Title:
AERIAL IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/112197
Kind Code:
A1
Abstract:
An aerial image display device (100) comprises an image display unit (10) that displays an image (11), a retroreflection member (20), and an optical member (30). The retroreflection member (20) includes a plurality of openings (51, 52, 53, 54) through which image light emitted from the image display unit (10) passes, and a plurality of retroreflection surfaces (61a, 62a, 63a, 64a, 65a). The optical member (30) includes an optical separation surface (30b) that reflects and transmits incident light, and reflects the image light having passed through the plurality of openings (51, 52, 53, 54) and directs the image light toward the plurality of retroreflection surfaces (61a, 62a, 63a, 64a, 65a). The image light retroreflected by the plurality of retroreflection surfaces (61a, 62a, 63a, 64a, 65a) is transmitted through the optical member (30), and the orientations of the plurality of retroreflection surfaces (61a, 62a, 63a, 64a, 65a) are different from each other.
Inventors:
KIKUTA HAYATO (JP)
Application Number:
PCT/JP2021/046247
Publication Date:
June 22, 2023
Filing Date:
December 15, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G02B30/56
Domestic Patent References:
| WO2018043673A1 | 2018-03-08 |
Foreign References:
| JPS59500189A | 1984-02-02 | |||
| JP2018136453A | 2018-08-30 | |||
| JP2018081138A | 2018-05-24 | |||
| JP2017107165A | 2017-06-15 | |||
| US5583695A | 1996-12-10 |
Attorney, Agent or Firm:
YAMAGATA Yoichi et al. (JP)
Download PDF:
Previous Patent: PHOTOCATALYTIC DEVICE
Next Patent: INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND RECORDING MEDIUM
Next Patent: INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND RECORDING MEDIUM