Light control with color enhancement

Details Light control with color enhancement Light control with color enhancement

1991-10-07

1992-12-22

Arnold, Bruce Y.

Optical: systems and elements

Having significant infrared or ultraviolet property

Multilayer filter or multilayer reflector

359585, 359589, 52171, G02B 528, G02B 110

Patent

active

051738007

ABSTRACT:
A window achieves broad band infrared reflection with a thin reflective layer and a clear interference coating on its outside surface. Color viewed from outside is enhanced by varying the thickness of the interference coating, while the window still exhibits neutral color to transmitted light. The reflective layer is formed of a metal such as copper, gold or copper alloy to provide enhanced IR reflection extending beyond ten microns. The metal is preferably deposited without agglomeration, and with uniformity that permits high and neutral transmission of visible light.

REFERENCES:
patent: 3410710 (1968-11-01), Mochel
patent: 3679291 (1972-07-01), Apfel et al.
patent: 3978272 (1976-08-01), Donley
patent: 4022947 (1977-05-01), Grubb et al.
Baumeister, P. and Pincus, G. "Optical Interference Coatings" Scientific American Dec. 1970 pp. 59-75.
William J. King, Interference Film Coloring Method (1974) Disclosure Document No. 032243 (unpublished).

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