Elemental semiconductor mirror

Details Elemental semiconductor mirror Elemental semiconductor mirror

1999-05-17

2000-05-23

Spyrou, Cassandra

Optical: systems and elements

Glare or unwanted light reduction

With mirror

359604, 359584, 359586, 359587, 359588, 359589, G02B 508

Patent

active

060658401

ABSTRACT:
An elemental mirror having a high luminous reflectance of at least about 60% of incident light at the wavelength region of about 550 nanometers and being acromatic includes a substrate coated with a reflector comprising a multilayer thin film stack. The thin film stack comprises a first thin film layer of an elemental semiconductor which is closest to the first surface of the glass substrate and has a refractive index of greater than 3.0, a second thin film layer which is farthest from the first surface of the glass substrate, and a third thin film layer disposed between the first thin film layer and the second thin film layer, the third thin film layer having a refractive index between about 1.3 and 2.7, the second thin film layer having a refractive index greater than the third thin film layer. A light absorbing coating is included on at least one surface of the substrate and a layer of the reflector, the light absorbing coating absorbing light transmitted by the reflector coated substrate. Alternately, the multilayer thin film stack may be coated on the second surface of the glass substrate with the light absorbing coating disposed on the reflector coated second surface of the glass substrate. The elemental semiconductor may comprise silicon or germanium. The light absorbing coating may comprise one of a paint, a lacquer, a tape, a ceramic, a hot melt plastic, a resinous plastic, a plastisol, or an epoxy material.

REFERENCES:
patent: 2427689 (1947-09-01), Osterberg et al.
patent: 2478817 (1949-08-01), Gaiser
patent: 2519722 (1950-08-01), Turner
patent: 2590906 (1952-04-01), Tripp
patent: 2715352 (1955-08-01), Jobe
patent: 2750832 (1956-06-01), Morgan
patent: 2999034 (1961-09-01), Heidenhain
patent: 3412575 (1968-11-01), Feldman et al.
patent: 3556640 (1971-01-01), Austin
patent: 3559090 (1971-01-01), Refermat et al.
patent: 3652318 (1972-03-01), Heins
patent: 3671286 (1972-06-01), Fischell
patent: 3679291 (1972-07-01), Apfel et al.
patent: 3826728 (1974-07-01), Chambers et al.
patent: 3834793 (1974-09-01), McConnell et al.
patent: 3925182 (1975-12-01), Carmichael et al.
patent: 3926508 (1975-12-01), Harmsen et al.
patent: 3934061 (1976-01-01), Keck et al.
patent: 4032954 (1977-06-01), Grinberg et al.
patent: 4048039 (1977-09-01), Daxinger
patent: 4144684 (1979-03-01), Kirkbride et al.
patent: 4320155 (1982-03-01), Gillery
patent: 4322130 (1982-03-01), Ito et al.
patent: 4388344 (1983-06-01), Shuskus et al.
patent: 4444467 (1984-04-01), Shuskus et al.
patent: 4490227 (1984-12-01), Bitter
patent: 4490228 (1984-12-01), Bodin et al.
patent: 4545646 (1985-10-01), Chern et al.
patent: 4627732 (1986-12-01), Braun et al.
patent: 4673248 (1987-06-01), Taguchi et al.
patent: 4715879 (1987-12-01), Schmitte et al.
patent: 4805989 (1989-02-01), Nakajima
patent: 4857094 (1989-08-01), Groth et al.
patent: 4870322 (1989-09-01), Matsudaira et al.
patent: 4921331 (1990-05-01), Nakajima
patent: 4955705 (1990-09-01), Nakajima et al.
patent: 5007710 (1991-04-01), Nakajima et al.
patent: 5072109 (1991-12-01), Aguilera et al.
patent: 5171414 (1992-12-01), Amberger et al.
patent: 5179471 (1993-01-01), Caskey et al.
patent: 5181141 (1993-01-01), Sato et al.
patent: 5341238 (1994-08-01), Trost et al.
patent: 5535056 (1996-07-01), Caskey et al.
patent: 5751489 (1998-05-01), Caskey et al.
"Blue Mirror" vehicular rearview mirror element on sale in the United States for more than one year by Donnelly Corporation, Holland, Michigan.

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