Hydrophilic mirror and method of producing the same
First Claim
1. A hydrophilic mirror comprising a glass substrate having coated on one of the two main surface sides thereof (A) a layer having a refractive index n1 at 550 nm, (B) a layer having a refractive index n2 at 550 nm, (C) a titanium oxide layer having a refractive index n3 at 550 nm, and (D) an overcoat in this order, the refractive indices n1, n2, and n3 satisfying the relationship:
- n1≧
n3>
n2, and said hydrophilic mirror having, a reflectance of 70% or more of visible igaht incident on the coated side, wherein said overcoat (D) both (i) is of at least one of silicon oxide, aluminum oxide, zirconium oxide, cerium oxide, and a mixed oxide of titanium oxide and either silicon oxide, aluminum oxide, zirconium oxide, or cerium oxide and (ii) has a silicon oxide content of 80% or more.
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Abstract
A hydrophilic mirror comprising a glass substrate having on the main surface side thereof a layer having a refractive index n1 at 550 nm, a layer having a refractive index n2 at 550 nm, a titanium oxide layer having a refractive index n3 at 550 nm, and an overcoat in this order, the refractive indices n1, n2 and n3 satisfying the relationship: n1≧n3>n2, and having a visible light reflectance of 70% or more.
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Citations
15 Claims
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1. A hydrophilic mirror comprising a glass substrate having coated on one of the two main surface sides thereof (A) a layer having a refractive index n1 at 550 nm, (B) a layer having a refractive index n2 at 550 nm, (C) a titanium oxide layer having a refractive index n3 at 550 nm, and (D) an overcoat in this order, the refractive indices n1, n2, and n3 satisfying the relationship:
- n1≧
n3>
n2, and said hydrophilic mirror having, a reflectance of 70% or more of visible igaht incident on the coated side, wherein said overcoat (D) both (i) is of at least one of silicon oxide, aluminum oxide, zirconium oxide, cerium oxide, and a mixed oxide of titanium oxide and either silicon oxide, aluminum oxide, zirconium oxide, or cerium oxide and (ii) has a silicon oxide content of 80% or more. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- n1≧
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13. A method of producing a hydrophilic mirror comprising coating on the main surface side of a glass substrate (A) a layer having a refractive index n1 at 550 nm, (B) a layer having a refractive index n2 at 550 nm, (C) a a titanium oxide layer having a refractive index n3 at 550 nm, and (D) a an overcoat in this order, the refractive indices n1, n2, and n3 satisfying the relationship:
- n1≧
n3>
n2 and said hydrophilic mirror having a reflectance of 70% or more of visible light incident on the coated side, wherein said overcoat (D) both (i) is of at least one of silicon oxide, aluminum oxide, zirconium oxide, cerium oxide, and a mixed oxide of titanium oxide and either silicon oxide, aluminum oxide, zirconium oxide, or cerium oxide and (ii) has a silicon oxide content of 80% or more. - View Dependent Claims (14, 15)
- n1≧
Specification