CN102928951A - Laser light source special for michelson interferometer - Google Patents
Laser light source special for michelson interferometer Download PDFInfo
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- CN102928951A CN102928951A CN2012104460382A CN201210446038A CN102928951A CN 102928951 A CN102928951 A CN 102928951A CN 2012104460382 A CN2012104460382 A CN 2012104460382A CN 201210446038 A CN201210446038 A CN 201210446038A CN 102928951 A CN102928951 A CN 102928951A
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- light source
- michelson interferometer
- laser
- collimation lens
- slidingtype
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Abstract
The invention relates to a laser light source special for a michelson interferometer. The laser light source comprises a light source casing, a laser tube, a sliding collimating lens focalizer and a collimating lens, the laser tube is used for generating dotted extended light sources and installed in one end of the light source casing, the sliding collimating lens focalizer is sleeved outside the other end of the light source casing and can slide leftwards or rightwards along the light source casing, the collimating lens is fixedly installed at one end of the sliding collimating lens focalizer, and used for performing collimating or beam expansion to lasers emitted by the laser tube, the end of the sliding collimating lens focalizer is far from the laser tube, and a connection bracket which is used for being connected with the michelson interferometer is further arranged on the light source casing. According to the laser light source special for the michelson interferometer, miniaturization and integration of the laser light source are achieved, and by means of the connection bracket, the laser light source and the michelson interferometer are integrated, so that accuracy of testing is improved; and by means of the sliding collimating lens focalizer, the collimating lens undertakes work of collimation and beam expansion of the lasers, so that adding of beam expansion lenses is avoided, regulating steps are simplified, and regulating speeds of the michelson interferometer are greatly accelerated.
Description
Technical field
The present invention relates to a kind of LASER Light Source, be specifically related to the special-purpose LASER Light Source of a kind of Michelson interferometer.
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Background technology
Michelson interferometer be aly be skillfully constructed, compact conformation and the very high optical gauge of measuring accuracy, in physics, particularly occupy very important status in the Modern Physics development, can finish multiple analytical test and experimental teaching work, this instrument also is one of modal experimental apparatus of China university physical experiment center.To be a branch of incident light be divided into being returned by the flat mirror reflects of correspondence separately behind two bundles and producing interference by beam-splitter the principle of Michelson interferometer, the different light paths of two-beam can be realized by regulating the refractive index of interfering arm lengths and changing medium in the interference, thereby interference pattern is changed.It is mainly used in the measurement of length and refractive index.
Referring to Fig. 2, usually before testing and test, the use Michelson interferometer all needs instrument is adjusted to duty, even mirror M
111 and mirror M
212 with beam-splitter G
19 distance about equally, and M
111 and M
2Mutually vertical between 12, require simultaneously incident light and beam-splitter G
19 one-tenth 45
0Angle.Regulate Michelson interferometer general dual mode arranged: a kind of is direct adjusting, and another kind is to use other devices to carry out auxiliary adjustment.The mode that the first is directly regulated need to expend a large amount of time, and the accuracy of regulating is not high; The second regulative mode, the multi-purpose laser device cooperates beam expanding lens to carry out auxiliary adjustment at present, the accuracy of this regulative mode increases than the first regulative mode, the adjusting time also reduces to some extent, but the defective of this method is: laser instrument, beam expanding lens and Michelson interferometer are separated from each other, be used in combination during experiment, cause the key elements such as contour, coaxial, distance between the three and incident angle all need reconfigure at every turn, and easily be subject to the external interference impact, thereby make the adjusting Michelson interferometer expend a large amount of time.
Summary of the invention
For the prior art above shortcomings, the object of the present invention is to provide the special-purpose LASER Light Source of a kind of Michelson interferometer to be used for auxiliary Michelson interferometer and regulate, thereby make interferometer fast, accurately reach duty.
