Semiconductor laser uniform light beam line generator
A uniform beam and line generator technology, applied in laser welding equipment, instruments, optics, etc., can solve the problems of unchangeable working distance and complex system, and achieve the effect of good uniformity of light intensity distribution, simple system and compact structure
Inactive Publication Date: 2007-05-30
ZHEJIANG UNIV
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However, the disadvantages of complex system and unchangeable working distance still exist
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[0015] Through the processing of the optical medium, the incident surface is composed of two concave cylindrical surfaces and a plane connected with the two cylindrical surfaces; the outgoing surface is a convex cylindrical surface; the central axis of the two concave cylindrical surfaces of the incident surface is connected with the convex cylindrical surface of the outgoing surface The central axes are perpendicular to each other. The central axes of the two concave cylindrical surfaces are parallel and the two concave cylindrical surfaces are connected to each other to form sharp corners or connected by transition cylindrical surfaces. By splitting the incident semiconductor laser beam into multiple parts and then superimposing them in the far field, a uniform laser beamline is generated.
[0016] As shown in Figure 4, firstly, the shape parameters are determined according to the properties of the specific semiconductor laser beam. Then it is made by processing optical med...
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Abstract
The invention discloses a uniform semiconductor laser beam generator, its incident surface has a left- concave cylindrical surface, and a right-concave one as well as a left plane connected with the left-concave cylindrical surface and a right plane connected with the right-concave one, the central axes of the two concave cylindrical surfaces are parallel and compose a sharp angle, the outgoing surface is a convex-cylindrical surface, the central axes of the two concave cylindrical surfaces are vertical to that of the convex-cylindrical surface, the top surface and bottom surface connected with the convex cylindrical surface are vertical to the two concave cylindrical surfaces and mutually parallel. A system able to generate semiconductor laser beam, composed of the invention and a semiconductor laser, has the advantages of low cost, good distribution uniformity of intensity of light beam, arbitrary change of working distance, compact structure, and simple system. It can be widely applied to the fields of calibration in industrial processing, optical phototypesetting, optical data recording, etc.
Description
technical field [0001] The invention relates to an optical device for generating uniform beamlines of semiconductor lasers; it is used for shaping the beams emitted by semiconductor lasers into a laser beamline with uniform light intensity distribution on a working surface with any working distance in the far field. It is especially suitable for calibration in industrial processing, optical phototypesetting, and the key technology in optical data recording - laser beamline generator. Background technique [0002] In industrial processing, in order to reduce the processing error, an effective calibration mechanism is needed. As the cost of semiconductor lasers continues to decrease and the quality continues to improve, the use of semiconductor lasers to generate laser beamlines as a calibration method has been very maturely used in industrial processing. In addition, semiconductor laser beamlines are also widely used in laser phototypesetting and laser data storage. [0003...
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IPC IPC(8): G02B27/12B23K26/00G02F1/35
Inventor 沈诗哲张全
Owner ZHEJIANG UNIV