CN216622826U - Light and thin imaging lens and shooting device - Google Patents

Abstract

The utility model discloses a light and thin imaging lens and a shooting device, wherein a first lens, a second lens, a third lens and a fourth lens are sequentially arranged from an object side to an image side, and the lens meets the following conditions: (V1+ V2)/(V5+ V6) ═ 0.97; fno < 1.8; v1 is the maximum refractive index of the first lens, V2 is the maximum refractive index of the second lens, V5 is the maximum refractive index of the fifth lens, V6 is the maximum refractive index of the sixth lens, and Fno is the aperture value of the thin and light imaging lens. According to the utility model, the maximum refractive indexes of the first lens, the second lens, the fifth lens and the sixth lens in the lens and the aperture value of the lens meet specific conditions, so that the lens has good correction capability and imaging capability while the size of the lens is reduced, and further the imaging effect can meet the use requirement.

Description

Light and thin imaging lens and shooting device

Technical Field

The utility model relates to the technical field of imaging lenses, in particular to a light and thin imaging lens and a shooting device.

Background

In recent years, with the spread of portable smart devices, the optical lens mounted in the portable smart device is required to be shortened in length, but the length is shortened while good optical performance is still achieved.

In order to shorten the length, the most direct method is to reduce the number of lenses, and as some lenses composed of five to six lenses are disclosed in the prior art, compared with a lens including eight nine lenses, such a lens can achieve better volume miniaturization, but at the same time, the loss of the imaging effect is caused, so that the imaging quality is difficult to meet the actual requirement.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies of the prior art, the present invention provides a light and thin imaging lens and a photographing device, which solve the above problems in the prior art.

In order to achieve the above purpose, the present invention provides the following technical solutions:

a light and thin imaging lens is provided, wherein a first lens to a sixth lens are sequentially arranged from an object side to an image side, and all surfaces between an object side surface of the first lens and an image side surface of the sixth lens are aspheric surfaces;

the first lens element, the second lens element, the fifth lens element and the sixth lens element have convex object-side surfaces at paraxial regions thereof and concave image-side surfaces at paraxial regions thereof; the object side surface and the image side surface of the third lens are convex at a paraxial region; the object side surface of the fourth lens element is concave at a paraxial region, and the image side surface thereof is convex at a paraxial region; the first lens element, the second lens element, the third lens element and the fifth lens element have positive refractive power, and the fourth lens element and the sixth lens element have negative refractive power;

the light and thin imaging lens meets the following conditions:

(V1+V2)/(V5+V6)＝0.97；

Fno＜1.8；

wherein V1 is the maximum refractive index of the first lens element, V2 is the maximum refractive index of the second lens element, V5 is the maximum refractive index of the fifth lens element, V6 is the maximum refractive index of the sixth lens element, and Fno is the aperture value of the lightweight imaging lens.

Optionally, the light-weight and thin-type imaging lens further satisfies the following conditions:

-2≦f6/(R61+R62)＜0；

wherein, R61 is the curvature radius of the object-side surface of the sixth lens element, R62 is the curvature radius of the image-side surface of the sixth lens element, and f6 is the focal length of the sixth lens element.

Optionally, the light-weight and thin-type imaging lens further satisfies the following conditions:

0.5＜f/f2＜1；

wherein f is the focal length of the thin and light imaging lens, and f2 is the focal length of the second lens.

Optionally, the light-weight and thin-type imaging lens further satisfies the following conditions:

|V3-V4|＝32.59；

where V3 is the maximum refractive index of the third lens, and V4 is the maximum refractive index of the fourth lens.

Optionally, the light-weight and thin-type imaging lens further satisfies the following conditions:

1＜f/f3＜1.2；

wherein f is the focal length of the thin and light imaging lens, and f3 is the focal length of the third lens element.

Optionally, the light-weight and thin-type imaging lens further satisfies the following conditions:

-0.5＜R41/f＜0；

wherein R41 is the curvature radius of the object-side surface of the fourth lens element, and f is the focal length of the thin and light imaging lens.

Optionally, the light-weight and thin-type imaging lens further satisfies the following conditions:

1.5＜R11/SD11＜2；

wherein R11 is the radius of curvature of the object-side surface of the first lens, and SD11 is the maximum effective radius of the object-side surface of the first lens.

