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. 08, 2016
Filed:
Nov. 12, 2012
Canon Kabushiki Kaisha, Tokyo, JP;
Naoyuki Koketsu, Tokyo, JP;
Zuyi Zhang, Yokohama, JP;
Yoshinori Kotani, Yokohama, JP;
Akiko Takei, Fujisawa, JP;
Akira Sugiyama, Yokohama, JP;
Kenji Takashima, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides an optical member including a porous glass film on a base member, wherein a ripple is suppressed. The optical member includes the base member and the porous glass film disposed on the base member, wherein the porosity increases in the direction from the base member toward the porous glass film in an interfacial region between the base member and the porous glass film and the porosity is continuous in the film thickness direction from the base member to the surface of the porous glass film in the optical member.