CN201897660U - Device for realizing multi-optical path - Google Patents
Device for realizing multi-optical path Download PDFInfo
- Publication number
- CN201897660U CN201897660U CN2010206442116U CN201020644211U CN201897660U CN 201897660 U CN201897660 U CN 201897660U CN 2010206442116 U CN2010206442116 U CN 2010206442116U CN 201020644211 U CN201020644211 U CN 201020644211U CN 201897660 U CN201897660 U CN 201897660U
- Authority
- CN
- China
- Prior art keywords
- mirror
- reverberator
- angle mirror
- angle
- optical path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model relates to a device for realizing multi-optical path, which comprises a corner mirror and a retracing mirror set, wherein the retracing mirror set is arranged on an emergent light path of the corner mirror. The device provided by the utility model has simple structure and can be used for easily adjusting the optical path, increasing the efficient optical path and improving the detecting sensitivity.
Description
Technical field
The utility model belongs to optical technical field, relates to a kind of method and device of realizing many light paths.
Background technology
Spectral technique is an important means of obtaining the structure of matter and chemical composition, material element assay and research atomic energy level etc., has a wide range of applications in fields such as industrial and agricultural production, scientific research, environmental monitoring, Aero-Space remote sensing at present.
The appearance of interference spectroscope has overcome traditional color dispersion-type spectrometer (Amici prism, dispersing prism and diffraction grating etc.) shortcoming that capacity usage ratio is low, and time modulation type interference spectroscope has been inherited the advantage of conventional interference spectrometer, integrates series of advantages such as hyperchannel (Felleget advantage), high flux (Jacquinot advantage), wave number accuracy height (Connes advantage) and low noise, measuring speed be fast.It has expanded the infrared spectroscopic study field, and recent two decades is subjected to the extensive concern of countries in the world and has obtained fast development.
But traditional time modulation type interference spectroscope is a Michelson interferometer exists two subject matters: 1. generally need auxiliary optical path, complex structure; 2. poor stability, adaptive capacity to environment and antijamming capability are low.This is that index glass is a level crossing, if run-off the straight in motion process will have a strong impact on interference efficient, even can not produce interference because on the one hand in traditional Michelson linear pattern movable lens interferometer; It is also extremely strict to the requirement of index glass travel direction, so in the linear pattern movable lens interferometer auxiliary optical path need be set, promptly utilizes laser that index glass travel direction accuracy, velocity uniformity, displacement etc. are carried out real-time precise monitoring and correction.But this auxiliary optical path has increased the structural complexity of instrument and the difficulty of enforcement simultaneously.On the other hand, because to index glass easy motion and that requirement is rocked in inclination is very high at the uniform velocity, so interferometer requires to have the high-precision index glass drive system of a cover to the control of index glass.But in the practical project development process, realize that high-precision index glass linear drives and support system are still quite difficult.In addition, the index glass straight reciprocating motion is stronger to the processing technology dependence of tracks, though the laser auxiliary optical path has reduced external environment to a great extent as shaking or shake the influence to measurement effect, but this influence can only weaken and can not eliminate fully, cause system stability poor, reduced the ability and the antijamming capability of these type of spectrometer adaptation rugged surroundings.
Dynamic stability problem people at time modulation type interference spectroscope have proposed multiple solution route and scheme.For avoiding the problem of level crossing motion process medium dip, angle mirror in the interferometer is often substituted by the catoptron of other anti-inclinations, as dihedral angle mirror (solid rectangular prism, roof prism or hollow two corner cube mirrors), cube angle mirror (solid block prism or hollow three right-angle plane mirrors), opal mirror etc.If when above three kinds of reverberators are substituted the angle mirror of Michelson interferometer and horizontal glass respectively simultaneously,, all can run into the traversing problem of reverberator although all insensitive to tilting.Carli etc. make up a roof prism as angle mirror and another fixing roof prism, but angle mirror is all responsive to the inclination of traversing and a certain direction.Murty recognizes at first that if cube angle mirror and plane mirror are combined soon cube angle mirror, then can guarantee in cube angle mirror motion process inclination and traversing all insensitive as fixed mirror as angle mirror and with plane mirror.This cube corner mirror interferometer and other kinds cube corner mirror interferometer that Murty proposes were generally adopted in time interferometric modulator spectrometer afterwards, because the use of cube angle mirror makes the required calibration accuracy ratio of interferometer reduce by 1 to 2 order of magnitude when adopting level crossing, the light path of interferometer becomes 4 journeys by 2 journeys simultaneously, make the optical path difference of interferometer increase to original twice, correspondingly angle mirror moves same displacement and makes the spectral resolution of interferometer increase to twice.Thereby the spectrometer of the also big the type that developed on a large scale of this method.Because the complicacy of many light paths optical design, 4 times of journeys are considered to increase the reasonable limit of interferometer light path quantity but up to the present.Utilize single cube of angle mirror to be limited to and only realize double journey at the most, i.e. cube angle mirror displacement x, optical path difference changes 4x, this moment, spectral resolution was brought up to about 2 times of traditional Michelson interferometer, was equivalent to perhaps that Measuring Time and angle mirror displacement are reduced to about 1/2 under the condition that realizes the equal spectral resolution of traditional Michelson interferometer; Perhaps utilize two cube angle mirrors to only limit to realize four times of journeys, be angle mirror displacement x, optical path difference changes 8x, this moment, spectral resolution was brought up to about 4 times of traditional Michelson interferometer, was equivalent to perhaps that Measuring Time and angle mirror displacement are reduced to about 1/4 under the condition that realizes with the equal spectral resolution of traditional Michelson interferometer.The reducing of angle mirror displacement helps diagonal mirror and realizes accurate attitude and drive controlling, the increase of opposite displacement can correspondingly increase Measuring Time and displacement, the interferometer angle mirror drives and the design difficulty of support system thereby increase, and is strict more to the Structural Design Requirement and the technological requirement of guide rail.
Utilizing the angle mirror folded optical path to increase effective light path often appears in the interferometer, and in the Molecular Spectral Analysis field, in the experiment of traditional absorption spectrum, Raman spectrum and optoacoustic spectroscopy, particularly high-resolution spectra, people often adopt multiple optics long-range pond to survey the effective light path of light by sample to increase, to improve detection sensitivity.In absorption spectrum detects, for fixing absorbing medium, can allow and survey light and between the incident in absorption of sample pond and outgoing end face, do repeatedly to come and go to pass through absorbing medium, make light beam effectively absorb the geometrical length that light path is far longer than the absorption of sample pond, realize that many light paths absorb by the reality of sample.There are White type, matrix type and Herriott type in optics long-range pond commonly used.The characteristics in preceding two kinds of long-range ponds are that aperture angle is bigger, are applicable to ordinary light source and LASER Light Source, but used catoptron is more.The optical system in Herriott type long-range pond is made up of two concave mirrors, is characterized in simple in structure, and light path is regulated relatively easy, but aperture angle is less, is applicable to LASER Light Source.
The utility model content
The purpose of this utility model is to propose a kind of device that not only can be used as telecontrol equipment but also can be used as the many light paths of realization of stationary installation.
The technical solution adopted in the utility model is: a kind of device of realizing many light paths, and its special character is: comprise angle mirror and the mirror group of turning back; The described mirror group of turning back is arranged on the emitting light path of described angle mirror.
Above-mentioned angle mirror is a cube angle mirror.
The above-mentioned mirror group of turning back comprises a plurality of reverberators.
Above-mentioned reverberator comprises can be with first reverberator, second reverberator, the 3rd reverberator and/or the plane mirror of light reflected back angle mirror.
Above-mentioned first reverberator, second reverberator and the 3rd reverberator are respectively dihedral angle mirror or cube angle mirror or opal mirror.
