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(2)光学系统该机构的激光头,采用一只650nm光栅型激光二极管与集成有柱面透镜的光检测集成电路PD,均安装在激光腔中,在通往物镜孔的光路中还安装了一片分光棱镜,并与物镜一起构成光学系统。如图12所示。读取机构中的物镜,采用特殊塑料经微米级立体圆柱镜头切割技术加工而成,具
(2) optical system The mechanism of the laser head, the use of a 650nm grating laser diode integrated with a cylindrical lens optical detection integrated circuit PD, are installed in the laser cavity, in the optical path to the objective lens hole is also installed A dichroic prism, and together with the objective lens to form an optical system. As shown in Figure 12. Reading institutions in the objective lens, the use of special plastic by the three-dimensional micro-cylindrical lens cutting technology processing, with