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Title:
プラスチックレンズ、光学機器、およびプラスチックレンズの製造方法
Document Type and Number:
Japanese Patent JP6765840
Kind Code:
B2
Abstract:
A lens portion, a rib portion formed outside the lens portion, and a protruding portion protruding outward from a part of the rib portion are included, and the thickness of the rib portion is 1.4 times or more the thickness of an aperture end of a lens surface of the lens portion.

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Inventors:
Shinohara Atsushi
Application Number:
JP2016078358A
Publication Date:
October 07, 2020
Filing Date:
April 08, 2016
Export Citation:
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Assignee:
Canon Inc
International Classes:
B29C45/37; B29C45/40; G02B3/00
Domestic Patent References:
JP2010012693A
JP4204409A
JP9197239A
JP2014044423A
JP2009259393A
Foreign References:
WO2013132708A1
US20130308210
WO2009084377A1
WO2014156503A1
WO2010035619A1
WO2011037038A1
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa



 
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