Title:
LIGHT BLOCKING FILM, MULTILAYER ANTIREFLECTION FILM, METHOD FOR PRODUCING SAID LIGHT BLOCKING FILM, METHOD FOR PRODUCING SAID MULTILAYER ANTIREFLECTION FILM, AND OPTICAL MEMBER
Document Type and Number:
WIPO Patent Application WO/2023/042438
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: a light blocking film and a multilayer antireflection film, each of which has excellent light blocking properties, antireflection properties and chemical stability; a method for producing this light blocking film or this multilayer antireflection film, the method being suppressed in deviation between the design value and the measured value; and an optical member. The present invention provides a light blocking film which comprises at least a light blocking layer and one or more layers that are in contact with the light blocking layer, and which is characterized in that: the light blocking layer contains chromium and silicon dioxide; and at least one of the one or more layers that are in contact with the light blocking layer contains a compound other than an oxide.
Inventors:
NOSE MASAAKI (JP)
AOKI YOSUKE (JP)
AOKI YOSUKE (JP)
Application Number:
PCT/JP2022/011218
Publication Date:
March 23, 2023
Filing Date:
March 14, 2022
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
G02B5/00; C23C14/06; G02B1/115
Domestic Patent References:
| WO2020104392A2 | 2020-05-28 |
Foreign References:
| JP2017167557A | 2017-09-21 | |||
| JPH07301907A | 1995-11-14 | |||
| JP2002156743A | 2002-05-31 | |||
| JPH03182752A | 1991-08-08 | |||
| JPH01252926A | 1989-10-09 | |||
| JP3211797U | 2017-08-03 |
Attorney, Agent or Firm:
KOYO INTERNATIONAL PATENT FIRM (JP)
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