CN102486572A - Method and device for implementing multiple light paths - Google Patents
Method and device for implementing multiple light paths Download PDFInfo
- Publication number
- CN102486572A CN102486572A CN2010105745582A CN201010574558A CN102486572A CN 102486572 A CN102486572 A CN 102486572A CN 2010105745582 A CN2010105745582 A CN 2010105745582A CN 201010574558 A CN201010574558 A CN 201010574558A CN 102486572 A CN102486572 A CN 102486572A
- Authority
- CN
- China
- Prior art keywords
- angle mirror
- light
- mirror
- outgoing
- district
- 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.)
- Granted
Links
Images
Abstract
The invention discloses a method and a device for implementing multiple light paths. The device comprises an angle mirror and a refraction lens group, wherein the refraction lens group is arranged on an emergent light path of the angle mirror. The device has a simple structure; the light path is relatively easy to adjust, and engineering is convenient to implement. According to the method for implementing the multiple light paths, 6*2<N> (N is equal to an integer more than zero) light paths are formed; and a light beam is repeatedly reflected by many times in the multi-light-path device, so that the number of effective light paths is increased remarkably and the detection sensitivity is improved.
Description
Technical field
The invention belongs to optical technical field, relate 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 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.
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 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.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 that Murty proposes and other kinds cube corner mirror interferometer 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 one 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 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, is characterized in simple in structure, and light path is regulated relatively easy, but aperture angle is less, is applicable to LASER Light Source.
Summary of the invention
The objective of the invention is to propose that a kind of calibration accuracy is low relatively, the method for the many light paths of realization that are easy to Project Realization and not only can be used as telecontrol equipment but also can be used as the device of the many light paths of realization of stationary installation.
In order to solve the problem that prior art exists, the technical scheme that the present invention adopts is: a kind of method that realizes many light paths, and its special character is: this method may further comprise the steps:
1): each reflecting surface with angle mirror in effective clear aperture of angle mirror is divided into two zones, i.e. incidence zone and outgoing district;
2): each regional light that will be incident in angle mirror returns angle mirror through first reflector reflects after the angle mirror outgoing;
4): return light all outgoing after the angle mirror reflection again of angle mirror.
Said method is in step 2) and step 4) between can also comprise step 3): each the regional light that returns angle mirror returns angle mirror through second reflector reflects again after the angle mirror outgoing.
Said method also comprises step 5): mirror reflection makes it return by former road through plane reflection again through the light of step 4) outgoing, and through the angle mirror reflection, light path folding is outgoing repeatedly.
Said method also comprises step 6): the light through the step 4) outgoing makes it return by former direction through the reflection of the 3rd reverberator again, and through the angle mirror reflection, light path folding is outgoing repeatedly.
Said method also comprises step 7): repeating step 6), repeat N time, make repeatedly back outgoing of light path folding, N is a natural number.
Said method also comprises step 8): after the mirror reflection of process plane reflection it is returned by former road again the light of step 6) outgoing, make the folding more repeatedly back outgoing of light path.
Said method also comprises step 9): after the mirror reflection of process plane reflection it is returned by former road again the light of step 7) outgoing, make the folding more repeatedly back outgoing of light path.
Above-mentioned steps 1) be to rely on the incident direction of light in effective clear aperture of angle mirror and the position of incidence point, and the subregion is carried out with each reflecting surface of angle mirror in the path that in angle mirror, is reflected according to light; Blueline on each reflecting surface of said angle mirror be by parallel rays incide on this reflecting surface and in angle mirror the difference on other reflectings surface reflection order confirm; And, and intersection point through each reflecting surface identical with the direction of incident ray projection on corresponding reflecting surface.Above-mentioned blueline is identical with the direction of incident ray projection on corresponding reflecting surface, and passes through the intersection point of each reflecting surface.
The reflecting surface of above-mentioned angle mirror is vertical each other in twos.
A kind of device of realizing many light paths, 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 said 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.
Many light paths of realization method and device involved in the present invention, its main advantage is:
1, apparatus structure of the present invention 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, Project Realization is convenient in the present invention.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.
3, the present invention can be used as the use of optics long-range chamber.Many optical path devices of the present invention 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 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.
4, the present invention 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 apparatus of the present invention design the cube corner mirror interferometer in past.
5, the present invention 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 invention 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, possibly be applicable to ordinary light source or LASER Light Source; When more than 20 quadruple passes, possibly 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 inventive 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 the apparatus structure synoptic diagram of the many light paths of realization of the present invention.