The many optical path devices of realization that the utility model is related, its main advantage is:
1, apparatus structure of the present utility model is simple, and the light path adjustment is relatively easy.Many optical path devices are made up of the angle mirror and the mirror group two parts of turning back, the negligible amounts of reflection device, thereby the structure of device is simple relatively.And optical device wherein all is a reflection device, need not to consider the issuable aberration of transmission device, and it is placed light path as optical devices, and is relatively easy during the debugging light path.
2, the utility model is convenient to Project Realization.Many optical path devices simple in structure, installed all uncomplicatedly at the wherein channel of each reflection device source, design, thereby the structural design of whole device realizes easily.The mirror group part of turning back in the device can be changed wherein kind, quantity, the combination and permutation mode of reflection device according to different applications demands, and mode is versatile and flexible.
3, the utility model can be used as the use of optics long-range chamber.Many optical path devices of the present utility model can form 6*2 in theory
N(N=0,1,2 ...) Cheng Guanglu, light beam is repeatedly reflection back and forth in many optical path devices, thereby effectively light path significantly increases, and has improved the sensitivity of surveying.But light path quantity also can be subjected to the restrictions such as size of reverberator in the bore of light beam and deviation, field angle and light energy losses, cube angle mirror and the mirror group of turning back.
4, the utility model can be used as the moving component use.When with the angle mirror in many optical path devices during as the index glass in the time modulation interferometer, having kept on the one hand cube angle mirror is reducing aspect the interferometer calibration accuracy and is strengthening the advantage of the antijamming capability aspect of interferometer, on the other hand the mirror group of turning back in many optical path devices is fixed, can reduce the performance of interferometer aspect these two hardly, can impact other mechanical-optical setup parts of interferometer hardly again simultaneously.Like this, only need do less change, just can finish the novel interferometer that uses the design of the utility model device the cube corner mirror interferometer in past.
5, the utility model is applicable to ordinary light source and LASER Light Source.According to the different application occasion, when requiring different light path quantity, the version of many optical path devices of the present utility model can change.The light source of different aperture angles and bore is different to the structural requirement of many optical path devices, but generally speaking, when utilizing many optical path devices to form six journeys, 12 journeys, 20 quadruple pass light paths, may be applicable to ordinary light source or LASER Light Source; When more than 20 quadruple passes, may more be applicable to LASER Light Source.
6, when the light path number is not less than 12 journeys, and light beam is when the incident of same subregion or same reflecting surface is identical with the outgoing number of times, the light beam deviation compensation automatically that causes because of the dihedral angle deviation of each reflection device in the device.This is an one of major advantage of utilizing many optical path devices of the utility model method design.At this moment, angular deviation between the incident beam of many optical path devices and the outgoing beam only with the mirror group of turning back in two deviation angle of the mirror of fixedly turning back relevant, and irrelevant, thereby demonstrate the automatic compensation character of light beam in this design with two deviation angle of angle mirror and other mirror of turning back.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1-angle mirror, the 2-mirror group of turning back, a-plane mirror, b-first reverberator, c-second reverberator.
Embodiment
Referring to Fig. 1, a kind of device of realizing many light paths, its better embodiment is:
This device comprises the angle mirror 1 and the mirror group 2 of turning back; The mirror group 2 of wherein turning back is to be arranged on the emitting light path of angle mirror 1.When with many optical path devices during as the index glass device of time modulation type interference spectroscope (or optical spectrum imagers), the mirror group 2 of preferably turning back is fixed, and angle mirror 1 can move back and forth along straight line; Angle mirror 1 is to adopt cube angle mirror, and three faces of cube angle mirror are vertical mutually in twos, and each reflecting surface is smooth, the reflectivity isotropy, can be lossless according to former direction return projector.The mirror group 2 of turning back comprises a plurality of reverberators, promptly includes the first reverberator b, the second reverberator c and the 3rd reverberator, can also set up plane mirror a.It is solid rectangular prism, roof prism or hollow two corner cube mirrors etc. that the general first reverberator b, the second reverberator c can adopt the dihedral angle mirror, also can adopt a cube angle mirror is solid block prism or hollow three right-angle plane mirrors, opal mirror etc., and the 3rd reverberator can adopt dihedral angle mirror, cube angle mirror or opal mirror or other the catoptron that light is returned according to former direction.When the light path number is not less than 12 journeys, the light beam deviation compensation automatically that causes because of the dihedral angle deviation of each reflection device in the device, if take all factors into consideration the factor such as aperture angle, bore, energy loss of light beam, its preferred forms is that the light path number of many optical path devices should equal 12 journeys, and light beam is when the incident of the same subregion of angle mirror 1 or same reflecting surface is identical with the outgoing number of times, 12 Cheng Guanglu that form when promptly the 3rd reverberator is for level crossing, perhaps light beam returns 12 Cheng Guanglu that the back directly forms from the outgoing of many optical path devices by the reflection of the 3rd reverberator.Its better embodiment is that the light path number of many optical path devices equals 20 quadruple passes.When it was used as optics long-range chamber, the angle mirror 1 and the mirror group 2 of turning back were fixed.According to applied environment its branch's number is set; Each reverberator can be set to split type, also can be set to combination type.Generally speaking, the locus of each reverberator of reflector group 2 requires to incide their the parallel opposite direction outgoing of light beam energy, also require them not stop the propagation of light beam mutually, preferably, the summit that is on the axis of symmetry of each reflection device overlaps with the summit of angle mirror.The space arrangement position of each reflection device determines that by effective clear aperture that light beam after beam splitting incides the central symmetry axis of angle mirror and angle mirror its optimal spatial putting position requires the light beam of incident parallel with the central symmetry axis of angle mirror in principle in the mirror group 2 of turning back.
According to the partition method of diagonal mirror 1, when the quantity of reverberator in the mirror group 2 of turning back, kind, locus put with variations such as permutation and combination the time situation of multiple other embodiment can be arranged.Core concept of the present utility model is to carry out the design of many light paths on the basis of cube-corner mirror subregion, and the effect of the mirror group 2 of turning back is to cooperate cube angle mirror to realize the design of many light paths, thereby the form of reverberator can change according to the demand of different application occasion in the mirror group 2 of turning back.How the form of the mirror group 2 of but no matter turning back changes, and changes the direction and the path of light ray propagation, and making light propagate in each subregion scope of cube angle mirror and fold is its fundamental purpose.
The device of the many light paths of realization of the present utility model mainly is to utilize the optical characteristics of angle mirror 1 to carry out the design of many optical-path light-paths in conjunction with the mirror group of turning back.With the device of using single cube of angle mirror is example, many optical path devices method for designing of application of aforementioned is divided into six districts with angle mirror 1 in its effective clear aperture, be that each reflecting surface all is divided into two districts in each reflecting surface of angle mirror 1, utilize the reverberator light of turning back again, make light in the subregion scope of angle mirror 1, propagate, to form many light paths.Specifically, light is from some subregion incident, and from corresponding subregion outgoing, turn back to another subregion of angle mirror with certain reverberator with the light of outgoing this moment, makes it again from the respective partition outgoing.Like this can so that light in six subregions of angle mirror or the internal reflection of part subregion, thereby form many optical-path light-paths.
If this device is applied in the time modulation type interference spectroscope (or optical spectrum imagers), wherein angle mirror is as index glass for the general, and then better effects if has more advantages.
Claims (4)
1. device of realizing many light paths, it is characterized in that: described device comprises angle mirror and the mirror group of turning back; The described mirror group of turning back is arranged on the emitting light path of described angle mirror.
2. the device of the many light paths of realization according to claim 1 is characterized in that: described angle mirror is a cube angle mirror; The described mirror group of turning back comprises a plurality of reverberators.
3. the device of the many light paths of realization according to claim 2 is characterized in that: described reverberator comprises can be with first reverberator, second reverberator, the 3rd reverberator and/or the plane mirror of light reflected back angle mirror.
