9 February 2007 Spatial optical modulator (SOM): high-density diffractive laser projection display
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A new type of diffractive spatial optical modulators, named SOM, has been developed by Samsung Electro-Mechanics for laser projection display. It exhibit inherent advantages of fast response time and high-performance light modulation, suitable for high quality embedded laser projection displays. The calculated efficiency and contrast ratio are 75 % and 800:1 respectively in case of 0th order, 67 % and 1000:1 respectively in case of ±1st order. The response time is as fast as 0.7 &mgr;s. Also we get the displacement of 400 nm enough to display full color with single panel in VGA format, as being 10 V driven. Optical module with VGA was successfully demonstrated for its potential applications in mobile laser projection display such as cellular phone, digital still camera and note PC product. Electrical power consumption is less than 2 W, volume is less than 13 cc. Brightness is enough to watch TV and movie in the open air, being variable up to 6 lm. Even if it's optimal diagonal image size is 10 inch, image quality does not deteriorate in the range of 5 to 50 inch because of the merit of focus-free. Due to 100 % fill factor, the image is seamless so as to be unpleasant to see the every pixel's partition. High speed of response time can make full color display with 24-bit gray scale and cause no scan line artifact, better than any other devices.
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SangKyeong Yun, JongHyeong Song, InJae Yeo, YoonJoon Choi, Victor Yurlov, SeungDo An, HeungWoo Park, HaengSeok Yang, YeongGyu Lee, KyuBum Han, Ihar Shyshkin, Anatoliy Lapchuk, KwanYoung Oh, SeungWon Ryu, JaeWook Jang, ChangSu Park, ChunGi Kim, SunKi Kim, EungJu Kim, KiSuk Woo, JeongSuong Yang, EuiJoong Kim, JooHong Kim, SungHo Byun, SeungWoo Lee, OhkKun Lim, JongPil Cheong, YoungNam Hwang, GiYoung Byun, JeHong Kyoung, SangKee Yoon, JaeKwang Lee, TaeWon Lee, SeokKee Hong, YoonShik Hong, DongHyun Park, JungChul Kang, WooChul Shin, SungIl Lee, SungKyung Oh, ByungKi Song, HeeYeoun Kim, ChongMann Koh, YungHo Ryu, HyunKee Lee, YoungKi Baek, "Spatial optical modulator (SOM): high-density diffractive laser projection display", Proc. SPIE 6487, Emerging Liquid Crystal Technologies II, 648710 (9 February 2007); doi: 10.1117/12.714699; https://doi.org/10.1117/12.714699


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