Optical element and optical equipment
OwnerKoji Suzuki, Ken Kawamatainventors
Life of this patent
Estimating the term…
Abstract
The optical element includes a substrate and optical thin film formed in multiple layers on the surface of the pertinent substrate, wherein the optical thin film is provided with low refractive index layers composed of material with a lower refractive index than that of the substrate, and high refractive index layers of which at least 1 layer is composed of material whose primary component is oxide and which have a refractive index higher than that of the low refractive index layers, and wherein at least 1 layer of the optical thin film composed of low refractive index layers and high refractive index layers contains at least one of metal ions selected from among Cu, Fe, Au, Ag, Cr, Mn, Co, and Ni.
Claims7
An optical element comprising a substrate and optical thin film formed in multiple layers on the surface of the pertinent substrate,
- wherein said optical thin film is provided with low refractive index layers composed of material with a lower refractive index than that of said substrate,
- and high refractive index layers of which at least 1 layer is composed of material whose primary component is oxide and which have a refractive index higher than that of said low refractive index layers,
- and wherein at least 1 layer of said optical thin film composed of said low refractive index layers and said high refractive index layers contains at least one of metal ions selected from among Cu, Fe, Au, Ag, Cr, Mn, Co, and Ni.
An optical element comprising a substrate and optical thin film formed on the surface of the pertinent substrate,
- wherein said optical thin film is provided with a first layer composed of material whose main component is SiO2 or MgF2,
- and a second layer composed of Cu, O and at least one of Ta, Nb, Ti, W, Zr, Hf, Ce, La, and Bi,
- and wherein said first layer is the layer formed at the position which is farthest away from said substrate among the layers configuring said optical thin film.
Dependencies are inferred from the claim text.