CN207850920U - A kind of index distribution test device and image acquiring device for GRIN Lens - Google Patents
A kind of index distribution test device and image acquiring device for GRIN Lens Download PDFInfo
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- CN207850920U CN207850920U CN201721734733.3U CN201721734733U CN207850920U CN 207850920 U CN207850920 U CN 207850920U CN 201721734733 U CN201721734733 U CN 201721734733U CN 207850920 U CN207850920 U CN 207850920U
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- index distribution
- beam splitter
- test device
- distribution test
- speculum
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Abstract
The utility model is related to index distribution test device fields, more particularly to a kind of index distribution test device for GRIN Lens, including laser, the first beam splitter, GRIN Lens, the first speculum, phase modulator, the second speculum, the second beam splitter, camera and processor；The laser transmitting laser beam is incident to the first beam splitter and is beamed into two-way light splitting path, first via light splitting path is passed through GRIN Lens, the first speculum and is incident in the second beam splitter successively, second tunnel light splitting path is passed through phase modulator, the second speculum and is incident in the second beam splitter successively, second beam splitter receives the laser beam converged and injection, and camera is imaged in, the processor is according to the index distribution information of image data acquisition GRIN Lens.The index distribution test device can accurately test the index distribution of GRIN Lens, to make quantitative detection and analysis to GRIN Lens by index distribution.
Description
Technical field
The utility model is related to index distribution test device fields, and in particular to a kind of refraction for GRIN Lens
Rate distribution tester and image acquiring device.
Background technology
GRIN Lens (Grin Lens) is also known as gradient variable refractivity lens, refer to its index distribution is radially
The column optical lens of gradual change has focusing and imaging function.GRIN Lens is realized by way of radial gradient index
Light spreads through sex intercourse in the lens interior period, change its length can light regulating modulation period, and then realize identical as lens
The optical device of function.
Since GRIN Lens has end face collimation, coupling and imaging characteristic, in addition its cylindric small and exquisite sShape features,
Can be more convenient to use in a variety of different micro-optics systems, and in integrated optics field such as micro-optics system, doctor
It is had a wide range of applications with equipment such as optical instrument, optics duplicator, facsimile machine, scanners.
And the performance of optical device is inseparable with the rule of its index distribution, therefore, design is a kind of to be used for self-focusing
The problem of index distribution test device and image acquiring device of lens are always those skilled in the art's primary study it
One.
Utility model content
The technical problem to be solved by the present invention is to for the drawbacks described above of the prior art, provide a kind of for certainly
The index distribution test device of condenser lens solves the problems, such as the index distribution that can not test GRIN Lens.
The technical problem to be solved by the present invention is to for the drawbacks described above of the prior art, provide a kind of for certainly
The index distribution image acquisition device of condenser lens, solves the problems, such as the index distribution that can not test GRIN Lens.
To solve the technical problem, the utility model provides a kind of index distribution test dress for GRIN Lens
It sets, the index distribution test device includes the laser for emitting laser beam, the index distribution test device
Further include the first beam splitter being arranged in laser beam path, and along one light splitting path setting GRIN Lens and
First speculum, and along the phase modulator and the second speculum of the setting of another light splitting path, the index distribution
Test device further includes that the second beam splitter that the meet in path is divided in two beams is arranged, and second beam splitter one end, which receives, converges
The laser beam of conjunction, and project laser beam in the other end, the index distribution test device further includes along emergent light
The camera of path setting, and the processor for receiving camera image.
Wherein, preferred version is：The index distribution test device further includes the collimation knot for collimated laser beam
Structure, the collimating structure are arranged between laser and the first beam splitter.
Wherein, preferred version is：The collimating structure includes holder, star tester, the first trim ring, collimating mirror and the second pressure
In internal stent, the star tester is close to be arranged on laser by the first trim ring for circle, the star tester and collimating mirror setting,
The internal stent is additionally provided with an exit end, and the collimating mirror is close to be arranged on exit end by the second trim ring.
Wherein, preferred version is：The index distribution test device further includes gathering for the first of focused laser beam
Focus objective lens, first focusing objective len are arranged between the first speculum and the second beam splitter.
