CN214343997U - Beam refraction and expansion device - Google Patents
Beam refraction and expansion device Download PDFInfo
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- CN214343997U CN214343997U CN202022717046.9U CN202022717046U CN214343997U CN 214343997 U CN214343997 U CN 214343997U CN 202022717046 U CN202022717046 U CN 202022717046U CN 214343997 U CN214343997 U CN 214343997U
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- laser
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- expanding
- expander
- refracting
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- 230000003287 optical effect Effects 0.000 claims abstract description 26
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- CPBQJMYROZQQJC-UHFFFAOYSA-N helium neon Chemical group [He].[Ne] CPBQJMYROZQQJC-UHFFFAOYSA-N 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 229910052756 noble gas Inorganic materials 0.000 claims 1
- 230000004438 eyesight Effects 0.000 abstract description 5
- 239000006185 dispersion Substances 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 201000009487 Amblyopia Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model discloses a beam refraction beam expanding device relates to laser vision rehabilitation treatment technical field. The device includes laser instrument, beam expander, first speculum, second mirror and laser window, and the line beam of laser instrument output expands the beam dispersion back through the beam expander, becomes the diverging beam that has fixed divergence angle, then throws and take place the light path and change on the first speculum, and the light speed after the light path changes throws the second mirror once more on, and the light path changes once more, and the laser beam is used at the terminal that output optical power density is less through the laser window at last. The utility model discloses a beam refraction expands beam device passes through the reflection return circuit, can realize the extension of laser light path in less space, outputs the less laser beam for the terminal of optical power density at the laser window. The device can be used for prolonging the length of an optical path in a specific space, and reducing the volume of a product and the using space distance.
Description
Technical Field
The utility model relates to a laser vision rehabilitation field, concretely relates to beam refraction expands beam device.
Background
When the rehabilitation therapy of eyesight is carried out to amblyopia or myopia, the laser therapeutic instrument is a generally adopted medical means, and the effective rehabilitation therapy effect of eyesight can be realized by irradiating the laser which accords with the optical power density to the eyes. In the design of medical laser products, the laser output by the laser is a line beam, and the optical power density is high, so that the eye part is not suitable to be directly irradiated for treatment. Therefore, the spot light spot needs to be expanded into a surface light spot having a predetermined diameter, and the expansion of the spot diameter needs to be achieved by matching the beam expander with an extended optical path length. And the light path is prolonged outside the laser output window of the product, so that the problems of larger volume structure and large occupied space of the product can be caused, and the effective utilization of the product is not facilitated.
SUMMERY OF THE UTILITY MODEL
In order to solve the defect that above-mentioned technique exists, the utility model provides a beam refraction expands beam device, it passes through the reflection return circuit, can realize the extension of laser light path in less space, outputs the less terminal laser beam of optical power density at the laser window.
The utility model discloses realize that the technical scheme that above-mentioned technological effect adopted is:
a beam-refracting beam-expanding apparatus comprising:
a laser for outputting an initial linear laser beam;
the beam expander is used for receiving the direct linear laser beam output by the laser, refracting, expanding and diverging the laser beam and outputting a divergent beam with a divergent angle;
the first reflector is used for receiving the direct divergent light beams output by the beam expander and generating a first reflected light beam on the mirror surface of the first reflector;
the second reflector is used for receiving the first reflected light beam reflected by the first reflector and generating a second reflected light beam with changed emission direction, divergence angle and optical path travel on the mirror surface of the second reflector;
and the laser window is used for outputting the second reflected light beam reflected by the second reflector.
Preferably, in the above-mentioned beam refraction and expansion device, the expansion angle of the beam expander is 2-15 °.
Preferably, in the above-mentioned beam refraction and beam expansion device, the laser is an inert gas laser or a semiconductor laser.
Preferably, in the above-mentioned beam refraction and beam expansion apparatus, the inert gas laser is a helium-neon laser or a carbon dioxide laser.
Preferably, in the above beam refraction and beam expansion device, the first mirror is a laser mirror with an operating wavelength of 632.8nm, and the second mirror is a laser mirror with an operating wavelength of 650 nm.
Preferably, in foretell beam refraction expand beam device, still include upper and lower parallel arrangement, relative distance's lower platform and upper mounting plate about adjustable, down the platform with the regulation of relative distance about carrying out through altitude controller between the upper mounting plate, the laser instrument the beam expander with first speculum is established down on the platform, the second mirror with the laser window is established the upper mounting plate.
