26 April 2002 Laser TV for home theater
Author Affiliations +
The laser TV using blue, green diode-pumped solid state lasers and a red diode laser is developed. The wavelengths of the blue, green and red are 457 nm, 532 nm and 648 nm, and the output powers are 350 mW, 700 mW and 500 mW, respectively. The power levels of lasers are adjusted for white color balance. The polygon mirror and the galvanometer are used for horizontal scanning and vertical scanning, respectively. The image size of 80 inches with high-brightness and VGA resolution (640 X 480 Progressive scanning) is obtained. The acousto-optic modulator (AOM) is fabricated for laser beam modulation, for which the carrier frequency of 350 MHz for XGA resolution is applied. TeO2 crystal, which is cut at Brewster angle, is used as an optical medium and LiNbO3 is attached as a transducer. In order to get a compact size, low cost, low-power consumption and lightweight, a scanning mirror using MEMS technology is fabricated by the size of 1500 micrometers X 1200 micrometers . This scanning mirror can be used as a galvanometric vertical scanner for laser TV.
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Jin-Ho Lee, Yong-Kweun Mun, Sang-Whoe Do, Young-Chul Ko, Do-Hyun Kong, Byoung-So Choi, Jong-Min Kim, Chang-Wan Hong, Duk-Young Jeon, "Laser TV for home theater", Proc. SPIE 4657, Projection Displays VIII, (26 April 2002); doi: 10.1117/12.463782; https://doi.org/10.1117/12.463782

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