CN202330868U - Device for realizing multiple optical ranges and variable optical-range number - Google Patents
Device for realizing multiple optical ranges and variable optical-range number Download PDFInfo
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- CN202330868U CN202330868U CN2011205144538U CN201120514453U CN202330868U CN 202330868 U CN202330868 U CN 202330868U CN 2011205144538 U CN2011205144538 U CN 2011205144538U CN 201120514453 U CN201120514453 U CN 201120514453U CN 202330868 U CN202330868 U CN 202330868U
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Abstract
The utility model discloses a device for realizing multiple optical ranges and variable optical-range number. The device comprises an angle mirror and a mirror lens group, wherein the mirror lens group is arranged on an emergent light path of the angle mirror; the mode for arranging the mirror lens group and the angle mirror is as follows: the mirror lens group is fixed and the angle mirror moves along a straight line or the mirror lens group and the angle mirror are fixed respectively; and the angle mirror is a cube angle mirror, and every two of three surfaces of the cube angle mirror are vertical. The device disclosed by the utility model is lower in calibration accuracy and easy in engineering implementation, and not only can be used as a moving device, but also can be used as a fixed device.
Description
Technical field
The utility model belongs to optical technical field, relates to a kind of angle mirror that utilizes and realizes device fixing and variable light path.
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 high (Connes advantage) and low noise, measuring speed be fast.It has expanded the infrared spectroscopic study field, and recent two decades receives the extensive concern of countries in the world and obtained fast development.
Traditional time modulation type interference spectroscope is that Michelson interferometer exists two subject matters:
1, generally needs 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 property, 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, and the causes system poor stability has reduced ability and antijamming capability that this type of spectrometer adapts to rugged surroundings.Dynamic stability problem people to 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, like 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 the angle mirror that above three kinds of reverberators are substituted Michelson interferometer respectively simultaneously during with horizontal glass, although all insensitive to inclination, all can run into the traversing problem of reverberator.Utilize single cube of angle mirror to be limited to and only realize double journey at the most; 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 through sample to increase, to improve detection sensitivity.In absorption spectrum detects; For fixing absorbing medium; Can let 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 through 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; Be characterized in simple in structure; Light path is regulated relatively easy, but aperture angle is less, is applicable to LASER Light Source; But the light path number of these many light paths is all fixed, and does not also occur the variable many optical path devices of light path number at present.
The utility model content
In order to solve existing technical matters in the background technology, the utility model provides the device of a kind of calibration accuracy many light paths of realization low relatively, that be easy to Project Realization and variation light path and not only can be used as telecontrol equipment but also can be used as the many light paths of realization of stationary installation and the device of variation light path.
The technical solution of the utility model is:
A kind of device of realizing many light paths and variation light path number, its special character is: comprise angle mirror and turn back the mirror group; The said mirror group of turning back is arranged on the emitting light path of angle mirror; Said set-up mode of turning back mirror group and angle mirror be turn back that the mirror group is fixed, angle mirror moves along a straight line or turn back mirror group and angle mirror all fixing; Said angle mirror is a cube angle mirror, and three faces of cube angle mirror are vertical in twos.
The above-mentioned mirror group of turning back comprises that first reverberator, second reverberator, the 3rd reverberator are or/and plane mirror; It is to intersect the summit that angle mirror is crossed on plane that the diagonal line coplane or the crossing rib of rib and one of them face of angle mirror belong to that said first reverberator, second reverberator or the 3rd reverberator are provided with the position, and this plane parallel is in incident ray.
Above-mentioned first reverberator, second reverberator and the 3rd reverberator are dihedral angle mirror, cube angle mirror or opal mirror.
The utility model has the advantages that:
1, the utility model design can realize many light paths of changing, the light path that the rotation of the corner cube mirror in many optical path devices promptly capable of using changes.When rotation during corner cube mirror, the light beam of same orientation incident can increase at the angle mirror and the order of reflection of turning back between the mirror group, thereby makes the light path number increase, and is the increase of multiple in less angular light number of passes amount.When needs increase light path was counted, the some catoptrons that only need to rotate in the mirror group of turning back can be realized.
2, the utility model realizes that the design rule property of many light paths is strong.One Zhizheng incides the light back and forth folding reflection in angle mirror in the angle mirror, and the direction of reflection ray and position are confirmed easily, and be regular strong.In embodiment, in many optical path devices of forming by angle mirror and two right angle reflectors,, see over from the angle of incident light at the inner reflection spot of reflection ray on angle mirror of angle mirror, be to be on the circumference in the center of circle with the angle mirror summit.Thereby rule is obvious, is convenient to design.
