Illumination – Display backlight
Reexamination Certificate
2006-10-11
2010-11-30
Alavi, Ali (Department: 2875)
Illumination
Display backlight
C362S223000, C362S030000, C362S812000
Reexamination Certificate
active
07841733
ABSTRACT:
A display device such as a light box comprises: a housing; a light source accommodated in this housing; and at least one diffusely translucent display face illuminated by the light from this light source.Orienting means are added to the light source so as to obtain a directional characteristic of the light emitted by the light source such that the light source directly illuminates at least one wall almost exclusively.This at least one wall is diffusely reflective such that a part of the light incident thereon is reflected to the display face. This has an almost constant luminance as a result.
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Alavi Ali
Koninklijke Philips Electronics , N.V.
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