Title:
OPTICAL PRODUCT AND METHOD FOR MANUFACTURING OPTICAL PRODUCT
Document Type and Number:
WIPO Patent Application WO/2022/168457
Kind Code:
A1
Abstract:
[Problem] To provide an optical product that has a film having a fine relief structure pertaining to a material other than aluminum or a compound thereof, and a manufacturing method whereby the optical product can easily be created. [Solution] An optical product 1 comprises a substrate 2 and an optical film 4 formed on a film formation surface F of the substrate 2. The optical film 4 has an Al2O3 layer 12 which is a layer made of Al2O3 disposed on the substrate 2 side, and a SiO2 layer 14 which is a layer made of SiO2 having a fine relief structure. A method for manufacturing the optical product 1 comprises: a step for forming, on the substrate 2, an Al-based manufacturing intermediate film which is aluminum, aluminum alloy, or an aluminum compound; and a step for immersing the substrate 2 provided with the Al-based manufacturing intermediate film in an aqueous solution of silica. The concentration of silica in the aqueous solution is 10 mg/L or less.
Inventors:
NISHIMOTO KEIJI (JP)
INOUE CHIAKI (JP)
INOUE CHIAKI (JP)
Application Number:
PCT/JP2021/046105
Publication Date:
August 11, 2022
Filing Date:
December 14, 2021
Export Citation:
Assignee:
TOKAI OPTICAL CO LTD (JP)
International Classes:
G02B1/118; G02B1/115
Foreign References:
| JP2012198330A | 2012-10-18 | |||
| JP2017107011A | 2017-06-15 | |||
| JP2009162989A | 2009-07-23 | |||
| JP2019124970A | 2019-07-25 | |||
| JP2008036605A | 2008-02-21 | |||
| JP2018089630A | 2018-06-14 | |||
| JP2010072046A | 2010-04-02 | |||
| JP2014138992A | 2014-07-31 | |||
| KR20080022254A | 2008-03-11 | |||
| JP2012198330A | 2012-10-18 |
Attorney, Agent or Firm:
ISHIDA Yoshiki (JP)
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