CN207457590U - 6mm focusing machine visual lens - Google Patents
6mm focusing machine visual lens Download PDFInfo
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- CN207457590U CN207457590U CN201721439132.XU CN201721439132U CN207457590U CN 207457590 U CN207457590 U CN 207457590U CN 201721439132 U CN201721439132 U CN 201721439132U CN 207457590 U CN207457590 U CN 207457590U
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- lens
- focal length
- focusing
- machine visual
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Abstract
The utility model is related to machine visual lens technical fields, more particularly to 6mm focusing machine visual lens, including mechanical system and the optical system being installed on inside mechanical system, optical system includes the first lens G1 to the 8th lens G8 successively by object space to image space, the focal length of the optical system is f, it meets relational expression with the focal length f1 of the first lens and the focal length f2 of the second lens：2<|f1/f|<3,1.5<|f2/f|<2.5；It meets relational expression between the focal length f3 of the 3rd lens and the focal length f4 of the 4th lens：4<|f3/f|<5.5,2<|f4/f|<3.5；The focal length of balsaming lens B1 is fB1, its focal length with optical system meets relationship below for f：1.5<|fB1/f|<3.By the first lens G1, to the arrangement of the 8th lens G8 and between them, the range of condition of focal length realizes focal length in 6mm, when corresponding chip size is 1/2 "; its pixel value can reach 2,500,000 pixels, meet high-end product demand, while its clear aperature also can flexible modulation.
Description
Technical field
The utility model is related to machine visual lens technical fields, and in particular to 6mm focusing machine visual lens.
Background technology
Machine vision is exactly the system for replacing human eye with machine to measure and judge.Mainly pass through sighting device（That is work
Industry camera and optical lens）Target will be ingested and be converted into picture signal, and send signal processing system to, signal processing system
By the information such as pixel distribution in image and brightness, color, it is transformed into digital signal；Then image processing software believes these numbers
Number various computings are carried out to extract clarification of objective, and then measurement and judgement are made to being ingested target according to feature.
In recent years, with the fast development of microelectronics industry, high-resolution, the NI Vision Builder for Automated Inspection of high processing rate is continuous
It is born, this proposes matched optical lens new requirement.And for the machine visual lens of domestic existing 6mm focal lengths
For, when mating camera chip size is 1/2 ", pixel is not achieved 2,500,000, can not meet high-end product demand.
It would therefore be highly desirable to it is a kind of mating camera chip size be 1/2 " when, the 6mm that pixel energy reaches 2,500,000 determines
Burnt machine visual lens.
Utility model content
The purpose of this utility model is that：In view of the deficiencies of the prior art, a kind of focal length is provided in 6mm, corresponding core
When chip size is 1/2 ", pixel energy reaches 2,500,000 6mm focusing machine visual lens.
To achieve the above object, the utility model adopts the following technical solution：
6mm focusing machine visual lens, including mechanical system and the optical system being installed on inside the mechanical system, institute
State optical system is included the first lens G1 with negative power and bent moon structure by object space to image space, with negative power successively
And the second lens G2 of double-concave structure, the 3rd lens G3 with positive light coke and bent moon structure, with positive light coke and biconvex
4th lens G4 of structure, the 5th lens G5 with positive light coke and biconvex structure, with negative power and double-concave structure
6th lens G6, the 7th lens G7 with positive light coke and bent moon structure, the with positive light coke and biconvex structure the 8th are thoroughly
Mirror G8, the 5th lens G5 combine to form balsaming lens B1 with the 6th lens G6, and the focal length of the optical system is f, it with
The focal length f1 of first lens and the focal length f2 of the second lens meet relational expression：2<|f1/f|<3,1.5<|f2/f|<2.5；It is with the
Meet relational expression between the focal length f3 of three lens and the focal length f4 of the 4th lens：4<|f3/f|<5.5,2<|f4/f|<3.5；It is described
The focal length of balsaming lens B1 is fB1, its focal length with optical system meets relationship below for f：1.5<|fB1/f|<3。
A kind of improvement of 6mm focusing machine visual lens as the utility model, the first lens G1 to described
Seven lens G7 combine to form focusing group, and the focusing group has positive light coke, focal length F1, and the focal length of the 8th lens G8 is
F2 meets：0.5<|F1/F2|<1.5；Between the focusing group and the 8th lens G8 at intervals of d, meet：
0.5mm<d<5mm。
A kind of improvement of 6mm focusing machine visual lens as the utility model, the refractive index of the 5th lens are
N5, Abbe number v5, meet relational expression：1.40<n5<1.55 75<v5<90.
