CN205992078U

CN205992078U - Imaging lens

Info

Publication number: CN205992078U
Application number: CN201620713964.5U
Authority: CN
Inventors: 黄俊裕; 杜宇
Original assignee: Chun-Yu Huang
Current assignee: Shenyang Zhenrui Optical Technology Co.,Ltd.
Priority date: 2016-07-08
Filing date: 2016-07-08
Publication date: 2017-03-01
Anticipated expiration: 2026-07-08

Abstract

This utility model provides a kind of imaging lens, including the first lens from Zoom Side to reduced side sequential, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens.Second lens and the 3rd lens form the first compound lenses, and the 4th lens and the 5th lens form the second compound lenses, and the 6th lens and the 7th lens form the 3rd compound lenses.This imaging lens has the advantages that size is little, image quality is good.

Description

Imaging lens

Technical field

This utility model is related to a kind of optical element, more particularly, to a kind of imaging lens.

Background technology

Image capture unit (such as camera) is mainly the shadow to capture thing side by imaging lens and Image Sensor Picture, wherein imaging lens may be used to focus on the light beam from thing side on Image Sensor, and Image Sensor in order to Sensing image, therefore image quality are often closely bound up with the performance of imaging lens and Image Sensor.

Good Image Sensor the second best in quality imaging lens of need to arranging in pairs or groups could fully represent the property of Image Sensor Energy.Good imaging lens typically need to have low distortion aberration (distortion aberration), high-res (resolution) the advantages of, and in design, the size for imaging lens and cost are also required to weigh.Therefore, how to exist The imaging lens with good image quality are designed, actually the one of designer is big under conditions of taking into account the factors such as size and cost A difficult problem.

Utility model content

The utility model proposes a kind of imaging lens, it has the advantages that, and size is little, low cost and image quality is good.

For reaching above-mentioned advantage, this utility model provides a kind of imaging lens, and it includes sequentially arranging from Zoom Side to reduced side First lens of row, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th are saturating Mirror.Second lens and the 3rd lens form the first compound lenses, and the 4th lens and the 5th lens form the second compound lenses, and the Six lens and the 7th lens form the 3rd compound lenses.

In this utility model one embodiment, the first above-mentioned lens have positive diopter (refractive power), Second lens have positive diopter, and the 3rd lens have negative diopter or positive diopter, and the 4th lens have negative diopter, and the 5th Lens have positive diopter, and the 6th lens have negative diopter, and the 7th lens have positive diopter, and the 8th lens have positive dioptric Degree.

In this utility model one embodiment, the first above-mentioned lens are biconvex lens or the curved month type being convex to Zoom Side Lens or planoconvex lenss.

In this utility model one embodiment, the surface towards Zoom Side of the second above-mentioned lens is convex surface, the 3rd The surface towards reduced side of lens is concave curved surface, and the composition surface of the second lens and the 3rd lens is plane or is convex to amplify Side or the curved surface of reduced side.

In this utility model one embodiment, the surface towards Zoom Side of the 4th above-mentioned lens is concave curved surface, the 5th The surface towards reduced side of lens is convex surface, and the composition surface of the 4th lens and the 5th lens is the song being convex to Zoom Side Face.

In this utility model one embodiment, the surface towards Zoom Side of the 6th above-mentioned lens is concave curved surface, the 7th The surface towards reduced side of lens is convex surface, and the composition surface of the 6th lens and the 7th lens is plane or is convex to amplify Side or the curved surface of reduced side.

In this utility model one embodiment, the 8th above-mentioned lens are biconvex lens (biconvex lens), curved month type Lens (meniscus shaped lens) or planoconvex lenss (plano-convex lens).

In this utility model one embodiment, above-mentioned imaging lens also include aperture diaphragm (aperture stop), join It is placed between the 3rd lens and the 4th lens.

In this utility model one embodiment, above-mentioned imaging lens also include the 9th lens, be configured at lower column position its One of：Between 5th lens and the 6th lens, between the first lens and Zoom Side, between the first lens and the second lens, Between seven lens and the 8th lens, between the 8th lens and reduced side, between the 3rd lens and aperture diaphragm, aperture diaphragm and Between four lens.

In this utility model one embodiment, the 9th above-mentioned lens configuration between the 5th lens and the 6th lens, and 9th lens are meniscus lens or the biconvex lens of tool positive diopter.

