Invention Grant
- Patent Title: Laminate of optical elements having a layer of a pressure-sensitive adhesive, and a method for producing such laminate of optical elements
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Application No.: US14891492Application Date: 2015-01-16
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Publication No.: US10852455B2Publication Date: 2020-12-01
- Inventor: Toru Umemoto , Hirofumi Katami , Hiroyuki Takao , Takahiro Nonaka , Atsushi Yasui , Takami Hikita
- Applicant: NITTO DENKO CORPORATION
- Applicant Address: JP Ibaraki
- Assignee: NITTO DENKO CORPORATION
- Current Assignee: NITTO DENKO CORPORATION
- Current Assignee Address: JP Ibaraki
- Agency: Hauptman Ham, LLP
- Priority: JP2014-007310 20140117; JP2014-007311 20140117
- International Application: PCT/JP2015/051130 WO 20150116
- International Announcement: WO2015/108159 WO 20150723
- Main IPC: G02B1/111
- IPC: G02B1/111 ; B32B7/12 ; B32B27/08 ; B32B27/36 ; B32B27/06 ; B32B7/02 ; B32B37/12 ; C09J7/38 ; C09J11/02 ; C09J11/04 ; C09J5/02 ; B29D11/00

Abstract:
A laminate of optical elements comprises a transparent first optical element, a second optical element, and a transparent pressure-sensitive adhesive layer for bonding the first optical element to the second optical element. The pressure-sensitive adhesive layer comprises a base adhesive zone, a transparent refractive index-adjusting zone. The base adhesive zone is made essentially of a transparent base pressure-sensitive adhesive material and formed over a given range from a first principal surface of the pressure-sensitive adhesive layer facing the first optical element, in a thickness direction of the pressure-sensitive adhesive layer. The a transparent, adherent, refractive index-adjusting zone is formed over a given range from a second principal surface of the pressure-sensitive adhesive layer facing the second optical element.
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