A kind of improvement of 6mm focusing machine visual lens as the utility model, the refractive index of the 6th lens are
N6, Abbe number v6, meet relational expression：1.65<n6<1.8,25<v6<35.
A kind of improvement of 6mm focusing machine visual lens as the utility model, the refractive index of the 7th lens are
N7, Abbe number v7, meet relational expression：1.70<n7<1.85 45<v7<60.
A kind of improvement of 6mm focusing machine visual lens as the utility model, the first lens G1 to described
Eight lens G8 are glass spherical lens.
A kind of improvement of 6mm focusing machine visual lens as the utility model, the mechanical system include preceding trim ring,
Preceding microscope base, sleeve, CD spacer rings, middle trim ring, FG spacer rings, rear trim ring, focusing ring, the first switching circle, the second switching circle, light modulation ring, C
Interface, rear microscope base and diaphragm, the preceding trim ring are socketed on one end of the preceding microscope base, and the sleeve is arranged at the preceding microscope base
Inside, the CD spacer rings are arranged between the 3rd lens G3 and the 4th lens G4, and the diaphragm is arranged at described
Between four lens G4 and the 5th lens G5, medium pressure circle is arranged between the diaphragm and the 5th lens G5, institute
It states FG spacer rings to be arranged between the 6th lens G6 and the 7th lens G7, the rear trim ring is arranged in the rear microscope base
Portion, the focusing ring are connected by the described first switching circle with the preceding microscope base, and the light modulation ring is enclosed by the described second switching
With the described first switching circle connection, the C interface is arranged on the rear microscope base.
As a kind of improvement of 6mm focusing machine visual lens described in the utility model, the aperture of the diaphragm is circle
Hole, scope are 0.65mm~4.7mm；The aperture of the diaphragm is adjustable in the range of F2.0~F16.
The beneficial effects of the utility model are：The object distance range of the optical system of the utility model for 0.1mm~
Infinity, when object distance changes, the 8th lens G8 is remained unchanged, and the first lens G1 to the 7th lens G7 whole groups is as tune
Coke group moves back and forth.By the first lens G1, to the arrangement of the 8th lens G8 and between them, the range of condition of focal length realizes coke
Away from 6mm, when corresponding chip size is 1/2 ", pixel value can reach 2,500,000 pixels, meet high-end product demand,
Its clear aperature also can flexible modulation simultaneously.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and forms one of the utility model
Point, the exemplary embodiment and its explanation of the utility model are not formed for explaining the utility model to the utility model
Improper restriction.In the accompanying drawings：
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the structure diagram of optical system in the utility model；
Fig. 3 is the index path of optical system in the utility model;
Fig. 4 is the MTF curve of the optical system of the utility model.
Specific embodiment
Some vocabulary has such as been used to censure specific components among specification and claim.Those skilled in the art should
It is understood that hardware manufacturer may call same component with different nouns.This specification and claims are not with name
The difference of title is used as the mode for distinguishing component, but is used as the criterion of differentiation with the difference of component functionally.Such as logical
The "comprising" of piece specification and claim mentioned in is an open language, therefore should be construed to " include but do not limit
In "." substantially " refer in acceptable error range, those skilled in the art can be described within a certain error range solution
Technical problem basically reaches the technique effect.
In the description of the utility model, it is to be understood that term " on ", " under ", "front", "rear", "left", "right",
The orientation or position relationship of the instructions such as level " are based on orientation shown in the drawings or position relationship, are for only for ease of description originally
Utility model must have specific orientation with the device or element for simplifying description rather than instruction or hint meaning, with specific
Azimuth configuration and operation, therefore it is not intended that limitation to the utility model.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the utility model.
The utility model is described in further detail below in conjunction with attached drawing, but not as the restriction to the utility model.
