The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 01, 2011
Filed:
Oct. 31, 2007
Yoshihiro Akahane, Itami, JP;
Takahiro Imai, Itami, JP;
Takashi Matsuura, Itami, JP;
Tetsuya Katayama, Itami, JP;
Toshihiko Ushiro, Itami, JP;
Yoshihiro Akahane, Itami, JP;
Takahiro Imai, Itami, JP;
Takashi Matsuura, Itami, JP;
Tetsuya Katayama, Itami, JP;
Toshihiko Ushiro, Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Abstract
An Si—O containing hydrogenated carbon film as an optical film has a refractive index in a range from at least 1.48 to at most 1.85 for light of 520 nm wavelength and an extinction coefficient of less than 0.15 for light of 248 nm wavelength, wherein the refractive index and the extinction coefficient are decreased with energy beam irradiation. By utilizing such an Si—O containing hydrogenated carbon film, it is possible to provide various types of optical elements and an optical device including the same.