CN203817623U - Polarization state conversion device for laser beams - Google Patents
Polarization state conversion device for laser beams Download PDFInfo
- Publication number
- CN203817623U CN203817623U CN201420162004.5U CN201420162004U CN203817623U CN 203817623 U CN203817623 U CN 203817623U CN 201420162004 U CN201420162004 U CN 201420162004U CN 203817623 U CN203817623 U CN 203817623U
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- Prior art keywords
- lens barrel
- polarization state
- mirror holder
- band light
- fine setting
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- 230000010287 polarization Effects 0.000 title claims abstract description 48
- 238000006243 chemical reaction Methods 0.000 title abstract description 17
- 230000003287 optical effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000003825 pressing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003698 laser cutting Methods 0.000 description 2
- 238000003913 materials processing Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010330 laser marking Methods 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Abstract
The utility model relates to the field of optical instruments, particularly to a polarization state conversion device for laser beams. The device at least comprises one fine adjustment reflection structure, wherein the fine adjustment reflection structure comprises a lens barrel and a lens bracket, the lens barrel is used for installing a reflection lens, the lens bracket is used for fixing the angle of the lens barrel, the lens barrel is fixed on the lens bracket through an adjusting mechanism, and an adjustable gap exists between the lens barrel and the lens bracket; the lens bracket is provided with a light path passage through which the laser beams pass. The device at least comprises one fine adjustment reflection structure, and conversion of the laser beams among horizontal polarization, vertical polarization and +/-45-degree polarized light is realized; the device is simple in structure, low in production cost, stable in mechanical performance and simple and easy in angle adjustment implementation method.
Description
Technical field
The utility model relates to optical instrument field, is specifically related to a kind of band light polarization state of laser beam.
Background technology
Fast development along with laser technology, Laser Processing more and more becomes a kind of processing mode of main flow, and be accompanied by the harsh processing request that materials processing, Excimer lithography, medical and beauty treatment, instrument and sensor market constantly propose, to Laser Processing, provide space and the environment of growing up.
Laser equipment for materials processing mainly contains laser cutting, laser drill and laser marking etc., to these equipment machining beams qualities, is generally to have certain requirements.For example, for laser cutting device, requiring the polarization state of cutting light beam is circular polarization state, is unlikely to like this to have influence on cutting effect because of different cut direction.In addition, for high-power cutting and laser drill, the retroreflection phenomenon of laser is commonplace, if do not isolate these back reflected lasers, will cause that laser output power is unstable, the serious consequence such as output beam quality variation and laser instrument shortening in service life.
For fear of above-mentioned adverse effect, the polarization state of the multiple conversions light beam that generally makes in all sorts of ways in the outside optical system of equipment.The polarization state of Laser Output Beam is generally horizontal polarization, but the design of light path outside and some optics likely can use in using ± 45 ° of polarised lights and orthogonal polarized light, therefore need to horizontal polarization, vertical polarization and ± change between 45 ° of polarised lights.Use in theory half-wave plate just can arbitrarily change.But use that half-wave plate often exists that use cost is high, environment for use require harsh, need water-cooled measure, the shortcoming such as easy burn-out in high power situation.
Utility model content
The technical problems to be solved in the utility model is, for the above-mentioned defect of prior art, provides a kind of band light polarization state of laser beam, and the cost that overcomes existing band light polarization state is high, use the shortcomings such as complicated.
The utility model solves the technical scheme that its technical problem adopts: the band light polarization state that a kind of laser beam is provided, described device at least comprises a fine setting catoptric arrangement, this fine setting catoptric arrangement comprises for the lens barrel of reflecting optics being installed and for the mirror holder of fixed lens barrel angle, this lens barrel is fixed on mirror holder by governor motion, comprises an adjustable clearance between this lens barrel and mirror holder; Described mirror holder is provided with for by the path channels of laser beam.
Wherein, preferred version is: described mirror holder comprises inclined-plane and bottom surface, is provided with an angle of inclination between this inclined-plane and bottom surface; Described lens barrel is arranged on this inclined-plane.
Wherein, preferred version is: described angle of inclination is 22.5 °.
Wherein, preferred version is: described angle of inclination is 45 °.
Wherein, preferred version is: described fine setting catoptric arrangement is two, and the mirror holder of these two fine setting catoptric arrangements closely connects mutually.
Wherein, preferred version is: described two fine setting catoptric arrangements are that two bottom surfaces by mirror holder closely connect, after the path channels correspondence of described mirror holder arranges and be communicated with
Wherein, preferred version is: described bottom surface is provided with fixed mechanism.