In this utility model one embodiment, when the 9th lens configuration is between the first lens and Zoom Side or the first lens When and the second lens between, the material of the 9th lens includes crown glass (crown glass), light crown glass or fluor crown；When 9th lens configuration when between the 7th lens and the 8th lens or between the 8th lens and reduced side, the material bag of the 9th lens Include lanthanide glass, heavy lanthanide glass or dense flint glass (dense flint glass)；When the 9th lens configuration is in the 5th lens When and the 6th lens between, the material of the 9th lens includes lanthanide glass or heavy lanthanide glass.

In this utility model one embodiment, the material of the first above-mentioned lens includes flint glass or dense flint glass； Second lens and the 3rd lens material of one of them includes crown glass, the second lens and wherein another material bag of the 3rd lens Include dense flint glass；4th lens and the 5th lens material of one of them includes flint glass, the 4th lens and the 5th lens Wherein another material includes crown glass；The material of the 6th lens and the 7th lens includes flint glass；The material of the 8th lens Including lanthanide glass, heavy lanthanide glass or dense flint glass.

In this utility model one embodiment, the full filed angle (full field of view) of above-mentioned imaging lens is situated between Between 10 degree to 50 degree.

In imaging lens of the present utility model, due to eight lens of minimum need, so the advantage of low cost can be had. And, form three compound lenses by wherein six-element lens, the total length of imaging lens can be made to be reduced.Therefore, this reality Can have good image quality with new imaging lens under conditions of taking into account cost and size.

Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model Art means, and being practiced according to the content of description, and in order to allow above and other purpose of the present utility model, feature Can become apparent with advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.

Brief description

Fig. 1 is a kind of schematic diagram of imaging lens of this utility model one embodiment.

Fig. 2A is the astigmatism of an embodiment and the curvature of field figure of the imaging lens of Fig. 1.

Fig. 2 B is the distortion figure of an embodiment of the imaging lens of Fig. 1.

Fig. 2 C is modulation transfer function (MTF) (the Modulation Transfer of an embodiment of the imaging lens of Fig. 1 Function, MTF) figure.

Fig. 3 is a kind of schematic diagram of imaging lens of another embodiment of this utility model.

Fig. 4 A is the astigmatism of an embodiment and the curvature of field figure of the imaging lens of Fig. 3.

Fig. 4 B is the distortion figure of an embodiment of the imaging lens of Fig. 3.

Fig. 4 C is the modulation transfer function (MTF) figure of an embodiment of the imaging lens of Fig. 3.

Fig. 5 is a kind of schematic diagram of imaging lens of another embodiment of this utility model.

Fig. 6 A is the astigmatism of an embodiment and the curvature of field figure of the imaging lens of Fig. 5.

Fig. 6 B is the distortion figure of an embodiment of the imaging lens of Fig. 5.

Fig. 6 C is the modulation transfer function (MTF) figure of an embodiment of the imaging lens of Fig. 5.

Fig. 7 is a kind of schematic diagram of imaging lens of another embodiment of this utility model.

Fig. 8 A is the astigmatism of an embodiment and the curvature of field figure of the imaging lens of Fig. 7.

Fig. 8 B is the distortion figure of an embodiment of the imaging lens of Fig. 7.

Fig. 8 C is the modulation transfer function (MTF) figure of an embodiment of the imaging lens of Fig. 7.

Fig. 9 is a kind of schematic diagram of imaging lens of another embodiment of this utility model.

Figure 10 A is the astigmatism of an embodiment and the curvature of field figure of the imaging lens of Fig. 9.

Figure 10 B is the distortion figure of an embodiment of the imaging lens of Fig. 9.

Figure 10 C is the modulation transfer function (MTF) figure of an embodiment of the imaging lens of Fig. 9.

Specific embodiment

The imaging lens of each embodiment of this utility model can have mid-focal length or middle long-focus, its angle of visual field e.g. between 5-40 degree, but be not limited.This imaging lens can be applicable to either statically or dynamically in image capture unit, including camera, photograph Camera, supervising device, machine vision device etc., but be not limited.For example, imaging lens also apply be applicable to projection arrangement In.Will be detailed below several embodiments of imaging lens of the present utility model.

