Design and Optimization of a Total-Internal-Reflection Prism in the Digital Micromirror Device Projection System

Li Dan; Yao Lianfang; Xu Xiyin; Cao Wen; Xue Yunyun; Guo Haicheng; Zhang Baolong

doi:10.3788/cjl201239.s216004

Journals >Chinese Journal of Lasers >Volume 39 >Issue s2 >Page 216004 > Article

Chinese Journal of Lasers
Vol. 39, Issue s2, 216004 (2012)

Design and Optimization of a Total-Internal-Reflection Prism in the Digital Micromirror Device Projection System

Li Dan^1、*, Yao Lianfang¹, Xu Xiyin¹, Cao Wen¹, Xue Yunyun¹, Guo Haicheng², and Zhang Baolong^1、3

Author Affiliations

¹[in Chinese]

²[in Chinese]

³[in Chinese]

show less

DOI: 10.3788/cjl201239.s216004 Cite this Article Set citation alerts

Li Dan, Yao Lianfang, Xu Xiyin, Cao Wen, Xue Yunyun, Guo Haicheng, Zhang Baolong. Design and Optimization of a Total-Internal-Reflection Prism in the Digital Micromirror Device Projection System[J]. Chinese Journal of Lasers, 2012, 39(s2): 216004 Copy Citation Text

show less

Abstract

Compared with the traditional total-internal-reflection (TIR) prism, the right-angle TIR prism is convenient to process. Meanwhile, it decreases 50% in the volume and 43% in the weight, which lowers the cost. Using the theory of optics the right-angle TIR prism is optimized in order to make it easier to process the structure. In the optical software simulation, the system′s efficiency decreases from 53% to 48.3%, while its uniformity can be enhanced from 68% to 91%. It proves that the right-angle TIR prism is reasonable and practicable.

Keywords

digital light processing illumination optical devices optical path right-angle total-internal-reflection prism