Window film with optical brightener

Details Window film with optical brightener Window film with optical brightener

1997-10-04

2000-12-26

Spyrou, Cassandra

Optical: systems and elements

Having significant infrared or ultraviolet property

Having ultraviolet absorbing or shielding property

359359, F21V 906, F21V 904

Patent

active

061668524

ABSTRACT:
The disclosure of this invention relates to window solar control films and more particularly, to window treatment films that incorporate both an ultraviolet absorber and an optical brightner. The disclosure is concerned primarily with a multi layer film construction and method for the enhancement of the optical properties of window treatment films, by the use of optical brightner in at least one layer component of a multi layer window film. The window solar control film has enhanced the optical properties and absorbs most of the ultraviolet radiation. The subject multilayer film absorbs radiation in the range of 300 to 410 n.m. and does not have an undesirable yellowish tint or hue.

REFERENCES:
patent: 3854950 (1974-12-01), Held
patent: 4869993 (1989-09-01), Farahat et al.
patent: 5270116 (1993-12-01), Melancon et al.
patent: 5387458 (1995-02-01), Pavelka et al.
patent: 5523877 (1996-06-01), Lynam
patent: 5783307 (1998-07-01), Fagerburg et al.

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