For achieving the above object, the present invention adopts following technical scheme: the special-purpose LASER Light Source of a kind of Michelson interferometer, comprise light shell outer cover and for generation of the laser tube of point-like expansion light source, described laser tube is installed on the inside of light shell outer cover one end, it is characterized in that: also comprise slidingtype collimation lens focalizer and collimating mirror, described slidingtype collimation lens focalizer is socketed in outside the other end of light shell outer cover, and can horizontally slip along light shell outer cover, described collimating mirror is fixedly mounted on slidingtype collimation lens focalizer away from an end of laser tube, is used for the laser that laser tube sends is collimated or expands; Also be provided with the connection bracket that links to each other for Michelson interferometer on the described light shell outer cover.
Further, described light shell outer cover is cylindric, and consisted of by left housing department and right casing section, described left housing department and right casing section are the integral type structure, wherein the internal diameter of right casing section is identical with the internal diameter of left housing department, the external diameter of right casing section is less than the external diameter of left housing department, the be connected external diameter of part of slidingtype collimation lens focalizer and right casing section is identical with the external diameter of left housing department, slidingtype collimation lens focalizer and the right casing section external diameter of internal diameter partly greater than right casing section that be connected.Light shell outer cover is made of one left housing department and the right casing section of structure, and the external diameter of right casing section is less than left housing department, convenient slidingtype collimation lens focalizer is socketed in outside the right casing section, also be convenient to mobile slidingtype collimation lens focalizer simultaneously and focus.
As the optimization of technique scheme, the special-purpose LASER Light Source of Michelson interferometer of the present invention also comprises the locating device for positioning sliding type collimation lens focalizer.Michelson interferometer is very accurate instrument, a little concussion is all very large on its impact, therefore, and when slidingtype collimation lens focalizer slides into the appropriate location and tests, adopt locating device that it is positioned and to make as far as possible the interference fringe steady change, improved test accuracy.
A nearlyer step ground, described locating device comprise register pin and are arranged on the outside chute that is used in conjunction with register pin of slidingtype collimation lens focalizer.Use register pin and chute as locating device, simple in structure, easy to operate and directly perceived; Simultaneously, cheap.
Described laser tube is semiconductor laser tube.Semiconductor laser tube has that volume is little, power consumption is little, good stability, long service life, to the advantage such as environmental requirement is low.
With respect to prior art, the present invention has following advantage:
1, the LASER Light Source that provides of the special-purpose LASER Light Source of Michelson interferometer of the present invention with compare the miniaturization that not only realized LASER Light Source and integrated with quasi-instrument, and by connection bracket itself and Michelson interferometer are connected as a single entity, contour, coaxial, the distance of having avoided that the occasional combination instrument causes, the debugging of incident angle, thus speed and the accuracy regulated improved.
2, the present invention is by utilizing slidingtype collimation lens focalizer to make collimating mirror bear simultaneously the collimation of laser and expanding work, avoided adding beam expanding lens, simplified regulating step, thereby the governing speed of instrument is accelerated greatly, proved that through long-term the use time from common 20 a few minutes that this light source can make the student Michelson interferometer be transferred to duty shortened within 1～2 minute.
3, the present invention has also reduced use cost owing to not needing to add beam expanding lens.
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Description of drawings
The structural representation of Fig. 1-special-purpose LASER Light Source one embodiment of Michelson interferometer of the present invention.
The special-purpose LASER Light Source of Fig. 2-Michelson interferometer of the present invention and Michelson interferometer wiring layout.
Among the figure, the 1-light shell outer cover; The 2-connection bracket; 3-slidingtype collimation lens focalizer; The 4-chute; The 5-register pin; The 6-collimating mirror; 7-LASER Light Source of the present invention; The 8-lock-screw; 9-beam-splitter G
1The 10-film viewing screen; The 11-mirror M
1The 12-mirror M
2
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described in further detail.
Embodiment:As shown in Figure 1, the special-purpose LASER Light Source of a kind of Michelson interferometer comprises light shell outer cover 1 and for generation of the laser tube of point-like expansion light source, laser tube is installed on the inside of light shell outer cover 1 one ends, also comprises slidingtype collimation lens focalizer 3 collimating mirrors 6
,Slidingtype collimation lens focalizer 3 is socketed in outside the other end of light shell outer cover 1, and can horizontally slip along light shell outer cover 1, collimating mirror 6 is fixedly mounted on slidingtype collimation lens focalizer 3 away from an end of laser tube, is used for the laser that laser tube sends is collimated or expands; Also be provided with on the light shell outer cover 1 for the connection bracket 2 that links to each other with Michelson interferometer.
Light shell outer cover 1 can be made detachable, also can be made of one formula, preferably adopt following structure: light shell outer cover 1 is for cylindric, and consisted of by left housing department and right casing section, left housing department and right casing section are the integral type structure, wherein the internal diameter of right casing section is identical with the internal diameter of left housing department, the external diameter of right casing section is less than the external diameter of left housing department, the be connected external diameter of part of slidingtype collimation lens focalizer 3 and right casing section is identical with the external diameter of left housing department, slidingtype collimation lens focalizer 3 and the right casing section external diameter of internal diameter partly greater than right casing section that be connected.The be connected internal diameter of part of slidingtype collimation lens focalizer 3 and right casing section should be the external diameter that is slightly larger than right casing section, thereby so that collimation lens focalizer 3 can make things convenient for, horizontally slip in right casing section reposefully.
For convenient slidingtype collimation lens focalizer 3 is positioned, improve measurement accuracy, can also comprise the locating device for positioning sliding type collimation lens focalizer 3 in the technique scheme.This locating device can adopt location, the locking device that conveniently slidingtype collimation lens focalizer 3 is positioned arbitrarily in the prior art, preferably adopts following structure: locating device comprises register pin 5 and is arranged on the slidingtype collimation lens focalizer 3 outside chutes 4 that are used in conjunction with register pin 5.
The principle of work of the special-purpose LASER Light Source of Michelson interferometer of the present invention is:
When being moved to the left the interior focus that slidingtype collimation lens focalizer 3 makes collimating mirror 6 and overlapping with the point-like expansion light source that laser tube sends, will produce the laser beam through collimation in the collimating mirror 6; The slidingtype collimation lens focalizer 3 that moves right makes the interior focus of collimating mirror 6 be in the right side of the point-like expansion light source that laser tube sends, laser after in the collimating mirror 6 generation being expanded, and the relative distance between interior focus that can be by changing collimating mirror 6 and the pointolite that laser tube sends changes angle of divergence size.
Referring to Fig. 2, by connection bracket 2 and lock-screw 8 LASER Light Source 7 of the present invention is fixedly connected on the Michelson interferometer, and makes axis and the beam-splitter G of LASER Light Source 7 of the present invention
19 one-tenth 45
0Angle; First the slidingtype collimation lens focalizer 3 on the LASER Light Source 7 of the present invention is pushed to the left side during adjusting, make it produce the laser beam of process collimation, push slidingtype collimation lens focalizer 3 to right side again after adjusting Michelson interferometer, make it produce the laser of expansion, can see clearly Michaelson Interferometer fringes at film viewing screen 10, thereby and can change the brightness of interference fringe so that observe and measure according to the strong and weak angle of divergence that changes light of ambient light.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. the special-purpose LASER Light Source of a Michelson interferometer, comprise light shell outer cover (1) and for generation of the laser tube of point-like expansion light source, described laser tube is installed on the inside of light shell outer cover (1) one end, it is characterized in that: also comprise slidingtype collimation lens focalizer (3) and collimating mirror (6), described slidingtype collimation lens focalizer (3) is socketed in outside the other end of light shell outer cover (1), and can horizontally slip along light shell outer cover (1), described collimating mirror (6) is fixedly mounted on slidingtype collimation lens focalizer (3) away from an end of laser tube, is used for the laser that laser tube sends is collimated or expands; Also be provided with for the connection bracket that links to each other with Michelson interferometer (2) on the described light shell outer cover (1).
2. the special-purpose LASER Light Source of Michelson interferometer as claimed in claim 1, it is characterized in that: described light shell outer cover (1) is for cylindric, and consisted of by left housing department and right casing section, described left housing department and right casing section are the integral type structure, wherein the internal diameter of right casing section is identical with the internal diameter of left housing department, the external diameter of right casing section is less than the external diameter of left housing department, the be connected external diameter of part of slidingtype collimation lens focalizer (3) and right casing section is identical with the external diameter of left housing department, slidingtype collimation lens focalizer (3) and the right casing section external diameter of internal diameter partly greater than right casing section that be connected.