Wherein, preferred version is：The index distribution test device further includes gathering for the second of focused laser beam
Focus objective lens, second focusing objective len are arranged between the second speculum and the second beam splitter.
Wherein, preferred version is：The index distribution test device further include for focused laser beam third it is poly-
Focus objective lens, the tertiary focusing object lens are arranged between the second beam splitter and camera.
Wherein, preferred version is：The index distribution test device further includes bottom plate, first beam splitter, autohemagglutination
Focus lens, the first speculum, the first focusing objective len, phase modulator, the second speculum, the second focusing objective len, the second beam splitting
Device, tertiary focusing object lens and camera are arranged on bottom plate.
Wherein, preferred version is：The index distribution test device further includes being fixed for the first of fixed laser
Structure, the first fixed structure include fixture, fixed link, the first screw and leather packing, the hollow space and laser of the fixture
The shape of device is adapted, and the fixed link is fixed on the both ends of fixture by the first screw, and the leather packing is arranged in fixation
The lower section of bar.
Wherein, preferred version is：The index distribution test device further includes second for fixing the first beam splitter
Fixed structure, second fixed structure include fixed frame, supporting rod and the second screw, the hollow space of the fixed frame and
The shape of one beam splitter is adapted, and the supporting rod Connection Bracket, the supporting rod is fixed by the second screw.
The utility model also provides a kind of index distribution image acquisition device for GRIN Lens, including：Laser
Device, the first beam splitter, GRIN Lens, the first speculum, phase modulator, the second speculum, the second beam splitter and camera；
Wherein, the laser transmitting laser beam is incident to the first beam splitter and is beamed into two-way light splitting path, first via path-splitting
Diameter passes through GRIN Lens, the first speculum and is incident in the second beam splitter successively, and the second tunnel is divided path and passes through phase successively
Position modulation device, the second speculum are simultaneously incident in the second beam splitter, and second beam splitter receives the laser beam converged simultaneously
It projects, and images in camera.
The beneficial effects of the utility model are that compared with prior art, the utility model is a kind of for certainly by designing
The index distribution test device of condenser lens, the index distribution test device can accurately test the folding of GRIN Lens
Rate distribution is penetrated, to make quantitative detection and analysis to GRIN Lens by index distribution；Also, laser beam is being penetrated
It is constantly in same level after going out laser, ensure that the accuracy of test；In addition, the index distribution test device is whole
Sound construction is reliable, is hardly damaged；Meanwhile all parts are provided separately, and are convenient for modular repair, if there is the component of damage, are only needed
Corresponding component is taken out to repair.
Description of the drawings
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing：
Fig. 1 is the schematic diagram of the utility model index distribution test device；
Fig. 2 is the schematic diagram of the utility model collimating structure and first fixed structure；
Fig. 3 is the schematic diagram of the second fixed structure of the utility model；
Fig. 4 is the schematic diagram of the utility model third fixed structure.
Specific implementation mode
In conjunction with attached drawing, elaborate to the preferred embodiment of the utility model.
As shown in Figures 1 to 4, the utility model provides a kind of index distribution test device for GRIN Lens 3
Preferred embodiment.
Specifically, with reference to figure 1, a kind of index distribution test device for GRIN Lens 3, the index distribution
Test device includes the laser 1 for emitting laser beam, and the index distribution test device further includes being arranged in laser
The first beam splitter 21 on beam path, and it is divided the GRIN Lens 3 and the first speculum 51 that path is arranged along one,
And phase modulator 4 and the second speculum 52 along the setting of another light splitting path, the index distribution test device
Further include that the second beam splitter 22 that the meet in path is divided in two beams is set, what the reception of described second beam splitter, 22 one end converged
Laser beam, and project laser beam in the other end, the index distribution test device further includes along emergent light path
The camera 6 of setting, and the processor for receiving 6 image of camera；The index distribution test device further includes for standard
The collimating structure 9 of straight laser beam, the collimating structure 9 are arranged between laser 1 and the first beam splitter 21；The refractive index
Distribution tester further includes the first focusing objective len 71 for focused laser beam, and first focusing objective len 71 setting is the
Between one speculum 51 and the second beam splitter 22；The index distribution test device further includes for focused laser beam
Two focusing objective lens 72, second focusing objective len 72 are arranged between the second speculum 52 and the second beam splitter 22；The refraction
Rate distribution tester further includes the tertiary focusing object lens 72 for focused laser beam, and the setting of tertiary focusing object lens 72 exists
Between second beam splitter 22 and camera 6.
