Title:
LIGHT GUIDE PLATE, LIGHT GUIDE PLATE MANUFACTURING METHOD, AND IMAGE DISPLAY DEVICE USING THE SAME
Document Type and Number:
Japanese Patent JP2020038316
Kind Code:
A
Abstract:
To provide: a light guide plate capable of being applied to incident beams with a wide beam angular range and a wide wavelength range and preventing deterioration in optical efficiency while maintaining a high see-through property; a light guide plate manufacturing method; and an image display device using it.SOLUTION: A light guide plate has a light diffraction part for diffracting incident light by using a hologram recorded in multiple way. The light diffraction part includes at least two or more areas, and diffracts a wavelength different in each of the areas when a certain parallel beam is incident.SELECTED DRAWING: Figure 10
Inventors:
UTSUKI TAKESHI
Application Number:
JP2018165878A
Publication Date:
March 12, 2020
Filing Date:
September 05, 2018
Export Citation:
Assignee:
HITACHI LG DATA STORAGE INC
International Classes:
G02B27/02; G02B5/32; G02B6/124; G03H1/28
Domestic Patent References:
| JP2015102613A | 2015-06-04 | |||
| JP2003504659A | 2003-02-04 | |||
| JP2018077330A | 2018-05-17 |
Foreign References:
| WO2017060665A1 | 2017-04-13 | |||
| WO2015151284A1 | 2015-10-08 |
Attorney, Agent or Firm:
Aoritsu patent business corporation