Wherein, preferred version is: described governor motion comprises that at least one is arranged in the fixture of lens barrel.
Wherein, preferred version is: described fixture comprises the first fixture, between this first fixture and lens barrel, is provided with stage clip.
The beneficial effects of the utility model are, compared with prior art, the utility model is by the band light polarization state of a kind of laser beam of design, this device at least comprises a fine setting catoptric arrangement, realize laser beam horizontal polarization, vertical polarization and ± change between 45 ° of polarised lights; This apparatus structure is simple, production cost is low, and the implementation of stable mechanical property, angular adjustment is simple.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the schematic diagram of the utility model band light polarization state combining structure one;
Fig. 2 is the schematic diagram of the utility model band light polarization state combining structure two;
Fig. 3 is the schematic diagram of the utility model band light polarization state combining structure three;
Fig. 4 a is the Facad structure schematic diagram of the utility model the first reflector mount;
Fig. 4 b is the structure schematic diagram of the utility model the first reflector mount;
Fig. 4 c is the Facad structure schematic diagram of the utility model the second reflector mount;
Fig. 4 d is the structure schematic diagram of the utility model the second reflector mount;
Fig. 5 is the structural representation of the utility model fine setting catoptric arrangement;
Fig. 6 is the structural representation of the utility model lens barrel.
The specific embodiment
Now by reference to the accompanying drawings, preferred embodiment of the present utility model is elaborated.
A kind of preferred embodiment of band light polarization state is provided as Figure 1-4.
A kind of band light polarization state of laser beam, described device at least comprises a fine setting catoptric arrangement, this fine setting catoptric arrangement comprises for the lens barrel 1 of reflecting optics being installed and for the mirror holder 2 of lens barrel 1 angle is set, this lens barrel 1 is connected with mirror holder 2 by governor motion, and 2 of this lens barrel 1 and mirror holders comprise an adjustable clearance.
Further, mirror holder 2 comprises inclined-plane and bottom surface, between this inclined-plane and bottom surface, be provided with an angle of inclination, described lens barrel 1 is arranged on this inclined-plane, and this mirror holder 2 comprises for the path channels 23 by laser beam, for connecting the fixed mechanism 24 of two mirror holder 2 bottom surfaces and for the installing hole 25 of lens barrel 1 is installed.Wherein, mirror holder 2 comprises the mirror holder of two kinds of embodiments, and the angle of inclination of its a kind of mirror holder is 22.5 °, is the first reflector mount 21; The angle of inclination of another kind of mirror holder is 45 °, is that the second reflector mount 22, the second reflector mounts 22 are also provided with for by the logical light groove 26 of laser beam, and this logical light groove 26 is located at the dual-side of bottom surface.Wherein, mirror holder 2 also comprises side, and this side is provided with the light path gateway of path channels 23.
The band light polarization state of the utility model embodiment comprises two fine setting catoptric arrangements, and the mirror holder 2 of these two fine setting catoptric arrangements closely connects mutually, and more specifically, two fine setting catoptric arrangements are that two bottom surfaces by mirror holder 2 closely connect.Two described fine setting catoptric arrangements are respectively that the first fine setting catoptric arrangement 12 and the second fine setting catoptric arrangement 13, the first fine setting catoptric arrangements 12 comprise that lens barrel 1 and the first reflector mount 21, the second fine setting catoptric arrangements 13 comprise lens barrel 1 and the second reflector mount 22; Wherein, the first fine setting catoptric arrangement 12 carries out 45 ° of reflections by light beam 14, and the second fine setting catoptric arrangement 13 carries out 90 ° of reflections by light beam 14.
According to the band light polarization state of the present embodiment, its combination by two fine tuning structures realizes the conversion of three kinds of light paths:
Combining structure one with reference to figure 1, the conversion equipment being formed by two second fine setting catoptric arrangements 13, this conversion equipment by the light beam 14 of introducing through twice 90 ° of reflections, the additional phase error that makes it is pi/2, and the horizontal polarization state that can realize laser arrives the conversion of vertical polarization state and the conversion that vertical polarization state arrives horizontal polarization state.
Combining structure two with reference to figure 2, the conversion equipment being formed by the first fine setting catoptric arrangement 12 and the second fine setting catoptric arrangement 13, more specifically, the light path gateway of the second fine setting catoptric arrangement 13 is the front-lefts in the light path gateway of the first fine setting catoptric arrangement 12.This conversion equipment is by the light beam 14 of introducing through 45 ° of reflections and 90 ° of reflections, and the additional phase error that makes it is π/4, can realize the horizontal polarization state of laser to the conversion of-45 ° of polarization states and the conversion of vertical polarization state to 45 ° polarization state.
