Title:
VIRTUAL IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/138626
Kind Code:
A1
Abstract:
This virtual image display device 110 comprises a projection optical system 114 including a projection mirror 116 that projects image display light L toward a virtual image presentation board 22. The projection mirror 116 has a concave curved surface, the image display light L being obliquely incident on and reflected from the concave curved surface, and the projection mirror is configured such that the curvature at a second cross section intersecting with the concave curved surface is greater than the curvature at a first cross section intersecting with the concave curved surface. The first cross section is a plane including both the incident direction and the reflection direction of the image display light that is obliquely incident on the concave curved surface. The second cross section is a plane orthogonal to the first cross section, and is a plane along a direction orthogonal to both the incident direction and the reflection direction of the image display light that is obliquely incident on the concave curved surface. A display unit 12 is arranged at a focal point within the meridional plane of a compositing optical system 120 constituted by the virtual image presentation board 22 and the projection optical system 114.
Inventors:
KOJIMA DAISUKE (JP)
Application Number:
PCT/JP2018/038343
Publication Date:
July 18, 2019
Filing Date:
October 15, 2018
Export Citation:
Assignee:
JVC KENWOOD CORP (JP)
International Classes:
G02B27/01; B60K35/00; H04N5/64; H04N5/74
Domestic Patent References:
| WO2017187514A1 | 2017-11-02 |
Foreign References:
| JPS62225429A | 1987-10-03 | |||
| JPH03209210A | 1991-09-12 | |||
| JP2005156678A | 2005-06-16 | |||
| JP2012058688A | 2012-03-22 | |||
| JPS62225429A | 1987-10-03 |
Other References:
See also references of EP 3611554A4
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
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