Title:
REFLECTION PREVENTION MEMBER AND VIDEO DISPLAY SYSTEM
Document Type and Number:
Japanese Patent JP2019200278
Kind Code:
A
Abstract:
To provide a reflection prevention member capable of reducing visibility of an unwanted image more than a conventional one, without having restriction on colors.SOLUTION: A reflection prevention member T100 is arranged in a building including a light source and reduces reflection of light rays from the light source. The reflection prevention member T100 includes: a tabular substrate T110; and at least one protrusion T120 formed so as to extend in a first direction on one surface of the substrate T110. The projection T120 has a cross sectional shape in which, in a cross section of the reflection prevention member T100 crossing the first direction, the protrusion T120 is included inside a triangle formed by a point T121 at a tip part of the protrusion T120, a first intersection point T111 which corresponds to direct transmission light 31 of a transparent screen 20 and in which a first straight line passing the point T121 of the tip part crosses the surface of the substrate T110, and a second intersection point T112 which corresponds to a visual line 81 of an observer 80 and in which a second straight line passing the point T121 of the tip part crosses the surface of the substrate T110.SELECTED DRAWING: Figure 3
Inventors:
TANAKA YOSHITO
Application Number:
JP2018094022A
Publication Date:
November 21, 2019
Filing Date:
May 15, 2018
Export Citation:
Assignee:
PANASONIC IP MAN CORP
International Classes:
G03B21/62; G03B21/00; H04N5/74
Attorney, Agent or Firm:
Michiko Matsutani
Kawabata Junichi
Kawabata Junichi