CN105891921A - Beam splitter prism device for generation of non-interference reference light - Google Patents
Beam splitter prism device for generation of non-interference reference light Download PDFInfo
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- CN105891921A CN105891921A CN201410758337.9A CN201410758337A CN105891921A CN 105891921 A CN105891921 A CN 105891921A CN 201410758337 A CN201410758337 A CN 201410758337A CN 105891921 A CN105891921 A CN 105891921A
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Abstract
The present invention discloses a beam splitter prism device for generation of non-interference reference light. The left side surface of the beam splitter prism is a plane of incidence, and the right side surface of the beam splitter prism is a detection surface, wherein there is a first inclined plane arranged between the upper side surface of the plane of incidence and the detection surface and there is a second inclined plane arranged between the lower side surface of the beam splitter prism and the plane of incidence; and a first included angle is arranged between the first inclined plane and the upper side surface of the beam splitter prism, and a second included angle is arranged between the second inclined plane and the plane of incidence. The beam splitter prism device for generation of non-interference reference light avoid the multiple reflection superposition of light beams outputted by a common beam splitters, and improve the stability o the light source power detection when the optical wavelength is changed caused by temperature changing.
Description
Technical field
Environmental monitoring field of the present invention, refers in particular to a kind of beam splitting prism attachment produced without interfering reference light.
Background technology
Particle concentration monitor is instrument indispensable in environmental monitoring, and this kind of monitor can provide quickly, reliably and accurately quantitatively soot emissions data to environment supervision department.Technology according to environmental administration requires HJ/T 75-2007, HJ/T 76-2007, for ensureing the accuracy of monitoring instrument itself, needs to calibrate instrument.Existing particle concentration monitor calibrating installation uses parallel spectroscope, during calibration, often produce interference, owing to the ambient temperature range of instrument work is big (-20 DEG C～+50 DEG C), laser wavelength with temperature changes and changes, if spectroscope produces interferes light, the stability of instrument detection is difficult to meet design requirement.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, a kind of multiple reflections superposition avoiding common parallel light splitting piece output beam is provided, and can be effectively improved because of variations in temperature cause optical wavelength to change time, light source power detection stability without interfere reference light beam splitting prism attachment.
The technical scheme that the present invention takes is as follows: a kind of Amici prism, the left surface of this Amici prism is the plane of incidence, and right flank is detection faces, wherein, it is provided with the first inclined-plane between upper side and the detection faces of Amici prism, between downside and the plane of incidence of Amici prism, is provided with the second inclined-plane；The first angle is formed between above-mentioned first inclined-plane and the upper side of Amici prism, the second angle is formed between second inclined-plane and the plane of incidence, incident beam is in the plane of incidence injects Amici prism, detection faces is injected after the plane of incidence reflects, calibration beam and detection light beam is formed respectively after testing after face reflection and refraction, calibration beam is vertically incident upon the second inclined-plane, and penetrates through the second inclined-plane.
Preferably, the angle of the first described angle is respectively 100-150 degree, and the angle of the second angle is 120-160 degree.
Preferably, described Amici prism is arranged at the laser beam emission port side of on-line continuous particle concentration detector, and the beam emissions mouth of the incident surface A alignment laser instrument of Amici prism；The bottom of Amici prism is provided with illuminator, the light beam without interference correction of Amici prism injection is injected in illuminator, and through the lens of mirror reflection to on-line continuous particle concentration detector, in lens enter the photodetector of on-line continuous particle concentration detector, in order to calibrate.
The beneficial effects of the present invention is:
The nothing that the Amici prism of the present invention is capable of light beam being divided into two bundles mutually orthogonal interferes light, thus avoid the multiple reflections superposition (interference) of common parallel light splitting piece output beam, can be effectively improved because of variations in temperature cause optical wavelength to change time, light source power detection stability.The self-checking device of the present invention is a kind of self-checking device to on-line continuous particle concentration monitor, low cost, can obtain stable optical signal, and pass to monitoring instrument as a standard reference value, can automatically control and periodically monitoring instrument be calibrated, easy to maintenance.
Accompanying drawing explanation
Fig. 1 is the light splitting schematic diagram of Amici prism of the present invention.
Fig. 2 is existing parallel spectroscopical light splitting schematic diagram.
Fig. 3 is the Amici prism detection schematic diagram data of 24 hours in Fig. 1.
Fig. 4 is the parallel spectroscope detection schematic diagram data of 24 hours in Fig. 2.
Fig. 5 is the structural representation of Amici prism of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figures 1 to 5, the technical scheme that the present invention takes is as follows: a kind of Amici prism, the left surface of this Amici prism is incident surface A, right flank is detection faces B, wherein, it is provided with the first inclined-plane D between upper side and detection faces B of Amici prism, between downside and the incident surface A of Amici prism, is provided with the second inclined-plane C；The first angle F is formed between above-mentioned first inclined-plane D and the upper side of Amici prism, the second angle E is formed between second inclined-plane C and incident surface A, incident beam, in incident surface A injects Amici prism, injects detection faces B after incident surface A reflects, and is formed respectively after testing after face B reflection and refraction
Calibration beam and detection light beam, calibration beam is vertically incident upon the second inclined-plane C, and penetrates through the second inclined-plane C.