Optionally, the light-weight and thin-type imaging lens further satisfies the following conditions:

1＜(R31+R32)/f＜2；

wherein, R31 is the curvature radius of the object side surface of the third lens, and R32 is the curvature radius of the image side surface of the third lens.

Optionally, an object side of the first lens is provided with a diaphragm.

The utility model also provides a shooting device which comprises the light and thin imaging lens.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model provides a light and thin imaging lens and a shooting device, wherein the maximum refractive index of a first lens, a second lens, a fifth lens and a sixth lens in the lens and the aperture value of the lens meet specific conditions, so that the lens has good correction capability and imaging capability while the size of the lens is reduced, and the imaging effect can meet the use requirement.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic diagram illustrating a thin and light imaging lens according to a first embodiment of the utility model;

fig. 2 is a graph illustrating astigmatism and distortion curves of a thin and light imaging lens according to an embodiment of the utility model;

fig. 3 is a spherical aberration curve diagram of a light and thin imaging lens according to a first embodiment of the utility model;

fig. 4 is a schematic diagram illustrating a light and thin imaging lens according to a second embodiment of the utility model;

fig. 5 is a graph illustrating astigmatism and distortion curves of a light and thin imaging lens according to a second embodiment of the utility model;

fig. 6 is a spherical aberration curve diagram of a light and thin imaging lens according to a second embodiment of the utility model;

fig. 7 is a schematic diagram illustrating a thin and light imaging lens according to a third embodiment of the utility model;

fig. 8 is a graph illustrating astigmatism and distortion curves of a thin and light imaging lens according to a third embodiment of the utility model from left to right;

fig. 9 is a spherical aberration curve diagram of a light and thin imaging lens according to a third embodiment of the utility model;

fig. 10 is a schematic diagram illustrating a thin and light imaging lens according to a fourth embodiment of the utility model;

fig. 11 is a graph illustrating astigmatism and distortion curves of a light and thin imaging lens according to a fourth embodiment of the utility model from left to right;

fig. 12 is a spherical aberration curve diagram of a light and thin imaging lens according to a fourth embodiment of the utility model;

fig. 13 is a schematic diagram illustrating a thin and light imaging lens according to a fifth embodiment of the utility model;

fig. 14 is a graph illustrating astigmatism and distortion curves of a thin and light imaging lens according to a fifth embodiment of the disclosure in order from left to right;

fig. 15 is a spherical aberration curve diagram of a light and thin imaging lens according to a fifth embodiment of the utility model;

fig. 16 is a schematic diagram illustrating a thin and light imaging lens according to a sixth embodiment of the utility model;

fig. 17 is a graph illustrating astigmatism and distortion curves of a thin and light imaging lens according to a sixth embodiment of the disclosure in order from left to right;

fig. 18 is a spherical aberration curve diagram of a light-weight and thin imaging lens according to a sixth embodiment of the utility model;

fig. 19 is a schematic diagram illustrating a thin and light imaging lens according to a seventh embodiment of the utility model;

fig. 20 is a graph illustrating astigmatism and distortion curves of a thin and light imaging lens according to a seventh embodiment of the disclosure in order from left to right;

fig. 21 is a spherical aberration curve diagram of a light-weight and thin imaging lens according to a seventh embodiment of the disclosure.

In the above figures: e1, first lens; e2, second lens; e3, third lens; e4, fourth lens; e5, fifth lens; e6, sixth lens; e7, infrared filters; STO, stop;

s1, the object side surface of the first lens; s2, an image side surface of the first lens; s3, the object side surface of the second lens; s4, an image side surface of the second lens; s5, the object side surface of the third lens; s6, an image side surface of the third lens; s7, the object side surface of the fourth lens; s8, an image side surface of the fourth lens element; s9, the object side surface of the fifth lens; s10, an image side surface of the fifth lens element; s11, the object-side surface of the sixth lens element; s12, an image side surface of the sixth lens element; and S13, imaging surface.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the referred devices or elements must have the specific orientations, be configured to operate in the specific orientations, and thus are not to be construed as limitations of the present invention.

