Title:
導光板、導光板製造方法及びそれを用いた映像表示装置
Document Type and Number:
Japanese Patent JP7157600
Kind Code:
B2
Abstract:
The purpose of the present invention is to provide a waveguide, a method for manufacturing the waveguide, and an image display device using the same, which can be applied to incident light with a wide light angle range and a wide wavelength range, and can suppress a decrease in optical efficiency while maintaining high see-through performance. In order to achieve the above purpose, the waveguide has a light diffraction unit that diffracts the incident light by a multiplex-recorded hologram, wherein the light diffraction unit has at least two regions, and the light diffraction unit diffracts light of different wavelengths by the respective regions when certain parallel light ray is incident.
More Like This:
Inventors:
Ken Utsuki
Application Number:
JP2018165878A
Publication Date:
October 20, 2022
Filing Date:
September 05, 2018
Export Citation:
Assignee:
Hitachi LG Data Storage Co., Ltd.
International Classes:
G02B27/02; G02B5/18; G02B5/32
Domestic Patent References:
| JP2003504659A | ||||
| JP2015102613A | ||||
| JP2018077330A |
Foreign References:
| WO2017060665A1 | ||||
| WO2015151284A1 |
Attorney, Agent or Firm:
Seiryo Patent Attorneys Corporation
Previous Patent: FOOD COATING AND METHOD FOR PRESERVING FOOD APPEARANCE
Next Patent: CONDUCTIVE NONCRYSTALLINE POLYOLEFIN RESIN COMPOSITION
Next Patent: CONDUCTIVE NONCRYSTALLINE POLYOLEFIN RESIN COMPOSITION