Light reflector

Details Light reflector Light reflector

2005-07-05

2005-07-05

Nguyen, Thong (Department: 2872)

Optical: systems and elements

Having significant infrared or ultraviolet property

Having ultraviolet absorbing or shielding property

C359S884000, C349S113000, C362S035000, C362S296040, C362S341000

Reexamination Certificate

active

06914719

ABSTRACT:
A light reflector formed of a biaxially-stretched film which contains a thermoplastic resin and a filler and has an opacity of at least 95%, a whiteness of at least 90%, a reflectance R0of at least 92%, and an areal draw ratio of from 22 to 80 times, wherein the color difference ΔEH, after irradiated with a metal halide lamp spaced from the light reflector by 10 cm under an environmental condition of 83° C. and a relative humidity of 50% and at an intensity of radiation of 90 mW/cm2for 10 hours, is at most 10. The reflector is free from the trouble of yellowing as in white polyester films heretofore used in reflectors and is stable against color change for a long period of time.

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patent: WO 02/04996 (2002-01-01), None

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