Illumination – Illuminated scale or dial – Internal light source
Patent
1995-11-13
1997-07-08
Cariaso, Alan
Illumination
Illuminated scale or dial
Internal light source
313113, 313488, 362224, 362225, 362243, 362245, 362255, 362260, 362308, G01D 1128
Patent
active
056453370
ABSTRACT:
A backlighting unit for illuminating a planar display is provided, comprising an illumination source having a light emitting portion for emitting illumination toward the generally planar display, and a reflector for collecting the emitted illumination and reflecting the collected illumination toward the planar display, the reflector being positioned intermediate the illumination source and the display. The illumination source is a fluorescent lamp having an interior surface thereof substantially coated with a phosphor, and the light emitting portion is an aperture in the fluorescent lamp wherein no phosphor coating is present. The fluorescent lamp may be provided with a reflective wrap for increasing its illumination gain. A lens positioned between the reflector and the display receives the illumination reflected by the reflector and redirects the received illumination toward the display to provide even backlit illumination thereof.
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Cariaso Alan
Interstate Electronics Corporation
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