Combining structure three with reference to figure 3, the conversion equipment being formed by the first fine setting catoptric arrangement 12 and the second fine setting catoptric arrangement 13, more specifically, the light path gateway of the second fine setting catoptric arrangement 13 is the front-rights in the light path gateway of the first fine setting catoptric arrangement 12.This conversion equipment is by the light beam 14 of introducing through 45 ° of reflections and 90 ° of reflections, and the additional phase error that makes it is-π/4, can realize the conversion of horizontal polarization state to 45 ° polarization state of laser and vertical polarization state to the conversion of-45 ° of polarization states.
Wherein, the logical light groove 26 of the light path gateway of the first reflector mount 21 and the second reflector mount 22 coordinates, and prevents that light beam 14 is directly mapped on mirror holder 2.
Below concrete laser beam polarization converted shown in form:
Fixed mechanism 24 in the present embodiment, comprises being arranged in mirror holder 2 and perpendicular to the dead slot of bottom surface, perpendicular to the thread groove of bottom surface and screw for two mirror holders 2 are fixedly connected with.What wherein the first reflector mount 21 arranged is thread groove, what the second reflector mount 22 arranged is dead slot or thread groove, two mirror holders 2 are fixedly time: the mirror holder 2 that will have the mirror holder 2 of thread groove and have a dead slot merges, thread groove is corresponding with dead slot, again screw is passed to dead slot and is fixed in thread groove, wherein path channels 23 correspondences of mirror holder 2 are also communicated with after arranging.
Shown in Fig. 5 and Fig. 6, provide a kind of preferred embodiment of finely tuning catoptric arrangement.
Fine setting catoptric arrangement comprises for the lens barrel 1 of reflecting optics being installed and for the mirror holder 2 of lens barrel 1 angle is set, this lens barrel 1 is connected with mirror holder 2 by governor motion, governor motion comprises that at least one is arranged in the first fixture 3 of lens barrel 1, this first fixture 3 is provided with stage clip 4, on lens barrel 1, be at least provided with second fixture 5, in lens barrel 1, be provided with a backing plate 10, 1 of this backing plate 10 and lens barrel are at least provided with a pressing plate 6, 1 of this pressing plate 6 and lens barrel are at least provided with the 3rd fixture 7 and the axis of guide 9, between the 3rd fixture 7 and the axis of guide 9, be provided with spring 8, on lens barrel 1, be also provided with O shape circle 11.
Further, the first fixture 3 is screws, and stage clip 4 is high-strength die stage clips, and this first fixture 3 is fixedly connected with lens barrel 1 by stage clip 4 with mirror holder 2, and this first fixture 3 is provided with two; The second fixture 5 is that screw is tightly locked in pommel, this second fixture 5 and mirror holder 2 butts, and this second fixture 5 is provided with three; Backing plate 10 is fixedly connected with reflecting optics, and backing plate 10 is for fixing and protection reflex reflector lens; This pressing plate 6 is provided with two, and described backing plate 10 is fixed on to lens barrel 1, and this pressing plate 6 is connected and is connected and fixed with lens barrel 1 by the 3rd fixture 7 and the axis of guide 9, and spring 8 is located on the axis of guide 9, and spring 8 is realized the axis of guide 9 and is connected with the precision of lens barrel 1.Wherein, the first fixture 3 is fixedly connected with mirror holder 2 by installing hole 25, and this installing hole 25 is thread groove.
O shape circle 11 in the utility model, be provided in a side of on lens barrel 1, when the angle fine setting of carrying out this fine setting catoptric arrangement, need finely tune the second fixture 5 with instrument and realize angle fine adjustment function, due to the energy of stage clip 4 is very large and action direction in the normal orientation of reflecting optics, and under the effect of O shape circle 11, realized the interference fit of mirror holder 2 and lens barrel 1; By O shape circle 11, fix the lens barrel 1 of clamping reflecting optics and the relative position between mirror holder 2 simultaneously.
The utility model provides a kind of assembling mode of finely tuning catoptric arrangement: during assembling, stage clip 4 is set on the first fixture 3, and then the mode to be threaded, by the first fixture 3, lens barrel 1 and mirror holder 2 are assembled together, carrying out screw thread tightens again, tighten in the process of the first fixture 3, must not guarantee that the front end face of this first fixture 3 and the end face of mirror holder 2 are in same level, then, sequentially tighten three the second fixtures 5, and make to maintain certain adjusting gap between lens barrel 1 and mirror holder 2, this regulates gap is approximately that 5mm is wide.Further, by the 3rd fixture 7 and the axis of guide 9, be connected and the compression of spring 8, realize the accurate matched in clearance between the axis of guide 9 and lens barrel 1, and the energy of the spring in compressive state 8 is passed to pressing plate 6 by the axis of guide, then pass to backing plate 10, under the effect of backing plate 10, realized the clamping of reflecting optics.
