Patent US3645601A successfully refreshed from Google Patents.
US3645601A
Expired / Lapsed
US
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Reflector for specularly reflecting visible radiation and diffusely reflecting heat radiation
Assignee: Bausch and Lomb Inc
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Filing: 1970-11-03
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Granted: 1972-02-29
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Expires: 1990-11-03
Abstract
Abstract A reflector, for reflecting generally all wavelengths of radiation of visible light for generally concentrated projection of the visible light and for reflecting substantially all wavelengths of radiation of heat in a generally random pattern, is provided for by a metallic substrate having a roughened irregular surface for randomly reflecting wavelengths of radiation of heat. An intermediate layer disposed immediately upon the roughened surface of the metallic substrate provides an optically smooth base over the roughened surface for deposition of a multilayer interference reflecting coating for reflecting in a concentrated projection generally all wavelengths of radiation of visible light. As a modification the intermediate layer includes impurities for diffusingly reflecting or absorbing heat radiation for added efficiency of heat dispersion.
Inventors
- 👤 Michael Doctoroff
- 👤 Bernt D Hoppert
- 👤 Steven H Leece
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:22
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/08; G02B5/10; G02B5/20; G02B5/28; G02B5/281; G02B5/282
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
110 words
A reflector for reflecting generally all wavelengths of radiation for providing visible light and for reflecting substantially all wavelengths of radiation for providing heat in a diffusing pattern, comprising: a metallic substrate having a roughened irregular surface; an intermediate layer disposed immediately upon the roughened irregular surface of the metallic substrate, said intermediate layer formed of a material suitable for providing a smooth surface; and a multilayer interference reflecting coating disposed upon the smooth surface of the intermediate layer for reflecting substantially all wavelengths of radiation for providing visible light and for transmitting therethrough to the roughened irregular surface of the metallic substrate substantially all wavelengths of radiation providing heat.
Claim 2
Dependent Claim
110 words
A reflector for reflecting generally all wavelengths of radiation for providing visible light and for reflecting substantially all wavelengths of radiation for providing heat in a diffusing pattern, comprising: a metallic substrate having a roughened irregular surface; an intermediate layer disposed immediately upon the roughened irregular surface of the metallic substrate, said intermediate layer formed of a material suitable for providing a smooth surface; and a multilayer interference reflecting coating disposed upon the smooth surface of the intermediate layer for reflecting substantially all wavelengths of radiation for providing visible light and for transmitting therethrough to the roughened irregular surface of the metallic substrate substantially all wavelengths of radiation providing heat.
Claim 3
Dependent Claim
17 words
The reflector as defined in claim 1, wherein the metallic substrate has a sandblasted roughened irregular surface.
Claim 4
Dependent Claim
15 words
The reflector as defined in claim 1, wherein the metallic substrate is formed of aluminum.
Claim 5
Dependent Claim
27 words
The reflector as defined in claim 1, wherein the intermediate layer disposed immediately upon the roughened irregular surface of the metallic substrate is formed of sprayed glass.
Claim 6
Dependent Claim
21 words
The reflector as defined in claim 1, wherein the intermediate layer includes an impurity for diffusingly reflecting wavelengths of heat radiation.
Claim 7
Dependent Claim
15 words
The reflector as defined in claim 5, wherein the impurity is a fine powdery material.
Claim 8
Dependent Claim
20 words
The reflector as defined in claim 1, wherein the intermediate layer includes an impurity for absorbing wavelengths of heat radiation.
Claim 9
Dependent Claim
15 words
The reflector as defined in claim 7, wherein the impurity is a fine powdery material.
Claim 10
Dependent Claim
111 words
A reflector for reflecting generally all wavelengths of radiation for providing visible light and for reflecting substantially all wavelengths of radiation for providing heat in a diffusing pattern, comprises: a metallic substrate formed of aluminum having a sandblasted roughened irregular surface; an intermediate layer disposed immediately upon the roughened irregular surface of the metallic substrate, said intermediate layer formed of sprayed glass for providing the smooth surface; and a multilayer interference reflecting coating disposed upon the smooth surface of the intermediate layer for reflecting substantially all wavelengths of radiation of visible light and for transmitting therethrough to the reflected irregular surface of the metallic substrate all wavelengths of radiation of heat.
Claim 11
Dependent Claim
111 words
A reflector for reflecting generally all wavelengths of radiation for providing visible light and for reflecting substantially all wavelengths of radiation for providing heat in a diffusing pattern, comprises: a metallic substrate formed of aluminum having a sandblasted roughened irregular surface; an intermediate layer disposed immediately upon the roughened irregular surface of the metallic substrate, said intermediate layer formed of sprayed glass for providing the smooth surface; and a multilayer interference reflecting coating disposed upon the smooth surface of the intermediate layer for reflecting substantially all wavelengths of radiation of visible light and for transmitting therethrough to the reflected irregular surface of the metallic substrate all wavelengths of radiation of heat.
References Cited (Backward Citations)
US2914989A
Cited
US3445662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |