CN209486396U - A kind of built-in coaxial illumination line scanning lens - Google Patents
A kind of built-in coaxial illumination line scanning lens Download PDFInfo
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- CN209486396U CN209486396U CN201920475093.1U CN201920475093U CN209486396U CN 209486396 U CN209486396 U CN 209486396U CN 201920475093 U CN201920475093 U CN 201920475093U CN 209486396 U CN209486396 U CN 209486396U
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- 238000005286 illumination Methods 0.000 title claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims abstract description 36
- 238000003384 imaging method Methods 0.000 claims description 7
- 230000004075 alteration Effects 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000003321 amplification Effects 0.000 abstract description 2
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a kind of built-in coaxials to illuminate line scanning lens, including the first lens set G1 being sequentially arranged along image path, iris diaphgram STO, second lens set G2 and image planes IMA, Amici prism BS is provided between the first lens set G1 and iris diaphgram STO, the light source input terminal of the light splitting optical path of the Amici prism BS is provided with illumination lens set G3, the utility model is not necessarily to be arranged in front of camera lens spectroscope to introduce external light source, but built-in coaxial illumination light in the optical path, amplification of the aberration of coaxial-illuminating light without going past lens, it ensure that the optical resolution of camera lens, to improve measurement accuracy.
Description
Technical field
The utility model relates to lines to sweep camera lens field, and especially a kind of built-in coaxial illuminates line scanning lens.
Background technique
Currently, automatic optics inspection (AOI) equipment has been widely used in printing checking, check scanning, electronic product
The fields such as manufacture, food sorting, transportation safety, to improve production efficiency and yields, and line sweeps camera lens and line clears off source is then
Core component on automated optical detection equipment, only illuminating effect are good, and camera lens accurately clearly obtains true determinand figure
Picture just can guarantee the progress of back-end image processing.
Existing line scanning lens clear off source usually using external coaxial line, this to be achieved in that in tested object plane and mirror
The spectroscope that 45 degree angle is added between head, since spectroscope is arranged in the front of camera lens, the error that spectroscope generates understand because
Camera lens and amplify, to generate biggish aberration, reduce resolution of lens, influence detection accuracy.
Utility model content
Aiming at the problems existing in the prior art, the purpose of this utility model is to provide a kind of built-in coaxial illuminating lines to sweep
Camera lens is retouched to solve the problems, such as that existing external coaxial line clears off source and generate aberration effects detection accuracy.
To solve the above problems, the utility model adopts the following technical scheme.
A kind of built-in coaxial illuminates line scanning lens, including the first lens set G1, variable being sequentially arranged along image path
Diaphragm STO, the second lens set G2 and image planes IMA, which is characterized in that set between the first lens set G1 and iris diaphgram STO
It is equipped with Amici prism BS, the light source input terminal of the light splitting optical path of the Amici prism BS is provided with illumination lens set G3.
The first lens set G1 includes being sequentially arranged along imaging image path as a further improvement of the utility model,
Biconvex spherical surface positive lens B1, cemented doublet B2, the cemented doublet B2 include the concave-concave being sequentially arranged along image path
Spherical surface negative lens L1 and convex-concave spherical surface positive lens L2, the second lens set G2 include the double gluings being sequentially arranged along image path
Lens B3, biconvex spherical surface positive lens B4, the cemented doublet B3 include that the concave-convex spherical surface being sequentially arranged along imaging optical path is born thoroughly
Mirror L3 and bumps spherical surface positive lens L4, the illumination lens set G3 include along Amici prism BS light splitting optical path be sequentially arranged it is recessed
Convex lens B5, slit diaphragm L5, cylindrical mirror B6 and LED light source B7.
The spacing of biconvex spherical surface positive lens B1 to the cemented doublet B2 are as a further improvement of the utility model,
2.00 ± 5%.
Cemented doublet B2 is to the airspace of Amici prism on optical axis as a further improvement of the utility model,
Distance is 1.0 ± 5%.
Distance of the Amici prism BS to iris diaphgram STO on optical axis as a further improvement of the utility model,
It is 1.0 ± 5%.
As a further improvement of the utility model, the iris diaphgram STO to cemented doublet B3 on optical axis away from
From being 11.86 ± 5%.
The cemented doublet B3 is to biconvex spherical surface positive lens B4 on optical axis as a further improvement of the utility model,
Distance be 1.0 ± 5%.
Point of the Amici prism BS to concave-convex lens B5 in Amici prism BS as a further improvement of the utility model,
The spacing of light optical path is 1.0 ± 5%.
The light that the cylindrical mirror B6 issues LED light source B7 as a further improvement of the utility model, is sub in refractive power
Noon line direction changes vergence, does not occur vergence change in axial meridian direction, and the slit diaphragm L5 is to passing through cylinder
The light angle of mirror B6 is selected, and the concave-convex lens B5 is used to compensate the focal power of lighting system.
