半导体激光光幕的平行性和均匀性研究

Study on the Parallelism and Uniformity of Semiconductor Laserscreen

设计了一套光学系统——以红光点状光斑半导体激光器作为发光光源,光束通过光阑,再经过鲍威尔棱镜形成扇形光幕,然后经过菲涅尔透镜形成一道光强分布均匀的平行光幕。介绍了鲍威尔棱镜和菲涅尔透镜的工作原理,给出了系统示意图,对光幕光强分布进行测试,给出了光强分布图,最后对结果进行了分析。

An optical system was designed-the red light laser with circularity facular was used as the radiant lamphouse, the beam of light went across the diaphragm and Powell prism, formed a sector light-screen, then went across Fresnel lens. formed a parallel light, the distribution of which was symmetrical. The working principle of the Powell prism and Fresnel lens was introduced, the sketch map of the system was given, the distribution of the light-screen was tested, and then the distributing fig of the laser was given. At last, the result analysis was made.