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:
Sep. 19, 2017
Filed:
May. 10, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Akiko Takei, Fujisawa, JP;
Zuyi Zhang, Yokohama, JP;
Yoshinori Kotani, Yokohama, JP;
Akira Sugiyama, Yokohama, JP;
Kenji Takashima, Tokyo, JP;
Naoyuki Koketsu, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An optical member including a porous glass layer on a base member is provided, wherein the reflectance is reduced and a ripple is suppressed. The optical member is provided with a base member and a glass layer holding a transparent material in the inside of a porous structure disposed on the base member, wherein in the thickness direction of the glass layer, the porosity in the base member side with respect to the center line of the glass layer in the thickness direction is smaller than the porosity in the side opposite to the base member with respect to the center line of the glass layer in the thickness direction.