MICROMIRROR ELEMENT, PACKAGE FOR MICROMILLER ELEMENT, AND PROJECTION SYSTEM THEREFOR

Japanese Patent JP3889757

B2

PROBLEM TO BE SOLVED: To minimize diffracted light in a switching direction with respect to a mobile micromirror and a micromirror array in a projection display device or the like.
SOLUTION: A micromirror being not rectangular is adopted in order to minimize diffraction of light in the switching direction, namely, diffraction of light to a light receiving cone of a light condensing system. In order to minimize the cost of an irradiation system and the size of a display unit, a light source is arranged perpendicularly to rows (or columns) of an array or perpendicularly to a side of a frame demarcating an effective area of the array. Incident light is not practically perpendicular to side surfaces of individual micromirrors in the array. Perpendicular side surfaces diffract incident light in the direction of micromirror switching. This light diffraction decreases the contrast ratio of the micromirror, and thus an improved and more compact system is obtained.

Huyvers, Andrew, Gee.
Irkoff, Fedor
Patel, Satya Def
Richards, Peter, W.
Stockton, John

JP2004257715A

March 07, 2007

September 03, 2004

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Reflectivity, ink.

G03B21/00; B81B3/00; B81B7/02; B81B7/04; B81C1/00; G02B26/08; G02B27/18; G03B21/10; H04N3/08; H04N5/74; (IPC1-7): G03B21/00; B81B3/00; B81B7/02; G02B26/08

JP8265672A
JP1135187A
JP8023449A
JP7209594A
JP11258528A
JP9500738A

WO2002012925A1
US5661591
US5457493

Teshima Masaru

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