CN200941530Y - Semiconductor laser speckle generator - Google Patents
Semiconductor laser speckle generator Download PDFInfo
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- CN200941530Y CN200941530Y CN 200620122959 CN200620122959U CN200941530Y CN 200941530 Y CN200941530 Y CN 200941530Y CN 200620122959 CN200620122959 CN 200620122959 CN 200620122959 U CN200620122959 U CN 200620122959U CN 200941530 Y CN200941530 Y CN 200941530Y
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- beam angle
- angle converter
- semiconductor laser
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- sphere
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Abstract
A semi-conducting laser speckle generation device which is equipped with a semi-conducting laser, the output end is equipped with beam angle converter (4), the beam angle converter is the combination of the spherical lens and the column lens, the rear end surface is frosted surface (8). An frosted concave groove (9) through the axle is arranged on the surface. Output end of the semi-conducting laser focus on the concave groove (9), the front end surface of the beam angle converter (4) is frosted spherical surface (6) which is concaved backward. A frosted spherical surface with small diameter is arranged in the center of the spherical surface which is co-axial concaved backward. The beam angle converter (4) is arranged at the rear of the non-spherical reflection cavity. A Fresnel lens (2) is arranged at the front end of the non-spherical reflection cavity, the front of the Fresnel lens is equipped with optic diffuser (1). The utility model can expand strip beam of light produced by semiconductor laser into circular, square or other form laser beam bundle in suitable brightness. The utility model also has advantage of simple structure, small volume and easy combination etc.
Description
Technical field
The utility model belongs to a kind of semicondcutor laser unit, is specifically related to a kind of device that semiconductor strip beam spread can be become even speckle.
Background technology
Medical research and a large amount of clinical practices show, weak laser irradiation tissue can improve 25% ~ 30% of dna level among the human nucleus, also can improve the level of the RNA in the nucleus simultaneously, improves CBF in the tissue, improve blood flow parameter, improve the metabolic ability in the human body.The Photochemical effects of weak laser irradiated biological body can also improve the lymphocytic ability of engulfing, and produce " light massage " effect.The effect that weak laser acts on tissue is directly proportional with the intensity of executing the irradiation bundle and the uniformity, and the high more result of treatment of the light beam uniformity is good more under the same conditions, is not always the case with the treatment and the physiotherapy of weak laser to blood, skin, eyes.
Traditional helium neon laser can produce round hot spot, therefore be widely used in clinical medicine, the semiconductor laser generator that development in recent years is got up has a lot of advantages compared with helium neon laser, but, its light beam is carried out just being directly used in therapeutic treatment and physiotherapy after the shaping conversion so have only because the hot spot of its generation is uneven bar shaped.
Summary of the invention
The technical problem to be solved in the present invention is to overcome above-mentioned deficiency, provide a kind of volume little, simple in structure, can produce intensity evenly, the moderate semiconductor laser speckle generating means of speckle brightness.
The technical scheme that addresses the above problem is (referring to implementing illustration): the utility model is provided with semiconductor laser (5), it is characterized in that: on the output light path of semiconductor laser from after be provided with beam angle converter (4) forward successively, aspheric surface reflection cavity (3), Fresnel Lenses (2) and optical diffuser device (1), described beam angle converter (4) is spherical lens and cylindrical lens combination, thereafter end face is frosted plane (8), this plane is provided with the frosting groove (9) in a mistake axle center, semiconductor laser light output end alignment indentation (9), beam angle converter (4) front end face is recessed backward frosted sphere (6), the sphere centre position is provided with the frosted sphere (7) of the recessed minor diameter in coaxial back, beam angle converter (4) is contained in the afterbody of aspheric surface reflection cavity, aspheric surface reflection cavity front port is equipped with Fresnel Lenses (2), and optical diffuser device (1) is equipped with in the Fresnel Lenses front portion.
Described aspheric surface reflection cavity is meant axial symmetry surface of revolution or the taper of plane formation or the cavity of other shapes, and its curved surface is the above high order curved surface of secondary, and the plane can be the combination of a plurality of planes.
Operation principle of the present utility model is: semiconductor laser (5) sends the laser beam that cross section is an elongated strip shaped, this light beam expands the bundle shaping by beam angle converter (4), behind aspheric surface reflection cavity (3) and Fresnel Lenses (2) collimation, go up the uniform laser speckle of formation again at optical diffuser device (1).
