Double pass illumination system

Details Double pass illumination system Double pass illumination system

2007-12-18

2007-12-18

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

C359S448000

Reexamination Certificate

active

11387510

ABSTRACT:
A display device is disclosed, wherein the display device comprises a light source configured to emit light, a projection lens configured to transfer the light to a display surface, at least one other optical element, and a lens disposed optically between the light source and the projection lens, wherein the lens is configured to enable a first transfer of the light from the light source to the at least one other optical element, and the lens is configured to enable a second transfer of the light from the at least one other optical element to the projection lens.

REFERENCES:
patent: 5260798 (1993-11-01), Um et al.
patent: 5796526 (1998-08-01), Anderson
patent: 6188529 (2001-02-01), Koyama et al.
patent: 2004/0061935 (2004-04-01), Ohsako et al.
patent: 2004/0240053 (2004-12-01), Shimoda
patent: 2007/0024811 (2007-02-01), Piehl et al.

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