Fig. 1 is a kind of schematic diagram of imaging lens of this utility model one embodiment.Refer to Fig. 1, this imaging lens 100 Can be as tight shot, it includes the first lens G1 from Zoom Side to reduced side sequential, the second lens G2, the 3rd lens G3, the 4th lens G4, the 5th lens G5, the 6th lens G6, the 7th lens G7 and the 8th lens G8.Second lens G2 and the 3rd Lens G3 composition the first compound lenses C1, the 4th lens G4 and the 5th lens G5 form the second compound lenses C2, and the 6th lens G6 and the 7th lens G7 forms the 3rd compound lenses C3.When imaging lens 100 are applied in image capture unit, it is arranged at contracting The element P of little side is, for example, the Image Sensor of image capture unit, and imaging lens 100 are in order to become the object of Zoom Side As in Image Sensor.When imaging lens 100 are applied in projection arrangement, the element P being arranged at reduced side is, for example, to throw The light valve (light valve) of image device, and imaging lens 100 are in order to project the image strip from light valve to positioned at amplification On the screen of side.

The first above-mentioned lens G1 for example has positive diopter, and the second lens G2 for example has positive diopter, the 3rd lens G3 for example has negative diopter, and the 4th lens G4 for example has negative diopter, and the 5th lens G5 for example has positive diopter, and the 6th Lens G6 for example has negative diopter, and the 7th lens G7 for example has positive diopter, and the 8th lens G8 for example has positive diopter.

First lens G1 is for example, convex to the meniscus lens of Zoom Side, that is, the table towards Zoom Side of the first lens G1 Face S1 is convex surface, and is concave curved surface towards the surface S2 of reduced side, but the first lens G1 is not limited to meniscus lens.Citing comes Say, the first lens G1 can also be planoconvex lenss or biconvex lens.Additionally, the material of the first lens G1 can be selected for thering is high refraction Rate and the material of high dispersion, such as flint glass or dense flint glass etc..

The surface S3 towards Zoom Side of the second lens G2 is, for example, convex surface, the table towards reduced side of the 3rd lens G3 Face S5 is, for example, concave curved surface, and the composition surface S4 of the second lens G2 and the 3rd lens G3 is, for example, plane.In other embodiments, Composition surface S4 can also be the curved surface being convex to Zoom Side or reduced side.Additionally, one of second lens G2 and the 3rd lens G3 Material for example include crown glass, wherein another material of the second lens G2 and the 3rd lens G3 for example includes dense flint glass. For example, the material of the second lens G2 is, for example, crown glass, and the material of the 3rd lens G3 is, for example, dense flint glass.Another In embodiment, the material of the second lens G2 is, for example, dense flint glass, and the material of the 3rd lens G3 is, for example, crown glass.

The surface S6 towards Zoom Side of the 4th lens G4 is, for example, concave curved surface, the table towards reduced side of the 5th lens G5 Face S8 is, for example, convex surface, and the composition surface S7 of the 4th lens G4 and the 5th lens G5 is for example, convex to the curved surface of Zoom Side.This Outward, the material of the 4th lens G4 and the 5th lens G5 can be selected for refractive index close to but the larger bi-material of abbe number, in order to Eliminate dispersion.Specifically, the 4th lens G4 and the 5th lens G5 material of one of them for example includes flint glass, and the 4th is saturating Wherein another material of mirror G4 and the 5th lens G5 for example includes crown glass.For example, the material of the 4th lens G4 is flint Glass, the material of the 5th lens G5 is crown glass.In another embodiment, the material of the 4th lens G4 is crown glass, and the 5th is saturating The material of mirror G5 is flint glass.

The surface S9 towards Zoom Side of the 6th lens G6 is, for example, concave curved surface, the table towards reduced side of the 7th lens G7 Face S11 is, for example, convex surface, and the composition surface S10 of the 6th lens G6 and the 7th lens G7 is for example, convex to the curved surface of Zoom Side. In other embodiments, composition surface S10 can also be plane or the curved surface being convex to reduced side.Additionally, in general, flint glass The refractive index of glass between 1.63-2.1, and the material of the 6th lens G6 and the 7th lens G7 can be selected for abbe number close to but folding Penetrate one group of larger flint glass of rate difference, in order to eliminate aberration.In one embodiment, the folding of the 6th lens G6 and the 7th lens G7 The absolute value penetrating the difference of rate is e.g. more than 0.15.

