Title:
LIGHT ABSORPTION LAYER, AND MEMBER HAVING LIGHT ABSORPTION LAYER
Document Type and Number:
Japanese Patent JP2023086192
Kind Code:
A
Abstract:
To provide a light absorption layer excellent in an absorption function for near-infrared rays and a member having such the light absorption layer.SOLUTION: A light absorption layer 10 has a plurality of recesses on one principal plane 10A. At least a part of the internal surfaces of the plurality of recesses is made of a nickel oxide compound. When near-infrared rays of 2 μm are irradiated toward the one principal plane 10A, the light absorption layer 10 has a total reflectance, which is a sum of a normal reflectance and a diffuse reflectance, of 2% or less. When the near-infrared rays of 780 nm-2 μm are irradiated towards the one principal plane 10A, the total reflectance is preferably 2% or less in any wavelength.SELECTED DRAWING: Figure 1
Inventors:
WATABE NAGISA
SHIRAI KEIICHI
SAITO AKINORI
SHIRAI KEIICHI
SAITO AKINORI
Application Number:
JP2021200543A
Publication Date:
June 22, 2023
Filing Date:
December 10, 2021
Export Citation:
Assignee:
ALPSALPINE CO LTD
NIPPON KAGAKU SANGYO KK
NIPPON KAGAKU SANGYO KK
International Classes:
C23C28/00; B32B3/30; B32B7/023; B32B15/01
Attorney, Agent or Firm:
Katsuyuki Ohkubo
Nozaki Teruo
Masahiro Matsushita
Nozaki Teruo
Masahiro Matsushita
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