CN107688228A - 4mm focusing machine visual lens - Google Patents
4mm focusing machine visual lens Download PDFInfo
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- CN107688228A CN107688228A CN201711057878.9A CN201711057878A CN107688228A CN 107688228 A CN107688228 A CN 107688228A CN 201711057878 A CN201711057878 A CN 201711057878A CN 107688228 A CN107688228 A CN 107688228A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/177—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The present invention relates to machine visual lens technical field, more particularly to 4mm 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 tenth lens G10 successively by object space to image space, the focal length of optical system is f, and it meets relational expression between the focal length f1 of the first lens, the focal length f2 of the second lens and the 5th lens focal length f5：6<|f1/f|<7,4<|f2/f|<6,6<|f5/f|<7；It meets relational expression between focal length f8, the focal length f9 of the 9th lens and the focal length f10 of the tenth lens of the 8th lens：1<|f8/f|<2.5,2.5<|f9/f|<4,2.5<|f10/f|<4；First balsaming lens B1 focal length is fB1, and the second balsaming lens B2 focal length is fB2, and they meet relationship below：1.5<|fB1/fB2|<3.By the first lens G1, to the tenth lens G10 arrangement and between them, the range of condition of focal length realizes focal length in 4mm, when corresponding chip size is 2/3 "; its pixel value can reach 5 mega pixels, meet high-end product demand, while its clear aperature also can flexible modulation.
Description
Technical field
The present invention relates to machine visual lens technical field, and in particular to 4mm focusing machine visual lens.
Background technology
Machine vision is exactly to replace human eye with machine to measure and judge.NI Vision Builder for Automated Inspection refers to pass through machine vision
Product (i.e. image-pickup device, being divided to two kinds of CMOS and CCD) will be ingested target and be converted into picture signal, send special figure to
As processing system, according to the information such as pixel distribution and brightness, color, it is transformed into digitized signal；Picture system is to these signals
Various computings are carried out to extract clarification of objective, and then the device action at scene is controlled according to the result of differentiation.
In recent years, as the fast development of microelectronics industry, high-resolution, the NI Vision Builder for Automated Inspection of high processing rate are continuous
It is born, this proposes new requirement to matched optical lens.And for the machine visual lens of domestic existing 4mm focal lengths
For, when supporting camera chip size is 2/3 ", pixel does not reach 5,000,000, can not meet high-end product demand.
It would therefore be highly desirable to it is a kind of supporting camera chip size be 2/3 " when, the 4mm that pixel energy reaches 5,000,000 focuses machine
Device vision lenses.
The content of the invention
It is an object of the invention to：In view of the shortcomings of the prior art, a kind of focal length is provided in 4mm, corresponding chip chi
Very little when being 2/3 ", pixel energy reaches 5,000,000 4mm focusing machine visual lens.
To achieve the above object, the present invention adopts the following technical scheme that：
4mm focusing machine visual lens, including mechanical system and the optical system that is 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 bent moon structure, the 3rd lens G3 with positive light coke and bent moon structure, with negative power and concave-concave
4th lens G4 of structure, the 5th lens G5 with positive light coke and bent moon structure, with positive light coke and biconvex structure
It is 6th lens G6, the 7th lens G7 with negative power and double-concave structure, the with positive light coke and biconvex structure the 8th saturating
Mirror G8, the 9th lens G9 with positive light coke and biconvex structure, the tenth lens G10 with negative power and bent moon structure,
The 3rd lens G3 combines to form the first balsaming lens B1 with the 4th lens G4, the 6th lens G6 and the 7th lens G7 groups
The second balsaming lens B2 is shaped as, the focal length of the optical system is f, its focal length f1, Jiao of the second lens with the first lens
Meet relational expression between focal length f5 away from f2 and the 5th lens：6<|f1/f|<7,4<|f2/f|<6,6<|f5/f|<7；It is with the
Meet relational expression between focal length f8, the focal length f9 of the 9th lens and the focal length f10 of the tenth lens of eight lens：1<|f8/f|<
2.5,2.5<|f9/f|<4,2.5<|f10/f|<4；The focal length of the first balsaming lens B1 is fB1, second balsaming lens
B2 focal length is fB2, and they meet relationship below：1.5<|fB1/fB2|<3.
One kind as 4mm focusing machine visual lens of the present invention is improved, and the refractive index of the 3rd lens is
N3, Abbe number v3, it meets relational expression：1.75<n3<1.9；20<v3<30.
One kind as 4mm focusing machine visual lens of the present invention is improved, and the refractive index of the 4th lens is
N4, Abbe number v4, it meets relational expression：1.4<n4<1.55；75<v4<90.
