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Proceedings Paper

High-performance blazed GxL device for large-area laser projector
Author(s): Yasuyuki Ito; Kunihiko Saruta; Hiroto Kasai; Masato Nishida; Masanari Yamaguchi; Keitaro Yamashita; Ayumu Taguchi; Kazunao Oniki; Hitoshi Tamada
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Paper Abstract

A blazed GxL device is described that has 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. The key features were 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-μm 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 was observed after operating a 5,000- lumen projector for 2,000 hours and conducting 2,000 temperature cycling tests at -20°C and +80°C. Consequently, the world's largest laser projection screen with a size of 2005 inches (10 m × 50 m) and 6 million pixels (1,080 × 5,760) was demonstrated at the 2005 World Exposition in Aichi, Japan.

Paper Details

Date Published: 23 January 2006
PDF: 12 pages
Proc. SPIE 6114, MOEMS Display, Imaging, and Miniaturized Microsystems IV, 611401 (23 January 2006); doi: 10.1117/12.645463
Show Author Affiliations
Yasuyuki Ito, Sony Corp. (Japan)
Kunihiko Saruta, Sony Atsugi Technology Ctr. (Japan)
Hiroto Kasai, Sony Corp. (Japan)
Masato Nishida, Sony Corp. (Japan)
Masanari Yamaguchi, Sony Corp. (Japan)
Keitaro Yamashita, Sony Corp. (Japan)
Ayumu Taguchi, Sony Corp. (Japan)
Kazunao Oniki, Sony Corp. (Japan)
Hitoshi Tamada, Sony Corp. (Japan)

Published in SPIE Proceedings Vol. 6114:
MOEMS Display, Imaging, and Miniaturized Microsystems IV
Hakan Ürey; David L. Dickensheets; Bishnu P. Gogoi, Editor(s)

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