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Proceedings Paper

200-in. full-color laser projection display
Author(s): Young Mo Hwang; Jin-Ho Lee; Youngjun Park; Jungho Park; Seungnam Cha; Yonghoon Kim
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Paper Abstract

A 200 inches large-area laser projection display is presented. the laser light processor is mainly composed of a white laser for light source, acousto-optic modulators and the laser beam scanner composed of a galvanometer and a polygon scan mirror. The white light source is a Krypton- Argon laser with main wavelengths 647nm, 515nm, 488nm, respectively. Collimated and focused laser beams are modulated at acousto-optic modulators according to the video signals. Dichroic mirrors are used for separating the white laser beam to red, green, blue light beams and recombining the modulated red, green, blue light beams to one light beam. Recombined laser beam is vertically scanned by a galvanometer running at 60Hz rate and horizontally scanned by the 24 facet polygon scan mirror rotating at the speed of 39,375rpm. Between the polygon scan mirror and the galvanometer, relay lenses are inserted for which horizontally scanned beam is focused onto the galvanometer mirror facet. The size of 4m X 3m image with high resolution is obtained at the throw distance of 7m using 4W white light.

Paper Details

Date Published: 17 April 1998
PDF: 10 pages
Proc. SPIE 3296, Projection Displays IV, (17 April 1998); doi: 10.1117/12.305520
Show Author Affiliations
Young Mo Hwang, Samsung Advanced Institute of Technology (South Korea)
Jin-Ho Lee, Samsung Advanced Institute of Technology (South Korea)
Youngjun Park, Samsung Advanced Institute of Technology (South Korea)
Jungho Park, Samsung Advanced Institute of Technology (South Korea)
Seungnam Cha, Samsung Advanced Institute of Technology (South Korea)
Yonghoon Kim, Samsung Advanced Institute of Technology (South Korea)


Published in SPIE Proceedings Vol. 3296:
Projection Displays IV
Ming Hsien Wu, Editor(s)

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