The angle of the first angle F is respectively 100-150 degree, and the angle of the second angle E is 120-160 degree.
Amici prism is arranged at the laser beam emission port side of on-line continuous particle concentration detector, and the beam emissions mouth of the incident surface A alignment laser instrument of Amici prism；The bottom of Amici prism is provided with illuminator, the light beam without interference correction of Amici prism injection is injected in illuminator, and through the lens of mirror reflection to on-line continuous particle concentration detector, in lens enter the photodetector of on-line continuous particle concentration detector, in order to calibrate.
Further, a kind of self-checking device with Amici prism, including being arranged in mounting seat, laser instrument, Amici prism, light barrier, illuminator, lens and photodetector, the most above-mentioned laser instrument is arranged on the left part of mounting seat, Amici prism is arranged on the right side of laser instrument, and the beam emissions mouth of the incident surface A alignment laser instrument of Amici prism, and light barrier is arranged on the bottom of Amici prism；Above-mentioned illuminator is arranged on the lower left quarter of light barrier, and the calibration beam of Amici prism injection is injected in illuminator, and through mirror reflection to lens, in lens enter photodetector.Light barrier is connected in mounting seat by rotating shaft, and light barrier connects the motor of peripheral hardware, and motor drives light barrier to rotate around the shaft, in order to makes light barrier rotate to parallel position and blocks calibration beam, or the right side rotated to Amici prism and illuminator makes calibration beam pass through.Illuminator, lens and photodetector are arranged on fixing seat, and fixing seat is arranged in mounting seat, and are arranged on the bottom of Amici prism；Said lens is arranged on the left side of illuminator, and calibration beam enters in lens after mirror reflection；Above-mentioned photodetector is arranged on the left side of lens, and calibration beam, in lens incident light electric explorer, is calibrated.Mounting seat is fixed on calibrating installation support body, and calibrating installation support body is arranged on the right side of mounting seat.
Further, as in figure 2 it is shown, existing parallel spectroscopical operation principle: parallel light splitting piece is A face towards incident beam, injection detection light beam is B face.When the incident beam that Laser emission goes out, first incides light splitting eyeglass A face and produces two-beam: be reflected into calibration beam, is refracted as detecting light beam；
When detecting light beam directive B face, again producing two-beam, be refracted as calibration beam, reflection then creates the second detection light beam；When the second detection light beam incides A face, third time produces two-beam, and refraction light is calibration beam, and reflection light retroeflection, to B face, produces two-beam, so circulates for the 4th time, produce and interfere light.As it is shown in figure 1, the operation principle of Amici prism of the present invention: spectroscope is A face towards incident beam, and injection detection light beam is B face, when the incident beam that Laser emission goes out, incides light splitting eyeglass A face and produces two-beam: be reflected into calibration light, is refracted as detecting light beam；When detecting light beam directive B face, again producing two-beam, be refracted as detecting light beam, reflection then creates detection light beam, when it incides C face, because vertical with C face, no longer has reflection light, directly penetrate calibration beam, thus avoid interference light；Therefore, by the design of Amici prism avoid common parallel light splitting piece output beam multiple reflections superposition interfere, thus be effectively improved because of variations in temperature cause optical wavelength change time, light source power detect stability.Further, Amici prism of the present invention is applied to the instrument test data newly developed as shown in Figure 3, Fig. 4 is the parallel spectroscope detection schematic diagram data of 24 hours, and by contrasting two figures: 24 hours Amici prism data variation are 3 numbers, parallel light splitting piece then reaches number more than 100.
Embodiments of the invention simply introduce its detailed description of the invention, do not lie in and limit its protection domain.The technical staff of the industry may be made that some is revised under the inspiration of the present embodiment, therefore all equivalence changes done according to the scope of the claims of the present invention or modification, belong in scope of the patent claims of the present invention.
Claims (3)
1. the beam splitting prism attachment produced without interfering reference light, it is characterised in that: a left side for this Amici prism
Side is the plane of incidence (A), and right flank is detection faces (B), wherein, the upper side of Amici prism with
The first inclined-plane (D) it is provided with, between the downside of Amici prism and the plane of incidence (A) between detection faces (B)
It is provided with the second inclined-plane (C)；The is formed between above-mentioned first inclined-plane (D) and the upper side of Amici prism
One angle (F), forms the second angle (E), enters between the second inclined-plane (C) and the plane of incidence (A)
Irradiating light beam is injected in Amici prism through the plane of incidence (A), injects detection faces after the plane of incidence (A) reflects
(B), face (B) forms calibration beam and detection light beam, calibration respectively after reflecting and reflecting after testing
Beam orthogonal is incident upon the second inclined-plane (C), and penetrates through the second inclined-plane (C).
