Title:
REFLECTION TYPE SCREEN AND VIDEO DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2023152546
Kind Code:
A
Abstract:
To provide a reflection type screen having a good viewing angle in right and left directions of the screen and a video display device.SOLUTION: A screen 10 is a reflection type screen, and includes: a light diffusion layer 11 for diffusing light; a reflection layer 13 positioned on a back surface side of the light diffusion layer 11 in a thickness direction of the screen 10; and a light control layer 12 located between the light diffusion layer 11 and the reflection layer 13. The light control layer 12 is formed by integrally laminating a first layer 121 positioned on an observer side and a second layer 122 positioned on the back surface side in a thickness direction of the screen 10. The first layer 121 and the second layer 122 have refractive index difference. In an interface of the first layer 121 and the second layer 122, a plurality of unit optical shapes 123 are formed and arranged whose arrangement direction is horizontal directions of the screen and a longitudinal direction is a vertical direction of the screen.SELECTED DRAWING: Figure 2
Inventors:
KASHIWAGI TAKESHI
Application Number:
JP2022062658A
Publication Date:
October 17, 2023
Filing Date:
April 04, 2022
Export Citation:
Assignee:
DAINIPPON PRINTING CO LTD
International Classes:
G03B21/60; G02B5/02; G03B21/00; H04N5/74
Attorney, Agent or Firm:
Masayuki Shobayashi
Tetsuo Shiba
Kazuyoshi Hayashi
Tetsuo Shiba
Kazuyoshi Hayashi
Previous Patent: housing
Next Patent: Remaining work time calculation device, remaining work time calculation method, remaining work time ...
Next Patent: Remaining work time calculation device, remaining work time calculation method, remaining work time ...