Illumination – Light source and modifier – Carbon arc type
Reexamination Certificate
2005-04-26
2005-04-26
Husar, Stephen (Department: 2875)
Illumination
Light source and modifier
Carbon arc type
C362S027000, C362S035000, C362S555000, C362S561000, C362S335000, C362S326000, C362S340000, C349S065000, C385S033000
Reexamination Certificate
active
06883934
ABSTRACT:
A light source device41A,41B or41C comprising a lens44A,44B or44C which receives light from a light emitting device43such as LED. The lens44A is a lens having the property that the directivity of exiting light in the Y direction is higher than the directivity in the X direction perpendicular to the Y direction. Namely, the light emitted from the light emitting device43is condensed in a narrow angular range in the Y direction, and is scattered in a wide angular range in the X direction. When the light source device41A is used as a light source of an illumination device of a liquid crystal device, the height direction of a light guide in which the dimension is small coincides with the Y direction, and the width direction of the light guide in which the dimension is large coincides with the X direction.
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European Search Report, European Patent Application No. 01305799.7.
Endo Kogo
Kawakami Hisanori
Harness & Dickey & Pierce P.L.C.
Husar Stephen
Seiko Epson Corporation
Zeade Bertrand
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