Title:
LIGHT GUIDE PLATE, METHOD FOR MANUFACTURING LIGHT GUIDE PLATE, AND IMAGE DISPLAY DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2020/049849
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a light guide plate, a method for manufacturing the light guide plate, 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 light guide plate has a light diffraction unit that diffracts the incident light by a multiplexed hologram, wherein the light diffraction unit has at least two regions, and the respective regions diffract light having different wavelengths when certain parallel light is incident.
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Inventors:
UTSUGI TAKERU (JP)
Application Number:
PCT/JP2019/026349
Publication Date:
March 12, 2020
Filing Date:
July 02, 2019
Export Citation:
Assignee:
HITACHI LG DATA STORAGE INC (JP)
International Classes:
G02B27/02; G02B5/32; G02B6/124; G03H1/28
Domestic Patent References:
| WO2017060665A1 | 2017-04-13 |
Foreign References:
| JP2015102613A | 2015-06-04 |
Attorney, Agent or Firm:
SEIRYO I.P.C. (JP)
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