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US 2010/0072406 A1Published application
Glass composition for ultraviolet light and optical device using the same
AssigneeCanon Kabushiki Kaisha
InventorsTomohiro Watanabe, Taihei Mukaide
Life of this patent
Estimating the term…
Abstract
A glass composition for ultraviolet light is provided. The glass composition for ultraviolet light contains Lu, Si, and O in an amount of 99.99 weight % or more in total. The glass composition contains Lu in an amount of 26% or more and 39% or less in cation percent and Si in an amount of 61% or more and 74% or less in cation percent.
Claims3
A glass composition for ultraviolet light, comprising:
- Lu, Si, and O in an amount of 99.99 weight % or more in total,
- wherein said glass composition contains Lu in an amount of 26% or more and 39% or less in cation percent and Si in an amount of 61% or more and 74% or less in cation percent.
An optical device comprising:
- a light source for generating ultraviolet light;
- and
- an optical system for irradiating an object with the ultraviolet light from said light source,
- wherein said optical system includes an optical member comprising a base material and/or an optical thin film, and
- wherein the base material and/or the optical thin film comprises a glass composition for ultraviolet light, comprising:
- Lu, Si, and O in an amount of 99.99 weight % or more in total,
- wherein said glass composition contains Lu in an amount of 26% or more and 39% or less in cation percent and Si in an amount of 61% or more and 74% or less in cation percent.
4 more elements
An optical device comprising:
- a light source for generating ultraviolet light;
- and
- an optical system for irradiating an object with the ultraviolet light from said light source,
- wherein said optical system includes a first optical member and a second optical member having a refractive index larger than that of the first optical member, and
- wherein the second optical member comprises a base material comprising a glass composition for ultraviolet light, comprising:
- Lu, Si, and O in an amount of 99.99 weight % or more in total,
- wherein said glass composition contains Lu in an amount of 26% or more and 39% or less in cation percent and Si in an amount of 61% or more and 74% or less in cation percent.
4 more elements
Dependencies are inferred from the claim text.