Illumination – Light modifier – Translucent or opaque
Patent
1979-03-12
1980-10-21
Walsh, Donald P.
Illumination
Light modifier
Translucent or opaque
362 23, 362333, 362346, 350345, 368227, 368234, F21V 106, G01D 1128
Patent
active
042297834
ABSTRACT:
A backlight for an electrooptic display, such as a liquid crystal display, serves to diffuse and distribute light from a point source, such as an incandescent bulb, over a broad, flat thin area providing backlighting for the display. The backlight employs a transparent light transmitting member with a slot or recess for the light source, wrapped in a thin transluscent sheet which covers both front and back surfaces and the edges to serve as a transflector.
REFERENCES:
patent: 3267598 (1966-08-01), Olesen
patent: 3491245 (1970-01-01), Hardesty
patent: 3864905 (1975-02-01), Richardson
patent: 4096550 (1978-06-01), Boller
Crutcher William C.
Timex Corporation
Walsh Donald P.
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