8th lens G8 is, for example, biconvex lens, that is, the surface S12 towards Zoom Side of the 8th lens G8 and towards contracting The surface S13 of little side is for example convex surface.In other embodiments, the 8th lens G8 can also be planoconvex lenss or curved month type Lens, its convex surface can be convex to Zoom Side or reduced side.The material of the 8th lens G8 e.g. selects high-index material, example As can be selected for lanthanide glass or the heavy lanthanide glass of low dispersion.In other embodiments, the material of the 8th lens G8 also can be selected for Dense flint glass.

The imaging lens 100 of the present embodiment for example also include aperture diaphragm SA, are configured at the 3rd lens G3 and the 4th lens Between G4.Additionally, the full filed angle of the imaging lens 100 of the present embodiment is, for example, between 10 degree to 50 degree, but not with this It is limited.In one embodiment, full filed angle may be designed between 10 degree to 15 degree.

The imaging lens of the present embodiment eight lens of 100 need, so the advantage of low cost can be had.And, by it Middle six-element lens forms three compound lenses, and the total length of imaging lens 100 can be made to be reduced.Therefore, the one-tenth of the present embodiment As camera lens 100 can have good image quality under conditions of taking into account cost and size.

Table one will enumerate an embodiment of each parameter of imaging lens 100.It is noted that listed data money in table one Material is not limited to this utility model, any person of ordinary skill in the field with reference to after this utility model, when can Suitable change is done to its parameter or setting, precisely because must belong in category of the present utility model.

Table one

In table one, indication spacing is air line distance on the optical axis 150 of imaging lens 100 for two adjacently situated surfaces.Citing comes Say, the spacing of surface S1, as surface S1 and air line distance on optical axis 150 for the surface S2, the spacing of surface S13 is surface S13 and air line distance on optical axis 150 for the element P.Radius of curvature be on the occasion of surface represent this surface towards amplifying lateral bend, bent Rate radius is the surface of negative value, represents this surface court and reduces lateral bend.

Fig. 2A is the astigmatism of an embodiment and the curvature of field figure of the imaging lens of Fig. 1, and Fig. 2 B is a reality of the imaging lens of Fig. 1 Apply the distortion figure of example, and Fig. 2 C is the modulation transfer function (MTF) figure of an embodiment of the imaging lens of Fig. 1.As Fig. 2A to Fig. 2 C institute Show, the imaging lens 100 of the present embodiment can have good image quality under conditions of taking into account cost and size.

Although the 3rd above-mentioned lens G3 is taking have negative diopter as a example, in another embodiment, also can be according to different Design requirement and by the 3rd lens design become there is positive diopter.Additionally, in other embodiments, imaging lens also can also include One or more pieces lens.For example, imaging lens may also include a piece of 9th lens (not shown), and the 9th lens are configured in One of lower column position：Between first lens G1 and Zoom Side, between the first lens G1 and the second lens G2, the 7th lens G7 And the 8th lens G8 between, between the 8th lens G8 and reduced side, between the 3rd lens G3 and aperture diaphragm SA, aperture diaphragm SA And the 4th lens G4 between, between the 5th lens G5 and the 6th lens G6.Hereinafter another cooperation schema is illustrated multiple different realities Apply example.

Fig. 3 is a kind of schematic diagram of imaging lens of another embodiment of this utility model.Refer to Fig. 3, the present embodiment Imaging lens 100a is similar to the imaging lens 100 of Fig. 1, is that imaging lens 100a also includes the 9th lens at Main Differences G9, is configured between the first lens G1 and the second lens G2.The 9th lens G9 of the present embodiment for example has positive diopter, but In another embodiment, the 9th lens G9 has negative diopter.Additionally, in another embodiment, the 9th lens G9 can configure Between the first lens G1 and Zoom Side.In addition, when the 9th lens G9 is configured between the first lens G1 and Zoom Side or configures When between the first lens G1 and the second lens G2, the material of the 9th lens G9 for example includes crown glass, light crown glass or fluorine crown Glass.

Table two will enumerate an embodiment of each parameter of imaging lens 100a.It is noted that listed data in table two Data is not limited to this utility model, any person of ordinary skill in the field with reference to after this utility model, when Suitable change can be done to its parameter or setting, precisely because must belong in category of the present utility model.

Table two

Fig. 4 A is the astigmatism of an embodiment and the curvature of field figure of the imaging lens of Fig. 3, and Fig. 4 B is a reality of the imaging lens of Fig. 3 Apply the distortion figure of example, and Fig. 4 C is the modulation transfer function (MTF) figure of an embodiment of the imaging lens of Fig. 3.As Fig. 4 A to Fig. 4 C institute Show, the imaging lens 100a of the present embodiment can have good image quality under conditions of taking into account cost and size.

