Granted Patent
B2
US 8,159,748 · App. 11/968,761 · Granted Apr 17, 2012
Optical article and manufacturing method thereof
Assignee:
Seiko Epson Corporation
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Abstract
An optical article includes: an optical base; and a layer that is provided on the optical base and contains SiO 2 as a main component, the layer being a silicon-nitride-containing silicon oxide layer containing Si s O t Nu (s>0, T≧0, u>0).
Claims (4)
1. An optical article, comprising:
an optical base for a spectacle lens base; and
an anti-reflection layer constructed by a plurality of layers provided on the optical base, wherein:
at least one layer of the plurality of layers contains SiO 2 as a main component, the at least one layer also containing Si s O t N u (s>0, t≧0, u>0), such that the at least one layer contains SiO 2 and Si s O t N u .
Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Jul 18, 2013
From: SEIKO EPSON CORPORATION
To: HOYA LENS MANUFACTURING PHILIPPINES INC.
Reel/Frame 030822/0408 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Jan 3, 2008
From: FUKUI, TOMOHITO; SUZUKI, KEIICHI
To: SEIKO EPSON CORPORATION
Reel/Frame 020311/0522 →
Priority Claims (1)
JP 2007-012786
· Jan 23, 2007
· national
Continuity (1)