Widening device of high-power laser beam and method thereof
A laser beam, high-power technology, applied in the direction of laser welding equipment, optics, optical components, etc., to achieve stable work, high efficiency of laser energy utilization, and overcome the effect of beam broadening width
Inactive Publication Date: 2011-03-16
苏州市博海激光科技有限公司
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Problems solved by technology
However, the laser beam scanning width of this device is limited by its complex optical path design, and the laser beam can only be broadened within a limited range. For example, the current adjustable laser scanning width is only 20-40mm
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Embodiment
[0028] Embodiment: first as figure 1 As shown, the high-power laser beam stretching device provided in this embodiment is mainly composed of a continuous laser 1 , a fan-shaped reflective focusing mirror 2 , a deflecting galvanometer 3 , a high-speed motor 4 , a computer 5 and a refrigeration cycle system 6 . One side of the deflection galvanometer 3 is connected to the rotating shaft of the high-speed motor 4 , and the high-speed motor 4 is connected to the computer 5 , and the deflection angle β of the deflection galvanometer 3 can be controlled by preset parameters in the computer 5 . A cooling channel is opened in the deflection galvanometer 3 , and the cooling channel is connected with the refrigeration cycle system 6 . The deflecting galvanometer 3 is placed opposite to the fan-shaped reflective focusing mirror 2 , and the reflection point C of the laser beam emitted by the continuous laser 1 on the deflecting galvanometer 3 is concentric with the rotation center O of th...
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The invention discloses a widening device of a high-power laser beam and a method thereof. The device comprises a continuous laser, a sector reflection focusing lens, a deflection-type oscillating mirror, a high-speed motor and a computer. One side of the deflection-type oscillating mirror is connected with a rotation shaft of the high-speed motor. The high-speed motor is connected with the computer. The deflection-type oscillating mirror and the sector reflection focusing lens are placed oppositely. The laser beams emitted by the continuous laser are homocentric with a turning center O of the sector reflection focusing lens at a reflecting point C of the deflection-type oscillating mirror. The method causes the continuous laser beam output by the continuous laser to form continuous scanning beams in the sector region with a certain scanning angle alpha after being reflected by the deflection-type oscillating mirror rotating at high speed, wherein the scanning beams form continuous arc scanning focusing light bands on the surface of the processed work piece after being reflected and focused by the sector reflection focusing lens. Compared with the prior art, the device can widen the high-power laser beam in a wider range (20-500mm) and the widened width is continuously controllable.
Description
technical field [0001] The invention relates to the fields of laser processing and optoelectronic applications, in particular to a high-power laser beam stretching device and method. Background technique [0002] Focusing the original high-power laser beam can form a laser focus point with high energy density, and the focus point with high energy density can be applied to the surface of the metal material, and the surface of the metal material can be treated, such as: metal surface welding, heat treatment etc., to form a special surface layer on the metal surface to enhance the wear resistance, corrosion resistance, fatigue resistance, heat resistance and creep resistance of the metal material surface. The advantages of using laser for material surface heat treatment mainly include: fast processing speed, small thermal deformation zone of the processed part, selective local treatment, good processing flexibility, wide application range, and can handle irregular shaped parts ...
Claims
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IPC IPC(8): G02B27/09G02B26/10B23K26/06B23K26/062
Inventor 陈培锋杜建伟罗曦孙长东
Owner 苏州市博海激光科技有限公司