Preferably, in the above-mentioned beam refraction and expansion device, the beam expander includes a beam expander mirror.
Preferably, in the above-mentioned light beam refraction and expansion device, the beam expander includes a lens holder having multiple clamping positions and beam expanding lenses having different beam expansion divergence angles and corresponding to the clamping positions one by one, and each beam expanding lens is rotatably disposed in the corresponding clamping position through a damping rotating shaft at an edge thereof.
Preferably, in the above-mentioned beam refraction and expansion device, the beam expansion divergence angles of the beam expander mirrors on the respective screens sequentially increase along the light transmission direction of the initial linear laser beam output by the laser.
Preferably, in the above-mentioned beam refraction and expansion device, along the light transmission direction of the initial linear laser beam output by the laser, the beam expansion divergence angles of the beam expansion mirrors on the screens sequentially increase between 2 ° and 15 °.
The utility model has the advantages that: the utility model discloses a beam refraction expands beam device passes through the reflection return circuit, can realize the extension of laser light path in less space, outputs the less laser beam for the terminal of optical power density at the laser window. The device can be used for prolonging the length of an optical path in a specific space, and reducing the volume of a product and the using space distance.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an embodiment of the present invention;
fig. 4 is a schematic structural view of the lens holder of the present invention.
Detailed Description
For a further understanding of the invention, reference is made to the following description taken in conjunction with the accompanying drawings and specific examples, in which:
in the description of the present application, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.
Referring to fig. 1, as shown in the drawings, an embodiment of the present invention provides a beam refraction and expansion device, which includes: laser 100, beam expander 200, first mirror 300, second mirror 400, and laser window 500. Wherein the laser 100 is configured to output an initial linear laser beam. The beam expander 200 is configured to receive the direct linear laser beam output by the laser 100, refract, expand, and diverge the laser beam, and output a divergent beam having a divergent angle. The first reflector 300 is used for receiving the direct divergent light beam output by the beam expander 200 and generating a first reflected light beam on the mirror surface of the first reflector 300. The second reflecting mirror 400 is used for receiving the first reflected light beam reflected by the first reflecting mirror 300 and generating a second reflected light beam with changed emission direction, divergence angle and optical path travel on the mirror surface of the second reflecting mirror 400. And the optical power density of the second reflected light beam after divergence and the extension of the optical path distance is reduced, thereby meeting the optical power density requirement of the terminal. Laser window 500 is used to output a second reflected beam having a lower optical power density reflected by second mirror 400. The device is used as an internal light path composition structure of a laser vision rehabilitation therapeutic apparatus, the length of a light path can be prolonged in a limited and specific space, the size and the using space distance of a product are reduced, and a laser beam with smaller power density is output at a terminal.
Specifically, in the preferred embodiment of the present invention, the beam expanding divergence angle of the beam expander 200 is 2-15 °. The laser 100 is an inert gas laser or a semiconductor laser. As a preferred embodiment, the inert gas laser may be a helium-neon laser or a carbon dioxide laser. First mirror 300 is a laser mirror having an operating wavelength of 632.8nm, and second mirror 400 is a laser mirror having an operating wavelength of 650 nm.
Further, as shown in fig. 3, in an embodiment of the present invention, the apparatus further includes a lower platform 600 and an upper platform 700, which are disposed in parallel and adjustable in relative distance. Wherein, the relative distance between the lower platform 600 and the upper platform 700 is adjusted by the height adjuster 800. The laser 100, the beam expander 200 and the first reflecting mirror 300 are provided on the lower stage 600, and the second reflecting mirror 400 and the laser window 500 are provided on the upper stage 700. In particular, the height adjuster 800 may be pneumatically, hydraulically or manually adjustable, and may be embodied as a miniature air cylinder, a hydraulic cylinder, or a rack. By the height adjuster 800, the up-down relative distance between the lower stage 600 and the upper stage 700 can be adjusted to increase the optical path distance of the first reflected light beam between the first reflecting mirror 300 and the second reflecting mirror 400.
As a preferred embodiment of the present invention, as shown in fig. 2, the beam expander 200 can be a beam expander 200a with a single fixed beam expansion divergence angle, such as fixed beam expansion divergence angles of 2 °, 5 °, 8 °, 10.5 °, 12.8 °, 15 °, and so on.