The rear end face of the beam angle converter (4) that the utility model adopts is a matte surface, laser beam produces diffuse scattering and forms new light source on matte surface, the coherence who had both kept laser beam by this surperficial light beam, also further improved the brightness uniformity of laser beam, also reached simultaneously the purpose of further control speckle size, the groove (9) that the cross section of crossing central shaft that is provided with on this end face is semicircle plays the effect of translation-angle.Semiconductor laser emitted light beams cross section is that elongated strip shaped and Energy distribution are very inhomogeneous, such light beam is difficult in and forms uniform speckle on the optical diffuser device, this device is transformed to bar shaped light beam circular or square by the coaxial sphere of two different radiis of beam angle converter front end face, both can make full use of laser light energy, and also can make the beam intensity of transmission reach highly even.The laser beam of transmitted beam angle transverter (4) is collected by aspheric surface reflection cavity (3), inner chamber integrated tapered or other shape of aspheric surface reflection cavity (3), its axial section is an axisymmetric aspheric surface, the fringe region that aspheric surface reflection cavity (3) can reflex to the light at laser beam edge the optical diffuser device increases its optical density, has effectively improved the uniformity of illumination on the optical diffuser device.
The optical interval of the utility model device is different and different with the speckle bore with size.
The strip beam expander that the utility model physical efficiency is sent semiconductor laser is shaped to the laser beam of circle, square or other shapes, on the optical diffuser device, form the laser speckle of definite shape, its uniformity can reach 75%, and brightness is moderate, speckle size is adjustable.Laser beam and laser speckle have extremely unique eyes optics and Photobiology characteristic highly uniformly, it is the basis of weak laser therapeutic, physiotherapy, this device can be formed dissimilar weak laser therapeutic and physiotherapeutic instruments application product according to the arbitrary combination collocation that requires of specific product, and purposes is very extensive.And having simple in structurely, volume is little, the characteristics of being convenient to make up; Its overall structure can be made up by one or several speckle generators, thereby reaches the purpose that laser energy, speckle area are redistributed.
The utility model is used for the treatment and the physiotherapy of clinical medicine, can maximally utilise the characteristic such as optics, photochemistry of weak laser speckle, effectively improve hemorheology index, can treat ophthalmology diseases such as pseudo-myopia and amblyopia, eliminate visual fatigue with its irradiation eyes, irradiation of blood can suppress blood three height, improve the hemorheology index, irradiation skin can improve microcirculation and eliminate Zou Wen.
Description of drawings
Fig. 1, the utility model example structure schematic diagram
The structural representation of Fig. 2, the utility model embodiment beam angle converter knot 4
1-optical diffuser device 2-Fresnel Lenses 3-aspheric surface reflection cavity 4-beam angle converter
The frosted hemisphere face 8-frosted plane of 5-semiconductor laser 6-frosted hemisphere face 7-minor diameter
The 9-groove
Specific embodiments
Semiconductor laser 5 power outputs that this example adopts are that 10Mw, wavelength are 650nm, on its output light path from after be provided with beam angle converter 4 forward successively, aspheric surface reflection cavity 3, Fresnel Lenses 2 and optical diffuser device 1.
This routine beam angle converter 4 is a sphere, the cylindrical lens combination, thereafter end face is frosted plane 8, this plane is provided with the perforation frosted groove 9 in a mistake axle center, groove 9 cross section semicirculars in shape, semiconductor laser light output end alignment indentation 9, beam angle converter front end face is central axis and converter central axes, recessed backward frosted sphere 6, the sphere centre position is provided with the frosted sphere 7 of the recessed minor diameter in coaxial back, beam angle converter diameter is Φ 30mm, thickness 20mm, the beam angle converter becomes (also can adopt engineering plastics to make) with the optics glass.
The beam angle converter is contained in the afterbody of aspheric surface reflection cavity 3, and aspheric surface reflection cavity 3 longitudinal profiles are parabolic shape, and internal face scribbles the diffuse reflection coating layer, and this coating can guarantee the uniform diffuse reflection of laser beam.
It is 45mm that focal length is equipped with at aspheric surface reflection cavity front port position, and diameter is the Fresnel Lenses 2 of 50mm, and the optical diffuser device 1 that diameter is 50mm is equipped with in the Fresnel Lenses front portion.
This device can be used for producing the circular evenly laser speckle that diameter is 50mm.
Claims (4)
1, a kind of semiconductor laser speckle generating means, be provided with semiconductor laser (5), it is characterized in that: on the output light path of semiconductor laser from after be provided with beam angle converter (4) forward successively, aspheric surface reflection cavity (3), Fresnel Lenses (2) and optical diffuser device (1), described beam angle converter (4) is spherical lens and cylindrical lens combination, thereafter end face is frosted plane (8), this plane is provided with the frosting groove (9) in a mistake axle center, semiconductor laser light output end alignment indentation (9), beam angle converter (4) front end face is recessed backward frosted sphere (6), the sphere centre position is provided with the frosted sphere (7) of the recessed minor diameter in coaxial back, beam angle converter (4) is contained in the afterbody of aspheric surface reflection cavity, aspheric surface reflection cavity front port is equipped with Fresnel Lenses (2), and optical diffuser device (1) is equipped with in the Fresnel Lenses front portion.
