CN209070199U - A kind of low distorted optical inspection is as system - Google Patents
A kind of low distorted optical inspection is as system Download PDFInfo
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- CN209070199U CN209070199U CN201821922619.8U CN201821922619U CN209070199U CN 209070199 U CN209070199 U CN 209070199U CN 201821922619 U CN201821922619 U CN 201821922619U CN 209070199 U CN209070199 U CN 209070199U
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Abstract
The utility model relates to a kind of low distorted optical inspections as system, the optics, which is examined, to be made of as system six sheet glass spheric glasses, along optics inspection as from left to right direction is disposed with preceding group of A, diaphragm C, organizes B afterwards system, it is described before group A include the meniscus shaped lens A2 that is negative of the biconvex lens A1 of positive light coke, focal power, focal power be positive meniscus shaped lens A3, it is described after group B include biconvex lens B3 that the meniscus lens B2 that is positive of the meniscus shaped lens B1 that is negative of focal power, focal power, focal power are positive.Optics inspection not only meets object space telecentric system requirement as system, and detection image can be made to keep identical enlargement ratio in certain object distance range, moreover it is possible to make that picture holding uniform luminance is imaged, meet image space telecentric system requirement.Minimum distortion value also ensures the extremely strong reducing power of its imaging.
Description
Technical field
The utility model relates to a kind of low distorted optical inspections as system.
Background technique
Instantly field of industrial manufacturing is quickly grown, and optical detection has become one of indispensable demand of artificial intelligence field,
More stringent requirements are proposed to Systems for optical inspection for the detection environment of miscellaneous complexity.There are many finder screen heads for existing market
In product testing.But these camera lenses are harsh to detection environmental requirement, should stablize constant temperature again, and most of camera lens
It is unable to satisfy and eliminates parallax, eliminates the functions such as distortion.This kind of camera lens is often unilateral telecentric lens, and cost is quite high, structure ruler
It is very little big, it is high to detection environmental requirement.
Utility model content
The purpose of this utility model is place against the above deficiency, provides a kind of simply low distorted optical inspection picture of structure
System.
The technical solution of the utility model is, a kind of low distorted optical inspection is as system, and the optics inspection is as system is by six
Glass spheric glass is constituted, along optics inspection as from left to right direction is disposed with preceding group of A, diaphragm C, organizes B afterwards system, before described
Group A includes the meniscus shaped lens that the meniscus shaped lens A2 that is negative of the biconvex lens A1 of positive light coke, focal power, focal power are positive
A3, it is described after group B include that the meniscus lens B2 that is positive of the meniscus shaped lens B1 that is negative of focal power, focal power, focal power are positive
Biconvex lens B3.
Further, the meniscus shaped lens A3 that the meniscus shaped lens A2 and focal power that the preceding group A focal power is negative are positive
Glue pellet is organized before constituting, and the meniscus shaped lens B1 that B focal power is negative is organized after described and the meniscus lens B2 that focal power is positive is constituted
After organize glue pellet.
Further, the focal power of the preceding group A is positive, and the rear focal power for organizing B is negative.
Further, set the focal length of optical system as f, biconvex lens A1, meniscus shaped lens A2, meniscus shaped lens A3,
Meniscus shaped lens B1, meniscus lens B2, biconvex lens B3 are respectively f1, f2, f3, f4, f5, f6；Wherein meet with focal length f following
Ratio: 0.01 < f1/f < 0.02；-0.018<f2/f<-0.016；0.013<f3/f<0.016；-0.012<f4/f<-0.01；
0.014<f5/f<0.017；0.011<f6/f<0.014.
Further, f1 and f2 must satisfy: 0.9 < f1/f2 < 1.2.
Further, the material that the biconvex lens A1 is used is crown board material, the material of the meniscus shaped lens A2 use
Material is flint material, and the material that the meniscus shaped lens A3 is used is crown board material, the material of the meniscus shaped lens B1 use
For flint material, the material that the meniscus lens B2 is used is crown board material, and the material that the biconvex lens B3 is used is crown board
Material.
Further, the air spacing between the biconvex lens A1 to meniscus shaped lens A2 is 0.1mm, and falcate is saturating
The air distance of air the spacing 46.9mm, diaphragm C to meniscus shaped lens B1 of mirror A3 to diaphragm C are 41.9mm, meniscus lens B2
Air distance to biconvex lens B3 is 0.1mm, and the air distance of biconvex lens B3 to image planes is 35.1mm.
Further, the air gap between the preceding group A and rear group B is 88.8mm.