The utility model provides a light and thin imaging lens, which is characterized in that a first lens, a second lens and a third lens are sequentially arranged from an object side to an image side, a diaphragm is arranged at the object side of the first lens, and all surfaces between an object side surface of the first lens and the image side surface of the third lens are aspheric surfaces. The light and thin imaging lens further comprises an infrared filter, and the infrared filter is arranged between the sixth lens and the imaging surface.

The object-side surface of the first lens element, the object-side surface of the second lens element, the object-side surface of the fifth lens element and the object-side surface of the sixth lens element are convex at a paraxial region thereof, and the image-side surface of the first lens element, the image-side surface of the second lens element, the image-side surface of the fifth lens element and the image-side surface of the sixth lens element are concave at a paraxial region thereof; the object-side surface and the image-side surface of the third lens element are convex at the paraxial region; the fourth lens element has a concave object-side surface at a paraxial region and a convex image-side surface at a paraxial region.

In addition, the first lens element, the second lens element, the third lens element and the fifth lens element have positive refractive power, and the fourth lens element and the sixth lens element have negative refractive power.

In the utility model, the light and thin imaging lens meets the following conditions: (V1+ V2)/(V5+ V6) ═ 0.97; fno < 1.8; wherein V1 is the maximum refractive index of the first lens element, V2 is the maximum refractive index of the second lens element, V5 is the maximum refractive index of the fifth lens element, V6 is the maximum refractive index of the sixth lens element, and Fno is the aperture value of the lightweight imaging lens. By the configuration mode, the lens volume can be effectively reduced, and the system aberration and astigmatism can be corrected, so that higher resolution can be obtained; controlling Fno to 1.8 or less enables a larger amount of light to be taken in, and thus enables a better imaging effect to be obtained in a dark environment.

Further, the light and thin imaging lens further satisfies the following conditions: -2 ≦ f6/(R61+ R62) < 0; wherein, R61 is the curvature radius of the object-side surface of the sixth lens element, R62 is the curvature radius of the image-side surface of the sixth lens element, and f6 is the focal length of the sixth lens element. By enabling the ratio of the focal length of the sixth lens to the sum of the object surface and the image surface of the sixth lens to meet the condition, the field curvature of each field of view can be balanced in a reasonable range, and the light and thin imaging lens has good imaging quality.

Further, the light and thin imaging lens further satisfies the following conditions: f/f2 is more than 0.5 and less than 1; wherein f is the focal length of the thin and light imaging lens, and f2 is the focal length of the second lens. The focal length of the second lens is restricted through the conditions, so that the lens has a wide-range view finding effect, and meanwhile, the assembly sensitivity of the lens can be reduced.

Further, the light and thin imaging lens further satisfies the following conditions: V3-V4| ═ 32.59; where V3 is the maximum refractive index of the third lens, and V4 is the maximum refractive index of the fourth lens. With the above relational expression, the ability of the mirror to correct aberrations can be improved.

Further, the light and thin imaging lens further satisfies the following conditions: f/f3 is more than 1 and less than 1.2; wherein f is the focal length of the light and thin imaging lens, and f3 is the focal length of the third lens element, which is favorable for reducing the difficulty of assembling the lens element when the above relation is satisfied.

Further, the light and thin imaging lens further meets the following conditions: -0.5 < R41/f < 0; wherein R41 is the curvature radius of the object-side surface of the fourth lens element, and f is the focal length of the thin and light imaging lens. By restricting the surface type of the fourth lens, the light and thin imaging lens has a good effect of correcting the aberration.

Further, the light and thin imaging lens further meets the following conditions: R11/SD11 is more than 1.5 and less than 2; wherein R11 is the radius of curvature of the object-side surface of the first lens, and SD11 is the maximum effective radius of the object-side surface of the first lens. By limiting the shape and aperture size of the first lens, the lens can be more miniaturized.