The iris diaphgram STO is set as circular hole iris diaphgram as a further improvement of the utility model, and aperture exists
It is adjustable within the scope of F2.8 to F11.
The beneficial effects of the utility model
Compared with the prior art, utility model has the advantages that
The utility model by being provided with Amici prism BS between the first lens set G1 and iris diaphgram STO,
The light source input terminal of the light splitting optical path of the Amici prism BS is provided with illumination lens set G3, it is not necessary that light splitting is arranged in front of camera lens
Mirror is to introduce external light source, but built-in coaxial illumination light in the optical path, aberration the putting without going past lens of coaxial-illuminating light
Greatly, it ensure that the optical resolution of camera lens, to improve measurement accuracy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model,
Fig. 2 is the first lens set of the utility model structural schematic diagram,
Fig. 3 is the second lens set of the utility model schematic diagram,
Fig. 4 is that the utility model illuminates lens set schematic diagram,
Fig. 5 is the utility model imaging system light path schematic diagram,
Fig. 6 is the utility model axial direction meridian direction lighting system index path,
Fig. 7 is the utility model refractive power meridian direction lighting system index path,
Fig. 8 is the MTF curve figure of the utility model optical system,
Fig. 9 is the curvature of field figure of the utility model optical system,
Figure 10 is the distortion curve of the utility model optical system,
Figure 11 is the hot spot figure of the utility model lighting system.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe；Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment, based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Please refer to Fig. 1 to Figure 11, a kind of built-in coaxial illuminates line scanning lens, including be sequentially arranged along image path the
One lens set G1, iris diaphgram STO, the second lens set G2 and image planes IMA, the first lens set G1 and iris diaphgram STO it
Between be provided with Amici prism BS, the light source input terminal of the light splitting optical path of the Amici prism BS is provided with illumination lens set G3, this
Utility model will illuminate lens set G3 by Amici prism BS and introduce imaging system, eliminate aberration, be a kind of built-in coaxial illumination
Adjustable enlargement ratio line scanning lens, it is preferred that the Amici prism BS have 45 degree of light splitting surfaces.
Wherein, the first lens set G1 includes the biconvex spherical surface positive lens B1, double being sequentially arranged along imaging image path
Balsaming lens B2, the cemented doublet B2 include the concave-concave spherical surface negative lens L1 and convex-concave spherical surface being sequentially arranged along image path
Positive lens L2, the second lens set G2 include the cemented doublet B3 being sequentially arranged along image path, biconvex spherical surface positive lens
B4, the cemented doublet B3 include the concave-convex spherical surface negative lens L3 being sequentially arranged along imaging optical path and concave-convex spherical surface positive lens
L4, the illumination lens set G3 include along concave-convex lens B5, the slit diaphragm for dividing the light splitting optical path of Amici prism BS to be sequentially arranged
L5, cylindrical mirror B6 and LED light source B7.
Preferably, the spacing of the biconvex spherical surface positive lens B1 to cemented doublet B2 is 2.00 ± 5%, cemented doublet
B2 is 1.0 ± 5% to distance of the airspace of Amici prism on optical axis, and the Amici prism BS exists to iris diaphgram STO
Distance on optical axis is 1.0 ± 5%, the iris diaphgram STO to distance of the cemented doublet B3 on optical axis is 11.86 ±
5%, the cemented doublet B3 to distance of the biconvex spherical surface positive lens B4 on optical axis be 1.0 ± 5%, the Amici prism BS
It in the spacing of the light splitting optical path of Amici prism BS is 1.0 ± 5% to concave-convex lens B5, the distance of concave-convex lens B5 to slit L5 is
The spacing of 3.0 ± 5%, slit diaphragm L5 to cylindrical mirror B6 are 3.0 ± 5%, and the light-emitting surface distance of cylindrical mirror B6 to LED light source is
18.2 ± 5%.
The concave-convex lens B5 plays the role of compensating the focal power of illumination path, has negative power.
The cylindrical mirror B6 changes vergence in refractive power meridian direction to the light that LED light source B7 is issued, in axial son
Noon line direction does not occur vergence change, and cylindrical mirror B6 is positive cylindrical lens, is also possible to single cylindrical mirror and is also possible to glued column
Face mirror.
The slit L5 is selected by the light angle of cylinder B6.
The iris diaphgram STO is set as circular hole iris diaphgram, and aperture is adjustable within the scope of F2.8 to F11.
Following table is the relevant parameter of the utility model:
In the utility model, without spectroscope being arranged in front of camera lens to introduce external light source, but it is built-in in the optical path
Coaxial-illuminating light, the aberration of coaxial-illuminating light ensure that the optical resolution of camera lens without going past the amplification of lens, to improve
Measurement accuracy.
