Reduction of speckles and distortion in projection system by using a rotating diffuser

Chien Yue Chen, Wei Chia Su, Ching Huang Lin, Ming De Ke, Qing Long Deng, Kuan Yao Chiu

Research output: Contribution to journalArticle

18 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)440-443
Number of pages4
JournalOptical Review
Issue number6
Publication statusPublished - 2012 Nov 1


All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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