US4431268A
Expired / Lapsed
US
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Reflector and method for manufacturing the same
Assignee: NHK Spring Co Ltd
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Filing: 1981-12-22
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Granted: 1984-02-14
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Expires: 2001-12-22
Abstract
Abstract A reflector has a base body which is made of a metallic material having an ionization potential substantially higher than that of aluminum. An aluminum reflecting layer is formed on one surface of the base body by vacuum deposition. Furthermore, a light-transmitting water-insoluble inorganic oxide layer is formed on the aluminum reflecting layer. The light-transmitting inorganic oxide layer has its micropores sealed by H 2 O or a carboxylate of an iron family element having a low valence. An insulating layer is formed to cover at least the other surface and the peripheral side of the base body.
Inventors
- 👤 Akira Ohno
- 👤 Hajime Shimabukuro
- 👤 Shitomi Katayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:30
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/08; C23C14/58; G02B1/105; G; G02; G02B; G02B1/00; G02B1/10; G02B1/14; G02B5/00; G02B5/08; G02B5/0808; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12597; Y10T428/12604; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
100 words
A reflector comprising: a base body made of a metallic material having an ionization potential substantially higher than that of aluminum; an aluminum reflecting layer vacuum deposited on one surface of said base body directly or through a smoothing layer formed on the base body; a light-transmitting water-insoluble inorganic oxide layer vacuum deposited on said reflecting layer; an insulating layer covering at least the other surface and peripheral sides of said base body; and a sealing agent comprising H 2 O or a carboxylate of an iron family element of low valence and sealing micropores of said inorganic oxide layer.
Claim 2
Dependent Claim
100 words
A reflector comprising: a base body made of a metallic material having an ionization potential substantially higher than that of aluminum; an aluminum reflecting layer vacuum deposited on one surface of said base body directly or through a smoothing layer formed on the base body; a light-transmitting water-insoluble inorganic oxide layer vacuum deposited on said reflecting layer; an insulating layer covering at least the other surface and peripheral sides of said base body; and a sealing agent comprising H 2 O or a carboxylate of an iron family element of low valence and sealing micropores of said inorganic oxide layer.
Claim 3
Dependent Claim
20 words
A reflector according to claim 1, wherein said reflecting layer is formed on said base body through the smoothing layer.
Claim 4
Dependent Claim
20 words
A reflector according to claim 2, wherein said smoothing layer is formed of an inorganic compound or a resin paint.
Claim 5
Dependent Claim
18 words
A reflector according to claim 2, wherein said insulating layer also covers peripheral side of said smoothing layer.
Claim 6
Dependent Claim
24 words
A reflector according to any one of claims 1 to 4, wherein said insulating layer also covers the peripheral side of said reflecting layer.
Claim 7
Dependent Claim
19 words
A reflector according to claim 5, wherein said insulating layer also covers peripheral side of said inorganic oxide layer.
Claim 8
Dependent Claim
18 words
A reflector according to claim 1, wherein said reflecting layer has a thickness of 500 to 2,000 Å.
Claim 9
Dependent Claim
19 words
A reflector according to claim 1, wherein said inorganic oxide layer has a thickness of 0.5 to 5 μm.
Claim 10
Independent Claim
136 words
A method for manufacturing a reflector comprising the steps of: (a) forming a reflecting layer by vacuum depositing aluminum directly on one surface of a base body made of a metallic material having an ionization potential substantially higher than that of aluminum, or by vacuum depositing aluminum on one surface of said base body through a smoothing layer; (b) forming a light-transmitting protective layer on said reflecting layer by directly depositing a waterinsoluble inorganic oxide material thereon to provide an intermediate product; (c) forming an insulating layer covering at least the other surface and the peripheral side of said base body; and (d) sealing micropores of said protective layer by treating with a sealing agent selected from the group consisting of H 2 O and a carboxylate of an iron family metal having a low valence.