As described above, be only the utility model most preferred embodiment, and not for limiting scope of the present utility model, all equivalences of doing according to the utility model claim change or modify, and are all the utility model and contain.
Claims (9)
1. the band light polarization state of a laser beam, it is characterized in that: described device at least comprises a fine setting catoptric arrangement, this fine setting catoptric arrangement comprises for the lens barrel of reflecting optics being installed and for the mirror holder of fixed lens barrel angle, this lens barrel is fixed on mirror holder by governor motion, comprises an adjustable clearance between this lens barrel and mirror holder; Described mirror holder is provided with for by the path channels of laser beam.
2. band light polarization state according to claim 1, is characterized in that: described mirror holder comprises inclined-plane and bottom surface, is provided with an angle of inclination between this inclined-plane and bottom surface; Described lens barrel is arranged on this inclined-plane.
3. band light polarization state according to claim 2, is characterized in that: described angle of inclination is 22.5 °.
4. band light polarization state according to claim 2, is characterized in that: described angle of inclination is 45 °.
5. according to the band light polarization state described in claim 3 or 4, it is characterized in that: described fine setting catoptric arrangement is two, the mirror holder of these two fine setting catoptric arrangements closely connects mutually.
6. band light polarization state according to claim 5, is characterized in that: two described fine setting catoptric arrangements are that two bottom surfaces by mirror holder closely connect, after the path channels correspondence of described mirror holder arranges and be communicated with.
7. band light polarization state according to claim 2, is characterized in that: described bottom surface is provided with fixed mechanism.
8. band light polarization state according to claim 1, is characterized in that: described governor motion comprises that at least one is arranged in the fixture of lens barrel.
9. band light polarization state claimed in claim 8, is characterized in that: described fixture comprises the first fixture, between this first fixture and lens barrel, is provided with stage clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420162004.5U CN203817623U (en) | 2014-04-03 | 2014-04-03 | Polarization state conversion device for laser beams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420162004.5U CN203817623U (en) | 2014-04-03 | 2014-04-03 | Polarization state conversion device for laser beams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203817623U true CN203817623U (en) | 2014-09-10 |
Family
ID=51473166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420162004.5U Expired - Lifetime CN203817623U (en) | 2014-04-03 | 2014-04-03 | Polarization state conversion device for laser beams |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203817623U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106695132B (en) * | 2016-12-27 | 2018-09-21 | 大族激光科技产业集团股份有限公司 | Laser head assembly |
-
2014
- 2014-04-03 CN CN201420162004.5U patent/CN203817623U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106695132B (en) * | 2016-12-27 | 2018-09-21 | 大族激光科技产业集团股份有限公司 | Laser head assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 No. 9 West West Road, Nanshan District hi tech park, Shenzhen, Guangdong Co-patentee after: HAN'S CNC SCIENCE AND TECHNOLOGY Co.,Ltd. Patentee after: HAN'S LASER TECHNOLOGY INDUSTRY GROUP Co.,Ltd. Address before: 518000 No. 9 West West Road, Nanshan District hi tech park, Shenzhen, Guangdong Co-patentee before: HAN'S CNC SCIENCE AND TECHNOLOGY Co.,Ltd. Patentee before: Han's Laser Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200702 Address after: 518000 workshop 5 / F, 1 / 2 / F, 14 / F, 17 / F, antuoshan hi tech Industrial Park, Xinsha Road, Shajing street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: HAN'S CNC SCIENCE AND TECHNOLOGY Co.,Ltd. Address before: 518000 No. 9 West West Road, Nanshan District hi tech park, Shenzhen, Guangdong Co-patentee before: HAN'S CNC SCIENCE AND TECHNOLOGY Co.,Ltd. Patentee before: HAN'S LASER TECHNOLOGY INDUSTRY GROUP Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 5 / F, 1 / 2 / F, 14 / F, 17 / F, No.3 Factory building, antuoshan hi tech Industrial Park, Xinsha Road, Shajing street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Han's CNC Technology Co.,Ltd. Address before: 518000 5 / F, 1 / 2 / F, 14 / F, 17 / F, No.3 Factory building, antuoshan hi tech Industrial Park, Xinsha Road, Shajing street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: HAN'S CNC SCIENCE AND TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |