Optical: systems and elements – Having significant infrared or ultraviolet property
Patent
1997-09-30
1999-07-20
Shafer, Ricky D.
Optical: systems and elements
Having significant infrared or ultraviolet property
359352, 359361, 359490, 359491, 359493, 359601, 359722, 351 44, 351 49, 351163, F21V 906, G02B 530, G02B 2728
Patent
active
059263105
ABSTRACT:
A polarizing film or composite which can eliminate glare of the light reflected by an object and passing therethrough while maintaining the original color of the object. The polarizing film is color-adjusted so that the color coordinates L, a and b in the UCS color space, where L is the color brightness divided into 0 to 100 sections and in terms of tristimulus values X, Y and Z in the standard colorimetric system CIE, L=100Y.sup.1/2, a=175 (1.02X-Y) Y.sup.1/2, b=70 (Y-0.847Z) y.sup.1/2, will be 22.ltoreq.L.ltoreq.70, -2.0.ltoreq.a.ltoreq.2.0, -2.0.ltoreq.b.ltoreq.2.0, that the light transmittance in the wavelength range of 410-710 nm will be within +30% of its average, and that the light transmittance in the wavelength range of 410-750 nm will be not more than 2% when two of said polarizing films are put one upon the other so that their polarizing axes extend perpendicularly to each other. The polarizing composite includes a pair of light-transmissive sheets or lenses and a polarizing film sandwiched between the sheets or lenses. The film and the sheets or lenses contain colorants so that the light transmittance satisfies the above conditions.
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Mitsuuchi Shoichi
Tamura Kanichi
Shafer Ricky D.
Talex Optical Co., Ltd.
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