Title:
OPTICAL DEVICE AND HEAD-MOUNTED DISPLAY
Document Type and Number:
WIPO Patent Application WO/2023/112835
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing an optical device that, when used in a head-mounted display, excels in background visibility and can suppress iridescent unevenness caused by external light incident from above the forehead of the user, and a head-mounted display. The object is achieved with an optical device having a light guide plate with a diffraction element arranged on the surface thereof and an optical filter including an anisotropic light-absorbing layer, wherein the angle between the absorption axis of the anisotropic light-absorbing layer and the normal direction of the main surface of the anisotropic light-absorbing layer is 0-45°.
Inventors:
AMINAKA EIICHIRO (JP)
Application Number:
PCT/JP2022/045351
Publication Date:
June 22, 2023
Filing Date:
December 08, 2022
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B5/30; G02B5/18; G02B27/02
Domestic Patent References:
| WO2021230019A1 | 2021-11-18 | |||
| WO2021210359A1 | 2021-10-21 |
Foreign References:
| US20190227321A1 | 2019-07-25 | |||
| US20210199873A1 | 2021-07-01 | |||
| CN112180606A | 2021-01-05 | |||
| US20210278672A1 | 2021-09-09 | |||
| JPH08166556A | 1996-06-25 | |||
| JP2009145776A | 2009-07-02 | |||
| JP2021508093A | 2021-02-25 | |||
| US11435585B1 | 2022-09-06 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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