the off-axis light of the three visible light wavelengths of 470nm, 550nm and 650nm at different heights can be concentrated near the imaging point, and the deviation of the imaging point can be controlled within + 0.03mm. From the astigmatic field curvature aberration diagram (wavelength 550nm), it can be seen that the focal length variation of the sagittal aberration in the entire field of view is within + 0.02mm; the aberration in the meridional direction is within the focal length of the entire field of view. The variation is within + 0.03mm; and the distortion aberration can be controlled within 3%. As shown in FIG. 7B , the optical image capturing lens assembly 700 of this embodiment has corrected various aberrations well, and meets the imaging quality requirements of the optical system. Eighth Embodiment

Referring to FIGS. 8A and 8B , FIG. 8A is a schematic diagram of an optical image capturing lens group according to an eighth embodiment of the present invention. 8B is a longitudinal spherical aberration diagram (Longitudinal Spherical Aberration), an astigmatism/Field Curvature diagram (Astigmatism/Field Curvature), and a distortion aberration diagram (Distortion) in order from left to right according to the eighth embodiment of the present invention.

As shown in FIG. 8A , the optical image capturing lens group 800 of the eighth embodiment includes a first lens 801 , a second lens 802 , a third lens 803 , a fourth lens 804 , an aperture ST, The fifth lens 805 , the sixth lens 806 and the seventh lens 807 . The optical image capturing lens group 800 may further include a filter element 808 , a protective glass 809 and an imaging surface 810 . An image sensing element 820 can be further disposed on the imaging surface 810 to form an imaging device (not marked).

The first lens 801 has a negative refractive power, the object side 801a is convex, the image side 801b is concave, and both the object side 801a and the image side 801b are spherical. The material of the first lens 801 is glass.

The second lens 802 has a negative refractive power, the object side 802a is convex, the image side 802b is concave, and both the object side 802a and the image side 802b are spherical. The material of the second lens 802 is glass.

The third lens 803 has a negative refractive power, the object side 803a is concave, the image side 803b is convex, and both the object side 803a and the image side 803b are aspherical. The material of the third lens 803 is plastic.

The fourth lens 804 has a positive refractive power, its object side 804a is convex, its image side 804b is convex, and its object side 804a and image side 804b are both spherical. The material of the fourth lens 804 is glass.

The fifth lens 805 has a positive refractive power, the object side 805a is convex, the image side 805b is convex, and both the object side 805a and the image side 805b are spherical. The material of the fifth lens 805 is glass.

The sixth lens 806 has negative refractive power, the object side 806a is concave, the image side 806b is convex, and both the object side 806a and the image side 806b are spherical. The material of the sixth lens 806 is glass. The image side surface 805b of the fifth lens 805 and the object side surface 806a of the sixth lens 806 have the same curvature radius, and are bonded to each other to form a cemented lens.

The seventh lens 807 has a positive refractive power, the object side 807a is convex, the image side 807b is concave, and both the object side 807a and the image side 807b are aspherical. The material of the seventh lens 807 is plastic.

The filter element 808 is disposed between the seventh lens 807 and the imaging surface 810 for filtering out light in a specific wavelength range, such as an infrared filter element (IR Filter). Both surfaces 808a and 808b of the filter element 808 are flat surfaces, and the material is glass.

The protective glass 809 is disposed on the image sensing element 820, the two surfaces 809a and 809b are both flat surfaces, and the material is glass.

The Image Sensor 820 is, for example, a Charge-Coupled Device (CCD) Image Sensor or a CMOS Image Sensor.

