Research On The Technique Of The Information Process Of Large Screen Laser Display System

Nowadays, the display field is following the way of high definition, high brightness andhigh resolution, and there are many new display techniques emerging and developing intoperfection. Large screen laser display posses more distinctive advantages than other displaypatterns since laser enjoy perfect monochromatization, high luminance and well-orientation.So, it's hopeful to see its bright future. The main orientation of the paper is large screen scanning laser display, that is, theimage signals respectively control the tricolor all-solid-state laser via control system. Afterbeing modulated and color-mixed, the laser beam will carry out the scanning of horizontallines and vertical lines through controlled double galvanometer, and then former image canultimately be displayed on the large screen. This paper focuses on introducing the laserdisplay system's technique on information process and designs control system on the basis ofa single-chip-microcomputer. Experiments show that it can meet the needs of displaying theoriginal image over a relatively long distance, which indicates that this program is feasible.Specifically, this paper studies the technique of color mixing and modulation of laser.Now, the system uses spectroscope to mix color and the new program which outputs electricpower through LD drive electrical source to modulate solid-state laser has been raised;itanalyzes two ways of laser scanning, carries out experiment by using double galvanometer toscan at present condition and introduces reason and emendation of image distortion. With thedevelopment of galvanometer's function, double galvanometer scanning will further meet theneeds of large screen laser display;it designs laser display system by referring to displaytechnique of color television;and it realizes scanning synchronization, on the basis of controlcircuit it completes the control of tricolor laser and double galvanometer scanning module. Itsuccessfully reduces simple figures and writings over long distance on the large screen.