As a preferred embodiment of the present invention, as shown in fig. 1 and fig. 4, the beam expander 200 includes a lens base 201 with multiple clamping positions 2011 and beam expanders 200b with different beam expansion divergence angles corresponding to the clamping positions 2011 one to one. Wherein, each beam expander 200b rotationally sets up in the screens 2011 that corresponds through the damping pivot at its edge respectively, when needs a certain one to expand a bundle divergent angle, will have this beam expander that expands a bundle divergent angle and stir the beam expanding position, stir non-beam expanding position with other beam expanders, can expand the beam through this initial linear laser beam that the beam expander that is located beam expanding position sent laser instrument 100 with the beam expanding divergent angle of this requirement and diverge.
In some embodiments, the beam expansion divergence angle of the beam expander mirror 200b on each card 2011 sequentially increases along the light transmission direction of the initial linear laser beam output by the laser 100. Specifically, along the light transmission direction of the initial linear laser beam output by the laser 100, the beam expansion divergence angles of the beam expander 200b on the respective screens 2011 sequentially increase in increments between 2 ° and 15 °.
As a preferred embodiment of the present invention, as shown in fig. 3 and 4, as one set of movable units on the lower platform 600, the laser 100, the beam expander 200 and the first reflecting mirror 300 can maintain the synchronous up-and-down movement adjustment, and as another set of movable units on the upper platform 700, the second reflecting mirror 400 and the laser window 500 can maintain the synchronous up-and-down movement adjustment. Meanwhile, the beam expander 200 is provided with a plurality of switchable beam expanders, and the beam expander 200b with different beam expansion divergence angles can be switched randomly according to the use requirements, so that the use is flexible.
In the embodiment of the present invention, the installation position angles of the first reflector 300 and the second reflector 400 determine the size of the reflection angle thereof, as shown in fig. 1, the typical installation angle is 45 °, the reflection angle is 45 °, that is, the light path is redirected to 90 °. Through multiple reflection by first mirror 300 and second mirror 400, a 180 ° optical path direction transition is finally achieved, i.e. the direction of the initial linear laser beam output by laser 100 is opposite to the direction of the end light output by laser window 500, which meets the end optical power density requirement.
The physical distance between the beam expander 200, the first reflector 300, the second reflector 400 and the laser window 500 is the length of the optical path, and the length of the optical path can be determined by calculating the divergence angle of the laser beam expander and the diameter of the output light spot of the laser window. One to more mirrors may be provided depending on the actual need for the light path to change direction.
As an embodiment of a specific application of the present invention, the laser 100 is a he-ne laser, and the output optical power of the he-ne laser is 5mW, and the wavelength of the initial linear laser beam is 623.8nm, and the initial linear laser beam is input to the beam expander 200 with the working wavelength of 632.8nm and the divergence angle of 3.8 degrees. Then, the diverging light beam after beam expansion and divergence is directly emitted to the first reflecting mirror 300, the distance of the light path between the beam expander 200 and the first reflecting mirror 300 is 100mm, and the light path is redirected by 90 degrees. Then, the first reflected light beam passes through an optical path with a distance of 250mm between the first mirror 300 and the second mirror 400, and is reflected again on the second mirror 400, and the optical path is redirected by 90 degrees. Finally, the second reflected beam is directed from a path of 200mm between second mirror 400 and laser window 500, and out of the end of laser window 500. Through the reflection loop, the total length of the light path is 550mm, a light spot with the diameter of 73mm can be obtained at the laser window 500, and the light path changes the direction of the terminal light by 180 degrees.
To sum up, the utility model discloses a beam refraction beam expanding device passes through the reflection return circuit, can realize the extension of laser light path in less space, outputs the laser beam for the less terminal of optical power density at the laser window. The device can be used for prolonging the length of an optical path in a specific space, and reducing the volume of a product and the using space distance.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather is described in the foregoing embodiments and the description with reference to the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended that all such changes and modifications fall within the scope of the invention as claimed, which is defined by the claims appended hereto and their equivalents.
Claims (10)
1. A beam-refracting beam-expanding apparatus, comprising:
a laser (100) for outputting an initial linear laser beam;
the beam expander (200) is used for receiving the direct linear laser beam output by the laser (100), refracting, expanding and diverging the laser beam, and outputting a divergent beam with a divergence angle;
a first reflector (300) for receiving the direct diverging beam output by the beam expander (200) and generating a first reflected beam on a mirror surface of the first reflector (300);
a second reflecting mirror (400) for receiving the first reflected light beam reflected by the first reflecting mirror (300) and generating a second reflected light beam with changed emission direction, divergence angle and optical path travel on the surface of the second reflecting mirror (400);
a laser window (500) for outputting a second reflected light beam reflected by the second mirror (400).
