CN207457594U - 4mm focusing machine visual lens - Google Patents
4mm focusing machine visual lens Download PDFInfo
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- CN207457594U CN207457594U CN201721439137.2U CN201721439137U CN207457594U CN 207457594 U CN207457594 U CN 207457594U CN 201721439137 U CN201721439137 U CN 201721439137U CN 207457594 U CN207457594 U CN 207457594U
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Abstract
The utility model discloses 4mm focusing machine visual lens, the optical system of the camera lens 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, it meets relational expression between the focal length f5 of the focal length f1 of the first lens, the focal length f2 of the second lens and 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 first balsaming lens B1 is fB1, and the focal length of the second balsaming lens B2 is fB2, they meet relationship below：1.5<|fB1/fB2|<3.Said structure meets 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 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 is divided to two kinds of CMOS and CCD) will be ingested target and be converted into picture signal, send dedicated 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, 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 4mm focal lengths
For, when mating camera chip size is 2/3 ", pixel is not achieved 5,000,000, can not meet high-end product demand.
It would therefore be highly desirable to it is a kind of mating camera chip size be 2/3 " when, pixel energy reaches 5,000,000 4mm fixed-focus machines
Device vision 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 4mm, corresponding core
When chip size is 2/3 ", pixel energy reaches 5,000,000 4mm focusing machine visual lens.
To achieve the above object, the utility model adopts the following technical solution：
4mm 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 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
6th lens G6, the 7th lens G7 with negative power and double-concave structure, the with positive light coke and biconvex structure the 8th are thoroughly
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
It is shaped as the second balsaming lens B2, the focal length of the optical system is f, its focal length f1, coke 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 be fB1, second balsaming lens
The focal length of B2 is fB2, they meet relationship below：1.5<|fB1/fB2|<3.
As a kind of improvement of 4mm focusing machine visual lens described in the utility model, the refraction of the 3rd lens
Rate is n3, Abbe number v3, meets relational expression：1.75<n3<1.9；20<v3<30.
As a kind of improvement of 4mm focusing machine visual lens described in the utility model, the refraction of the 4th lens
Rate is n4, Abbe number v4, meets relational expression：1.4<n4<1.55；75<v4<90.
As a kind of improvement of 4mm focusing machine visual lens described in the utility model, the refraction of the 6th lens
Rate is n6, Abbe number v6, meets relational expression：1.45<n6<1.6；50<v6<65.
As a kind of improvement of 4mm focusing machine visual lens described in the utility model, the refraction of the 7th lens
Rate is n7, Abbe number v7, meets relational expression：1.75<n7<1.9；25<v7<35.
As a kind of improvement of 4mm focusing machine visual lens described in the utility model, the first lens G1 to institute
It is glass spherical lens to state the tenth lens G10.
As a kind of improvement of 4mm focusing machine visual lens described in the utility model, before the mechanical system includes
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 enclose, 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
It states 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 arranged on the microscope base, described
It dims ring set to be arranged in the fixed cylinder, the C interface is connected to the end of the fixed cylinder.
As a kind of improvement of 4mm focusing machine visual lens described in the utility model, the aperture of the diaphragm is circle
Hole, scope are 0.8mm~5.9mm；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 100mm~
Infinity, when object distance changes, the first lens G1 to the tenth lens G10 whole groups is moved back and forth as focusing group.Pass through
To the arrangement of the tenth lens G10 and between them, the range of condition of focal length realizes focal length in 4mm, corresponding core to first lens G1
When chip size is 2/3 ", pixel value can reach 5 mega pixels, meet high-end product demand, while its clear aperature also may be used
Flexible modulation.
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 figures 1-4,4mm 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 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
8th lens G8, the 9th lens G9 with positive light coke and biconvex structure, the with negative power and bent moon structure the tenth are thoroughly
Mirror G10, the 3rd lens G3 combine 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, it with the focal length f1 of the first lens, the focal length f2 of the second lens 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；The focal length of first balsaming lens B1 is fB1, and the focal length of the second balsaming lens B2 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 ", pixel value can reach 5,000,000 pictures
Element meets 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 ", 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, meet relational expression：1.75<n3<1.9；20<v3
<30。
Preferably, the refractive index of the 4th lens be n4, Abbe number v4, meet relational expression：1.4<n4<1.55；75<v4
<90。
Preferably, the refractive index of the 6th lens be n6, Abbe number v6, meet relational expression：1.45<n6<1.6；50<v6
<65。
Preferably, the refractive index of the 7th lens be n7, Abbe number v7, meet 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 15 and the 6th lens G6 of diaphragm, 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 connects, 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 rear of the tenth lens G10
The distance between image planes 20,20 and the tenth lens G10 of image planes can change between 6.456~6.634mm.When object distance infinity
When, the distance between 20 and the tenth lens G10 of image planes is 6.456mm；As object distance 2m, between 20 and the tenth lens G10 of image planes
Distance be 6.463mm；As object distance 0.35m, the distance between 20 and the tenth lens G10 of image planes is 6.516mm；Work as object distance
During 0.1m, the distance between 20 and the tenth lens G10 of image planes is 6.634mm.
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)
1.4mm 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 be fB1, second glue
The focal length of lens B2 is closed as fB2, 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, meet 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, meet 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, meet 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, meet 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 pressure
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 enclose, 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
It states 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 arranged on the microscope base, described
It dims ring set to be arranged 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 |
|---|---|---|---|
| CN201721439137.2U CN207457594U (en) | 2017-11-01 | 2017-11-01 | 4mm focusing machine visual lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721439137.2U CN207457594U (en) | 2017-11-01 | 2017-11-01 | 4mm focusing machine visual lens |
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| CN207457594U true CN207457594U (en) | 2018-06-05 |
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ID=62252989
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|---|---|---|---|
| CN201721439137.2U Active CN207457594U (en) | 2017-11-01 | 2017-11-01 | 4mm focusing machine visual lens |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107688228A (en) * | 2017-11-01 | 2018-02-13 | 广东奥普特科技股份有限公司 | 4mm focusing machine visual lens |
| 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 |
-
2017
- 2017-11-01 CN CN201721439137.2U patent/CN207457594U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107688228A (en) * | 2017-11-01 | 2018-02-13 | 广东奥普特科技股份有限公司 | 4mm focusing machine visual lens |
| CN107688228B (en) * | 2017-11-01 | 2023-10-03 | 广东奥普特科技股份有限公司 | 4mm fixed focus machine vision lens |
| 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 |
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