Before detection process starts, as with reference to the object of reference for comparing GRIN Lens 3 in light path, need to the modulator
Initial setting is done, first, takes a GRIN Lens 3 to be used as standard sample, which is fixed, and measures
The index distribution △ n of standard GRIN Lens 3 under the thickness are calculated according to formula for the thickness for going out the GRIN Lens 3
=λ/2t, wherein λ is the wavelength of irradiation light, and t is the thickness of sample, in conjunction with known refractive index of the centre n0, release the self-focusing
The change in optical path length of lens 3 is △ l=△ n × t, is to obtain phase changeBy counted Spatial transmission matrix
It is written in Spatial transmission device, you can to obtain the reference path of the GRIN Lens 3.
In detection process, the laser 1 first is done to phase modulator 4 and launches laser beam to collimating structure 9,
The collimating structure 9 carries out alignment procedure to laser beam, ensures laser beam into collimated light beam, and be incident on the first beam splitter
21 carry out light splitting operation, are divided into vertical twice light splitting path, and it is optical system for testing that one, which is divided path, and another light splitting path is ginseng
Examine light path；The optical system for testing passes through GRIN Lens 3, and is reflected by the first speculum 51, and it is poly- to subsequently enter first
It is focused after focus objective lens 71, enters back into the second beam splitter 22；Phase modulator 4 is passed through in the light splitting path, and passes through the
Two-mirror 52 is reflected, and is focused after subsequently entering the second focusing objective len 72, and the second beam splitter 22 is entered back into；It is described
Optical system for testing and reference path are interfered in the second beam splitter 22, and are projected by one end of the second beam splitter 22, poly- using third
Focus objective lens 72 are focused rear directive camera 6, and send images to processor, and the processor is handled by later image,
Judge the optical path difference of reference path and optical system for testing using interference fringe is formed by, and standard sample is used as according to above-mentioned
GRIN Lens 3 consistency deviation, obtain the index distribution situation map of GRIN Lens 3, so as to pass through folding
It penetrates rate distribution and makes quantitative detection and analysis to GRIN Lens 3.
Wherein, and with reference to figure 2, the collimating structure 9 includes holder 91, star tester 92, the first trim ring 93,94 and of collimating mirror
Second trim ring 95, the collimating structure 9 further include the washer 96 for adjusting 94 position of collimating mirror, the star tester 92 and collimation
Mirror 94 is arranged inside holder 91, and the star tester 92 is close to be arranged on laser 1 by the first trim ring 93, the holder 91
Inside is additionally provided with an exit end, and the collimating mirror 94 is close to be arranged on exit end by the second trim ring 95, and passes through washer 96
Good position is adjusted, when the laser beam is incident on collimating structure 9, through star tester 92, then passes through the collimation of collimating mirror 94
Emit from exit end to outside after effect, and the first beam splitter 21 described in directive.
Further, and with reference to figure 1, the index distribution test device further includes bottom plate 8, first beam splitter
21, GRIN Lens 3, the first speculum 51, the first focusing objective len 71, phase modulator 4, the second speculum 52, second are poly-
Focus objective lens 72, the second beam splitter 22, tertiary focusing object lens 72 and camera 6 are arranged on bottom plate 8, and the bottom plate 8 provides support
Effect, and adjust the height of above-mentioned device so that the laser beam that laser 1 is launched is constantly in same horizontal line.
Further, and with reference to figure 2, the index distribution test device further includes for fixed laser 1
One fixed structure 10, the first fixed structure 10 include fixture 101, fixed link 102, the first screw 103 and leather packing 104, institute
The shape of the hollow space and laser 1 of stating fixture 101 is adapted, and the fixed link 102 is fixed on folder by the first screw 103
The both ends of tool 101, and the leather packing 104 is arranged in the lower section of fixed link 102, provides support and cushioning effect；Described first
Fixed structure 10 be provided with it is multiple, ensure laser 1 be in stationary state.
Still further, and with reference to figure 3, the index distribution test device further includes for fixing the first beam splitter 21
The second fixed structure, second fixed structure include the first fixed frame 111, first support bar 112 and the second screw, it is described
The shape of the hollow space of first fixed frame 111 and the first beam splitter 21 is adapted, and the connection of the first support bar 112 first is solid
Determine frame 111, the first support bar 112 is fixed by the second screw, and is fixed on bottom plate 8, second fixed knot
Structure further includes a cover board 113, and the setting of the cover board 113 is consolidated above the first fixed frame 111, and by third screw
It is fixed；Second screw is M6 screws, and the third screw is M2 screws.
In the present embodiment, and with reference to figure 4, the index distribution test device further includes for stationary mirror
Three fixed structures, the third fixed structure include the second fixed frame 121, second support bar 122 and the 4th screw, and described the
The hollow space of two fixed frames 121 and the shape of speculum are adapted, and the second support bar 122 connects the second fixed frame 121,
The second support bar 122 is fixed by the 4th screw, and is fixed on bottom plate 8.First speculum 51 and second
Speculum 52 is all made of third fixed structure and is fixed.
Above-mentioned first fixed structure 10, the second fixed structure and third fixed structure can also be used for adjusting respective devices
Height, further ensure that the laser beam launched of laser 1 is constantly in same horizontal line, help to detect autohemagglutination
The index distribution of focus lens 3.
Preferably, the laser 1 is He-Ne laser, and the He-Ne laser is that He-Ne gas is housed in quartz ampoule
Body occurs inelastic collision, makes electron transition under the excitation of electronics oscillator, launches the laser light that wavelength is 632.8nm
Beam.
The utility model also provides a kind of index distribution image acquisition device for GRIN Lens 3.
Specifically, described image acquisition device includes：Laser 1, the first beam splitter 21, GRIN Lens 3, first are anti-
Penetrate mirror 51, phase modulator 4, the second speculum 52, the second beam splitter 22 and camera 6；Wherein, the transmitting of the laser 1 swashs
Light light beam is incident to the first beam splitter 21 and is beamed into two-way light splitting path, and the first via is divided path and passes through GRIN Lens successively
3, it the first speculum 51 and is incident in the second beam splitter 22, the second tunnel is divided path and passes through phase modulator 4, second successively
Speculum 52 is simultaneously incident in the second beam splitter 22, the laser beam that the reception of the second beam splitter 22 converges and injection, and at
As in camera 6, the imaging can analyze the index distribution situation for GRIN Lens 3.
In conclusion the above is only the preferred embodiments of the present utility model only, it is not intended to limit the utility model
Protection domain.Any modification made within the spirit and principle of the utility model, equivalent replacement, improve etc., it should all wrap
Containing within the protection scope of the present utility model.
Claims (10)
1. a kind of index distribution test device for GRIN Lens, which is characterized in that including：Laser, the first beam splitting
Device, GRIN Lens, the first speculum, phase modulator, the second speculum, the second beam splitter and camera；Wherein, described to swash
Light device transmitting laser beam is incident to the first beam splitter and is beamed into two-way light splitting path, and the first via is divided path and passes through successively certainly
Condenser lens, the first speculum are simultaneously incident in the second beam splitter, and the second tunnel is divided path and passes through phase modulator, the successively
Two-mirror is simultaneously incident in the second beam splitter, and second beam splitter receives the laser beam converged and injection, and images in
Camera；The index distribution test device further includes the index distribution information according to image data acquisition GRIN Lens
Processor.
2. index distribution test device according to claim 1, it is characterised in that：The index distribution test device
Further include the collimating structure for collimated laser beam, the collimating structure is arranged between laser and the first beam splitter.
3. index distribution test device according to claim 2, it is characterised in that：The collimating structure include holder,
Star tester, the first trim ring, collimating mirror and the second trim ring, the star tester and collimating mirror are arranged in internal stent, the star tester
It is close to be arranged on laser by the first trim ring, the internal stent is additionally provided with an exit end, and the collimating mirror passes through second
Trim ring is close to be arranged on exit end.
4. index distribution test device according to claim 1, it is characterised in that：The index distribution test device
Further include the first focusing objective len for focused laser beam, first focusing objective len is arranged in the first speculum and second point
Between beam device.
