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:
Apr. 26, 2016
Filed:
Jan. 28, 2014
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Mitsuo Osawa, Tokyo, JP;
Masahiro Mori, Tokyo, JP;
Katsushi Miyake, Tokyo, JP;
Katsushi Kamijyo, Shizuoka-ken, JP;
Mitsuyuki Tatemura, Shizuoka-ken, JP;
ASAHI GLASS COMPANY, LIMITED, Chiyoda-ku, JP;
Abstract
An optical member has: a transparent substrate; and a dielectric multilayer on the transparent substrate formed by stacking a plurality of unit refractive index layers each formed of a high-refractive index layer having a refractive index of 2 or more and a low-refractive index layer having a refractive index of 1.6 or less. In the optical member, a total number of the unit refractive index layers is 15 or more, and a number of the unit refractive index layers satisfying a condition of nd/nd≧3 is 10 or more, ndrepresents an optical thickness of the high-refractive index layer, and ndrepresents an optical thickness of the low-refractive index layer.