As shown in Fig. 1 ~ 4,6mm focusing machine visual lens, including mechanical system and the light being installed on inside mechanical system
System, optical system are included the first lens G1 with negative power and bent moon structure by object space to image space, with negative successively
Second lens G2 of focal power and double-concave structure, the 3rd lens G3 with positive light coke and bent moon structure, with positive light coke
And the 4th lens G4 of biconvex structure, the 5th lens G5 with positive light coke and biconvex structure, with negative power and concave-concave
6th lens G6 of structure, the 7th lens G7 with positive light coke and bent moon structure, with positive light coke and biconvex structure
8th lens G8, the first lens G1 to the 8th lens G8 are by domestic crown board, flint, dense flint, lanthanum crown board, lanthanum flint, weight lanthanum fire
Stone glass combination forms.5th lens G5 combines to form balsaming lens B1 with the 6th lens G6, and the focal length of optical system is f, it
Meet relational expression with the focal length f1 of the first lens and the focal length f2 of the second lens：2<|f1/f|<3,1.5<|f2/f|<2.5；It with
Meet relational expression between the focal length f3 of 3rd lens and the focal length f4 of the 4th lens：4<|f3/f|<5.5,2<|f4/f|<3.5；Glue
The focal length of lens B1 is closed as fB1, the focal length of it and optical system meets relationship below for f：1.5<|fB1/f|<3.This practicality
The object distance range of new optical system is 0.1mm~infinity, and when object distance changes, the 8th lens G8 is kept not
Become, the first lens G1 to the 7th lens G7 whole groups is moved back and forth as focusing group.It can be seen that and pass through from the MTF curve figure of Fig. 4
First lens G1 to the arrangement of the 8th lens G8 and between them the range of condition of focal length realize focal length for 6mm when, this implementation
The optical system resolution ratio of example reaches 145lp/mm.Then when corresponding camera chip size is 1/2 ", Pixel size is 3.45 μm
And when above, pixel value is 6.4*4.8*4*145*145=2583552, about 2,500,000 pixels.Meet high-end product demand,
Its clear aperature also can flexible modulation simultaneously.
Preferably, the first lens G1 combines to form focusing group to the 7th lens G7, and focusing group is with positive light coke, focal length
The focal length of F1, the 8th lens G8 are F2, are met：0.5<|F1/F2|<1.5；Between focusing group and the 8th lens G8 at intervals of
D meets：0.5mm<d<5mm.
Preferably, the refractive index of the 5th lens be n5, Abbe number v5, meet relational expression：1.40<n5<1.55 75<
v5<90。
Preferably, the refractive index of the 6th lens be n6, Abbe number v6, meet relational expression：1.65<n6<1.8,25<v6
<35。
Preferably, the refractive index of the 7th lens be n7, Abbe number v7, meet relational expression：1.70<n7<1.85 45<
v7<60。
Preferably, the first lens G1 to the 8th lens G8 is glass spherical lens.
Preferably, mechanical system includes preceding trim ring, preceding microscope base, sleeve, CD spacer rings, middle trim ring, FG spacer rings, rear trim ring, tune
Jiao Huan, the first switching circle, the second switching circle, light modulation ring, C interface, rear microscope base and diaphragm, the one of microscope base before preceding trim ring is socketed on
End, the inside of microscope base before sleeve is arranged at, CD spacer rings are arranged between the 3rd lens G3 and the 4th lens G4, and diaphragm is arranged at the
Between four lens G4 and the 5th lens G5, middle trim ring is arranged between diaphragm and the 5th lens G5, and FG spacer rings are arranged at the 6th thoroughly
Between mirror G6 and the 7th lens G7, rear trim ring is arranged inside rear microscope base, and focusing ring is connected by the first switching circle with preceding microscope base,
Ring is dimmed by the second switching circle and the first switching circle connection, C interface is arranged on rear microscope base.
Preferably, the aperture of diaphragm is circular hole, and scope is 0.65mm~4.7mm；The aperture of diaphragm is in F2.0~F16 scopes
It is interior adjustable.
In use, when light is after the first lens G1 to the 8th lens G8, picture can be formed in the rear of the 8th lens G8
Face 20, when object distance changes, the airspace of the 7th lens G7 to the second lens G8 change, i.e. and the first lens G1 ~
7th lens G7 is moved back and forth together, and other sizes of space do not change, and optic back focal is constant away from holding 7.44mm.Work as object
During away from infinity, the distance between the 7th lens G7 and the 8th lens G8 are 1.21mm；As object distance 3m, the 7th lens G7 and
The distance between eight lens G8 are 1.287mm；As object distance 0.25m, the distance between the 7th lens G7 and the 8th lens G8 is
2.104mm；As object distance 0.17m, the distance between the 7th lens G7 and the 8th lens G8 are 2.562mm；As object distance 0.1m,
The distance between 7th lens G7 and the 8th lens G8 is 3.35mm；As object distance 0.076m, the 7th lens G7 and the 8th lens
The distance between G8 is 4.031mm.
Several preferred embodiments of the utility model have shown and described in above description, but as previously described, it should be understood that
The utility model is not limited to form disclosed herein, is not to be taken as the exclusion to other embodiment, and can be used for
Various other combinations, modification and environment, and above-mentioned introduction or correlation can be passed through in utility model contemplated scope described herein
The technology or knowledge in field are modified.And changes and modifications made by those skilled in the art do not depart from the spirit of the utility model
And scope, then it all should be in the protection domain of the appended claims for the utility model.