Among the figure: 1-angle mirror, the 2-mirror group of turning back, a-plane mirror, b-first reverberator, c-second reverberator.
Embodiment
The method of the many light paths of realization involved in the present invention, referring to Fig. 1, its preferred embodiment is:
This method is realized by following steps:
Step 1: each reflecting surface with angle mirror in effective clear aperture of angle mirror is divided into two zones, and promptly three of angle mirror faces are divided into six districts by three bluelines: I, II, III, IV, V and VI.The division in these six districts requires below satisfying:
(1) light is propagated in effective clear aperture of angle mirror.Be that these dozens have all been reflected once on each reflecting surface at angle mirror of the light on the angle mirror, the direction in ability reflected back incident source.
(2) rely on the incident direction of light and the position of incidence point, and angle mirror is carried out area dividing in angle mirror according to the path that light is reflected.
(3) blueline on each reflecting surface of angle mirror is to incide on this reflecting surface and the difference on each reflecting surface of angle mirror reflection order is confirmed by parallel rays.Blueline on each face is identical with the direction of incident ray projection on corresponding reflecting surface, and crosses the summit (i.e. the intersection point of three reflectings surface) of angle mirror.
Step 2: each regional light that will be incident in angle mirror returns angle mirror through first reflector reflects after the angle mirror outgoing.Specifically: the light that incides angle mirror within it portion through 3 secondary reflections after outgoing, emergent ray and incident ray are parallel to each other, and about the summit symmetry of angle mirror.According to the geometrical optical characteristic of angle mirror, in these six subregions, there is following relation eye point and the position of incidence point of light on reflecting surface:
(1) from the light (incidence point is in the I district) of I district incident, must be from the outgoing of IV district (eye point be in the IV district); Reversibility by light path knows that vice versa.
(2) from the light (incidence point is in the II district) of II district incident, must be from the outgoing of V district (eye point be in the V district); Reversibility by light path knows that vice versa.
(3) from the light (incidence point is in the III district) of III district incident, must be from the outgoing of VI district (eye point be in the VI district); Reversibility by light path knows that vice versa.
The direction of advancing according to light: light incides the I district of angle mirror 1 according to the arrow indicated direction, through after the triple reflection by the outgoing of IV district; This emergent ray is turned back to the III district of angle mirror by first reflector reflects.First reverberator here can adopt corner cube mirror b.
Step 3: each the regional light that returns angle mirror returns angle mirror through second reflector reflects more again after the angle mirror outgoing.
Specifically: the light that returns angle mirror after step 2 is accomplished in angle mirror after triple reflection from VI district outgoing to the second reverberator, second reverberator here also can be corner cube mirror c; Also can be directly to get into step 4 from step 2 back.
Step 4: return light all outgoing after the angle mirror reflection again of angle mirror.
Turned back to the V district of angle mirror like above-mentioned step 2 or 3 once more by the light of corner cube mirror c reflection, in angle mirror after the triple reflection from the outgoing of II district.
Light is beaten at the incident subregion of angle mirror and outgoing subregion, and the order of each reflecting surface is: I district (incident)-IV district (outgoing)-b-III district (incident)-VI district (outgoing)-c-V district (incident)-II district (outgoing).
In other steps 2 from the II district, the light of III district incident is also last respectively from V district, the outgoing of VI district of angle mirror by above-mentioned processing procedure in like manner; In like manner, from the IV district, the light of V district, the incident of VI district is last respectively from I district, II district, the outgoing of III district of angle mirror according to above-mentioned same processing procedure.Like this, one road light of entering with six Cheng Guanglu outgoing, has so just been realized the purpose of six Cheng Guanglu after angle mirror, first reverberator and second reverberator are handled as stated above.
In like manner, if light beam has more for a long time at the order of reflection of each reflecting surface of angle mirror, will form more multipass light path.
The method of the many light paths of realization of the present invention can also comprise step 5 after step 4: mirror reflection makes it return by former road through plane reflection again through the light of step 4 outgoing, and through the angle mirror reflection, light path folding is outgoing repeatedly, thereby forms more multipass light path.
Specifically: the emergent ray of II district outgoing is reflected by plane mirror a again from step 4, thereby makes light return according to former road.
So just, formed the light path design of 12 journeys.Angle from angle mirror; Light is beaten at the incident subregion of angle mirror and outgoing subregion, and the order of each reflecting surface is: I district (incident)-IV district (outgoing)-b-III district (incident)-VI district (outgoing)-c-V district (incident)-II district (outgoing)-a-II district (incident)-V district (outgoing)-c-VI district (incident)-III district (outgoing)-b-IV district (incident)-I district (outgoing).