Claim 11
Independent Claim
136 words
A method for manufacturing a reflector comprising the steps of: (a) forming a reflecting layer by vacuum depositing aluminum directly on one surface of a base body made of a metallic material having an ionization potential substantially higher than that of aluminum, or by vacuum depositing aluminum on one surface of said base body through a smoothing layer; (b) forming a light-transmitting protective layer on said reflecting layer by directly depositing a waterinsoluble inorganic oxide material thereon to provide an intermediate product; (c) forming an insulating layer covering at least the other surface and the peripheral side of said base body; and (d) sealing micropores of said protective layer by treating with a sealing agent selected from the group consisting of H 2 O and a carboxylate of an iron family metal having a low valence.
Claim 12
Dependent Claim
19 words
A method according to claim 9, wherein said smoothing layer is formed on the surface of said base body.
Claim 13
Dependent Claim
18 words
A method according to claim 9 or 10, wherein said step (a) is conducted after said step (c).
Claim 14
Dependent Claim
25 words
A method according to claim 9 or 10, wherein said step (c) is conducted after said step (a), and said step (b) is conducted thereafter.
Claim 15
Dependent Claim
20 words
A method according to claim 9 or 10, wherein said step (c) is conducted after said steps (a) and (b).
Claim 16
Dependent Claim
22 words
A method according to claim 9 or 10, wherein said reflecting layer is formed to a thickness of 500 to 2,000 Å.
Claim 17
Dependent Claim
22 words
A method according to claim 9 or 10, wherein said protective layer is formed to a thickness of 0.5 to 5 μm.
Claim 18
Dependent Claim
43 words
A method according to claim 9, wherein the step (d) comprises immersing said protective layer in an aqueous solution of the carboxylate under atmospheric pressure or under pressurized conditions at a temperature of 0° to 200° C. for 1 second to 1 hour.
Claim 19
Dependent Claim
30 words
A method according to claim 9, wherein the step (c) comprises spraying said protective layer with an aqueous solution of the carboxylate at a temperature of 0° to 200° C.
Claim 20
Dependent Claim
50 words
A method according to claim 9, wherein the step (c) comprises conducting electrolysis in an aqueous solution of the carboxylate, using the base body of the intermediate product as a cathode, and a metal piece as an anode which is the same kind as the metal of the carboxylate used.
Claim 21
Dependent Claim
35 words
A method according to claim 18, wherein the electrolysis is performed at a voltage of 10 V or less and a current density of 500 mA/cm 2 or less for 5 seconds to 1 hour.
Claim 22
Independent Claim
41 words
A method according to any one of claims 9, 17, 18 or 19, wherein a carboxylic acid component of the carboxylate is selected from the group consisting of acetic acid, propionic acid, butyric acid, lactic acid, citric acid, and tartaric acid.
Claim 23
Dependent Claim
33 words
A method according to claim 9, wherein the step (c) comprises immersing the protective layer in boiling water at a pH of 5 to 9 for a period of time within 20 minutes.
Claim 24
Dependent Claim
47 words
A method according to claim 9, wherein the step (c) comprises allowing the protective layer to stand in a saturated water vapor at a temperature of up to 200° C. for a period of time such that the protective layer is not peeled from the reflecting layer.
Claim 25
Dependent Claim
20 words
A method according to claim 22, wherein the step (c) is conducted at 100° C. for 5 to 20 minutes.
Claim 26
Dependent Claim
20 words
A method according to claim 22, wherein the step (c) is conducted at 150° C. for 2 to 10 minutes.
Claim 27
Dependent Claim
20 words
A method according to claim 22, wherein the step (c) is conducted at 200° C. for 1 to 5 minutes.
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US4364637A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-13 | 1987-08-15 | 1988-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-13 | 1991-08-15 | 1992-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-13 | 1995-08-15 | 1996-02-14 | $7700.00 | Window Closed / Lapsed |