Title:
OPTICAL MEMBER, DISPLAY DEVICE, HEAD-MOUNTED TYPE DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2021131522
Kind Code:
A
Abstract:
To prevent an optical member from observing the image with a part of the image missing.SOLUTION: An optical member 10 includes a base material 11, a first part 30, and a second part 40. The first part 30 is arranged next to the base material 11 and includes a first optical element 31. The second part 40 is arranged next to the base material 11 in a position displaced from the first part 30 and includes a second optical element 41. The first optical element 31 guides at least a part of light which has entered the optical member 10, into the base material 11. The second optical element 41 causes at least a part of the light which has been guided in the base material 11 to be emitted from the optical member 10. The average of the change of the index of refraction to change of the wavelength in a visible light region of the base material 11 is at least 5.1×10-5[/nm].SELECTED DRAWING: Figure 2
Inventors:
HAYASHIDA EHAN
TAZAKI KEIKO
YADA YUKARI
TAZAKI KEIKO
YADA YUKARI
Application Number:
JP2020028278A
Publication Date:
September 09, 2021
Filing Date:
February 21, 2020
Export Citation:
Assignee:
DAINIPPON PRINTING CO LTD
International Classes:
G02B27/02; G02B5/18; G02B5/32; H04N5/64
Domestic Patent References:
| JP2019012259A | 2019-01-24 | |||
| JP2011524997A | 2011-09-08 | |||
| JP2009300480A | 2009-12-24 |
Foreign References:
| US20170248747A1 | 2017-08-31 | |||
| WO2015125794A1 | 2015-08-27 |
Attorney, Agent or Firm:
Yukitaka Nakamura
Satoru Asakura
Yukihiro Hotta
Goda Kohei
Satoru Asakura
Yukihiro Hotta
Goda Kohei