Design and fabrication of hybrid dichroic mirrors for light separation/recombination by using a flat plate

Jungho Park; Young Mo Hwang; Yonghoon Kim; Eung Ho Kim; Su Yong Jeong

doi:10.1117/12.328545

29 October 1998 Design and fabrication of hybrid dichroic mirrors for light separation/recombination by using a flat plate

Jungho Park, Young Mo Hwang, Yonghoon Kim, Eung Ho Kim, Su Yong Jeong

Author Affiliations +

Proceedings Volume 3429, Current Developments in Optical Design and Engineering VII; (1998) https://doi.org/10.1117/12.328545
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

We report the design and fabrication of Hybrid Dichroic Mirrors (HDM) for the separation and the recombination of white laser beam by using small sized flat plate for a small Laser Projection Display (LPD) system. This small sized laser projection display system is consist of a white laser, hybrid dichroic mirrors, 3-channel AOM and a beam scanning part. Red, green and blue light beams are separated by one flat plate dichroic mirror and also modulated by the 3-channel AOM, are recombined to one beam by another flat plate dichroic mirror. These hybrid dichroic mirrors are designed to measure the separation and recombination of s-polarized light beams of 647, 515, 488 nm wavelength from the white laser. Key element of the mirror design includes the quarter wavelength multilayers optimized to provide the best performance for the separation and recombination of light beams. The calculated values of the transmittance, which are pass through the hybrid dichroic mirror, are 95% for each separated/recombined color beams. The measured values of transmittance are over 90%.

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Jungho Park, Young Mo Hwang, Yonghoon Kim, Eung Ho Kim, and Su Yong Jeong "Design and fabrication of hybrid dichroic mirrors for light separation/recombination by using a flat plate", Proc. SPIE 3429, Current Developments in Optical Design and Engineering VII, (29 October 1998); https://doi.org/10.1117/12.328545

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