The Optimal Design for New Structure in the Direct-light-type Backlight Module
In the direct-light-type backlight module, besides uniformity, the efficiency of light is also the important property. The common method is using optical ray-tracing of business software to simulate. But using optical software costs a lot of time and they have no optimum function. It can not satisfy speedy simulation of requirement to design and research. We change structure of bottom reflector in the backlight module, to add triangular reflect object between lamps. They can decrease rays angle with normal, and collimate direction of rays. Then build up program include ray-tracing, distribution of illumination , and optimization to reduce time for simulation. We optimize both uniformity and efficiency of light, and using optical software to test and verify. The result of optimization would reduce the cost of module. To simulate 32 16:9 panel, depth is 2.5 cm, number of lamps is 10 with triangular reflect object and to add easy scatter of diffuser on module, the optimal distribution of light for half-intensity angle is 46° and uniformity is also over 80％.
Direct-light-type Backlight Module Simulation of Ray-tracing Uniformity Efficiency of Light
Chi-Feng Chen Lea-Ming Lu
Department of Mechanical Engineering/Institute of Opto-Mechatronics Engineering, National Central Un Department of Mechanical Engineering, National Central University, Jhongli, Taiwan, China
国际会议
上海
英文
1881-1885
2007-03-12（万方平台首次上网日期，不代表论文的发表时间）