Title:
ANTIREFLECTION COATING
Document Type and Number:
Japanese Patent JP3502150
Kind Code:
B2
Abstract:
PURPOSE: To apply antireflection coating of a single layer thin film having an enough antireflection effect without giving colors to transmitted light.
CONSTITUTION: Both surfaces of a transparent base body 3 are coated with a material having lower refractive index than the transparent base body 3 to form low refractive index thin film layers 1, 2 for antireflection having different film thicknesses from each other. The refractive indices n1, n2 and geometric film thicknesses d1, d2 of the low refractive index film layers 1, 2, respectively, and designed standard wavelength λ0 satisfy the relation of optical film thickness 0.167λ0≤n1d1≤0.188λ0, and 0.259λ0≤n2d2≤0.278λ0.
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Inventors:
Hideki Miyata
Makoto Kimura
Makoto Kimura
Application Number:
JP12806294A
Publication Date:
March 02, 2004
Filing Date:
May 19, 1994
Export Citation:
Assignee:
Dai Nippon Printing Co.,Ltd.
International Classes:
G02B1/11; G02B1/113; (IPC1-7): G02B1/11
Domestic Patent References:
| JP3166932A |
Attorney, Agent or Firm:
Satoshi Kanayama
Previous Patent: JPH03502149
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