3, the utility model realizes that the used reflection device of many light paths is few, and detection sensitivity is high.Owing to need to rotate the some catoptrons in the mirror group of turning back, can realize more light path numbers, and not need to increase in addition reflection device, thereby this design to be flexible, used reflection device is less.Particularly make in the optics long-range chamber of light source, thisly do not increase reflection device, but light path quantity only depends on the change of putting the orientation and the method that can significantly increase, improved the sensitivity of surveying greatly at laser spectrum analyser or of laser.
4, the apparatus structure of the 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.
5, 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, combination and the arrangement mode of reflection device according to different applications demands, and mode is versatile and flexible.
6, the utility model can be used as the use of optics long-range chamber.Many optical path devices of the utility model can form several journeys in theory to journey light paths up to a hundred, and 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 receive the restrictions such as size of reverberator in bore and deviation, field angle and light energy losses, cube angle mirror and the mirror group of turning back of light beam.
7, 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; Kept on the one hand cube angle mirror in the advantage that reduces aspect the interferometer calibration accuracy with the antijamming capability aspect that strengthens 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 accomplish the novel interferometer that uses the design of the utility model device the cube corner mirror interferometer in past.
8, 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 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 about 24 journey light paths, possibly be applicable to ordinary light source or LASER Light Source; When more than 24 journeys, possibly more be applicable to LASER Light Source.
9, when light beam 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.At this moment, the 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 with two deviation angle of angle mirror and other mirror of turning back.
Description of drawings
Fig. 1 is many optical path devices structural representation of realization 12 journeys of the utility model;
Fig. 2 is many optical path devices structural representation of realization 36 journeys of the utility model;
Fig. 3 is the reflection spot synoptic diagram of light beam in angle mirror when facing the axis of symmetry of angle mirror under Fig. 1 structure;
Fig. 4 is the reflection spot synoptic diagram of light beam in angle mirror when facing the axis of symmetry of angle mirror under Fig. 2 structure;
Fig. 5 is the reflection sequential schematic of incident light in angle mirror during 12 Cheng Guangcheng when facing the angle mirror axis of symmetry;
Fig. 6 is a corner cube mirror rotation mode synoptic diagram less in the mirror group of turning back among Fig. 5;
Fig. 7 is that corner cube mirror among Fig. 5 is according to the postrotational synoptic diagram of the rotation mode of Fig. 6;
Among the figure: 1-angle mirror, the 2-mirror group of turning back, 3-first corner cube mirror, 4-second corner cube mirror.
Embodiment
Referring to Fig. 1, a kind of device of realizing many light paths and variation light path number, its preferred embodiments is: comprise angle mirror 1 and turn back mirror group 2; The mirror group 2 of wherein turning back is arranged on the emitting light path of angle mirror 1.When the index glass device that will install as 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, perhaps swings, rotation etc.; Angle mirror 1 is to adopt cube angle mirror, and three faces of cube angle mirror are vertical each other 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 first reverberator 3, second reverberator 4, can also set up the 3rd reverberator and plane mirror.General first reverberator 3, second reverberator 4 can adopt dihedral angle mirror (being solid rectangular prism, roof prism or hollow two corner cube mirrors etc.); Also can adopt a cube angle mirror (being solid block prism or hollow three right-angle plane mirrors), opal mirror etc., 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.
Referring to Fig. 5-Fig. 7, a kind of many optical path devices that utilize rotation to realize changing the light path number, the light path that the rotation of the corner cube mirror in many optical path devices promptly capable of using changes.The dash area corner cube mirror 4 in the mirror group of representing to turn back among the figure, 1/3 size of the corresponding cube corner aperture of mirror of this corner cube mirror when facing the angle mirror axis of symmetry; And 1/2 size of another corner cube mirror 3 corresponding cube corner apertures of mirror in the mirror group of turning back.When rotation during corner cube mirror 4, the light beam of same orientation incident can be because of the increasing of angle mirror and the order of reflection between the mirror group of turning back, and the increase of generation light path, and be the increase of multiple in less angular light number of passes amount.When facing angle mirror 1 axis of symmetry, in Fig. 5, the seamed edge of corner cube mirror 4 (or its extended line) intersects with the axis of symmetry of angle mirror 1, and this intersection point is designated as O.The spinning solution of corner cube mirror 4 is: with intersection point O is point of fixity, and the axis of symmetry of corner cube mirror 4 around angle mirror 1 is rotated counterclockwise.In embodiment Fig. 6, corner cube mirror 4 has been rotated counterclockwise 20 °.Light path number among Fig. 5 is 12 journeys, and after 20 ° of rotation corner cube mirror 4 angles, the light path number just is increased to 28 journeys among Fig. 7.When continuing rotation, the light path number also can continue to increase.So, just, produced the light path that changes.The variation of light path number helps carrying out contrast experiment and the requirement of accomplishing the different technologies index, is applied to highly sensitive detection and occasion demand complicated and changeable, and the volume of instrument itself, weight etc. then almost do not change.