Fig. 5 is a kind of schematic diagram of imaging lens of another embodiment of this utility model.Refer to Fig. 5, the present embodiment Imaging lens 100b is similar to the imaging lens 100 of Fig. 1, is that imaging lens 100b also includes the 9th lens at Main Differences G9, is configured between aperture diaphragm SA and the 3rd lens G3.The 9th lens G9 of the present embodiment for example has positive diopter.Another In one embodiment, the 9th lens G9 has negative diopter.Additionally, in another embodiment, the 9th lens G9 is configured in Between aperture diaphragm SA and the 4th lens G4.

Table three will enumerate an embodiment of each parameter of imaging lens 100b.It is noted that listed data in table three Data is not limited to this utility model, any person of ordinary skill in the field with reference to after this utility model, when Suitable change can be done to its parameter or setting, precisely because must belong in category of the present utility model.

Table three

Fig. 6 A is the astigmatism of an embodiment and the curvature of field figure of the imaging lens of Fig. 5, and Fig. 6 B is a reality of the imaging lens of Fig. 5 Apply the distortion figure of example, and Fig. 6 C is the modulation transfer function (MTF) figure of an embodiment of the imaging lens of Fig. 5.As Fig. 6 A to Fig. 6 C institute Show, the imaging lens 100b of the present embodiment can have good image quality under conditions of taking into account cost and size.

Fig. 7 is a kind of schematic diagram of imaging lens of another embodiment of this utility model.Refer to Fig. 7, the present embodiment Imaging lens 100c is similar to the imaging lens 100 of Fig. 1, is that imaging lens 100c also includes the 9th lens at Main Differences G9, is configured between the 8th lens G8 and reduced side.The 9th lens G9 of the present embodiment for example has positive diopter, but another In embodiment, the 9th lens G9 has negative diopter.Additionally, in another embodiment, the 9th lens G9 is configured in Between seven lens G7 and the 8th lens G8.When the 9th lens G9 is configured between the 7th lens G7 and the 8th lens G8 or is configured at When between the 8th lens G8 and reduced side, the material of the 9th lens G9 includes lanthanide glass, heavy lanthanide glass or dense flint glass.

Table four will enumerate an embodiment of each parameter of imaging lens 100c.It is noted that listed data in table four Data is not limited to this utility model, any person of ordinary skill in the field with reference to after this utility model, when Suitable change can be done to its parameter or setting, precisely because must belong in category of the present utility model.

Table four

Fig. 8 A is the astigmatism of an embodiment and the curvature of field figure of the imaging lens of Fig. 7, and Fig. 8 B is a reality of the imaging lens of Fig. 7 Apply the distortion figure of example, and Fig. 8 C is the modulation transfer function (MTF) figure of an embodiment of the imaging lens of Fig. 7.As Fig. 8 A to Fig. 8 C institute Show, the imaging lens 100c of the present embodiment can have good image quality under conditions of taking into account cost and size.

Fig. 9 is a kind of schematic diagram of imaging lens of another embodiment of this utility model.Refer to Fig. 9, the present embodiment Imaging lens 100d is similar to the imaging lens 100 of Fig. 1, is that imaging lens 100d also includes the 9th lens at Main Differences G9, is configured between the 5th lens G5 and the 6th lens G6, and this 9th lens G9 for example has positive diopter, and the 9th lens G9 can For meniscus lens or biconvex lens.The material of this 9th lens G9 includes lanthanide glass or heavy lanthanide glass, but not as Limit.

Table five will enumerate an embodiment of each parameter of imaging lens 100d.It is noted that listed data in table five Data is not limited to this utility model, any person of ordinary skill in the field with reference to after this utility model, when Suitable change can be done to its parameter or setting, precisely because must belong in category of the present utility model.

Table five

Figure 10 A is the astigmatism of an embodiment and the curvature of field figure of the imaging lens of Fig. 9, and Figure 10 B is the one of the imaging lens of Fig. 9 The distortion figure of embodiment, and Figure 10 C is the modulation transfer function (MTF) figure of an embodiment of the imaging lens of Fig. 9.If Figure 10 A is to figure Shown in 10C, the imaging lens 100d of the present embodiment can have good image quality under conditions of taking into account cost and size.

The above, be only preferred embodiment of the present utility model, not this utility model is made any formal Restriction although this utility model is disclosed above with preferred embodiment, but be not limited to this utility model, any ripe Know professional and technical personnel, in the range of without departing from technical solutions of the utility model, when available the disclosure above method and Technology contents make a little change or the Equivalent embodiments being modified to equivalent variations, as long as being without departing from this utility model technology The content of scheme, any simple modification above example made according to technical spirit of the present utility model, equivalent variations with Modify, all still fall within the range of technical solutions of the utility model.

Claims

1. a kind of imaging lens are it is characterised in that include the first lens from Zoom Side to reduced side sequential, second saturating Mirror, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens, wherein said second lens Form the first compound lenses with described 3rd lens, described 4th lens form the second compound lenses with described 5th lens, and Described 6th lens form the 3rd compound lenses with described 7th lens.

2. imaging lens as claimed in claim 1 are it is characterised in that described first lens have positive diopter, and described second Lens have positive diopter, and described 3rd lens have negative diopter or positive diopter, and described 4th lens have negative diopter, Described 5th lens have positive diopter, and described 6th lens have negative diopter, and described 7th lens have positive diopter, institute State the 8th lens and there is positive diopter.

3. imaging lens as claimed in claim 2 are it is characterised in that described first lens are biconvex lens or are convex to described The meniscus lens of Zoom Side or planoconvex lenss.

4. imaging lens as claimed in claim 2 are it is characterised in that the surface towards described Zoom Side of described second lens For convex surface, the surface towards described reduced side of described 3rd lens is concave curved surface, and described second lens and the described 3rd The composition surface of lens is plane or is convex to described Zoom Side or the curved surface of described reduced side.

5. imaging lens as claimed in claim 2 are it is characterised in that the surface towards described Zoom Side of described 4th lens For concave curved surface, the surface towards described reduced side of described 5th lens is convex surface, and described 4th lens and the described 5th The composition surface of lens is the curved surface being convex to described Zoom Side.

6. imaging lens as claimed in claim 2 are it is characterised in that the surface towards described Zoom Side of described 6th lens For concave curved surface, the surface towards described reduced side of described 7th lens is convex surface, and described 6th lens and the described 7th The composition surface of lens is plane or is convex to described Zoom Side or the curved surface of described reduced side.

7. imaging lens as claimed in claim 2 are it is characterised in that described 8th lens are biconvex lens, meniscus lens Or planoconvex lenss.

8. imaging lens as claimed in claim 1, it is characterised in that described imaging lens also include aperture diaphragm, are configured at Between described 3rd lens and described 4th lens.

9. imaging lens as claimed in claim 8, it is characterised in that described imaging lens also include the 9th lens, are configured at One of lower column position：Between described 5th lens and described 6th lens, between described first lens and described Zoom Side, Between described first lens and described second lens, between described 7th lens and described 8th lens, described 8th lens with Between described reduced side, between described 3rd lens and described aperture diaphragm, between described aperture diaphragm and described 4th lens.

10. imaging lens as claimed in claim 9 it is characterised in that described 9th lens configuration in described 5th lens with Between described 6th lens, and described 9th lens are meniscus lens or the biconvex lens of tool positive diopter.

11. imaging lens as claimed in claim 9 it is characterised in that：

When described 9th lens configuration is between described first lens and described Zoom Side or described first lens and described second When between lens, the material of described 9th lens includes crown glass, light crown glass or fluor crown；

When described 9th lens configuration is between described 7th lens and described 8th lens or described 8th lens and described contracting When between little side, the material of described 9th lens includes lanthanide glass, heavy lanthanide glass or dense flint glass；

When described 9th lens configuration is between described 5th lens and described 6th lens, the material bag of described 9th lens Include lanthanide glass or heavy lanthanide glass.

12. imaging lens as claimed in claim 1 it is characterised in that：

The material of described first lens includes flint glass or dense flint glass；

The described second lens and described 3rd lens material of one of them includes crown glass, described second lens and the described 3rd Wherein another material of lens includes dense flint glass；

The described 4th lens and described 5th lens material of one of them includes flint glass, described 4th lens and described the Wherein another material of five lens includes crown glass；

Described 6th lens include flint glass with the material of described 7th lens；

The material of described 8th lens includes lanthanide glass, heavy lanthanide glass or dense flint glass.

13. imaging lens as claimed in claim 1 it is characterised in that the full filed angle of described imaging lens between 10 degree extremely Between 50 degree.