Further, the light and thin imaging lens further satisfies the following conditions: 1 < (R31+ R32)/f < 2; wherein, R31 is the curvature radius of the object side surface of the third lens, and R32 is the curvature radius of the image side surface of the third lens. The degree of beam deflection can be further reduced by specifying the surface type of the third lens, thereby achieving the purpose of reducing aberration.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

Example one

Referring to fig. 1 to 3, fig. 1 is a schematic diagram illustrating a thin and light imaging lens according to a first embodiment of the utility model, fig. 2 is a graph of astigmatism and distortion of the thin and light imaging lens according to the first embodiment of the utility model in sequence from left to right, and fig. 3 is a graph of spherical aberration of the thin and light imaging lens according to the first embodiment of the utility model.

The present invention provides a light and thin imaging lens, which includes, in order from an object side to an image side, first to sixth lenses E1 to E6, a stop STO disposed at the object side of the first lens E1, and surfaces between an object side surface S11 of the first lens E1 and an image side surface S12 of the sixth lens E6 are aspheric. The thin and light imaging lens further comprises an infrared filter E7, and the infrared filter E7 is arranged between the sixth lens E6 and the imaging surface S13.

The object-side surface S1 of the first lens element E1, the object-side surface S3 of the second lens element E2, the object-side surface S9 of the fifth lens element E5, and the object-side surface S11 of the sixth lens element E6 are convex at the paraxial region, and the image-side surface S2 of the first lens element E1, the image-side surface S4 of the second lens element E2, the image-side surface S10 of the fifth lens element E5, and the image-side surface S12 of the sixth lens element E6 are concave at the paraxial region; the object-side surface S5 and the image-side surface S6 of the third lens element E3 are convex at the paraxial region; the object-side surface S7 of the fourth lens element E4 is concave at the paraxial region, and the image-side surface S8 is convex at the paraxial region.

In addition, the first lens element E1, the second lens element E2, the third lens element E3 and the fifth lens element E5 have positive refractive power, and the fourth lens element E4 and the sixth lens element E6 have negative refractive power.

Please refer to the following tables 1-1, 1-2 and 1-3.

Table 1-1 shows detailed structural data of an embodiment, wherein the unit of the radius of curvature, the thickness and the focal length is mm, f is the focal length of the thin and light imaging lens, and Fno is the aperture value.

Table 1-2 shows aspheric coefficient data in the first embodiment, where k represents the cone coefficient in the aspheric curve equation, and a4, a6, A8, a10, a12, a14, and a16 represent the 4 th, 6 th, 8 th, 10 th, 12 th, 14 th, and 16 th order aspheric coefficients of each surface.

Tables 1-3 show the conditions satisfied by the thin and light imaging lens of the first embodiment.

In addition, the following tables in the embodiments correspond to the schematic diagrams and graphs of the embodiments, and the definitions of the data in the tables are the same as those in tables 1-1, tables 1-2 and tables 1-3 of the first embodiment, which will not be described herein again.

Example two

Referring to fig. 4 to 6, fig. 4 is a schematic view illustrating a light and thin imaging lens according to a second embodiment of the utility model, fig. 5 is a graph of astigmatism and distortion of the light and thin imaging lens according to the second embodiment of the utility model, and fig. 6 is a graph of spherical aberration of the light and thin imaging lens according to the second embodiment of the utility model.

The embodiment of the present invention provides a light and thin imaging lens, which includes, in order from an object side to an image side, first to sixth lenses E1 to E6, a stop STO is disposed at the object side of the first lens E1, and surfaces of the first lens E1 between an object side surface S11 and an image side surface S12 of the sixth lens E6 are aspheric. The thin and light imaging lens further comprises an infrared filter E7, and the infrared filter E7 is arranged between the sixth lens E6 and the imaging surface S13.

The object-side surface S1 of the first lens element E1, the object-side surface S3 of the second lens element E2, the object-side surface S9 of the fifth lens element E5, and the object-side surface S11 of the sixth lens element E6 are convex at the paraxial region, and the image-side surface S2 of the first lens element E1, the image-side surface S4 of the second lens element E2, the image-side surface S10 of the fifth lens element E5, and the image-side surface S12 of the sixth lens element E6 are concave at the paraxial region; the object-side surface S5 and the image-side surface S6 of the third lens element E3 are convex at the paraxial region; the object-side surface S7 of the fourth lens element E4 is concave at the paraxial region, and the image-side surface S8 is convex at the paraxial region.