2. The beam-refracting beam-expanding device according to claim 1, wherein the beam-expanding divergence angle of the beam expander (200) is 2-15 °.
3. The beam-refracting beam-expanding apparatus according to claim 1, wherein the laser (100) is a noble gas laser or a semiconductor laser.
4. The beam-refracting and beam-expanding apparatus of claim 3, wherein the inert gas laser is a helium-neon laser or a carbon dioxide laser.
5. The beam-refracting and beam-expanding device according to claim 1, wherein the first mirror (300) is a laser mirror with an operating wavelength of 632.8nm and the second mirror (400) is a laser mirror with an operating wavelength of 650 nm.
6. The beam refraction and expansion device according to claim 1, further comprising a lower platform (600) and an upper platform (700) disposed in parallel up and down, and capable of adjusting the relative distance between the upper platform and the lower platform (600, 700), wherein the relative distance between the upper platform and the lower platform is adjusted by a height adjuster (800), the laser (100), the beam expander (200), and the first reflector (300) are disposed on the lower platform (600), and the second reflector (400) and the laser window (500) are disposed on the upper platform (700).
7. The beam-refracting beam-expanding apparatus according to claim 1 or 6, wherein the beam expander (200) comprises a beam expander mirror (200 a).
8. The device according to claim 1 or 6, wherein the beam expander (200) comprises a lens holder (201) with multiple detents (2011) and beam expanders (200 b) with different beam expansion angles corresponding to the detents (2011), and each beam expander (200 b) is rotatably disposed in the corresponding detent (2011) through a damping rotation shaft at the edge of the beam expander.
9. The beam-refracting and beam-expanding apparatus according to claim 8, wherein the beam-expanding divergence angle of the beam-expanding lens (200 b) at each of the screens (2011) increases sequentially along the light-transmitting direction of the initial linear laser beam output by the laser (100).
10. The beam-refracting and beam-expanding apparatus according to claim 9, wherein the beam-diverging angle of the beam-expanding lens (200 b) at each of the screens (2011) increases in sequence between 2 ° and 15 ° along the light-transmitting direction of the initial linear laser beam output by the laser (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022717046.9U CN214343997U (en) | 2020-11-23 | 2020-11-23 | Beam refraction and expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022717046.9U CN214343997U (en) | 2020-11-23 | 2020-11-23 | Beam refraction and expansion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214343997U true CN214343997U (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022717046.9U Active CN214343997U (en) | 2020-11-23 | 2020-11-23 | Beam refraction and expansion device |
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|---|---|
| CN (1) | CN214343997U (en) |
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- 2020-11-23 CN CN202022717046.9U patent/CN214343997U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20220520 Address after: Room 501, building 1, No. 168, Majian Road, high tech Zone, Suzhou, Jiangsu 215000 Patentee after: Tiancai Guangcai medical technology (Suzhou) Co.,Ltd. Address before: 518054 room 205, floor 2, building 5, Qianhai Shenzhen Hong Kong youth dream factory, No. 35, Qianwan 1st Road, Qianhai Shenzhen Hong Kong cooperation zone, Shenzhen, Guangdong Patentee before: Zhonggang Dafu Science and Technology (Shenzhen) Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240117 Address after: 518054 room 205, floor 2, building 5, Qianhai Shenzhen Hong Kong youth dream factory, No. 35, Qianwan 1st Road, Qianhai Shenzhen Hong Kong cooperation zone, Shenzhen, Guangdong Patentee after: Zhonggang Dafu Science and Technology (Shenzhen) Co.,Ltd. Address before: Room 501, building 1, No. 168, Majian Road, high tech Zone, Suzhou, Jiangsu 215000 Patentee before: Tiancai Guangcai medical technology (Suzhou) Co.,Ltd. |
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Effective date of registration: 20240313 Address after: Room 3515, 1st Floor, Building 1, No. 2 Yongcheng North Road, Haidian District, Beijing, 100000 Patentee after: Beijing Guangcai Tomorrow Kangshi Medical Technology Co.,Ltd. Country or region after: China Address before: 518054 room 205, floor 2, building 5, Qianhai Shenzhen Hong Kong youth dream factory, No. 35, Qianwan 1st Road, Qianhai Shenzhen Hong Kong cooperation zone, Shenzhen, Guangdong Patentee before: Zhonggang Dafu Science and Technology (Shenzhen) Co.,Ltd. Country or region before: China |
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