The detailed optical data and aspheric coefficient of the lens surface of the optical image capturing lens group 800 of the eighth embodiment are listed in Table 21 and Table 22, respectively. In the eighth embodiment, the curve equation of the aspheric surface is expressed as in the form of the first embodiment. Eighth Embodiment EFL = 2.22 mm, Fno = 1.44, HFOV = 85 deg surface Surface type Radius of curvature (mm) Distance(mm) refractive index Dispersion coefficient Focal length (mm) material subject unlimited unlimited first lens 801a spherical 9.382 0.500 1.808 46.6 -8.74 Glass 801b spherical 3.932 1.214 second lens 802a spherical 8.231 0.500 1.776 49.6 -5.94 Glass 802b spherical 2.876 2.593 third lens 803a Aspherical -2.908 1.215 1.657 21.5 -22.33 plastic 803b Aspherical -4.227 0.100 fourth lens 804a spherical 6.567 1.613 1.746 28.3 6.43 Glass 804b spherical -15.876 1.784 aperture ST flat unlimited 0.860 Fifth lens 805a spherical 13.748 1.962 1.696 53.2 3.77 Glass 805b (glued side) spherical -3.055 0.000 sixth lens 806a (glued side) spherical -3.055 0.500 1.971 17.5 -5.66 Glass 806b spherical -7.446 1.328 seventh lens 807a Aspherical 5.362 2.177 1.533 55.8 10.33 plastic 807b Aspherical 175.613 0.522 filter element 808a flat unlimited 0.210 1.517 64.2 Glass 808b flat unlimited 1.802 protective glass 809a flat unlimited 0.400 1.517 64.2 Glass 809b flat unlimited 0.115 Imaging plane 810 flat unlimited Reference wavelength: 550 nm Table 21 Aspheric coefficient of the eighth embodiment surface 803a 803b 807a 807b K -3.02E-01 -1.04E+00 -3.80E-01 -1.62E+04 A ₂ 0.00E+00 0.00E+00 0.00E+00 0.00E+00 A ₄ 2.86E-03 5.28E-04 -1.22E-03 2.08E-04 A ₆ 2.25E-04 1.56E-04 6.41E-05 -4.02E-05 A ₈ 3.64E-05 -1.05E-05 -1.03E-06 4.08E-06 A ₁₀ -5.50E-06 1.13E-06 4.37E-08 3.21E-07 A ₁₂ 3.89E-07 -4.29E-09 -2.23E-08 -8.75E-08 A ₁₄ 0.00E+00 0.00E+00 0.00E+00 1.99E-09 Table 22

CT/Dr1r14 0.52 TTL/ImgH 6.47 Vd4 28.3  Vd5 53.2  Vd6 17.5 表二十三 In the eighth embodiment, the numerical values of the relational expressions of the optical image capturing lens group 800 are listed in Table 23. It can be seen from Table 23 that the optical image capturing lens group 800 of the eighth embodiment satisfies the requirements of the relational expressions (1) to (14), and it can be seen from Table 21 that the optical image capturing lens group 800 satisfies the requirements including at least two Conditions for lenses with an index of refraction greater than or equal to 1.7. relational Numerical value f3/f1 2.56 AT45/EFL 1.19 f3/f2 3.76 AT67/R13 0.25 f4/EFL 2.89 f56/EFL 4.996 R10/EFL -1.373 SL/TTL 0.51 R1/R2 2.39 EFL/R1+EFL/R4 1.01

CT/Dr1r14 0.52 TTL/ImgH 6.47 Vd4 28.3 Vd5 53.2 Vd6 17.5 Table 23

Referring to FIG. 8B , from left to right in the figure are the longitudinal spherical aberration diagram, the astigmatic field curvature diagram, and the distortion aberration diagram of the optical image capturing lens group 800 , respectively. It can be seen from the longitudinal spherical aberration diagram that the off-axis light of the three visible light wavelengths of 470nm, 550nm and 650nm at different heights can be concentrated near the imaging point, and the deviation of the imaging point can be controlled within + 0.03mm. From the astigmatic field curvature aberration diagram (wavelength 550nm), it can be seen that the focal length variation of the sagittal aberration in the entire field of view is within + 0.02mm; the aberration in the meridional direction is within the focal length of the entire field of view. The variation is within + 0.03mm; and the distortion aberration can be controlled within 3%. As shown in FIG. 8B , the optical image capturing lens group 800 of this embodiment has corrected various aberrations well, and meets the imaging quality requirements of the optical system. Ninth Embodiment

A ninth embodiment of the present invention is an imaging device, which includes the optical image capturing lens group of the aforementioned first to eighth embodiments, and an image sensing element. The image sensing element is, for example, a Charge-Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (Complementary Metal Oxide Semiconductor, CMOS) image sensing element. The imaging device is, for example, a camera module for vehicle photography, a camera module for portable electronic products, or a camera module for surveillance cameras. Tenth Embodiment

Please refer to FIG. 9 , which is a schematic diagram of an electronic device 1000 according to a tenth embodiment of the present invention. As shown, the electronic device 1000 includes an imaging device 1010 . The imaging device 1010 is, for example, the imaging device of the aforementioned ninth embodiment, which may be composed of the optical image capturing lens group of the present invention and an image sensing element. The electronic device 1000 is, for example, a vehicle camera, a surveillance camera, or an aerial camera.

Although the present invention is described using the foregoing embodiments, these embodiments are not intended to limit the scope of the present invention. For those skilled in the art to which the present invention pertains, various changes in form and details can still be made with reference to the content of the embodiments disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, it should be understood here that the present invention is subject to the definition of the following patent application scope, and any changes made within the application patent scope or its equivalent scope shall still fall into the application of the present invention. within the scope of the patent.

100, 200, 300, 400, 500, 600, 700, 800: Optical image capture lens group 101, 201, 301, 401, 501, 601, 701, 801: the first lens 102, 202, 302, 402, 502, 602, 702, 802: Second lens 103, 203, 303, 403, 503, 603, 703, 803: The third lens 104, 204, 304, 404, 504, 604, 704, 804: Fourth lens 105, 205, 305, 405, 505, 605, 705, 805: Fifth lens 106, 206, 306, 406, 506, 606, 706, 806: Sixth lens 107, 207, 307, 407, 507, 607, 707, 807: seventh lens 108, 208, 308, 408, 508, 608, 708, 808: filter elements 109, 209, 309, 409, 509, 609, 709, 809: Protective glass 110, 210, 310, 410, 510, 610, 710, 810: Imaging plane 101a, 201a, 301a, 401a, 501a, 601a, 701a, 801a: the side of the first lens 101b, 201b, 301b, 401b, 501b, 601b, 701b, 801b: the image side of the first lens 102a, 202a, 302a, 402a, 502a, 602a, 702a, 802a: the side of the second lens 102b, 202b, 302b, 402b, 502b, 602b, 702b, 802b: the image side of the second lens 103a, 203a, 303a, 403a, 503a, 603a, 703a, 803a: the side of the third lens 103b, 203b, 303b, 403b, 503b, 603b, 703b, 803b: the image side of the third lens 104a, 204a, 304a, 404a, 504a, 604a, 704a, 804a: the side of the fourth lens 104b, 204b, 304b, 404b, 504b, 604b, 704b, 804b: the image side of the fourth lens 105a, 205a, 305a, 405a, 505a, 605a, 705a, 805a: the side of the fifth lens 105b, 205b, 305b, 405b, 505b, 605b, 705b, 805b: the image side of the fifth lens 106a, 206a, 306a, 406a, 506a, 606a, 706a, 806a: the side of the sixth lens 106b, 206b, 306b, 406b, 506b, 606b, 706b, 806b: the image side of the sixth lens 107a, 207a, 307a, 407a, 507a, 607a, 707a, 807a: the side of the seventh lens 107b, 207b, 307b, 407b, 507b, 607b, 707b, 807b: the image side of the seventh lens 108a, 108b, 208a, 208b, 308a, 308b, 408a, 408b, 508a, 508b, 608a, 608b, 708a, 708b, 808a, 708b: the second surface of the filter element 109a, 109b, 209a, 209b, 309a, 309b, 409a, 409b, 509a, 509b, 609a, 609b, 709a, 709b, 809a, 809b: The second surface of the protective glass 120, 220, 320, 420, 520, 620, 720, 820: image sensing elements 1000: Electronics 1010: Imaging Devices I: Optical axis ST: Aperture

[FIG. 1A] is a schematic diagram of an optical image capturing lens assembly according to the first embodiment of the present invention; [FIG. 1B] are the longitudinal spherical aberration diagram, the astigmatic field curvature diagram, and the distortion aberration diagram of the first embodiment of the present invention in order from left to right; [FIG. 2A] is a schematic diagram of an optical image capturing lens assembly according to the second embodiment of the present invention; [FIG. 2B] is a longitudinal spherical aberration diagram, an astigmatic field curvature aberration diagram, and a distortion aberration diagram of the second embodiment of the present invention in order from left to right; [FIG. 3A] is a schematic diagram of an optical image capturing lens assembly according to a third embodiment of the present invention; [FIG. 3B] is the longitudinal spherical aberration diagram, the astigmatic field curvature aberration diagram and the distortion aberration diagram of the third embodiment of the present invention in order from left to right; [FIG. 4A] is a schematic diagram of an optical image capturing lens assembly according to a fourth embodiment of the present invention; [FIG. 4B] is the longitudinal spherical aberration diagram, the astigmatic field curvature aberration diagram and the distortion aberration diagram of the fourth embodiment of the present invention in order from left to right; [FIG. 5A] is a schematic diagram of an optical image capturing lens assembly according to a fifth embodiment of the present invention; [FIG. 5B] is the longitudinal spherical aberration diagram, the astigmatic field curvature diagram and the distortion aberration diagram of the fifth embodiment of the present invention in order from left to right; [FIG. 6A] is a schematic diagram of an optical image capturing lens assembly according to a sixth embodiment of the present invention; [FIG. 6B] are the longitudinal spherical aberration diagram, the astigmatic field curvature diagram and the distortion aberration diagram of the sixth embodiment of the present invention in order from left to right; [ FIG. 7A ] is a schematic diagram of an optical image capturing lens assembly according to a seventh embodiment of the present invention; [FIG. 7B] From left to right are longitudinal spherical aberration diagrams, astigmatic field curvature diagrams, and distortion aberration diagrams of the seventh embodiment of the present invention; [ FIG. 8A ] is a schematic diagram of an optical image capturing lens assembly according to an eighth embodiment of the present invention; [FIG. 8B] is a longitudinal spherical aberration diagram, an astigmatic field curvature aberration diagram, and a distortion aberration diagram of the eighth embodiment of the present invention in order from left to right; and [FIG. 9] is a schematic diagram of an electronic device according to a tenth embodiment of the present invention.

100: Optical image capture lens group

101: The first lens

102: Second lens

103: The third lens

104: Fourth lens

105: Fifth lens

106: Sixth lens

107: Seventh Lens

108: filter element

109: Protective glass

110: Imaging plane

101a: The side of the object of the first lens

101b: Side of the image of the first lens

102a: The side of the object of the second lens

102b: Image side of the second lens

103a: The side of the object of the third lens

103b: Side view of the image of the third lens

104a: The side of the object of the fourth lens

104b: The image side of the fourth lens

105a: The side of the object of the fifth lens

105b: Side view of the image of the fifth lens

106a: The side of the sixth lens

106b: Side view of the image of the sixth lens

107a: The side of the seventh lens

107b: Side view of the image of the seventh lens

108a, 108b: the second surface of the filter element

109a, 109b: The second surface of the protective glass

120: Image Sensing Components

I: Optical axis

ST: Aperture

Claims (17)

An optical image capturing lens group, from the object side to the image side, comprises: a first lens with negative refractive power, the object side is convex, and the image side is concave; a second lens with negative refractive power, the object side is convex and the image side is concave; a third lens with negative refractive power, the object side is concave and the image side is convex; a fourth lens, with positive refractive power, and its object side surface is convex; an aperture; a fifth lens with positive refractive power, the image side surface is convex, and the image side surface is convex; a sixth lens with negative refractive power, the object side is concave and the image side is convex, wherein the fifth lens and the sixth lens constitute a cemented lens; and A seventh lens with positive refractive power, the object side is convex and the image side is concave; wherein, the optical image capturing lens group has seven lenses in total; wherein, the focal length of the first lens is f1, the The focal length of the three lenses is f3, which satisfies the following relationship: 0.95<f3/f1<6.2. According to the optical image capturing lens set of claim 1, the distance on the optical axis from the image side surface of the fourth lens to the object side surface of the fifth lens is AT45, and the focal length of the optical image capturing lens set is EFL , which satisfies the following relation: 0.4<AT45/EFL<1.3. For the optical image capturing lens set of claim 1, wherein the focal length of the first lens is f2, and the focal length f3 of the third lens satisfies the following relationship: 2.9<f3/f2<7. An optical image capturing lens group, from the object side to the image side, comprises: a first lens with negative refractive power, the object side is convex, and the image side is concave; a second lens with negative refractive power, the object side is convex and the image side is concave; a third lens with negative refractive power, the object side is concave and the image side is convex; a fourth lens, with positive refractive power, and its object side surface is convex; an aperture; a fifth lens with positive refractive power, the image side surface is convex, and the image side surface is convex; a sixth lens with negative refractive power, the object side is concave and the image side is convex, wherein the fifth lens and the sixth lens constitute a cemented lens; and A seventh lens with positive refractive power, the object side is convex and the image side is concave; wherein, the optical image capturing lens group has seven lenses in total; wherein, the focal length of the second lens is f2, the The focal length of the three lenses is f3, the distance on the optical axis from the image side of the sixth lens to the object side of the seventh lens is AT67, and the radius of curvature of the object side of the seventh lens is R13, which satisfies the following relationship: 2.9 < f3/f2 < 7; and 0.1<AT67/R13<0.6. For the optical image capturing lens set of item 1 or 4 of the scope of the application, wherein the focal length of the fourth lens is f4, and the effective focal length EFL of the optical image capturing lens set satisfies the following relationship Mode: 2<f4/EFL<3.5. According to the optical image capturing lens set as claimed in item 1 or 4 of the claimed scope, wherein the combined focal length of the fifth lens and the sixth lens is f56, and the difference between it and the effective focal length EFL of the optical image capturing lens set is f56. , the system satisfies the following relation: 2.7<f56/EFL<7.5. According to the optical image capturing lens set as claimed in item 1 or item 4 of the scope of the patent application, wherein the curvature radius of the image side surface of the fifth lens is R10, and the relationship between it and the effective focal length EFL of the optical image capturing lens set is Satisfy the following relation: -1.5<R10/EFL<-0.9. For the optical image capturing lens set of item 1 or item 4 of the claimed scope, the distance from the aperture to the imaging plane of the optical image capturing lens set on the optical axis is SL, and the object side of the first lens is SL The distance between the imaging plane of the optical image capturing lens group on the optical axis is TTL, which satisfies the following relationship: 0.4<SL/TTL<0.7. For the optical image capturing lens set of item 1 or item 4 of the scope of the application, wherein the curvature radius of the object side surface of the first lens is R1, and the curvature radius of the image side surface is R2, the following relational expressions are satisfied: 1.3<R1/R2<3.2. For the optical image capturing lens set of item 1 or item 4 of the claimed scope, wherein the curvature radius of the object side surface of the first lens is R1, and the curvature radius of the image side surface of the second lens is R4, the optical image capturing The effective focal length of the lens group is EFL, which satisfies the following relationship: 0.8<EFL/R1+EFL/R4<1.4. According to the optical image capturing lens set of item 1 or item 4 of the claimed scope, the sum of the thicknesses of the first lens to the seventh lens on the optical axis is

CT, the distance on the optical axis from the object side of the first lens to the image side of the seventh lens is Dr1r14, which satisfies the following relationship: 0.4<

CT/Dr1r14<0.65. For the optical image capturing lens set of item 1 or 4 of the scope of application, wherein the distance from the object side of the first lens to the imaging surface of the optical image capturing lens set on the optical axis is TTL, the optical image The maximum image height of the capture lens group on the imaging plane is ImgH, which satisfies the following relationship: 4<TTL/ImgH<7.5. For the optical image capturing lens set of item 1 or item 4 of the scope of the application, wherein the dispersion coefficient of the fifth lens is Vd5, and the dispersion coefficient of the sixth lens is Vd6, which satisfy the following relationship: Vd5>Vd6. For the optical image capturing lens set of item 1 or 4 of the scope of the application, wherein the dispersion coefficient of the fourth lens is Vd4, which satisfies the following relational expression: Vd4<45. According to the optical image capturing lens set of item 1 or item 4 of the claimed scope, the optical image capturing lens set includes at least two lenses with a refractive index greater than or equal to 1.7. An imaging device comprising the optical image capturing lens set as claimed in item 1 or 4 of the scope of the application, and an image sensing element, wherein the image sensing element is disposed between the optical image capturing lens set imaging surface. An electronic device comprising the imaging device as claimed in item 16 of the patent application scope.

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