Compared with prior art, the utility model has the following beneficial effects: optics inspection is as system is by six spherical glass
Composition, using double gauss structure, lens distortion and susceptibility can be effectively reduced, reduce manufacture when tolerance control brought by
This while, can guarantee the picture reducing power of its superelevation；Its construction profile is exquisite, and manufacturing cost is low；Not only meet object space telecentricity
Requirement, the problems such as while being able to satisfy the requirement of image space telecentricity, effectively solve picture colour cast, brightness irregularities.
Detailed description of the invention
The utility model patent is further illustrated with reference to the accompanying drawing.
Fig. 1 is that the optics of the utility model embodiment is examined as system schematic.
Fig. 2 is the optics inspection of the utility model embodiment as system passes letter figure.
Fig. 3 is that the optics of the utility model embodiment is examined as systematical distortion figure.
In figure: before A organize A, C diaphragm C, B after organize B, A1 biconvex lens A1, A2 meniscus shaped lens A2, A3 meniscus shaped lens A3,
B1 meniscus shaped lens B1, B2 meniscus lens B2, B3 biconvex lens B3.
Specific embodiment
The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
As shown in Figures 1 to 3, a kind of low distorted optical inspection is as system, and the optics inspection is as system is by six sheet glass spherical mirrors
Piece is constituted, along optics inspection as from left to right direction is disposed with preceding group of A, diaphragm C, organizes B afterwards system, it is described before group A include just
Meniscus shaped lens A3 that meniscus shaped lens A2 that the biconvex lens A1 of focal power, focal power are negative, focal power are positive, it is described after group
B includes the biconvex lens B3 that the meniscus lens B2 that is positive of the meniscus shaped lens B1 that is negative of focal power, focal power, focal power are positive.
In the present embodiment, the meniscus shaped lens A2 that the preceding group A focal power is negative and the falcate that focal power is positive are saturating
Mirror A3 organizes glue pellet before constituting, the meniscus shaped lens B1 that B focal power is negative and the meniscus lens B2 that focal power is positive are organized after described
Glue pellet is organized after composition.
In the present embodiment, the focal power of the preceding group A is positive, and the rear focal power for organizing B is negative.
In the present embodiment, the focal length of optical system is set as f, and biconvex lens A1, meniscus shaped lens A2, falcate are saturating
Mirror A3, meniscus shaped lens B1, meniscus lens B2, biconvex lens B3 are respectively f1, f2, f3, f4, f5, f6；It is wherein full with focal length f
It is enough lower ratio: 0.01 < f1/f < 0.02；-0.018<f2/f<-0.016；0.013<f3/f<0.016；-0.012<f4/f<-
0.01；0.014<f5/f<0.017；0.011<f6/f<0.014.
In the present embodiment, f1 and f2 must satisfy: 0.9 < f1/f2 < 1.2.
In the present embodiment, for crown board material, the meniscus shaped lens A2 is used the material that the biconvex lens A1 is used
Material be flint material, the material that the meniscus shaped lens A3 is used for crown board material, meniscus shaped lens B1 use
Material be flint material, the material that the meniscus lens B2 is used for crown board material, the material that the biconvex lens B3 is used for
Crown board material.
In the present embodiment, the air spacing between the biconvex lens A1 to meniscus shaped lens A2 is 0.1mm, bent moon
The air distance of air the spacing 46.9mm, diaphragm C to meniscus shaped lens B1 of shape lens A3 to diaphragm C are 41.9mm, and bent moon is saturating
The air distance of mirror B2 to biconvex lens B3 is 0.1mm, and the air distance of biconvex lens B3 to image planes is 35.1mm.
In the present embodiment, the air gap between the preceding group A and rear group B is 88.8mm.
A kind of low distorted optical inspection sequentially includes the following steps: light from left to right successively through double as the imaging method of system
It is imaged after convex lens A1, meniscus shaped lens A2, meniscus shaped lens A3, meniscus shaped lens B1, meniscus lens B2, biconvex lens B3.
In the present embodiment, following optical index has been reached by the optical system that above-mentioned lens set is constituted: optics inspection
As system working distance is 110mm, optical distortion≤- 0.005%, object space telecentricity≤0.02 °, image space telecentricity≤0.05 °, light
Coke L ' >=35.1mm after, optical system overall length are less than 146mm, and applicable chip size is 2/3 ".
In the present embodiment, the parameter of each eyeglass is as shown in the table:
In the present embodiment, as shown in Fig. 2, optics inspection as system in 60 lines to the transfer function values at place 0.5 or so, respectively
For a visual field mtf value close to diffraction limit, imaging level is high, and picture uniformity is good.