Claims (8)
1.6mm focusing machine visual lens, it is characterised in that：Including mechanical system and the light being installed on inside the mechanical system
System, the optical system are included the first lens G1 with negative power and bent moon structure, tool by object space to image space successively
There are the second lens G2 of negative power and double-concave structure, the 3rd lens G3 with positive light coke and bent moon structure, with positive light
4th lens G4 of focal power and biconvex structure, the 5th lens G5 with positive light coke and biconvex structure, with negative power and
6th lens G6 of double-concave structure, the 7th lens G7 with positive light coke and bent moon structure, with positive light coke and biconvex knot
8th lens G8 of structure, the 5th lens G5 combine to form balsaming lens B1 with the 6th lens G6, the coke of the optical system
Away from for f, it meets relational expression with the focal length f1 of the first lens and the focal length f2 of the second lens：2<|f1/f|<3,1.5<|f2/f|<
2.5；It meets relational expression between the focal length f3 of the 3rd lens and the focal length f4 of the 4th lens：4<|f3/f|<5.5,2<|f4/f
|<3.5；The focal length of the balsaming lens B1 is fB1, its focal length with optical system meets relationship below for f：1.5<|fB1/
f|<3。
2. 6mm focusing machine visual lens according to claim 1, it is characterised in that：The first lens G1 is to described
7th lens G7 combines to form focusing group, and the focusing group has positive light coke, focal length F1, the focal length of the 8th lens G8
For F2, meet：0.5<|F1/F2|<1.5；Between the focusing group and the 8th lens G8 at intervals of d, meet：
0.5mm<d<5mm。
3. 6mm focusing machine visual lens according to claim 1, it is characterised in that：The refractive index of 5th lens
For n5, Abbe number v5, meet relational expression：1.40<n5<1.55 75<v5<90.
4. 6mm focusing machine visual lens according to claim 1, it is characterised in that：The refractive index of 6th lens
For n6, Abbe number v6, meet relational expression：1.65<n6<1.8,25<v6<35.
5. 6mm focusing machine visual lens according to claim 1, it is characterised in that：The refractive index of 7th lens
For n7, Abbe number v7, meet relational expression：1.70<n7<1.85 45<v7<60.
6. 6mm focusing machine visual lens according to claim 1, it is characterised in that：The first lens G1 is described in
8th lens G8 is glass spherical lens.
7. 6mm focusing machine visual lens according to claim 1, it is characterised in that：The mechanical system includes preceding pressure
Circle, preceding microscope base, sleeve, CD spacer rings, middle trim ring, FG spacer rings, rear trim ring, focusing ring, the first switching circle, the second switching circle, light modulation
Ring, C interface, rear microscope base and diaphragm, the preceding trim ring are socketed on one end of the preceding microscope base, and the sleeve is arranged at the preceding mirror
The inside of seat, the CD spacer rings are arranged between the 3rd lens G3 and the 4th lens G4, and the diaphragm is arranged at institute
State between the 4th lens G4 and the 5th lens G5, medium pressure circle be arranged at the diaphragm and the 5th lens G5 it
Between, the FG spacer rings are arranged between the 6th lens G6 and the 7th lens G7, it is described after trim ring be arranged at it is described after
Inside microscope base, the focusing ring is connected by the described first switching circle with the preceding microscope base, and the light modulation ring passes through described second
Switching, which is enclosed, to be arranged at the described first switching circle connection, the C interface on the rear microscope base.
8. 6mm focusing machine visual lens according to claim 7, it is characterised in that：The aperture of the diaphragm is circular hole,
Scope is 0.65mm~4.7mm；The aperture of the diaphragm is adjustable in the range of F2.0~F16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721439132.XU CN207457590U (en) | 2017-11-01 | 2017-11-01 | 6mm focusing machine visual lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721439132.XU CN207457590U (en) | 2017-11-01 | 2017-11-01 | 6mm focusing machine visual lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207457590U true CN207457590U (en) | 2018-06-05 |
Family
ID=62253005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721439132.XU Withdrawn - After Issue CN207457590U (en) | 2017-11-01 | 2017-11-01 | 6mm focusing machine visual lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207457590U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107688225A (en) * | 2017-11-01 | 2018-02-13 | 广东奥普特科技股份有限公司 | 6mm focusing machine visual lens |
-
2017
- 2017-11-01 CN CN201721439132.XU patent/CN207457590U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107688225A (en) * | 2017-11-01 | 2018-02-13 | 广东奥普特科技股份有限公司 | 6mm focusing machine visual lens |
| CN107688225B (en) * | 2017-11-01 | 2023-10-10 | 广东奥普特科技股份有限公司 | 6mm fixed focus machine vision lens |
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180605 Effective date of abandoning: 20231010 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180605 Effective date of abandoning: 20231010 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |