| 摘要 |
<p>In an optical reflector and a manufacturing method thereof, the reflector has superior durability and a high reflectivity to visible light, without color tones being apparent in the reflected light. The optical reflector comprises a glass substrate (1), on which are piled up a film (2) of refractive index n1, a film (3) of refractive index n2, a film (4) of refractive index n3, and a film (5) of refractive index n4, sequentially, wherein the thickness of the films are adjusted so that a relationship, n1 ≥ n4 > n3 > n2, is established among those refractive indices n1, n2, n3 and n4. The film (3) of refractive index n2 is from 30 nm to 60 nm in the film thickness, a reflectivity to visible light is equal to or greater than 75% upon the surface of the film (5) of refractive index n4, and the value <MATH> is from 0 to 10 when representing the color tone of reflected light upon this film by a* and b* (psychometric chroma coordinates). <IMAGE></p> |
