CN203241622U - Ribbon beam generation device - Google Patents
Ribbon beam generation device Download PDFInfo
- Publication number
- CN203241622U CN203241622U CN 201320141622 CN201320141622U CN203241622U CN 203241622 U CN203241622 U CN 203241622U CN 201320141622 CN201320141622 CN 201320141622 CN 201320141622 U CN201320141622 U CN 201320141622U CN 203241622 U CN203241622 U CN 203241622U
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- CN
- China
- Prior art keywords
- cylindrical mirror
- ribbon beam
- generation device
- beam generation
- collimation lens
- Prior art date
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Abstract
The utility model provides a ribbon beam generation device. The ribbon beam generation device comprises a laser device, a first cylindrical mirror, a second cylindrical mirror and a collimation lens, wherein the generatrices of the first cylindrical mirror and the second cylindrical mirror are mutually vertical, and the conjugate distances of the first cylindrical mirror and the second cylindrical mirror are equal. The device is capable of shaping approximately circular light spots emitted by the laser device into a ribbon beam, and the ribbon beam has the characteristics of wavefront collimation and uniform energy distribution. The ribbon beam generation device is simple in structure, high in energy utilization rate, and capable of being applied to the fields of internal defect detection for optical components, and the like.
Description
Technical field
The utility model relates to the applied optics field, is specifically related to a kind of ribbon beam generation device.
Background technology
The defective of optical element is one of principal element that causes optical element laser damage.How effectively detecting the inherent vice of optical element, also is the underlying issue that must solve in the optics secondary industry.The inherent vice of optical element does not also have ripe detection method and the checkout equipment of moulding at present.Some researchists have carried out preliminary research to the detection of internal defect of optical element, the main inherent vice that adopts the method measurement optical element of laser scanning, the illuminating bundle that adopts is banded collimation uniform beam, the hot spot rectangular in shape of namely throwing light on, a length of side is much larger than another length of side.The easiest method of expecting is to make the slit of a correspondence, obtain ribbon beam through behind the slit after illuminating bundle expands, but the capacity usage ratio of the method is too low.In order to improve capacity usage ratio, have the scholar once to adopt the method for optical grating diffraction to obtain ribbon beam, but the light beam behind the optical grating diffraction normally disperse or assemble, when being used for the scanning survey internal defect of optical element, can have a negative impact to accuracy of detection.Internal defect of optical element detects required ribbon beam, require the approximate collimation of its wavefront, energy distribution even, and higher capacity usage ratio is arranged, existing method and the device that produces ribbon beam can not satisfy the requirement that internal defect of optical element detects effectively.
The utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of ribbon beam generation device, but the ribbon beam that this device produce power is evenly distributed, wavefront collimates, capacity usage ratio is high can satisfy the requirement that internal defect of optical element detects.
The technical scheme that the utility model patent adopts is: the ribbon beam generation device comprises laser instrument, the first cylindrical mirror, the second cylindrical mirror and collimation lens; Wherein the bus of the first cylindrical mirror and the second cylindrical mirror is orthogonal, and conjugate distance equates.The spot shaping of the sub-circular that this device can send laser instrument becomes wavefront collimation, the uniform ribbon beam of energy distribution.Described ribbon beam generation device is simple in structure, and capacity usage ratio is high, may be used on the fields such as internal defect of optical element detection.
Compare with grating Diffraction Method with traditional slit method, the ribbon beam that device that the utility model provides produces have energy distribution evenly, wavefront collimation, capacity usage ratio advantages of higher.
Description of drawings
Fig. 1 is the synoptic diagram of the embodiment of ribbon beam generation device of the present utility model;
Fig. 2 is that ribbon beam generation device of the present utility model is in the floor map of yz direction;
Fig. 3 is that ribbon beam generation device of the present utility model is in the floor map of xz direction;
Among the figure: 1 is laser instrument, and 2 is the first cylindrical mirror, and 3 is the second cylindrical mirror, and 4 is collimation lens.
Embodiment
Shown in Figure 1 is the synoptic diagram of the embodiment of ribbon beam generation device of the present utility model.The beam shaping system that this device comprises LASER Light Source 1 and is arranged at this LASER Light Source light direction.Described beam shaping system comprises the first cylindrical mirror 2, the second cylindrical mirror 3 and the collimation lens 4 that sets gradually along same optical axis (z axle).The first cylindrical mirror 2 is mutual vertical with the second cylindrical mirror 3 buses and conjugate distance is equal, and the front focus of described collimation lens 4 overlaps with the back focus of described the second cylindrical mirror 3.The light that laser instrument 1 sends is by described the first cylindrical mirror 2 and 3 incidents of the second cylindrical mirror, and by described collimation lens 4 outgoing.
