LCD device including an illumination device having a polarized light separating sheet between a light guide and the display
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United States of America Patent
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Dec 24, 1996
Issued Date -
N/A
app pub date -
Oct 19, 1995
filing date -
Oct 9, 1992
priority date (Note) -
Reissued
status (Latency Note)
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Abstract
An illumination device for a direct viewing type display element comprising a flat light guide; a light source set such that light is incident on a side portion of said flat light guide; a polarized light separating flat set on a first side of a light emitting side of the flat light guide for transmitting a p polarized light component and reflecting at least a portion of an s polarized light component with respect to a light ray substantially having a predetermined direction of incidence; and a light reflecting sheet disposed on a second side opposite to said light emitting side of the flat light guide in parallel with the light emitting site.
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