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US4457598A
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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: 1984-07-03
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Expires: 2001-12-22
Abstract
Abstract A reflector includes a base body exhibiting dielectric property at least at its surface. A reflecting layer made of aluminum is formed on one surface of the base body by vacuum deposition. 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 sealing agent comprising H 2 O or a carboxylate of an iron family element having a low valence.
Inventors
- 👤 Hajime Shimabukuro
- 👤 Shuichi Watanabe
- 👤 Shitomi Katayama
- 👤 Akira Ohno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:41
CPC Classifications
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; Y10T428/12542; Y10T428/12549; Y10T428/12556; Y10T428/12569; Y10T428/12597; Y10T428/12604
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
74 words
A reflector comprising a base body exhibiting dielectric property at least at its surface, an aluminum reflecting layer vacuum deposited on one surface of said base body directly or through a smoothing layer, a light-transmitting water-insoluble inorganic oxide layer directly vacuum deposited on said reflecting layer, and a sealing agent comprising H 2 O or a carboxylate of an iron family element having a low valence and sealing micropores of said inorganic oxide layer.
Claim 2
Dependent Claim
74 words
A reflector comprising a base body exhibiting dielectric property at least at its surface, an aluminum reflecting layer vacuum deposited on one surface of said base body directly or through a smoothing layer, a light-transmitting water-insoluble inorganic oxide layer directly vacuum deposited on said reflecting layer, and a sealing agent comprising H 2 O or a carboxylate of an iron family element having a low valence and sealing micropores of said inorganic oxide layer.
Claim 3
Dependent Claim
16 words
A reflector according to claim 1, wherein said base body is formed of a dielectric material.
Claim 4
Dependent Claim
22 words
A reflector according to claim 1 or 2, wherein said reflecting layer is formed on said base body through said smoothing layer.
Claim 5
Dependent Claim
20 words
A reflector according to claim 3, wherein said smoothing layer is formed of an inorganic compound or a resin paint.
Claim 6
Dependent Claim
26 words
A reflector according to claim 1, further including an insulating layer which covers at least side faces of said base body and said reflecting layer, respectively.
Claim 7
Dependent Claim
18 words
A reflector according to claim 5, wherein said insulating layer further covers side faces of said smoothing layer.
Claim 8
Dependent Claim
22 words
A reflector according to claim 5 or 6, wherein said insulating layer further covers side faces of said light-transmitting inorganic oxide layer.
Claim 9
Dependent Claim
18 words
A reflector according to claim 1, wherein said reflecting layer has a thickness of 500 to 2,000 Å.
Claim 10
Dependent Claim
20 words
A reflector according to claim 1, wherein said light-transmitting inorganic oxide layer has a thickness of 0.5 to 5 μm.
Claim 11
Independent Claim
111 words
A method for manufacturing a reflecting mirror comprising the steps of: (a) forming a reflecting layer by directly depositing aluminum on one surface of a base body exhibiting dielectric property at least at its surface or by depositing aluminum on one surface of said base body through a smoothing layer by vacuum deposition; (b) forming a light-transmitting protective layer on said reflecting layer by directly depositing a water-insoluble inorganic oxide material thereon by vacuum deposition to provide a reflector intermediate product; and (c) sealing micropores of said protective layer by treating with a sealing agent comprising H 2 O or a carboxylate of an iron family metal having a low valence.
Claim 12
Independent Claim
111 words
A method for manufacturing a reflecting mirror comprising the steps of: (a) forming a reflecting layer by directly depositing aluminum on one surface of a base body exhibiting dielectric property at least at its surface or by depositing aluminum on one surface of said base body through a smoothing layer by vacuum deposition; (b) forming a light-transmitting protective layer on said reflecting layer by directly depositing a water-insoluble inorganic oxide material thereon by vacuum deposition to provide a reflector intermediate product; and (c) sealing micropores of said protective layer by treating with a sealing agent comprising H 2 O or a carboxylate of an iron family metal having a low valence.
Claim 13
Dependent Claim
20 words
A method according to claim 10, wherein said smoothing layer is formed directly on the surface of said base body.
Claim 14
Dependent Claim
39 words
A method according to claim 10 or 11, including the step of forming an insulating layer which covers side faces of at least said base body, said smoothing layer and said reflecting layer, respectively, between steps (a) and (b).
Claim 15
Dependent Claim
42 words
A method according to claim 10 or 11, including the step of forming said insulating layer which covers side faces of at least said base body, said smoothing layer, said reflecting layer and said protective layer, respectively, between steps (b) and (c).
Claim 16
Dependent Claim
40 words
A method according to claim 10 or 11, including the step of forming said insulating layer which covers side faces of at least said base body, said smoothing layer, said reflecting layer and said protective layer, respectively, after step (c).
Claim 17
Dependent Claim
20 words
A method according to claim 10, wherein said reflecting layer is formed to a thickness of 500 to 2,000 Å.
Claim 18
Dependent Claim
20 words
A method according to claim 10, wherein said protective layer is formed to a thickness of 0.5 to 5 μm.
Claim 19
Dependent Claim
45 words
A method according to claim 10, wherein the step (c) comprises immersing at least 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 20
Dependent Claim
30 words
A method according to claim 10, 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 21
Independent Claim
49 words
A method according to 10, wherein the step (c) comprises conducting electroysis in an aqueous solution of the carboxylate, using the reflecting layer of the intermediate product as a cathode, and a metal piece as an anode which is the same kine as the metal of the carboxylate used.
Claim 22
Independent Claim
49 words
A method according to 10, wherein the step (c) comprises conducting electroysis in an aqueous solution of the carboxylate, using the reflecting layer of the intermediate product as a cathode, and a metal piece as an anode which is the same kine as the metal of the carboxylate used.
Claim 23
Dependent Claim
35 words
A method according to claim 19, 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 24
Independent Claim
39 words
A method according to any one of claims 17 to 20, 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 25
Dependent Claim
33 words
A method according to claim 10, 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 26
Dependent Claim
47 words
A method according to claim 10, 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 in not peeled from the reflecting layer.
Claim 27
Dependent Claim
20 words
A method according to claim 23, wherein the step (c) is conducted at 100° C. for 5 to 20 minutes.
Claim 28
Dependent Claim
20 words
A method according to claim 23, wherein the step (c) is conducted at 150° C. for 2 to 10 minutes.
Claim 29
Dependent Claim
20 words
A method according to claim 23, wherein the step (c) is conducted at 200° C. for 1 to 5 minutes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1987-07-03 | 1988-01-02 | 1988-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-03 | 1992-01-02 | 1992-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-03 | 1996-01-02 | 1996-07-03 | $7700.00 | Window Closed / Lapsed |