Shown in Figure 2 is the floor map of Fig. 1 on the yz direction.If the light beam that laser instrument 1 sends is b at the window size of y direction, the first cylindrical mirror 2 with described light beam at the y direction focusing to F point (this moment the second cylindrical mirror 3 be flat-panel component in the equivalence of y direction), then collimated outgoing by collimation lens 4.If the first cylindrical mirror 2 is f at the focal length of y direction
2, the focal length of collimation lens 4 is f
4, then the outgoing collimated light beam is bf at the beamwidth of y direction
4/ f
2
Shown in Figure 3 is the floor map of Fig. 1 on the xz direction.If the light beam that laser instrument 1 sends is a at the window size of x direction, the first cylindrical mirror 2 is flat-panel component in the equivalence of x direction, the second cylindrical mirror 3 with light beam at the x direction focusing to the F point; Then by collimation lens 4 collimation outgoing.If the second cylindrical mirror 3 is f at the focal length of x direction
4, then the outgoing collimated light beam is af at the beamwidth of x direction
4/ f
3
Therefore, described the first cylindrical mirror 2 and the second cylindrical mirror 3 focus on the F point with whole light beam.The front focus of collimation lens 4 overlaps with the F point, can obtain the collimated light beam that energy even distributes after focusing on the beam collimation of focal point F by this collimation lens 4, and the hot spot of its formation is respectively af in the size of x and y direction
4/ f
3And bf
4/ f
2Focal distance f by appropriate design the first cylindrical mirror 2, the second cylindrical mirror 3, collimation lens 4
2, f
3And f
4, just can obtain the ribbon beam of required size.With the plated surface anti-reflection film of the first cylindrical mirror 2, the second cylindrical mirror 3 and collimation lens 4, just can realize that the capacity usage ratio of beam shaping system is greater than 90%.
In the present embodiment, the employing wavelength is that 532nm, power are the diode pumped solid state laser of 400mW.The light beam window that laser instrument 1 sends is a=2mm and b=2mm; The focal distance f of the first cylindrical mirror 2
2=25mm, the focal distance f of the second cylindrical mirror 3
3=5mm, the focal distance f of collimation lens 4
4=50mm, the banded collimated light beam of outgoing is respectively 4mm and 20mm in the size of x and y direction after the shaping.
Claims (1)
1. a ribbon beam generation device is characterized in that, comprises laser instrument, the first cylindrical mirror, the second cylindrical mirror and collimation lens; Wherein the bus of the first cylindrical mirror and the second cylindrical mirror is orthogonal, and conjugate distance equates; The back focus of the first cylindrical mirror and the second cylindrical mirror overlaps with the front focus of collimation lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320141622 CN203241622U (en) | 2013-03-15 | 2013-03-15 | Ribbon beam generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320141622 CN203241622U (en) | 2013-03-15 | 2013-03-15 | Ribbon beam generation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203241622U true CN203241622U (en) | 2013-10-16 |
Family
ID=49318903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320141622 Expired - Fee Related CN203241622U (en) | 2013-03-15 | 2013-03-15 | Ribbon beam generation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203241622U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971672A (en) * | 2014-04-29 | 2014-08-06 | 浙江大学 | Underwater laser sound source with control directivity and control method thereof |
| CN110416872A (en) * | 2019-07-31 | 2019-11-05 | 天津大学 | Radian and the tunable arc beam delivery system of width |
| WO2020239129A1 (en) * | 2019-05-30 | 2020-12-03 | 西安精英光电技术有限公司 | Combined lens-based line laser homogenization generation apparatus |
-
2013
- 2013-03-15 CN CN 201320141622 patent/CN203241622U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971672A (en) * | 2014-04-29 | 2014-08-06 | 浙江大学 | Underwater laser sound source with control directivity and control method thereof |
| CN103971672B (en) * | 2014-04-29 | 2017-01-04 | 浙江大学 | Control underwater laser sound source and the control method thereof of directivity |
| WO2020239129A1 (en) * | 2019-05-30 | 2020-12-03 | 西安精英光电技术有限公司 | Combined lens-based line laser homogenization generation apparatus |
| US11960097B2 (en) | 2019-05-30 | 2024-04-16 | Elite Optoelectronics Co., Ltd | Combined lenses-based apparatus for line laser uniformity generation |
| CN110416872A (en) * | 2019-07-31 | 2019-11-05 | 天津大学 | Radian and the tunable arc beam delivery system of width |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20140315 |