One kind as 4mm focusing machine visual lens of the present invention is improved, and the refractive index of the 6th lens is
N6, Abbe number v6, it meets relational expression：1.45<n6<1.6；50<v6<65.
One kind as 4mm focusing machine visual lens of the present invention is improved, and the refractive index of the 7th lens is
N7, Abbe number v7, it meets relational expression：1.75<n7<1.9；25<v7<35.
One kind as 4mm focusing machine visual lens of the present invention is improved, the first lens G1 to described the
Ten lens G10 are glass spherical lens.
As 4mm focusing machine visual lens of the present invention one kind improve, the mechanical system include preceding trim ring,
Microscope base, sleeve, DE spacer rings, diaphragm trim ring, middle trim ring, GH spacer rings, HI spacer rings, rear trim ring, focusing ring, switching circle, fixed cylinder, tune
The ring of light, C interface and diaphragm, the preceding trim ring are socketed on one end of the microscope base, and the rear trim ring is socketed on the another of the microscope base
One end, the sleeve are arranged at the inside of the microscope base, and the DE spacer rings are arranged at the 4th lens G4 and described 5th saturating
Between mirror G5, the diaphragm is arranged between the 5th lens G5 and the 6th lens G6, and the diaphragm trim ring is next to
The diaphragm, medium pressure circle are arranged between the diaphragm and the 6th lens G6, and the GH spacer rings are arranged at described
Between seven lens G7 and the 8th lens G8, the HI spacer rings be arranged at the 8th lens G8 and the 9th lens G9 it
Between, the focusing ring is connected by the switching circle with the microscope base, and the fixing barrel casing is on the microscope base, the light modulation
For ring set in the fixed cylinder, the C interface is connected to the end of the fixed cylinder.
One kind as 4mm focusing machine visual lens of the present invention is improved, and the aperture of the diaphragm is circular hole, model
Enclose for 0.8mm~5.9mm；The aperture of the diaphragm is adjustable in the range of F2.0~F16.
The beneficial effects of the present invention are：The object distance range of the optical system of the present invention is 100mm~infinity, works as thing
During away from changing, the first lens G1 to the tenth lens G10 whole groups moves forward and backward as focusing group.Pass through the first lens G1 to
The ten lens G10 arrangement and range of condition of focal length realizes focal length in 4mm between them, corresponding chip size is 2/3 "
When, its pixel value can reach 5 mega pixels, meet high-end product demand, while its clear aperature also can flexible modulation.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the present invention, this hair
Bright exemplary embodiment and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of optical system in the present invention；
Fig. 3 is the index path of optical system in the present invention.
Fig. 4 is the MTF curve of the optical system of the present invention.
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 reach the technique effect.
In the description of the invention, it is to be understood that term " on ", " under ", "front", "rear", "left", "right", level "
Orientation or position relationship Deng instruction be based on orientation shown in the drawings or position relationship, be for only for ease of the description present invention and
Simplify description, rather than the device or element of instruction or hint meaning there must be specific orientation, with specific azimuth configuration
And operation, therefore be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；It can be machine
Tool connects or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be two members
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.
The present invention is described in further detail below in conjunction with accompanying drawing, but it is not as a limitation of the invention.
As shown in figures 1-4,4mm focusing machine visual lens, including mechanical system and the light that is 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 bent moon structure, the 3rd lens G3 with positive light coke and bent moon structure, with negative power
And the 4th lens G4 of double-concave structure, the 5th lens G5 with positive light coke and bent moon structure, with positive light coke and biconvex
6th lens G6 of structure, the 7th lens G7 with negative power and double-concave structure, with positive light coke and biconvex structure
It is 8th lens G8, the 9th lens G9 with positive light coke and biconvex structure, the with negative power and bent moon structure the tenth saturating
Mirror G10, the 3rd lens G3 are combined to form the first balsaming lens B1 with the 4th lens G4, and the 6th lens G6 and the 7th lens G7 are formed
Form the second balsaming lens B2, the focal length of optical system is f, its focal length f1 with the first lens, the second lens focal length f2 and
Meet relational expression between the focal length f5 of 5th lens：6<|f1/f|<7,4<|f2/f|<6,6<|f5/f|<7；It is with the 8th lens
Focal length f8, the focal length f9 of the 9th lens and the focal length f10 of the tenth lens between meet relational expression：1<|f8/f|<2.5,2.5<|
f9/f|<4,2.5<|f10/f|<4；First balsaming lens B1 focal length is fB1, and the second balsaming lens B2 focal length is fB2, it
Meet relationship below：1.5<|fB1/fB2|<3.By between arrangements of the first lens G1 to the tenth lens G10 and they
The range of condition of focal length realizes focal length in 4mm, and when corresponding chip size is 2/3 ", its pixel value can reach 5,000,000 pictures
Element, meet high-end product demand, while its clear aperature also can flexible modulation.In addition, it can be seen that this reality from MTF curve figure
The optical system resolution ratio for applying example reaches 145lp/mm, and when corresponding camera chip size is 2/3 ", its pixel is exactly 8.8 ×
6.6 × 4 × 145 × 145=4884528, about 5,000,000.
Preferably, the refractive index of the 3rd lens be n3, Abbe number v3, it meets relational expression：1.75<n3<1.9；20<v3
<30。
Preferably, the refractive index of the 4th lens be n4, Abbe number v4, it meets relational expression：1.4<n4<1.55；75<v4
<90。
Preferably, the refractive index of the 6th lens be n6, Abbe number v6, it meets relational expression：1.45<n6<1.6；50<v6
<65。
Preferably, the refractive index of the 7th lens be n7, Abbe number v7, it meets relational expression：1.75<n7<1.9；25<v7
<35。
Preferably, the first lens G1 to the tenth lens G10 is glass spherical lens, by domestic crown board, flint, weight fire
Stone, lanthanum crown board, lanthanum flint, heavy-lanthanide flint glass combination form.
Preferably, mechanical system include preceding trim ring 1, microscope base 2, sleeve 3, DE spacer rings 4, diaphragm trim ring 5, middle trim ring 6, GH every
Circle 7, HI spacer rings 8, rear trim ring 9, focusing ring 10, switching circle 11, fixed cylinder 12, light modulation ring 13, C interface 14 and diaphragm 15, preceding pressure
Circle 1 is socketed on one end of microscope base 2, and rear trim ring 9 is socketed on the other end of microscope base 2, and sleeve 3 is arranged at the inside of microscope base 2, DE spacer rings
4 are arranged between the 4th lens G4 and the 5th lens G5, and diaphragm 15 is arranged between the 5th lens G5 and the 6th lens G6, diaphragm
15 aperture is circular hole, and scope is 0.8mm~5.9mm, and the aperture of diaphragm 15 is adjustable in the range of F2.0~F16, diaphragm trim ring 5
Diaphragm 15 is next to, middle trim ring 6 is arranged between the lens G6 of diaphragm 15 and the 6th, and GH spacer rings 7 are arranged at the 7th lens G7 and
Between eight lens G8, HI spacer rings 8 are arranged between the 8th lens G8 and the 9th lens G9, and focusing ring 10 passes through circle 11 and the mirror of transferring
Seat 2 is connected, and fixed cylinder 12 is sheathed on microscope base 2, and light modulation ring 13 is sheathed in fixed cylinder 12, and C interface 14 is connected to fixed cylinder 12
End.
In use, when light is after the first lens G1 to the tenth lens G10, can be formed in the tenth lens G10 rear
The distance between image planes 20, the lens G10 of image planes 20 and the tenth can change between 6.456~6.634mm.When object distance infinity
When, the distance between lens G10 of image planes 20 and the tenth is 6.456mm；As object distance 2m, between the lens G10 of image planes 20 and the tenth
Distance be 6.463mm；As object distance 0.35m, the distance between lens G10 of image planes 20 and the tenth is 6.516mm；Work as object distance
During 0.1m, the distance between lens G10 of image planes 20 and the tenth is 6.634mm.
Some preferred embodiments of the present invention have shown and described in described above, but as previously described, it should be understood that this hair
It is bright to be not limited to form disclosed herein, the exclusion to other embodiment is not to be taken as, and available for various other
Combination, modification and environment, and can in the scope of the invention is set forth herein, by the technology of above-mentioned teaching or association area or
Knowledge is modified., then all should be and the change and change that those skilled in the art are carried out do not depart from the spirit and scope of the present invention
In the protection domain of appended claims of the present invention.
Claims (8)
1.4mm 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 bent moon structure, the 3rd lens G3 with positive light coke and bent moon structure, with negative light
4th lens G4 of focal power and double-concave structure, the 5th lens G5 with positive light coke and bent moon structure, with positive light coke and
6th lens G6 of biconvex structure, the 7th lens G7 with negative power and double-concave structure, with positive light coke and biconvex knot
8th lens G8 of structure, the 9th lens G9 with positive light coke and biconvex structure, with negative power and bent moon structure
Ten lens G10, the 3rd lens G3 combine to form the first balsaming lens B1 with the 4th lens G4, the 6th lens G6 and
Seven lens G7 form to form the second balsaming lens B2, and the focal length of the optical system is f, its focal length f1 with the first lens, the
Meet relational expression between the focal length f2 of two lens and the focal length f5 of the 5th lens：6<|f1/f|<7,4<|f2/f|<6,6<|f5/f|
<7；It meets relational expression between focal length f8, the focal length f9 of the 9th lens and the focal length f10 of the tenth lens of the 8th lens：1<|
f8/f|<2.5,2.5<|f9/f|<4,2.5<|f10/f|<4；The focal length of the first balsaming lens B1 is fB1, second glue
The focal length for closing lens B2 is fB2, and they meet relationship below：1.5<|fB1/fB2|<3.