In addition, the first lens element E1, the second lens element E2, the third lens element E3 and the fifth lens element E5 have positive refractive power, and the fourth lens element E4 and the sixth lens element E6 have negative refractive power.

Please refer to the following Table 2-1, Table 2-2 and Table 2-3.

EXAMPLE III

Referring to fig. 7 to 9, fig. 7 is a schematic diagram illustrating a light and thin imaging lens according to a third embodiment of the present disclosure, fig. 8 is a graph of astigmatism and distortion of the light and thin imaging lens according to the third embodiment of the present disclosure, in order from left to right, and fig. 9 is a graph of spherical aberration of the light and thin imaging lens according to the third embodiment of the present disclosure.

The embodiment of the present invention provides a light and thin imaging lens, which includes, in order from an object side to an image side, first to sixth lenses E1 to E6, a stop STO is disposed at the object side of the first lens E1, and surfaces of the first lens E1 between an object side surface S11 and an image side surface S12 of the sixth lens E6 are aspheric. The thin and light imaging lens further comprises an infrared filter E7, and the infrared filter E7 is arranged between the sixth lens E6 and the imaging surface S13.

The object-side surface S1 of the first lens element E1, the object-side surface S3 of the second lens element E2, the object-side surface S9 of the fifth lens element E5, and the object-side surface S11 of the sixth lens element E6 are convex at the paraxial region, and the image-side surface S2 of the first lens element E1, the image-side surface S4 of the second lens element E2, the image-side surface S10 of the fifth lens element E5, and the image-side surface S12 of the sixth lens element E6 are concave at the paraxial region; the object-side surface S5 and the image-side surface S6 of the third lens element E3 are convex at the paraxial region; the object-side surface S7 of the fourth lens element E4 is concave at the paraxial region, and the image-side surface S8 is convex at the paraxial region.

In addition, the first lens element E1, the second lens element E2, the third lens element E3 and the fifth lens element E5 have positive refractive power, and the fourth lens element E4 and the sixth lens element E6 have negative refractive power.

Please refer to the following Table 3-1, Table 3-2 and Table 3-3.

Example four

Referring to fig. 10 to 12, fig. 10 is a schematic diagram illustrating a light and thin imaging lens according to a fourth embodiment of the utility model, fig. 11 is graphs of astigmatism and distortion of the light and thin imaging lens according to the fourth embodiment of the utility model in order from left to right, and fig. 12 is a graph of spherical aberration of the light and thin imaging lens according to the fourth embodiment of the utility model.

The embodiment of the present invention provides a light and thin imaging lens, which includes, in order from an object side to an image side, first to sixth lenses E1 to E6, a stop STO is disposed at the object side of the first lens E1, and surfaces of the first lens E1 between an object side surface S11 and an image side surface S12 of the sixth lens E6 are aspheric. The thin and light imaging lens further comprises an infrared filter E7, and the infrared filter E7 is arranged between the sixth lens E6 and the imaging surface S13.

The object-side surface S1 of the first lens element E1, the object-side surface S3 of the second lens element E2, the object-side surface S9 of the fifth lens element E5, and the object-side surface S11 of the sixth lens element E6 are convex at the paraxial region, and the image-side surface S2 of the first lens element E1, the image-side surface S4 of the second lens element E2, the image-side surface S10 of the fifth lens element E5, and the image-side surface S12 of the sixth lens element E6 are concave at the paraxial region; the object-side surface S5 and the image-side surface S6 of the third lens element E3 are convex at the paraxial region; the object-side surface S7 of the fourth lens element E4 is concave at the paraxial region, and the image-side surface S8 is convex at the paraxial region.

In addition, the first lens element E1, the second lens element E2, the third lens element E3 and the fifth lens element E5 have positive refractive power, and the fourth lens element E4 and the sixth lens element E6 have negative refractive power.

Please refer to the following Table 4-1, Table 4-2 and Table 4-3.

EXAMPLE five

Referring to fig. 13 to 15, fig. 13 is a schematic view illustrating a light and thin imaging lens according to a fifth embodiment of the present disclosure, fig. 14 is graphs of astigmatism and distortion of the light and thin imaging lens according to the fifth embodiment of the present disclosure, in order from left to right, and fig. 15 is a graph of spherical aberration of the light and thin imaging lens according to the fifth embodiment of the present disclosure.

