大屏幕全彩色激光投影技术

Large Screen and Full Color Laser Projection Technology

综合国内外激光器和扫描器技术状况和自身的研究成果,提出了一种大屏幕全彩色激光投影技术方案:使用三基色全固态激光器作光源,由两个检流计扫描器(即振镜)分别完成行和场扫描,可以在远距离幕体上获得数十平方米的静态或动态的二维彩色图像,具有足够高的亮度,在室内或室外暗环境下能够清晰观察.该项技术除了可在庆典、娱乐等场合应用外,还可在靶道测量中模拟形成一个具有逼真形态和动态的虚拟靶标,配之以CCD相机交汇摄像的方法,来测量飞行体的弹着点位置.

The paper synthesizes the technologies of the lasers and scanners inside and outside the country, puts forward the Laser Projection solution that three primary color lasers and two galvanometer scanners are used to realize the ultra large screen (25 m2) display in far distance (30 m). The light power ration of the three primary color lasers (R, G, B) must be matched. They are all full solid state lasers pumped by LD, electric-light conversion efficiency and operation stability are higher. The scanning velocity and pinpoint accuracy of the galvanometer scanners are respectively 1300 Hz and 99.9% about. The obtained two dimensional image may be static or dynamic, high luminosity and viewed clearly inside room or in the dark environment outside room. The display technology may be used generally in the public place of celebration and entertainment. A new application to form a virtual target of the flying objects is put forward in order to measure the position of the point of impact by means of cross photograph of two CCD cameras.