3. the special-purpose LASER Light Source of Michelson interferometer as claimed in claim 1 or 2 is characterized in that: also comprise the locating device for positioning sliding type collimation lens focalizer (3).
4. the special-purpose LASER Light Source of Michelson interferometer as claimed in claim 3, it is characterized in that: described locating device comprises register pin (5) and is arranged on the chute (4) that slidingtype collimation lens focalizer (3) is outside and register pin is used in conjunction with.
5. the special-purpose LASER Light Source of Michelson interferometer as claimed in claim 3, it is characterized in that: described laser tube is semiconductor laser tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210446038.2A CN102928951B (en) | 2012-11-09 | 2012-11-09 | Laser light source special for michelson interferometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210446038.2A CN102928951B (en) | 2012-11-09 | 2012-11-09 | Laser light source special for michelson interferometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102928951A true CN102928951A (en) | 2013-02-13 |
| CN102928951B CN102928951B (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210446038.2A Expired - Fee Related CN102928951B (en) | 2012-11-09 | 2012-11-09 | Laser light source special for michelson interferometer |
Country Status (1)
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|---|---|
| CN (1) | CN102928951B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501796A (en) * | 2019-08-21 | 2019-11-26 | 深圳市德沃先进自动化有限公司 | Compact continuously adjusts a times focal optical device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08146352A (en) * | 1994-11-16 | 1996-06-07 | Canon Inc | Light source device |
| JPH09223849A (en) * | 1996-02-15 | 1997-08-26 | Canon Inc | Emitting optical device |
| US20060268423A1 (en) * | 2005-05-25 | 2006-11-30 | Ho David G | Focusable laser collimator |
| CN201196695Y (en) * | 2008-05-15 | 2009-02-18 | 西安众为科技发展有限公司 | Optical focusing structure used for laser collimation |
| CN201425656Y (en) * | 2009-05-22 | 2010-03-17 | 深圳市大族激光科技股份有限公司 | Collimation head device |
| CN201758240U (en) * | 2010-05-21 | 2011-03-09 | 太原理工大学 | Semiconductor laser collimation beam expander |
| CN202522753U (en) * | 2012-04-29 | 2012-11-07 | 西安华科光电有限公司 | Optical path focusing device and electric focusing laser riflescope comprising same |
| CN202870374U (en) * | 2012-11-09 | 2013-04-10 | 重庆理工大学 | Special laser light source for michelson interferometers |
-
2012
- 2012-11-09 CN CN201210446038.2A patent/CN102928951B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08146352A (en) * | 1994-11-16 | 1996-06-07 | Canon Inc | Light source device |
| JPH09223849A (en) * | 1996-02-15 | 1997-08-26 | Canon Inc | Emitting optical device |
| US20060268423A1 (en) * | 2005-05-25 | 2006-11-30 | Ho David G | Focusable laser collimator |
| CN201196695Y (en) * | 2008-05-15 | 2009-02-18 | 西安众为科技发展有限公司 | Optical focusing structure used for laser collimation |
| CN201425656Y (en) * | 2009-05-22 | 2010-03-17 | 深圳市大族激光科技股份有限公司 | Collimation head device |
| CN201758240U (en) * | 2010-05-21 | 2011-03-09 | 太原理工大学 | Semiconductor laser collimation beam expander |
| CN202522753U (en) * | 2012-04-29 | 2012-11-07 | 西安华科光电有限公司 | Optical path focusing device and electric focusing laser riflescope comprising same |
| CN202870374U (en) * | 2012-11-09 | 2013-04-10 | 重庆理工大学 | Special laser light source for michelson interferometers |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501796A (en) * | 2019-08-21 | 2019-11-26 | 深圳市德沃先进自动化有限公司 | Compact continuously adjusts a times focal optical device |
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| CN102928951B (en) | 2015-07-08 |
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Granted publication date: 20150708 Termination date: 20161109 |