The preferable specific embodiment of the above, only the utility model；But the protection scope of the utility model is not
It is confined to this.Anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its improvement design is subject to equivalent substitution or change, should all cover within the protection scope of the present utility model.
Claims (10)
1. a kind of built-in coaxial illuminates line scanning lens, including be sequentially arranged along image path the first lens set G1, can darkening
Late STO, the second lens set G2 and image planes IMA, which is characterized in that be arranged between the first lens set G1 and iris diaphgram STO
There is Amici prism BS, the light source input terminal of the light splitting optical path of the Amici prism BS is provided with illumination lens set G3.
2. a kind of built-in coaxial according to claim 1 illuminates line scanning lens, it is characterised in that: first lens set
G1 includes biconvex spherical surface positive lens B1, the cemented doublet B2, the cemented doublet B2 being sequentially arranged along imaging image path
Including the concave-concave spherical surface negative lens L1 and convex-concave spherical surface positive lens L2 being sequentially arranged along image path, the second lens set G2 packet
Include the cemented doublet B3 being sequentially arranged along image path, biconvex spherical surface positive lens B4, the cemented doublet B3 include along at
The concave-convex spherical surface negative lens L3 and concave-convex spherical surface positive lens L4, the illumination lens set G3 being sequentially arranged as optical path include along light splitting
Concave-convex lens B5, slit diaphragm L5, cylindrical mirror B6 and the LED light source B7 that the light splitting optical path of prism BS is sequentially arranged.
3. a kind of built-in coaxial according to claim 2 illuminates line scanning lens, it is characterised in that: the biconvex spherical surface is just
The spacing of lens B1 to cemented doublet B2 is 2.00 ± 5%.
4. a kind of built-in coaxial according to claim 2 illuminates line scanning lens, it is characterised in that: cemented doublet B2 is arrived
Distance of the airspace of Amici prism on optical axis is 1.0 ± 5%.
5. a kind of built-in coaxial according to claim 2 illuminates line scanning lens, it is characterised in that: the Amici prism BS
It is 1.0 ± 5% to distance of the iris diaphgram STO on optical axis.
6. a kind of built-in coaxial according to claim 2 illuminates line scanning lens, it is characterised in that: the iris diaphgram
STO to distance of the cemented doublet B3 on optical axis be 11.86 ± 5%.
7. a kind of built-in coaxial according to claim 2 illuminates line scanning lens, it is characterised in that: the cemented doublet
B3 to distance of the biconvex spherical surface positive lens B4 on optical axis be 1.0 ± 5%.
8. a kind of built-in coaxial according to claim 2 illuminates line scanning lens, it is characterised in that: the Amici prism BS
To concave-convex lens B5 the light splitting optical path of Amici prism BS spacing be 1.0 ± 5%.
9. a kind of built-in coaxial according to claim 2 illuminates line scanning lens, it is characterised in that: B6 pairs of the cylindrical mirror
The light that LED light source B7 is issued changes vergence in refractive power meridian direction, does not occur vergence in axial meridian direction and changes
Become, the slit diaphragm L5 selects the light angle by cylindrical mirror B6, and the concave-convex lens B5 is for compensating illumination
The focal power of system.
10. a kind of built-in coaxial according to claim 2 illuminates line scanning lens, it is characterised in that: the iris diaphgram
STO is set as circular hole iris diaphgram, and aperture is adjustable within the scope of F2.8 to F11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920475093.1U CN209486396U (en) | 2019-04-10 | 2019-04-10 | A kind of built-in coaxial illumination line scanning lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920475093.1U CN209486396U (en) | 2019-04-10 | 2019-04-10 | A kind of built-in coaxial illumination line scanning lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209486396U true CN209486396U (en) | 2019-10-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920475093.1U Withdrawn - After Issue CN209486396U (en) | 2019-04-10 | 2019-04-10 | A kind of built-in coaxial illumination line scanning lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209486396U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109870802A (en) * | 2019-04-10 | 2019-06-11 | 珠海博明视觉科技有限公司 | A kind of built-in coaxial illumination line scanning lens |
-
2019
- 2019-04-10 CN CN201920475093.1U patent/CN209486396U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109870802A (en) * | 2019-04-10 | 2019-06-11 | 珠海博明视觉科技有限公司 | A kind of built-in coaxial illumination line scanning lens |
| CN109870802B (en) * | 2019-04-10 | 2024-02-20 | 珠海博明视觉科技有限公司 | Built-in coaxial illumination line scanning lens |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20191011 Effective date of abandoning: 20240220 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20191011 Effective date of abandoning: 20240220 |