CN202533597U - Optical grating with light-absorbing grooves - Google Patents
Optical grating with light-absorbing grooves Download PDFInfo
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- CN202533597U CN202533597U CN2012200323837U CN201220032383U CN202533597U CN 202533597 U CN202533597 U CN 202533597U CN 2012200323837 U CN2012200323837 U CN 2012200323837U CN 201220032383 U CN201220032383 U CN 201220032383U CN 202533597 U CN202533597 U CN 202533597U
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- optical grating
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Abstract
An optical grating with light-absorbing grooves comprises the optical grating and the light-absorbing grooves. The plurality of light-absorbing grooves are connected with the box inner cavity wall of the optical grating, an optical source is projected onto the optical grating through a cuvette and an optical lens, main reflected light is reflected onto an optical signal receiver by the optical grating, at the same time stray light scattering all round is produced by the optical grating, and the light-absorbing grooves on the inner cavity wall of the optical grating absorb the stray light to avoid refraction of the stray light onto the optical grating. The optical grating with the light-absorbing grooves has the advantages that groove structure is designed on the inner cavity wall of the optical grating, anode oxidation matte finishing is carried out on surfaces of the grooves, the refraction of the light is reduced, and light-absorbing surfaces of the stray light are increased; and extinction effect of the stray light is quickly improved, and the optical grating is simple in structure and low in cost.
Description
Technical field
The utility model relates to a kind of grating, relates in particular to a kind of grating with the extinction groove.
Background technology
In the Biochemical Analyzer, adopt the Halogen lamp LED structure, the light intensity of infrared waves is higher than the light intensity of ultraviolet light wave far away; Usually surpass the 3-4 one magnitude; In order to reduce system noise, need in structure, carry out delustring and handle, usual way is blackout, spray extinction lacquer etc.; But these methods still can not be eliminated parasitic light as much as possible, therefore design delustring groove structure.
Summary of the invention
The purpose of the utility model provides a kind of grating with the extinction groove, and it makes full use of scattering principle, and owing to reflecting the scattered light that forms, the method through repeatedly reflecting in the delustring groove realizes the absorption as far as possible and the elimination of unnecessary luminous energy with most of.
The utility model realizes that like this it comprises grating, extinction groove, it is characterized in that on the cabinets cavity wall of grating, connecting some extinction grooves.Light source sees through cuvette and lens projects to grating, and grating reflexes to principal reflection light on the optical signal receiver, and grating produces parasitic light scattering all around simultaneously, and the extinction groove on the grating internal chamber wall absorbs parasitic light, does not allow parasitic light to be refracted on the grating again.The principle of work of the utility model: aluminium is through after the Precision Machining, and the surface is very smooth, again through blackout; The roughness on aluminium surface is still not high, and the aluminium blackout is not fine to infrared extinction effect, and 80% absorption is arranged usually; With respect to the infrared light of 3-4 one magnitude, through the scattering more than 4 times, energy is near ultraviolet; Reflection about 8 times could be near about 0.1% of ultraviolet light, and this noise is not to be allowed under 3 the situation in the OD value.Most of delustring lacquer designs for visible light, neither be fine to infrared extinction effect, and therefore need design and use trench structure; After parasitic light gets into trench structure; Cause the same effect in black hole, spuious luminous energy is repeatedly reflection in groove, so luminous energy can be consumed rapidly.
The technique effect of the utility model is on the grating internal chamber wall, to design trench structure, and carries out the inferior optical processing of anodic oxidation at rooved face, reduces the refraction of light, increases the absorption surface of parasitic light; Improve the extinction effect of parasitic light rapidly, system OD value improves rapidly, and is simple in structure, with low cost.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model.
Light source 2, cuvette 3, photoscope 4, parasitic light 5, grating 6, extinction groove 7, light signal receiving in the drawings, 1.
