A new polarization multiplexing method for the micro LCOS projector optical system

Qin-xiao Liu; Wen-zi Zhang; Hui-fang Gao; Fei-hong Yu

doi:10.1117/12.837843

25 November 2009 A new polarization multiplexing method for the micro LCOS projector optical system

Qin-xiao Liu, Wen-zi Zhang, Hui-fang Gao, Fei-hong Yu

Proceedings Volume 7506, 2009 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 75061A (2009) https://doi.org/10.1117/12.837843
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China

Abstract

In this paper we present a new polarization multiplexing method for the micro LCOS projector optical system. We use calcite to separate the P and S light with respect to the PBS used in the traditional way. The specific method is described as follow: the special lens group or TIR is used to collimate emission ray from the light source. The ray from the lens is changed into approximate parallel light. A convergent component is used to get the convergence light on the exit facet of the calcite. Because of the structure characteristic of the calcite, the angel between optical axis of crystal and cleavage surface is 45 degree. Then we can get two separate convergence light spot on the exit facet of the calcite which stands for the P and S light respectively. The linear half wave plate is used to convert the state of the polarization. Then light pipe and relay imaging lens are used to meet the requirements of the uniformity and incident angle on the micro LCOS chip.

Citation Download Citation

Qin-xiao Liu, Wen-zi Zhang, Hui-fang Gao, and Fei-hong Yu "A new polarization multiplexing method for the micro LCOS projector optical system", Proc. SPIE 7506, 2009 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 75061A (25 November 2009); https://doi.org/10.1117/12.837843

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