产生宽测量区域低发散度栅型结构光的光学系统  

Optical System Generating Wide Measurement Area and Low Divergence Degree Grating Structure Light

作　　者：吴志伟[1] 

机构地区：[1]泉州师范学院物理与信息工程学院,福建泉州362000

出　　处：《光学学报》2013年第9期108-113,共6页Acta Optica Sinica

基　　金：福建省教育厅省属高校科研专项(JK2013038)

摘　　要：提出了一种产生栅型结构光的新型光学系统,该系统由两个不同底角的双棱镜和一个柱面透镜组合而成。解决了单个双棱镜产生栅型结构光的有效区域小,无法应用于全场测量的问题。采用几何光学理论详细分析了产生栅型结构光的物理过程,给出了光束相关参数的计算公式。应用光学分析软件Zemax模拟了新型光学系统后不同位置处的光强分布及其随系统参数(光学元件的结构参数、元件之间的相对位置等)的变化;模拟结果与几何光学分析的结果基本一致。研究表明:平面波通过新型光学系统能够产生一种具有测量区域宽、发散度低、参数调节灵活等特点的栅型结构光。A novel optical system is proposed, and it is composed of two biprisms with different bottom corners and one cylindrical lens. The technical problem that the striped regional of grating structure light generating by single biprism is so small that it cannot be applied to wide range measurement is solved. Physical processes of generating grating structure light is analyzed by geometrical optics, and relevant parameters are also calculated. The intensity distribution in different positions after system is simulated by Zemax software, and the intensity distribution with the change of system parameters, e.g. structure parameters of optical elements and relative position between optical elements, are also analyzed. The conclusion of simulation is consistent with that of geometrical optics theory. The result shows that when a plane wave illuminates on the novel optical system, the grating structure light with wide measurement area, low divergence degree and adjustment flexibulity is formed.

关 键 词：几何光学 栅型结构光 宽测量区域 低发散度 

分 类 号：O435[机械工程—光学工程]