Title:
BLACK SPOT PLATE FOR OPHTHALMOLOGIC APPARATUS AND MANUFACTURING METHOD THEREOF, AND OPHTHALMOLOGIC APPARATUS
Document Type and Number:
Japanese Patent JP2023150384
Kind Code:
A
Abstract:
To provide a black spot plate for ophthalmologic apparatus manufactured by a further simple method and capable of suppressing reflection at an interface between a substrate or another coating layer and the black point plate, and ophthalmologic apparatus using the black spot plate for preventing occurrence of ghost.SOLUTION: A black spot plate for ophthalmologic apparatus comprising a substrate layer, an antireflection layer composed of at least one layer provided on the substrate layer, and a light shielding layer provided as a small black spot on the antireflection layer, includes a first refractive index matching layer formed of a dielectric layer for preventing reflection of incident light from the antireflection layer, provided between the antireflection layer and the light shielding layer, and a second refractive index matching layer formed of a dielectric layer for preventing reflection of incident light from air, provided on the light shielding layer.SELECTED DRAWING: Figure 6
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| WO/2020/010138 | COMPUTATIONAL LIGHTFIELD OPHTHALMOSCOPE |
Inventors:
AKIBA MASAHIRO
Application Number:
JP2022059478A
Publication Date:
October 16, 2023
Filing Date:
March 31, 2022
Export Citation:
Assignee:
TOPCON CORP
International Classes:
A61B3/14
Attorney, Agent or Firm:
Mikio Suenari