Reflector and method for manufacturing the same
AssigneeNHK Spring Co., Ltd.
InventorsShitomi Katayama, Hajime Shimabukuro, Suguru Nomura, Hiroyuki Kurita, Akira Ohno
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Abstract
A reflector includes a base body made of a metallic material having substantially the same ionization potential as that of aluminum. A reflecting layer made of aluminum is formed over 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 H.sub.2 O a carboxylate of an iron family element having a low valence.
Claims29
A reflector comprising a base body made of a metallic material having substantially the same ionization potential as 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-formed insoluble inorganic oxide layer directly vacuum deposited on said reflecting layer, and a sealing agent comprising H.sub.2 O or a carboxylate of an iron family element having a low valence and sealing micropores of said inorganic oxide layer.
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 substantially the same ionization potential as that of aluminum, or by vacuum 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 to provide an intermediate product;
- and
- (c) sealing micropores of said protective layer by treating with a sealing agent selected from the group consisting of H.sub.2 O and a carboxylate of an iron family metal having a low valence.
Dependencies are inferred from the claim text.