Illumination – Plural light sources – With modifier
Reissue Patent
2007-08-01
2011-11-29
Husar, Stephen F (Department: 2875)
Illumination
Plural light sources
With modifier
C362S030000, C362S097200, C362S290000, C362S330000, C362S342000, C349S070000, C040S572000
Reissue Patent
active
RE042975
ABSTRACT:
The present invention features a system for uniformly distributing luminance and a high degree of collimation from a back light module for flat-panel, liquid crystal displays (LCDs) simultaneously. A constant and uniform luminance output of the back light module in two directions is obtained through appropriate selection of lamps, geometry and optical components. An appropriate balance of lamps, lamp spacing, diffusers and light collimating optics are chosen to produce a high brightness back light module with very high intensity output over two very large surfaces. Variations in intensity over the illuminated area are minimized using light recycling in conjunction with the reflective diffusers and collimating optics. Precision collimators eliminate light beyond a defined angle, as required in tiled or monolithic flat-panel LCDs with predetermined display specifications.
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U.S. Office Action, mailed Feb. 5, 2010, for U.S. Appl. No. 11/882,394.
Seraphim Donald P.
Skinner Dean W.
Husar Stephen F
Oliff & Berridg,e PLC
Seiko Epson Corporation
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