Illumination – With polarizer
Patent
1992-10-21
1994-10-25
Husar, Stephen F.
Illumination
With polarizer
362 1, 362 2, F21V 914
Patent
active
053594983
ABSTRACT:
An improvement in a multi-layer polarized light control panel comprising an ultraviolet transmitting acrylic supporting structure. Prior art multi-layer polarized light control panels are made with an ultraviolet absorbing acrylic supporting sheet, which blocks most ultraviolet light below 380 nanometers. Thus, the ultraviolet light which is emitted by fluorescent lamps, and in particular by specially formulated fluorescent lamps to provide so called "full-spectrum" light, is blocked by the prior art polarized light control panels. Use of an ultraviolet transmitting acrylic supporting sheet would permit the transmission of the ultraviolet light emitted from the lamp through the acrylic supporting sheet, which would then be polarized by the multi-layer polarized light control panel. The light diffusing polarized control panel can also be manufactured with an ultraviolet transmitting acrylic, providing a multi-layer polarizer of unsurpassed visual comfort probability. Transmission of ultraviolet light through the multi-layer polarized control panel would eliminate the glare from the ultraviolet light, as well as the visible light. There is a significant improvement of the apparent brightness of paper and textile products when viewed under light sources equipped with full-spectrum, as well as standard fluorescent lamps, as virtually all paper materials and textiles have chemical substances which fluoresce under ultraviolet light.
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Husar Stephen F.
Walker Alfred M.
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