Browsing by Author "Lin, Ching-Huang"

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Reduction of speckles and distortion in projection system by using a rotating diffuser
(2012-11-01)
Chen, Chien-Yue
;
Su, Wei-Chia
;
Lin, Ching-Huang
;
Ke, Ming-De
;
Deng, Qing-Long
A head up display (HUD) with laser backlight unit has two principle problems; one is laser speckles and the other is distortion. In this study, we propose that a rotating diffuser set at the intermediate image plane of the HUD projection system can simultaneously solve these problems. The conditions of speckle reduction and de-distortion are also estimated in this paper.