The effect of first reverberator of the present invention is direction and the path of change from the light of the IV district outgoing of angle mirror, makes it to turn back to the III district again, and promptly the travel path of light is in proper order: IV district-III district; The effect of second reverberator is direction and the path of change from the light of the VI district outgoing of cube angle mirror, makes it to turn back to the V district again, and promptly the travel path of light is in proper order: VI district-V district; The effect of plane mirror a is the direction of change from the light of the II district outgoing of cube angle mirror, makes it former road and turns back to the II district, and promptly the travel path of light is in proper order: II district-II district.According to the partition method of diagonal mirror, six subregions of diagonal mirror, light during incident, according to the direction of light ray propagation and the order that is reflected, also have seven kinds of possible situation from the I district at least, and the correspondence travel path that the mirror group changes light of turning back is in proper order:
(1) IV district-III district, VI district-II district, V district-V district;
(2) IV district-II district, V district-III district, VI district-VI district;
(3) IV district-II district, V district-VI district, III district-III district;
(4) IV district-V district, II district-III district, VI district-VI district;
(5) IV district-V district, II district-VI district, III district-III district;
(6) IV district-VI district, III district-II district, V district-V district;
(7) IV district-VI district, III district-V district, II district-II district.
The method of the many light paths of realization of the present invention can also comprise step 6 after step 4: the light through step 4 outgoing makes it return by former direction through the reflection of the 3rd reverberator again; Be that repeating step 2 is to step 4; Through the angle mirror reflection, light path folding is outgoing repeatedly, thereby forms more multipass light path.
In order to realize the more purpose of multipass light path, can also comprise step 7 after the step 6 of the present invention: repeating step 6, repeat N time, make repeatedly outgoing of light path folding, N is a natural number.
Specifically:
Light that will angle mirror II district's outgoing from step 4 is again through the reflection of the 3rd reverberator; Return the II district of angle mirror, make light be shifted, still turn back to outgoing behind the angle mirror I district by former direction; That is to say; According to and original light beam return at the angle mirror and the opposite direction in the direction of propagation of turning back between the mirror group, but be not that former road is returned, this mirror group of turning back is made up of the first above-mentioned reverberator, second reverberator, the 3rd reverberator and/or level crossing etc.
The first above-mentioned reverberator, second reverberator and the 3rd reverberator can adopt dihedral angle mirror, cube angle mirror, also can be the opal mirrors, and perhaps other can make the catoptron that light returns by former direction.
At this moment, if during the direct outgoing of the emergent ray in angle mirror I district, 12 journey light paths have then been formed; (can have and depart from returning of displacement if the emergent ray in angle mirror I district returns angle mirror through reverberators such as dihedral angle mirror, cube angle mirror or opal mirrors by former direction again; Also available flat mirror reflects and former road are returned); When light directly penetrates once more, 18 journey light paths have then been formed after the outgoing of II district; Device returns angle mirror by former direction if the emergent ray in angle mirror I district also can be reflected once more, and so circulation is gone down, and then can form 6N journey light path, and wherein N is a natural number.But the light path quantity of this moment receives the size of angle mirror and reverberator, the bore of light beam and the energy loss restriction of field angle and light.
Can also comprise step 8 after the step 6 of the present invention: the emergent light that obtains after step 6 is handled makes the repeatedly folding back outgoing of light path again through making it return by former road after the plane reflection mirror reflection.
Specifically: after light path forms the 6N journey, will use the plane mirror vertical reflection again, and make light path return, and then can form the light path of 12N journey by former road from the light of angle mirror outgoing.The light path quantity of this moment also can receive size, the bore of light beam and the energy loss restriction of field angle and light of cube angle mirror and the reverberator in the mirror group of turning back.
Can also comprise step 9 after the step 7 of the present invention: after the mirror reflection of process plane reflection it is returned by former road again the light of step 7) outgoing, make the folding more repeatedly back outgoing of light path.The principle of specifically turning back is same as described above.
Referring to Fig. 1, a kind of device of realizing many light paths, its preferred embodiments is: comprise angle mirror 1 and turn back mirror group 2; 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 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 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, and perhaps light beam returns 12 Cheng Guanglu that the back directly forms from the outgoing of many optical path devices by the 3rd reflector reflects.Its preferred embodiments is that the light path number of many optical path devices equals 20 quadruple passes.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 reflector group 2 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.