4. the device of the many light paths of realization according to claim 3 is characterized in that: described first reverberator, second reverberator and the 3rd reverberator are respectively dihedral angle mirror or cube angle mirror or opal mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206442116U CN201897660U (en) | 2010-12-06 | 2010-12-06 | Device for realizing multi-optical path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206442116U CN201897660U (en) | 2010-12-06 | 2010-12-06 | Device for realizing multi-optical path |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201897660U true CN201897660U (en) | 2011-07-13 |
Family
ID=44255564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206442116U Expired - Fee Related CN201897660U (en) | 2010-12-06 | 2010-12-06 | Device for realizing multi-optical path |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201897660U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102385699A (en) * | 2011-11-01 | 2012-03-21 | 长春方圆光电技术有限责任公司 | System for acquiring palmprint in dark background |
| CN102486572A (en) * | 2010-12-06 | 2012-06-06 | 中国科学院西安光学精密机械研究所 | Method and device for implementing multiple light paths |
| CN103162833A (en) * | 2011-12-09 | 2013-06-19 | 中国科学院西安光学精密机械研究所 | Interference spectroscopical method capable of changing optical distance number and interferometer using the same |
-
2010
- 2010-12-06 CN CN2010206442116U patent/CN201897660U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486572A (en) * | 2010-12-06 | 2012-06-06 | 中国科学院西安光学精密机械研究所 | Method and device for implementing multiple light paths |
| CN102486572B (en) * | 2010-12-06 | 2014-08-27 | 中国科学院西安光学精密机械研究所 | Method for implementing multiple light paths |
| CN102385699A (en) * | 2011-11-01 | 2012-03-21 | 长春方圆光电技术有限责任公司 | System for acquiring palmprint in dark background |
| CN103162833A (en) * | 2011-12-09 | 2013-06-19 | 中国科学院西安光学精密机械研究所 | Interference spectroscopical method capable of changing optical distance number and interferometer using the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102486408B (en) | Light splitting method for multi-light-path interferometer, and multi-light-path interferometer adopting light splitting method | |
| CN102486572B (en) | Method for implementing multiple light paths | |
| CN103076090B (en) | Laser interferometer optical path difference location method and system | |
| CN101320126B (en) | Two-sided reflection movable mirror interferometer | |
| CN103822715B (en) | A kind of fast illuminated imaging spectrometer based on polarizing beam splitter and formation method | |
| CN101532880B (en) | Double movable mirror interferometer | |
| CN106017673A (en) | MEMS-scanning-micromirror-based double-pass grating monochrometer optical path structure | |
| CN201897660U (en) | Device for realizing multi-optical path | |
| CN104535185B (en) | A kind of mobile light wedge type Fourier spectrometer | |
| US9557221B1 (en) | Interferometer for Fourier transform infrared spectrometry | |
| CN203069274U (en) | Laser interferometer optical path difference positioning system | |
| CN201897569U (en) | Interferometer with multiple optical distances | |
| CN105333816A (en) | Super lateral resolution surface three-dimensional online interference measuring system based on spectral dispersion full field | |
| CN202329812U (en) | Multiple-optical path interferometer with variable optical path number | |
| CN100595533C (en) | Fourier transform interference spectrometer based on slow ray light velocity controlling technology | |
| CN101329200A (en) | Two-way output double-corner reflection body interferometer | |
| CN202330868U (en) | Device for realizing multiple optical ranges and variable optical-range number | |
| CN101251420A (en) | Novel double-movable-mirror interferometer | |
| CN104330162A (en) | Portable Fourier transformation spectrograph | |
| CN103162833A (en) | Interference spectroscopical method capable of changing optical distance number and interferometer using the same | |
| CN101782431A (en) | High-resolution reflection type high-speed rotating mirror interference spectrometer | |
| CN211877754U (en) | Hyperspectral system for gas concentration detection | |
| CN207741854U (en) | Without guide rail fast and stable FTIR spectrum detection device | |
| CN103163641B (en) | A kind of many light paths method and device realizing many light paths and change light number of passes | |
| JP3702440B2 (en) | Michelson interferometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110713 Termination date: 20141206 |
|
| EXPY | Termination of patent right or utility model |