2. 4mm focusing machine visual lens according to claim 1, it is characterised in that：The refractive index of 3rd lens
For n3, Abbe number v3, it meets relational expression：1.75<n3<1.9；20<v3<30.
3. 4mm focusing machine visual lens according to claim 1, it is characterised in that：The refractive index of 4th lens
For n4, Abbe number v4, it meets relational expression：1.4<n4<1.55；75<v4<90.
4. 4mm focusing machine visual lens according to claim 1, it is characterised in that：The refractive index of 6th lens
For n6, Abbe number v6, it meets relational expression：1.45<n6<1.6；50<v6<65.
5. 4mm focusing machine visual lens according to claim 1, it is characterised in that：The refractive index of 7th lens
For n7, Abbe number v7, it meets relational expression：1.75<n7<1.9；25<v7<35.
6. 4mm focusing machine visual lens according to claim 1, it is characterised in that：The first lens G1 is described in
Tenth lens G10 is glass spherical lens.
7. 4mm focusing machine visual lens according to claim 1, it is characterised in that：The mechanical system includes preceding press
Circle, microscope base, sleeve, DE spacer rings, diaphragm trim ring, middle trim ring, GH spacer rings, HI spacer rings, rear trim ring, focusing ring, switching are enclosed, are fixed
Cylinder, light modulation ring, C interface and diaphragm, the preceding trim ring are socketed on one end of the microscope base, and the rear trim ring is socketed on the microscope base
The other end, the sleeve is arranged at the inside of the microscope base, and the DE spacer rings are arranged at the 4th lens G4 and described
Between five lens G5, the diaphragm is arranged between the 5th lens G5 and the 6th lens G6, and the diaphragm trim ring is tight
The diaphragm is connected to, medium pressure circle is arranged between the diaphragm and the 6th lens G6, and the GH spacer rings are arranged at institute
State between the 7th lens G7 and the 8th lens G8, the HI spacer rings are arranged at the 8th lens G8 and the 9th lens
Between G9, the focusing ring is connected by the switching circle with the microscope base, and the fixing barrel casing is described on the microscope base
Ring set is dimmed in the fixed cylinder, the C interface is connected to the end of the fixed cylinder.
8. 4mm focusing machine visual lens according to claim 7, it is characterised in that：The aperture of the diaphragm is circular hole,
Scope is 0.8mm~5.9mm；The aperture of the diaphragm is adjustable in the range of F2.0~F16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711057878.9A CN107688228B (en) | 2017-11-01 | 2017-11-01 | 4mm fixed focus machine vision lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711057878.9A CN107688228B (en) | 2017-11-01 | 2017-11-01 | 4mm fixed focus machine vision lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107688228A true CN107688228A (en) | 2018-02-13 |
| CN107688228B CN107688228B (en) | 2023-10-03 |
Family
ID=61154018
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711057878.9A Active CN107688228B (en) | 2017-11-01 | 2017-11-01 | 4mm fixed focus machine vision lens |
Country Status (1)
| Country | Link |
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| CN (1) | CN107688228B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109116517A (en) * | 2018-10-19 | 2019-01-01 | 广东奥普特科技股份有限公司 | A kind of big target surface high-res line of high magnification sweeps machine visual lens |
| CN109283651A (en) * | 2018-12-12 | 2019-01-29 | 广东奥普特科技股份有限公司 | A kind of high-resolution machine visual lens structure small in size |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109116517A (en) * | 2018-10-19 | 2019-01-01 | 广东奥普特科技股份有限公司 | A kind of big target surface high-res line of high magnification sweeps machine visual lens |
| CN109116517B (en) * | 2018-10-19 | 2023-10-10 | 广东奥普特科技股份有限公司 | High-resolution linear scanning machine vision lens with high magnification and large target surface |
| CN109283651A (en) * | 2018-12-12 | 2019-01-29 | 广东奥普特科技股份有限公司 | A kind of high-resolution machine visual lens structure small in size |
| CN109283651B (en) * | 2018-12-12 | 2021-12-14 | 广东奥普特科技股份有限公司 | Small-size high-resolution machine vision lens structure |
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| Publication number | Publication date |
|---|---|
| CN107688228B (en) | 2023-10-03 |
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