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.Its preferred embodiments is that the light path number of device equals 24 journeys, the 24 journey light paths that form when promptly the 3rd reverberator is for level crossing, and perhaps light beam returns the 24 journey light paths that the back directly forms from the outgoing of many optical path devices by the 3rd reflector reflects.When it was used as optics long-range chamber, angle mirror 1 was fixed with the mirror group 2 of turning back.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 the mirror group 2 of turning back requires to incide their the parallel opposite direction outgoing of light beam ability; 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.Effective clear aperture that central symmetry axis and the angle mirror of angle mirror are incided in the space arrangement position of each reflection device in the mirror group 2 of turning back by light beam after beam splitting confirms that its optimal spatial putting position requires the light beam of incident parallel with the central symmetry axis of angle mirror in principle.
Referring to Fig. 1, the putting position of second reverberator 4 is: the diagonal line coplane of its crossing rib and angle mirror 1 one of them face.Like this, one road light of entering with 12 journey light path outgoing, has so just been realized 12 journey light paths after angle mirror 1, first reverberator 3 and second reverberator 4 are handled as stated above.Referring to Fig. 3, be in such cases, to see over from the axis of symmetry direction of angle mirror 1, light is beaten position and the order of propagation at the point of angle mirror 1.
Referring to Fig. 2, other a kind of putting position of second reverberator 4 is: the line coplane of crossing angle mirror 1 summit on its crossing rib and angle mirror 1 one of them face.At this moment, see over from the axis of symmetry of angle mirror 1, angle mirror 1 has been divided into 36 five equilibriums.Like this, one road light of entering with 36 journey light path outgoing, has so just been realized 36 journey light paths after angle mirror 1, first reverberator 3 and second reverberator 4 are handled as stated above.Referring to Fig. 4, be in such cases, to see over from the axis of symmetry direction of angle mirror 1, light is beaten position and the order of propagation at the point of angle 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.The core concept of the utility model is to utilize cube angle mirror and a plurality of reverberator to carry out the design of many light paths, 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 in each subregion scope of cube angle mirror, propagate and fold is its fundamental purpose.
Claims (3)
1. a device of realizing many light paths and variation light path number is characterized in that: comprise angle mirror and turn back the mirror group; The said mirror group of turning back is arranged on the emitting light path of angle mirror; Said set-up mode of turning back mirror group and angle mirror be turn back that the mirror group is fixed, angle mirror moves along a straight line or turn back mirror group and angle mirror all fixing; Said angle mirror is a cube angle mirror, and three faces of cube angle mirror are vertical in twos.
2. the device of many light paths of realization according to claim 1 and variation light path number is characterized in that: the said mirror group of turning back comprises that first reverberator, second reverberator, the 3rd reverberator are or/and plane mirror; It is to intersect the summit that angle mirror is crossed on plane that the diagonal line coplane or the crossing rib of rib and one of them face of angle mirror belong to that said first reverberator, second reverberator or the 3rd reverberator are provided with the position, and this plane parallel is in incident ray.
3. the device of many light paths of realization according to claim 2 and variation light path number is characterized in that: above-mentioned first reverberator, second reverberator and the 3rd reverberator are dihedral angle mirror, cube angle mirror or opal mirror.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011205144538U CN202330868U (en) | 2011-12-09 | 2011-12-09 | Device for realizing multiple optical ranges and variable optical-range number |
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| CN2011205144538U CN202330868U (en) | 2011-12-09 | 2011-12-09 | Device for realizing multiple optical ranges and variable optical-range number |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163641A (en) * | 2011-12-09 | 2013-06-19 | 中国科学院西安光学精密机械研究所 | Multiple-optical-range method and device for achieving multiple optical ranges and variable optical-range number |
| CN103163641B (en) * | 2011-12-09 | 2016-12-14 | 中国科学院西安光学精密机械研究所 | A kind of many light paths method and device realizing many light paths and change light number of passes |
| CN109580185A (en) * | 2018-12-26 | 2019-04-05 | 北京安和博控科技有限公司 | A kind of portable light is away from calibrating installation |
-
2011
- 2011-12-09 CN CN2011205144538U patent/CN202330868U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163641A (en) * | 2011-12-09 | 2013-06-19 | 中国科学院西安光学精密机械研究所 | Multiple-optical-range method and device for achieving multiple optical ranges and variable optical-range number |
| CN103163641B (en) * | 2011-12-09 | 2016-12-14 | 中国科学院西安光学精密机械研究所 | A kind of many light paths method and device realizing many light paths and change light number of passes |
| CN109580185A (en) * | 2018-12-26 | 2019-04-05 | 北京安和博控科技有限公司 | A kind of portable light is away from calibrating installation |
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| 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: 20120711 Termination date: 20151209 |
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| EXPY | Termination of patent right or utility model |