5. index distribution test device according to claim 4, it is characterised in that：The index distribution test device
Further include the second focusing objective len for focused laser beam, second focusing objective len is arranged in the second speculum and second point
Between beam device.
6. index distribution test device according to claim 5, it is characterised in that：The index distribution test device
Further include the tertiary focusing object lens for focused laser beam, tertiary focusing object lens setting the second beam splitter and camera it
Between.
7. index distribution test device according to claim 6, it is characterised in that：The index distribution test device
Further include bottom plate, first beam splitter, GRIN Lens, the first speculum, the first focusing objective len, phase modulator,
Two-mirror, the second focusing objective len, the second beam splitter, tertiary focusing object lens and camera are arranged on bottom plate.
8. index distribution test device according to claim 1, it is characterised in that：The index distribution test device
Further include the first fixed structure for fixed laser, the first fixed structure include fixture, fixed link, the first screw and
Leather packing, the hollow space of the fixture and the shape of laser are adapted, and the fixed link is fixed on fixture by the first screw
Both ends, and the leather packing is arranged in the lower section of fixed link.
9. index distribution test device according to claim 8, it is characterised in that：The index distribution test device
Further include the second fixed structure for fixing the first beam splitter, second fixed structure includes fixed frame, supporting rod and
The shape of two screws, the hollow space of the fixed frame and the first beam splitter is adapted, and the supporting rod Connection Bracket is described
Supporting rod is fixed by the second screw.
10. a kind of index distribution image acquisition device for GRIN Lens, which is characterized in that including：Laser, first
Beam splitter, GRIN Lens, the first speculum, phase modulator, the second speculum, the second beam splitter and camera；Wherein, institute
It states laser transmitting laser beam to be incident to the first beam splitter and be beamed into two-way light splitting path, first via light splitting path passes through successively
It crosses GRIN Lens, the first speculum and is incident in the second beam splitter, the second tunnel is divided path and passes through phase-modulator successively
Part, the second speculum are simultaneously incident in the second beam splitter, the laser beam that the second beam splitter reception converges and injection, and at
As in camera.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721734733.3U CN207850920U (en) | 2017-12-13 | 2017-12-13 | A kind of index distribution test device and image acquiring device for GRIN Lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721734733.3U CN207850920U (en) | 2017-12-13 | 2017-12-13 | A kind of index distribution test device and image acquiring device for GRIN Lens |
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| CN207850920U true CN207850920U (en) | 2018-09-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141836A (en) * | 2018-10-31 | 2019-01-04 | 苏州深影光电科技有限公司 | Laser alignment light box test fixture and its test method |
| CN110646168A (en) * | 2019-05-09 | 2020-01-03 | 苏州端景光电仪器有限公司 | Longitudinal spherical aberration measurement method of self-focusing lens |
| CN111397861A (en) * | 2020-04-17 | 2020-07-10 | 复旦大学 | Micro lens detection system and detection method thereof |
| CN113639973A (en) * | 2021-10-15 | 2021-11-12 | 高视科技(苏州)有限公司 | Detection method and system for refractive index distribution of finished product of self-focusing lens |
-
2017
- 2017-12-13 CN CN201721734733.3U patent/CN207850920U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141836A (en) * | 2018-10-31 | 2019-01-04 | 苏州深影光电科技有限公司 | Laser alignment light box test fixture and its test method |
| CN110646168A (en) * | 2019-05-09 | 2020-01-03 | 苏州端景光电仪器有限公司 | Longitudinal spherical aberration measurement method of self-focusing lens |
| CN111397861A (en) * | 2020-04-17 | 2020-07-10 | 复旦大学 | Micro lens detection system and detection method thereof |
| CN111397861B (en) * | 2020-04-17 | 2021-03-30 | 复旦大学 | Micro lens detection system and detection method thereof |
| CN113639973A (en) * | 2021-10-15 | 2021-11-12 | 高视科技(苏州)有限公司 | Detection method and system for refractive index distribution of finished product of self-focusing lens |
| CN113639973B (en) * | 2021-10-15 | 2022-02-08 | 高视科技(苏州)有限公司 | Detection method and system for refractive index distribution of finished product of self-focusing lens |
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