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Blazed $GxL^{TM}$ Device for Laser Dream Theatre at the Aichi Expo 2005
Ito, Yasuyuki,Saruta, Kunihiko,Kasai, Hiroto,Nshida, Masato,Yamaguchi, Masanari,Yamashita, Keitaro,Taguchi, Ayumu,Oniki, Kazunao,Tamada, Hitoshi The Korean Infomation Display Society 2007 Journal of information display Vol.8 No.2
A blazed $GxL^{TM}$ device is described as having high optical efficiency (> 70% for RGB lasers), and high contrast ratio (> 10,000:1), and that is highly reliable when used in a large-area laser projection system. It has a robust design and precise stress control technology to maintain a uniform shape (bow and tilt) of more than 6,000 ribbons, a $0.25-{\mu}m$ CMOS compatible fabrication processing and planarization techniques to reduce fluctuation of the ribbons, and a reliable Al-Cu reflective film that provided protection against a high-power laser. No degradation in characteristics of the GxL device is observed after operating a 5,000- lumen projector for 2,000 hours and conducting 2,000 temperature cycling tests at $-20^{\circ}C$ and $+80^{\circ}C$. At the 2005 World Exposition in Aichi, Japan the world's largest laser projection screen with a size of 2005 inches (10 m ${\times}$ 50 m) and 6 million pixels (1,080 ${\times}$ 5,760) was demonstrated.