Laser shaping device

Abstract

The invention provides a laser shaping device. The laser shaping device comprises a laser emitter, a beam expanding lens, a spatial filter, a shaping lens and a focus lens; the spatial filter is arranged on an optical path of laser beams and arranged between the laser emitter and the focus lens; the shaping lens is arranged on the optical path of the laser beams and arranged between the spatial filter and the focus lens; the laser beams pass through the shaping lens and accordingly gauss beams emitted from the laser emitter are converted into flat-topped beams. According to the laser shaping device, the laser beams are converted into the flat-topped beams which are uniform in energy density distribution through the beam shaping lens, the energy distribution of the laser beams is the gauss distribution, and accordingly the shaped flat-topped beams can obtain good slit cutting effect and efficiency in comparison with the beams which are in gauss distribution, the slit edge can be smooth without burr, heat effect or taper and the like, and the application in the micro manufacture filed of a laser shaping cutting slit is expanded.

Description

technical field [0001] The invention relates to the technical field of laser shaping, in particular to a laser shaping device. Background technique [0002] At present, lasers are widely used in the field of slit cutting, and slit sheets are generally used in spectrometer accessories, scientific research fields, projectors, etc. From small radios to large aerospace fields, oil drilling equipment, food, chemical analysis and other industries, among them, the materials used in medical, optical and scientific research fields have high requirements for the fineness of the slit. The traditional laser cutting slit The center of the Gaussian laser beam emitted by the laser emitter has the highest energy density, and the energy density gradually decreases when it expands from the center of the beam to the edge. In the process of cutting the slit, there will be edge ablation, burr and excessive taper, so that The light transmittance is greatly reduced. Contents of the invention ...

AI Technical Summary

Problems solved by technology

From small radios to large aerospace fields, oil drilling equipment, food, chemical analysis and other industries, among them, the materials used in medical, optical and scientific research fields have high requirements for the fineness of the slit. The traditional laser cutting slit The center of the Gaussian laser beam emitted by the laser emitter has the highest energy density, and the energy density gradually decreases when it expands from the center of the beam to the edge. In the process of cutting the slit, there will be edge ablation, burr and excessive taper, so that The light transmittance is greatly reduced

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