A kind of beam splitting prism attachment produced without interfering reference light the most according to claim 1, its feature
It is: the angle of described the first angle (F) is respectively 100-150 degree, the second angle (E)
Angle is 120-160 degree.
A kind of beam splitting prism attachment produced without interfering reference light the most according to claim 2, its feature
It is: described Amici prism is arranged at the laser beam of on-line continuous particle concentration detector and sends out
Loophole side, and the beam emissions mouth of the incident surface A alignment laser instrument of Amici prism；Amici prism
Bottom is provided with illuminator, and the light beam without interference correction of Amici prism injection is injected in illuminator, and through anti-
Light microscopic reflexes to the lens of on-line continuous particle concentration detector, enters on-line continuous granule through lens
In the photodetector of substrate concentration detector, in order to calibrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410758337.9A CN105891921B (en) | 2014-12-12 | 2014-12-12 | A kind of beam splitting prism attachment generated without interference reference light |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410758337.9A CN105891921B (en) | 2014-12-12 | 2014-12-12 | A kind of beam splitting prism attachment generated without interference reference light |
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| CN105891921A true CN105891921A (en) | 2016-08-24 |
| CN105891921B CN105891921B (en) | 2019-03-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927962A (en) * | 2018-09-20 | 2020-03-27 | 上海微电子装备（集团）股份有限公司 | Prism design method, self-reference interferometer and design method and alignment system thereof |
| CN112041726A (en) * | 2018-05-08 | 2020-12-04 | 京瓷株式会社 | Electromagnetic wave detection device and information acquisition system |
| CN112636153A (en) * | 2020-12-04 | 2021-04-09 | 武汉安扬激光技术有限责任公司 | Ultraviolet femtosecond laser |
| CN114077143A (en) * | 2021-10-29 | 2022-02-22 | 歌尔光学科技有限公司 | Projection device, control method of projection device and projection system |
Citations (4)
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| NL8400451A (en) * | 1984-02-10 | 1985-09-02 | Stichting Waterbouwkundig Lab | Optical device measuring particle concn. in liq. - has beam splitter providing reference beam for photodiode and measuring beam for optical fibre ending below liq. surface |
| CN2569131Y (en) * | 2002-09-28 | 2003-08-27 | 国家海洋技术中心 | Concentation measurer for sea algae and susponded matter |
| CN2606351Y (en) * | 2002-05-15 | 2004-03-10 | 朱彤 | Continuous smoke concentration determining laser emitter |
| CN103439232A (en) * | 2013-08-30 | 2013-12-11 | 合肥工业大学 | Obscuration type soot particle concentration measuring method and device thereof |
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2014
- 2014-12-12 CN CN201410758337.9A patent/CN105891921B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8400451A (en) * | 1984-02-10 | 1985-09-02 | Stichting Waterbouwkundig Lab | Optical device measuring particle concn. in liq. - has beam splitter providing reference beam for photodiode and measuring beam for optical fibre ending below liq. surface |
| CN2606351Y (en) * | 2002-05-15 | 2004-03-10 | 朱彤 | Continuous smoke concentration determining laser emitter |
| CN2569131Y (en) * | 2002-09-28 | 2003-08-27 | 国家海洋技术中心 | Concentation measurer for sea algae and susponded matter |
| CN103439232A (en) * | 2013-08-30 | 2013-12-11 | 合肥工业大学 | Obscuration type soot particle concentration measuring method and device thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112041726A (en) * | 2018-05-08 | 2020-12-04 | 京瓷株式会社 | Electromagnetic wave detection device and information acquisition system |
| CN110927962A (en) * | 2018-09-20 | 2020-03-27 | 上海微电子装备（集团）股份有限公司 | Prism design method, self-reference interferometer and design method and alignment system thereof |
| CN112636153A (en) * | 2020-12-04 | 2021-04-09 | 武汉安扬激光技术有限责任公司 | Ultraviolet femtosecond laser |
| CN112636153B (en) * | 2020-12-04 | 2021-11-05 | 武汉安扬激光技术股份有限公司 | Ultraviolet femtosecond laser |
| CN114077143A (en) * | 2021-10-29 | 2022-02-22 | 歌尔光学科技有限公司 | Projection device, control method of projection device and projection system |
| CN114077143B (en) * | 2021-10-29 | 2024-04-30 | 歌尔光学科技有限公司 | Projection device, control method of projection device and projection system |
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| CN105891921B (en) | 2019-03-01 |
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Address after: 2909, 25th Floor, Building A, No. 2 Zhongguancun South Street, Haidian District, Beijing, 100088 Patentee after: Anrongxin Technology (Beijing) Co.,Ltd. Address before: 100096 Baijun Hongye Office Building 344, Yuxin Garden, Xisanqi, Haidian District, Beijing Patentee before: ANRONX TECHNOLOGY (BEJING) CO.,LTD. |
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