With the sustaining development of modern optics , especially the emergence of laser , polarizers are becoming more and more widely used . noteworthily , laser - polarizing prisms suitable for laser use emerge 随着现代光学的不断发展，尤其是激光出现以后，偏光器件的应用越来越广泛，特别值得注意的是适应激光应用特点的激光偏光棱镜应运而生。
2.
The asic chip embedded with bluetooth is usually employed as keyboard mouse equipment controller at present , so that is complicated and expensive to realize . noteworthily a new style of design is developed in the article : a 51 mcu is employed as keyboard mouse equipment controller while controlling bluetooth module as host , which give full play to 51 mcu and make the product at low cost , the design has sure practicability and innovative ; the software of pc end is designed as operating in the backstage , which receives data from usb interface to simulate the function of the keyboard and mouse . the design is easy , the thought is ingenious 由于目前常见的蓝牙键盘鼠标设备控制器都是用嵌入蓝牙核的asic芯片实现，所以实现复杂而且价格昂贵，而文中设计独辟蹊径：用一片51单片机作键盘和鼠标的微控制器，兼作控制蓝牙模块的主机，充分发挥了51单片机的性能，实现了低成本设计，具有一定实用性和创新性； pc机端软件则设计为运行在后台的应用程序，接收usb接口数据并进行处理，以模拟键盘鼠标功能，这一设计简单易行，思路巧妙。