Embodiment
As shown in Figure 1, the utility model comprises grating 5, extinction groove 6, it is characterized in that on the cabinets cavity wall of grating 5, connecting some extinction grooves 6.Light source 1 sees through cuvette 2 and projects on the grating with photoscope 3; Grating reflexes to principal reflection light on the optical signal receiver 7; Grating produces parasitic light 4 scatterings all around simultaneously, and the extinction groove 6 on the grating internal chamber wall absorbs parasitic light, does not allow parasitic light to be refracted on the grating again.The principle of work of the utility model: aluminium is through after the Precision Machining, and the surface is very smooth, again through blackout; The roughness on aluminium surface is still not high, and the aluminium blackout is not fine to infrared extinction effect, and 80% absorption is arranged usually; With respect to the infrared light of 3-4 one magnitude, through the scattering more than 4 times, energy is near ultraviolet; Reflection about 8 times could be near about 0.1% of ultraviolet light, and this noise is not to be allowed under 3 the situation in the OD value.Most of delustring lacquer designs for visible light, neither be fine to infrared extinction effect, and therefore need design and use trench structure; After parasitic light gets into trench structure; Cause the same effect in black hole, spuious luminous energy is repeatedly reflection in groove, so luminous energy can be consumed rapidly.
Claims (1)
1. grating with the extinction groove, it comprises grating, extinction groove, it is characterized in that on the cabinets cavity wall of grating, connecting some extinction grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200323837U CN202533597U (en) | 2012-02-02 | 2012-02-02 | Optical grating with light-absorbing grooves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200323837U CN202533597U (en) | 2012-02-02 | 2012-02-02 | Optical grating with light-absorbing grooves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202533597U true CN202533597U (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200323837U Expired - Lifetime CN202533597U (en) | 2012-02-02 | 2012-02-02 | Optical grating with light-absorbing grooves |
Country Status (1)
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| CN (1) | CN202533597U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487144A (en) * | 2013-08-29 | 2014-01-01 | 中国科学院长春光学精密机械与物理研究所 | Double-grating beam splitting system packaging structure stable in stray light eliminating ability |
| CN108375562A (en) * | 2018-03-14 | 2018-08-07 | 北京普立泰科仪器有限公司 | A kind of mercury detector of high measurement accuracy |
| CN109158771A (en) * | 2018-09-30 | 2019-01-08 | 广州新可激光设备有限公司 | A kind of ultrahigh speed laser cutting head and its application method |
| CN109158772A (en) * | 2018-09-30 | 2019-01-08 | 广州新可激光设备有限公司 | A kind of high-rate laser diced system and its cutting method based on multidimensional distribution control |
| CN109946915A (en) * | 2019-04-19 | 2019-06-28 | 成都银屏科技有限公司 | A kind of anti-light curtain |
-
2012
- 2012-02-02 CN CN2012200323837U patent/CN202533597U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487144A (en) * | 2013-08-29 | 2014-01-01 | 中国科学院长春光学精密机械与物理研究所 | Double-grating beam splitting system packaging structure stable in stray light eliminating ability |
| CN103487144B (en) * | 2013-08-29 | 2016-01-13 | 中国科学院长春光学精密机械与物理研究所 | The double grating beam splitting system encapsulating structure that eliminate stray light ability is stable |
| CN108375562A (en) * | 2018-03-14 | 2018-08-07 | 北京普立泰科仪器有限公司 | A kind of mercury detector of high measurement accuracy |
| CN109158771A (en) * | 2018-09-30 | 2019-01-08 | 广州新可激光设备有限公司 | A kind of ultrahigh speed laser cutting head and its application method |
| CN109158772A (en) * | 2018-09-30 | 2019-01-08 | 广州新可激光设备有限公司 | A kind of high-rate laser diced system and its cutting method based on multidimensional distribution control |
| CN109158771B (en) * | 2018-09-30 | 2021-06-11 | 广州新可激光设备有限公司 | Ultrahigh-speed laser cutting head and using method thereof |
| CN109946915A (en) * | 2019-04-19 | 2019-06-28 | 成都银屏科技有限公司 | A kind of anti-light curtain |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121114 |
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| CX01 | Expiry of patent term |