In the present embodiment, as shown in figure 3, optics inspection is as optical distortion remains close to 0 to system at absolute visual field, make be
System possesses very strong picture reducing power.
In conclusion a kind of low distorted optical inspection provided by the utility model is as system, system optics distortion close to 0,
Distortion degree can be effectively reduced, while object, image space bilateral reach telecentricity requirement, it can be in detection different object distances object
It keeps identical multiplying power to carry out image restoring simultaneously, is selected by focal power balance and material, effectively relax it and be applicable in ring
Border temperature requirement makes it still be able to maintain good inspection under certain harsh temperature environment as effect.
Above-listed preferred embodiment has been further described the purpose of this utility model, technical solution and advantage,
It should be understood that the above is only the preferred embodiment of the utility model only, it is not intended to limit the utility model, it is all
Within the spirit and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in practical
Within novel protection scope.
Claims (8)
1. a kind of low distorted optical inspection is as system, it is characterised in that: the optics inspection is as system is by six sheet glass spheric glass structures
At, along optics inspection as from left to right direction is disposed with preceding group of A, diaphragm C, organizes B afterwards system, it is described before group A include positive light focus
Meniscus shaped lens A3 that meniscus shaped lens A2 that the biconvex lens A1 of degree, focal power are negative, focal power are positive, it is described after organize B packet
Include the biconvex lens B3 that the meniscus lens B2, focal power that the meniscus shaped lens B1, focal power that focal power is negative be positive are positive.
2. low distorted optical inspection according to claim 1 is as system, it is characterised in that: group A focal power is negative before described
The meniscus shaped lens A3 that meniscus shaped lens A2 and focal power are positive organizes glue pellet before constituting, the rear group B focal power is negative curved
The meniscus lens B2 that moon-shaped lens B1 and focal power are positive organizes glue pellet after constituting.
3. low distorted optical inspection according to claim 1 is as system, it is characterised in that: the focal power of group A is positive before described,
The focal power for organizing B afterwards is negative.
4. low distorted optical inspection according to claim 1 is as system, it is characterised in that: set the focal length of optical system as
F, biconvex lens A1, meniscus shaped lens A2, meniscus shaped lens A3, meniscus shaped lens B1, meniscus lens B2, biconvex lens B3 points
It Wei not f1, f2, f3, f4, f5, f6；Wherein meet following ratio: 0.01 < f1/f < 0.02 with focal length f；-0.018<f2/f<-
0.016；0.013<f3/f<0.016；-0.012<f4/f<-0.01；0.014<f5/f<0.017；0.011<f6/f<0.014.
5. low distorted optical inspection according to claim 4 is as system, it is characterised in that: f1 and f2 must satisfy: 0.9 < f1/
f2<1.2。
6. low distorted optical inspection according to claim 1 is as system, it is characterised in that: the material that the biconvex lens A1 is used
Material is crown board material, and the material that the meniscus shaped lens A2 is used is flint material, the material of the meniscus shaped lens A3 use
For crown board material, the material that the meniscus shaped lens B1 is used is flint material, and the material that the meniscus lens B2 is used is crown
Board material, the material that the biconvex lens B3 is used is crown board material.
7. low distorted optical inspection according to claim 1 is as system, it is characterised in that: the biconvex lens A1 to bent moon
Air spacing between shape lens A2 is 0.1mm, and air the spacing 46.9mm, diaphragm C of meniscus shaped lens A3 to diaphragm C are to curved
The air distance of moon-shaped lens B1 is 41.9mm, and the air distance of meniscus lens B2 to biconvex lens B3 is 0.1mm, biconvex lens
The air distance of B3 to image planes is 35.1mm.
8. low distorted optical inspection according to claim 1 is as system, it is characterised in that: before described between group A and rear group B
The air gap is 88.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821922619.8U CN209070199U (en) | 2018-11-21 | 2018-11-21 | A kind of low distorted optical inspection is as system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821922619.8U CN209070199U (en) | 2018-11-21 | 2018-11-21 | A kind of low distorted optical inspection is as system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209070199U true CN209070199U (en) | 2019-07-05 |
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ID=67100047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821922619.8U Active CN209070199U (en) | 2018-11-21 | 2018-11-21 | A kind of low distorted optical inspection is as system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209070199U (en) |
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2018
- 2018-11-21 CN CN201821922619.8U patent/CN209070199U/en active Active
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