External aperturing for digital micromirror devices

Details External aperturing for digital micromirror devices External aperturing for digital micromirror devices

2006-05-16

2006-05-16

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C359S298000

Reexamination Certificate

active

07046419

ABSTRACT:
A digital micromirror device arrangement and devices using the arrangement are disclosed. The arrangement includes a digital micromirror device (DMD) having an active area, a cover plate disposed substantially adjacent to the DMD and having a thickness and a light blocking area having an aperture formed therein. The active area is adapted to receive incoming light and to reflect the incoming light as outgoing light. The light-blocking layer is offset from a plane of the active area by at least the thickness of the cover plate and is adapted to block light from passing therethrough. The aperture is dimensioned to produce a beam of outgoing light having desired dimensions.

REFERENCES:
patent: 5818095 (1998-10-01), Sampsell
patent: 6489984 (2002-12-01), Johnson
patent: 6667837 (2003-12-01), Shockey
patent: 6954245 (2005-10-01), Mi et al.
patent: 2002/0056900 (2002-05-01), Liu
patent: 2004/0150058 (2004-08-01), Liu

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