The embodiment of the present invention provides a light and thin imaging lens, which includes, in order from an object side to an image side, first to sixth lenses E1 to E6, a stop STO is disposed at the object side of the first lens E1, and surfaces of the first lens E1 between an object side surface S11 and an image side surface S12 of the sixth lens E6 are aspheric. The thin and light imaging lens further comprises an infrared filter E7, and the infrared filter E7 is arranged between the sixth lens E6 and the imaging surface S13.

The object-side surface S1 of the first lens element E1, the object-side surface S3 of the second lens element E2, the object-side surface S9 of the fifth lens element E5, and the object-side surface S11 of the sixth lens element E6 are convex at the paraxial region, and the image-side surface S2 of the first lens element E1, the image-side surface S4 of the second lens element E2, the image-side surface S10 of the fifth lens element E5, and the image-side surface S12 of the sixth lens element E6 are concave at the paraxial region; the object-side surface S5 and the image-side surface S6 of the third lens element E3 are convex at the paraxial region; the object-side surface S7 of the fourth lens element E4 is concave at the paraxial region, and the image-side surface S8 is convex at the paraxial region.

In addition, the first lens element E1, the second lens element E2, the third lens element E3 and the fifth lens element E5 have positive refractive power, and the fourth lens element E4 and the sixth lens element E6 have negative refractive power.

Please refer to the following Table 5-1, Table 5-2 and Table 5-3.

EXAMPLE six

Referring to fig. 16 to 18, fig. 16 is a schematic diagram illustrating a thin and light imaging lens according to a sixth embodiment of the utility model, fig. 17 is graphs of astigmatism and distortion of the thin and light imaging lens according to the sixth embodiment of the utility model, and fig. 18 is a graph of spherical aberration of the thin and light imaging lens according to the sixth embodiment of the utility model.

The embodiment of the present invention provides a light and thin imaging lens, which includes, in order from an object side to an image side, first to sixth lenses E1 to E6, a stop STO is disposed at the object side of the first lens E1, and surfaces of the first lens E1 between an object side surface S11 and an image side surface S12 of the sixth lens E6 are aspheric. The thin and light imaging lens further comprises an infrared filter E7, and the infrared filter E7 is arranged between the sixth lens E6 and the imaging surface S13.

The object-side surface S1 of the first lens element E1, the object-side surface S3 of the second lens element E2, the object-side surface S9 of the fifth lens element E5, and the object-side surface S11 of the sixth lens element E6 are convex at the paraxial region, and the image-side surface S2 of the first lens element E1, the image-side surface S4 of the second lens element E2, the image-side surface S10 of the fifth lens element E5, and the image-side surface S12 of the sixth lens element E6 are concave at the paraxial region; the object-side surface S5 and the image-side surface S6 of the third lens element E3 are convex at the paraxial region; the object-side surface S7 of the fourth lens element E4 is concave at the paraxial region, and the image-side surface S8 is convex at the paraxial region.

In addition, the first lens element E1, the second lens element E2, the third lens element E3 and the fifth lens element E5 have positive refractive power, and the fourth lens element E4 and the sixth lens element E6 have negative refractive power.

Please refer to the following Table 6-1, Table 6-2 and Table 6-3.

EXAMPLE seven

Referring to fig. 19 to 21, fig. 19 is a schematic view illustrating a light and thin imaging lens according to a seventh embodiment of the utility model, fig. 20 is graphs of astigmatism and distortion of the light and thin imaging lens according to the seventh embodiment of the utility model in order from left to right, and fig. 21 is a graph of spherical aberration of the light and thin imaging lens according to the seventh embodiment of the utility model.

The embodiment of the present invention provides a light and thin imaging lens, which includes, in order from an object side to an image side, first to sixth lenses E1 to E6, a stop STO is disposed at the object side of the first lens E1, and surfaces of the first lens E1 between an object side surface S11 and an image side surface S12 of the sixth lens E6 are aspheric. The thin and light imaging lens further comprises an infrared filter E7, and the infrared filter E7 is arranged between the sixth lens E6 and the imaging surface S13.

The object-side surface S1 of the first lens element E1, the object-side surface S3 of the second lens element E2, the object-side surface S9 of the fifth lens element E5, and the object-side surface S11 of the sixth lens element E6 are convex at the paraxial region, and the image-side surface S2 of the first lens element E1, the image-side surface S4 of the second lens element E2, the image-side surface S10 of the fifth lens element E5, and the image-side surface S12 of the sixth lens element E6 are concave at the paraxial region; the object-side surface S5 and the image-side surface S6 of the third lens element E3 are convex at the paraxial region; the object-side surface S7 of the fourth lens element E4 is concave at the paraxial region, and the image-side surface S8 is convex at the paraxial region.

In addition, the first lens element E1, the second lens element E2, the third lens element E3 and the fifth lens element E5 have positive refractive power, and the fourth lens element E4 and the sixth lens element E6 have negative refractive power.

Please refer to the following Table 7-1, Table 7-2 and Table 7-3.

Example eight

An embodiment of the present invention provides a photographing apparatus, including the light and thin imaging lens according to any one of the above embodiments.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A light and thin imaging lens is characterized in that a first lens, a second lens and a third lens are sequentially arranged from an object side to an image side, and all surfaces between an object side surface of the first lens and an image side surface of the third lens are aspheric surfaces;

the first lens element, the second lens element, the fifth lens element and the sixth lens element have convex object-side surfaces at paraxial regions thereof and concave image-side surfaces at paraxial regions thereof; the object side surface and the image side surface of the third lens are convex at a paraxial region; the object side surface of the fourth lens element is concave at a paraxial region, and the image side surface thereof is convex at a paraxial region; the first lens element, the second lens element, the third lens element and the fifth lens element have positive refractive power, and the fourth lens element and the sixth lens element have negative refractive power;

the light and thin imaging lens meets the following conditions:

(V1+V2)/(V5+V6)＝0.97；

Fno＜1.8；

wherein V1 is the maximum refractive index of the first lens element, V2 is the maximum refractive index of the second lens element, V5 is the maximum refractive index of the fifth lens element, V6 is the maximum refractive index of the sixth lens element, and Fno is the aperture value of the lightweight imaging lens.

2. The thin and light imaging lens according to claim 1, further satisfying the following condition:

-2≦f6/(R61+R62)＜0；

wherein, R61 is the curvature radius of the object-side surface of the sixth lens element, R62 is the curvature radius of the image-side surface of the sixth lens element, and f6 is the focal length of the sixth lens element.

3. The thin and light imaging lens according to claim 1, further satisfying the following condition:

0.5＜f/f2＜1；

wherein f is the focal length of the thin and light imaging lens, and f2 is the focal length of the second lens.

4. The thin and light imaging lens according to claim 1, further satisfying the following condition:

|V3-V4|＝32.59；

where V3 is the maximum refractive index of the third lens, and V4 is the maximum refractive index of the fourth lens.

5. The thin and light imaging lens according to claim 1, further satisfying the following condition:

1＜f/f3＜1.2；

wherein f is the focal length of the thin and light imaging lens, and f3 is the focal length of the third lens element.

6. The thin and light imaging lens according to claim 1, further satisfying the following condition:

-0.5＜R41/f＜0；

wherein R41 is the curvature radius of the object-side surface of the fourth lens element, and f is the focal length of the thin and light imaging lens.

7. The thin and light imaging lens according to claim 1, further satisfying the following condition:

1.5＜R11/SD11＜2；

wherein R11 is the radius of curvature of the object-side surface of the first lens, and SD11 is the maximum effective radius of the object-side surface of the first lens.

8. The thin and light imaging lens according to claim 1, further satisfying the following condition:

1＜(R31+R32)/f＜2；

wherein, R31 is the curvature radius of the object side surface of the third lens, and R32 is the curvature radius of the image side surface of the third lens.

9. The thin and light imaging lens of claim 1, wherein a stop is disposed on an object side of the first lens element.

10. A photographing device comprising the lightweight and thin imaging lens according to any one of claims 1 to 9.

Images