Light tunnel and projection system utilizing the same

Details Light tunnel and projection system utilizing the same Light tunnel and projection system utilizing the same

2007-02-06

2007-02-06

Sember, Thomas M. (Department: 2875)

Illumination

Light source and modifier

Including reflector

C362S298000, C362S301000, C362S346000, C353S099000, C359S627000

Reexamination Certificate

active

11012105

ABSTRACT:
A projection system and a light tunnel applied in the projection system. The light tunnel comprises a first reflector, a second reflector, a third reflector, a fourth reflector, a light entrance, and a light exit. A distance between the third and fourth reflectors gradually changes from the light entrance to the light exit. The distance between the third and fourth reflectors at the light entrance and the light exit is less than length of each of the first and second reflectors. Thus, the light tunnel can be easily held and applied to various projection systems using various light sources and image generation devices.

REFERENCES:
patent: 4765718 (1988-08-01), Henkes
patent: 6856727 (2005-02-01), Li
patent: 6948832 (2005-09-01), Saccomanno et al.
patent: 2003/0076423 (2003-04-01), Dolgoff
patent: 2004/0201898 (2004-10-01), Chang et al.
patent: 2005/0088624 (2005-04-01), Lee et al.

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