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 invention is on the basis of cube-corner mirror subregion, 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.
The device of the many light paths of realization of the present invention mainly is to utilize the optical characteristics of the angle mirror 1 mirror group that combines to turn back to carry out the design of many optical-path light-paths.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 (12)
1. method that realizes many light paths is characterized in that: may further comprise the steps:
1): each reflecting surface with angle mirror in effective clear aperture of angle mirror is divided into two zones, i.e. incidence zone and outgoing district;
2): each regional light that will be incident in angle mirror returns angle mirror through first reflector reflects after the angle mirror outgoing;
4): return light all outgoing after the angle mirror reflection again of angle mirror.
2. the method for the many light paths of realization according to claim 1 is characterized in that: said method is in step 2) and step 4) between also comprise step 3): each the regional light that returns angle mirror returns angle mirror through second reflector reflects again after the angle mirror outgoing.
3. the method for the many light paths of realization according to claim 2 is characterized in that: said method also comprises step 5): mirror reflection makes it return by former road through plane reflection again through the light of step 4) outgoing, and through the angle mirror reflection, light path folding is outgoing repeatedly.
4. the method for the many light paths of realization according to claim 2 is characterized in that: said method also comprises step 6): the light through the step 4) outgoing makes it return by former direction through the reflection of the 3rd reverberator again, and through the angle mirror reflection, light path folding is outgoing repeatedly.
5. the method for the many light paths of realization according to claim 4 is characterized in that: said method also comprises step 7): repeating step 6), repeat N time, make repeatedly back outgoing of light path folding, N is a natural number.
6. the method for the many light paths of realization according to claim 4 is characterized in that: said method also comprises step 8): after the mirror reflection of process plane reflection it is returned by former road again the light of step 6) outgoing, make repeatedly back outgoing of light path folding.
7. the method for the many light paths of realization according to claim 5 is characterized in that: said method also comprises step 9): after the mirror reflection of process plane reflection it is returned by former road again the light of step 7) outgoing, make repeatedly back outgoing of light path folding.
8. according to the method for claim 1 or 2 or 3 or 4 or 5 or the 6 or 7 many light paths of described realization; It is characterized in that: said step 1) is to rely on the incident direction of the light in effective clear aperture of angle mirror and the position of incidence point, and the subregion is carried out with each reflecting surface of angle mirror in the path that in angle mirror, is reflected according to light; Blueline on each reflecting surface of said angle mirror be by parallel rays incide on this reflecting surface and in angle mirror the difference on other reflectings surface reflection order confirm; And, and intersection point through each reflecting surface identical with the direction of incident ray projection on corresponding reflecting surface.
9. device of realizing many light paths, it is characterized in that: said device comprises angle mirror and turns back the mirror group; The said mirror group of turning back is arranged on the emitting light path of said angle mirror.
10. the device of the many light paths of realization according to claim 9 is characterized in that: said angle mirror is a cube angle mirror; The said mirror group of turning back comprises a plurality of reverberators.
11. the device of the many light paths of realization according to claim 10 is characterized in that: said reverberator comprises can be with first reverberator, second reverberator, the 3rd reverberator and/or the plane mirror of light reflected back angle mirror.
12. the device of the many light paths of realization according to claim 11 is characterized in that: said 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 |
|---|---|---|---|
| CN201010574558.2A CN102486572B (en) | 2010-12-06 | 2010-12-06 | Method for implementing multiple light paths |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010574558.2A CN102486572B (en) | 2010-12-06 | 2010-12-06 | Method for implementing multiple light paths |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102486572A true CN102486572A (en) | 2012-06-06 |
| CN102486572B CN102486572B (en) | 2014-08-27 |
Family
ID=46152085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010574558.2A Active CN102486572B (en) | 2010-12-06 | 2010-12-06 | Method for implementing multiple light paths |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102486572B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777306A (en) * | 2014-01-23 | 2014-05-07 | 中国人民解放军总参谋部第六十研究所 | Double-ridge dynamically-adjustable orienting device and adjusting method thereof |
| CN105445195A (en) * | 2014-12-17 | 2016-03-30 | 邓文平 | Sample measuring cell |
| CN105445196A (en) * | 2014-12-17 | 2016-03-30 | 邓文平 | Sample measuring cell |
| CN108072612A (en) * | 2016-11-07 | 2018-05-25 | 云南师范大学 | A kind of compact variable light path gas sample cell |
| CN108563006A (en) * | 2018-02-01 | 2018-09-21 | 深圳海纳光科技有限公司 | A kind of four corner cube mirrors add lustre to journey system |
| CN110687540A (en) * | 2019-09-02 | 2020-01-14 | 歌尔股份有限公司 | Method for detecting distance measurement accuracy of optical module to be detected |
| CN114383539A (en) * | 2021-12-16 | 2022-04-22 | 天津大学 | Laser beam splitting and folding optical path system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2760525Y (en) * | 2004-12-31 | 2006-02-22 | 中国科学院西安光学精密机械研究所 | Optical time-delay device capable of providing dual optical path |
| CN1796946A (en) * | 2004-12-30 | 2006-07-05 | 天津大学 | High birefractive weak mode coupling masuring apparatus of polarization maintaining optical fibre and control method |
| CN201897660U (en) * | 2010-12-06 | 2011-07-13 | 中国科学院西安光学精密机械研究所 | Device for realizing multi-optical path |
-
2010
- 2010-12-06 CN CN201010574558.2A patent/CN102486572B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1796946A (en) * | 2004-12-30 | 2006-07-05 | 天津大学 | High birefractive weak mode coupling masuring apparatus of polarization maintaining optical fibre and control method |
| CN2760525Y (en) * | 2004-12-31 | 2006-02-22 | 中国科学院西安光学精密机械研究所 | Optical time-delay device capable of providing dual optical path |
| CN201897660U (en) * | 2010-12-06 | 2011-07-13 | 中国科学院西安光学精密机械研究所 | Device for realizing multi-optical path |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777306A (en) * | 2014-01-23 | 2014-05-07 | 中国人民解放军总参谋部第六十研究所 | Double-ridge dynamically-adjustable orienting device and adjusting method thereof |
| CN103777306B (en) * | 2014-01-23 | 2016-01-20 | 中国人民解放军总参谋部第六十研究所 | The dynamic adjustable orienting device of two ridge and control method thereof |
| CN105445195A (en) * | 2014-12-17 | 2016-03-30 | 邓文平 | Sample measuring cell |
| CN105445196A (en) * | 2014-12-17 | 2016-03-30 | 邓文平 | Sample measuring cell |
| CN108072612A (en) * | 2016-11-07 | 2018-05-25 | 云南师范大学 | A kind of compact variable light path gas sample cell |
| CN108563006A (en) * | 2018-02-01 | 2018-09-21 | 深圳海纳光科技有限公司 | A kind of four corner cube mirrors add lustre to journey system |
| CN108563006B (en) * | 2018-02-01 | 2020-06-02 | 深圳海纳光科技有限公司 | Four-right-angle reflector optical path increasing system |
| CN110687540A (en) * | 2019-09-02 | 2020-01-14 | 歌尔股份有限公司 | Method for detecting distance measurement accuracy of optical module to be detected |
| CN114383539A (en) * | 2021-12-16 | 2022-04-22 | 天津大学 | Laser beam splitting and folding optical path system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102486572B (en) | 2014-08-27 |
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 | |
| CN101571421B (en) | Hadamard transform imaging spectrometer | |
| CN101320126B (en) | Two-sided reflection movable mirror interferometer | |
| CN103076090B (en) | Laser interferometer optical path difference location method and system | |
| CN101532880B (en) | Double movable mirror interferometer | |
| CN106017673A (en) | MEMS-scanning-micromirror-based double-pass grating monochrometer optical path structure | |
| CN104535185B (en) | A kind of mobile light wedge type Fourier spectrometer | |
| CN201897660U (en) | Device for realizing multi-optical path | |
| 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 | |
| CN100595533C (en) | Fourier transform interference spectrometer based on slow ray light velocity controlling technology | |
| CN202329812U (en) | Multiple-optical path interferometer with variable optical path number | |
| CN101329200A (en) | Two-way output double-corner reflection body interferometer | |
| CN101251420A (en) | Novel double-movable-mirror interferometer | |
| CN202330868U (en) | Device for realizing multiple optical ranges and variable optical-range number | |
| 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 | |
| CN103163641B (en) | A kind of many light paths method and device realizing many light paths and change light number of passes | |
| CN103163641A (en) | Multiple-optical-range method and device for achieving multiple optical ranges and variable optical-range number | |
| CN207741854U (en) | Without guide rail fast and stable FTIR spectrum detection device | |
| CN113640241B (en) | Oscillating Fourier transform infrared spectrum device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |