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Title:
OPTICAL THIN FILM, OPTICAL ELEMENT, OPTICAL SYSTEM AND METHOD FOR PRODUCING OPTICAL THIN FILM
Document Type and Number:
WIPO Patent Application WO/2018/179825
Kind Code:
A1
Abstract:
Provided are: an optical thin film which is provided with a flat ultra-thin silver-containing metal layer; a method for producing this optical thin film; an optical element which is provided with this optical thin film; and an optical system which is provided with this optical element. An optical thin film which is obtained by sequentially laminating, from the base material side, an intermediate layer, a silver-containing metal layer that contains silver, and a dielectric layer in this order, and wherein: an anchor metal diffusion control layer that has a Hamaker constant of 7.3 × 10-20 J or more is provided between the intermediate layer and the silver-containing metal layer; an anchor region which contains an oxide of the anchor metal and has a surface energy that is less than the surface energy of the silver-containing metal layer but larger than the surface energy of the anchor metal diffusion control layer is provided between the anchor metal diffusion control layer and the silver-containing metal layer; a cap region which contains an oxide of the anchor metal is provided between the silver-containing metal layer and the dielectric layer; and the total film thickness of the silver-containing metal layer, the anchor region and the cap region is 6 nm or less.

Inventors:
UMEDA, Kenichi (577 Ushijima, Kaisei-machi, Ashigarakami-gu, Kanagawa 77, 〒2588577, JP)
NAKAMURA, Seigo (577 Ushijima, Kaisei-machi, Ashigarakami-gu, Kanagawa 77, 〒2588577, JP)
SONODA, Shinichiro (577 Ushijima, Kaisei-machi, Ashigarakami-gu, Kanagawa 77, 〒2588577, JP)
ITAI, Yuichiro (577 Ushijima, Kaisei-machi, Ashigarakami-gu, Kanagawa 77, 〒2588577, JP)
Application Number:
JP2018/003485
Publication Date:
October 04, 2018
Filing Date:
February 01, 2018
Export Citation:
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Assignee:
FUJIFILM CORPORATION (26-30, Nishiazabu 2-chome Minato-k, Tokyo 20, 〒1068620, JP)
International Classes:
G02B1/116; B32B15/01; G02B1/118; G02B15/20
Domestic Patent References:
WO2016189848A12016-12-01
Foreign References:
JP2001324601A2001-11-22
JP2014098885A2014-05-29
JP2013238709A2013-11-28
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (3-17, Shinjuku 4-chome Shinjuku-k, Tokyo 22, 〒1600022, JP)
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