Title:
OPTICAL MEMBER AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/111780
Kind Code:
A1
Abstract:
The present invention provides: a lightweight optical member which can be produced at relatively low cost and which provides low reflectance, stability upon exposure to light, and abrasion resistance; and an efficient method for producing such an optical member. An optical member according to the present invention is characterized by comprising: a metallic base material; a low-reflective treatment layer formed on the surface of the metallic base material; and a silica layer formed on the surface of the low-reflective treatment layer. It is preferable for the silica layer to have a layer thickness of 0.1-10 μm.
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Inventors:
IIZUKA AKIRA (JP)
OSHIMA TAKESHI (JP)
NAKANO KOICHI (JP)
OSHIMA TAKESHI (JP)
NAKANO KOICHI (JP)
Application Number:
PCT/JP2020/040655
Publication Date:
June 10, 2021
Filing Date:
October 29, 2020
Export Citation:
Assignee:
NIPPON LIGHT METAL CO (JP)
International Classes:
G02B1/111; C01B33/12; C23C26/00; C23C28/04; C25D11/18; C25D11/22; C25D11/26; G02B1/10; G03F1/64
Foreign References:
| JPS63213695A | 1988-09-06 | |||
| JP2005076092A | 2005-03-24 | |||
| JPH04341581A | 1992-11-27 | |||
| JP2017179479A | 2017-10-05 | |||
| US20080261033A1 | 2008-10-23 | |||
| US20060019035A1 | 2006-01-26 | |||
| JP2010237282A | 2010-10-21 | |||
| JPH0743892B2 | 1995-05-15 | |||
| JP2016177120A | 2016-10-06 | |||
| JPH0743892A | 1995-02-14 |
Other References:
See also references of EP 4071522A4
Attorney, Agent or Firm:
IPR CONSULTANT PPC (JP)
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