Optical element, optical module and beam shaping method

Abstract

An optical element, an optical module and a light beam shaping method relate to the technical field of optics, the optical element comprises a transmission part and a refraction part, the refraction part surrounds the transmission part, the transmission part comprises a transmission incident surface and a transmission emergent surface, the refraction part comprises a refraction incident surface and a refraction emergent surface, incident light enters the transmission incident surface and the refraction incident surface, and the transmission incident surface and the refraction emergent surface are opposite to each other. The light beam is refracted by the refracting part and then is emitted by the refracting emergent surface to form a refracted light beam with second energy distribution, and the transmitted light beam and the refracted light beam are superposed to form a light beam with third energy distribution. The optical element can cut and rearrange the light beams, so that the distribution characteristics of the light beams are changed, and the optical element is suitable for different application scenes.

Description

technical field [0001] The present invention relates to the field of optical technology, and in particular, to an optical element, an optical module and a beam shaping method. Background technique [0002] Semiconductor lasers have the advantages of small size, light weight, high reliability, long service life and low power consumption. They have been widely used in various fields of the national economy, such as pumping, medical treatment and industrial processing. However, the current promotion and application of semiconductor lasers will be restricted by their beam quality. Therefore, improving the output spot uniformity, brightness and power of semiconductor lasers has become an important research direction. [0003] Due to the large divergence angle of the semiconductor laser, the superposition of the beam at the center position is stronger than that at the edge position, resulting in a Gaussian distribution of the output spot energy and uneven spot. In order to solve ...

AI Technical Summary

Problems solved by technology

[0003] Due to the large divergence angle of semiconductor lasers, the beam superposition at the center position is stronger than that at the edge position, resulting in a Gaussian distribution of output spot energy and uneven spot

In order to solve the unevenness of the spot caused by the large divergence angle, at present, the flat-top spot can be realized by dividing the beam and superimposing it one by one. However, this method needs to control the parameters of each differential unit one by one, which requires high structural accuracy. The production cost is relatively high, and the accuracy of assembly and adjustment is relatively high.

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