Invention Grant
- Patent Title: Method for producing optical member and optical member
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Application No.: US16078210Application Date: 2017-02-15
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Publication No.: US10996377B2Publication Date: 2021-05-04
- Inventor: Yasuhiro Shibai , Ken Atsumo , Hidekazu Hayashi
- Applicant: SHARP KABUSHIKI KAISHA
- Applicant Address: JP Sakai
- Assignee: SHARP KABUSHIKI KAISHA
- Current Assignee: SHARP KABUSHIKI KAISHA
- Current Assignee Address: JP Sakai
- Agency: ScienBiziP, P.C.
- Priority: JPJP2016-031428 20160222
- International Application: PCT/JP2017/005397 WO 20170215
- International Announcement: WO2017/145881 WO 20170831
- Main IPC: B32B27/30
- IPC: B32B27/30 ; G02B1/118 ; B32B3/30 ; B32B27/00 ; B32B23/08 ; B32B27/16 ; B32B27/22

Abstract:
The method for producing an optical member of the present invention includes: a step (1) of applying a lower layer resin and an upper layer resin; a step (2) of pressing a die against the lower layer resin and the upper layer resin from the upper layer resin side, so as to form a resin layer including an uneven structure on a surface thereof; and a step (3) of curing the resin layer to form the polymer layer, wherein the lower layer resin contains an amide group, the lower layer resin has an amide group concentration of 1.5 mmol/g or more and less than 5 mmol/g, and the polymer layer has a minimum storage modulus E′ of 1×108 Pa or higher and 1×109 Pa or lower at a bottom temperature of 110° C. or higher and 210° C. or lower.
Public/Granted literature
- US20190041549A1 METHOD FOR PRODUCING OPTICAL MEMBER AND OPTICAL MEMBER Public/Granted day:2019-02-07
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