2, semiconductor laser speckle generating means according to claim 1 is characterized in that: cross groove (9) the cross section semicircular in shape in axle center on the described beam angle converter rear end face, this groove connects rear end face.
3, semiconductor laser speckle generating means according to claim 1 and 2 is characterized in that: described aspheric surface reflection cavity inner surface adheres to the uniform diffuse reflection coating that can increase dispersion effect.
4, semiconductor laser speckle generating means according to claim 1 and 2 is characterized in that: the central axis of the frosted sphere (7) of the minor diameter that frosted sphere (6) that described beam angle converter (4) front end face is recessed backward and sphere centre position are recessed backward and the central axes of beam angle converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620122959 CN200941530Y (en) | 2006-08-08 | 2006-08-08 | Semiconductor laser speckle generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620122959 CN200941530Y (en) | 2006-08-08 | 2006-08-08 | Semiconductor laser speckle generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200941530Y true CN200941530Y (en) | 2007-08-29 |
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ID=38747706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620122959 Expired - Fee Related CN200941530Y (en) | 2006-08-08 | 2006-08-08 | Semiconductor laser speckle generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN200941530Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928472A (en) * | 2016-07-11 | 2016-09-07 | 西安交通大学 | Three-dimensional shape dynamic measurement method based on active spot projector |
| CN108348766A (en) * | 2016-10-17 | 2018-07-31 | 西安炬光科技股份有限公司 | A kind of semiconductor laser module and the method for non-invasive medical |
| CN110612467A (en) * | 2017-12-03 | 2019-12-24 | 鲁姆斯有限公司 | Optical lighting device |
| US10895679B2 (en) | 2017-04-06 | 2021-01-19 | Lumus Ltd. | Light-guide optical element and method of its manufacture |
| US11125927B2 (en) | 2017-03-22 | 2021-09-21 | Lumus Ltd. | Overlapping facets |
| US11194084B2 (en) | 2017-02-22 | 2021-12-07 | Lumus Ltd. | Light guide optical assembly |
| US11378791B2 (en) | 2016-11-08 | 2022-07-05 | Lumus Ltd. | Light-guide device with optical cutoff edge and corresponding production methods |
| US11523092B2 (en) | 2019-12-08 | 2022-12-06 | Lumus Ltd. | Optical systems with compact image projector |
| US11526003B2 (en) | 2018-05-23 | 2022-12-13 | Lumus Ltd. | Optical system including light-guide optical element with partially-reflective internal surfaces |
| US11543661B2 (en) | 2014-11-11 | 2023-01-03 | Lumus Ltd. | Compact head-mounted display system protected by a hyperfine structure |
| US11567316B2 (en) | 2016-10-09 | 2023-01-31 | Lumus Ltd. | Aperture multiplier with depolarizer |
-
2006
- 2006-08-08 CN CN 200620122959 patent/CN200941530Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11543661B2 (en) | 2014-11-11 | 2023-01-03 | Lumus Ltd. | Compact head-mounted display system protected by a hyperfine structure |
| CN105928472A (en) * | 2016-07-11 | 2016-09-07 | 西安交通大学 | Three-dimensional shape dynamic measurement method based on active spot projector |
| US11567316B2 (en) | 2016-10-09 | 2023-01-31 | Lumus Ltd. | Aperture multiplier with depolarizer |
| CN108348766A (en) * | 2016-10-17 | 2018-07-31 | 西安炬光科技股份有限公司 | A kind of semiconductor laser module and the method for non-invasive medical |
| US11378791B2 (en) | 2016-11-08 | 2022-07-05 | Lumus Ltd. | Light-guide device with optical cutoff edge and corresponding production methods |
| US11194084B2 (en) | 2017-02-22 | 2021-12-07 | Lumus Ltd. | Light guide optical assembly |
| US11125927B2 (en) | 2017-03-22 | 2021-09-21 | Lumus Ltd. | Overlapping facets |
| US10895679B2 (en) | 2017-04-06 | 2021-01-19 | Lumus Ltd. | Light-guide optical element and method of its manufacture |
| CN110612467A (en) * | 2017-12-03 | 2019-12-24 | 鲁姆斯有限公司 | Optical lighting device |
| US11526003B2 (en) | 2018-05-23 | 2022-12-13 | Lumus Ltd. | Optical system including light-guide optical element with partially-reflective internal surfaces |
| US11523092B2 (en) | 2019-12-08 | 2022-12-06 | Lumus Ltd. | Optical systems with compact image projector |
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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: 20070829 Termination date: 20110808 |