Abstract
The speckle phenomenon is an annoyance in laser projection display systems. We propose a novel speckle suppression method that utilizes the interference concept on a pixel point, which reduces the speckle contrast (SC) of the project image by limiting the phase distribution range in the optical field. The SC formula is derived in the uniform interval phase range for partially developed speckle conditions, showing that the SC can be lowered by lessening the phase range limitation. In the ideal simulation model, the SC can be reduced from 98.77% to 0% as the phase range limitation varies from to 0. The phase range limitation model is a novel method using a computer generated hologram to provide beam shaping and phase limitation. In a more realistic simulation model, the SC is reduced from 99.18% to 16.68%.
© 2014 Optical Society of America
Full Article | PDF ArticleMore Like This
Yan-Shuo Chang, Wei-Feng Hsu, Ku-Hui Hsu, and Hoang Yan Lin
Appl. Opt. 53(27) G214-G221 (2014)
Chien-Yue Chen, Qing-Long Deng, Pei-Jung Wu, Bor-Shyh Lin, Hsuan T. Chang, Hone-Ene Hwang, and Guan-Syun Huang
Appl. Opt. 53(27) G163-G168 (2014)
Victor Yurlov, Anatoly Lapchuk, Sangkyeong Yun, Jonghyeong Song, Injae Yeo, Haengseok Yang, and Seungdo An.
Appl. Opt. 48(1) 80-90 (2009)