Title:
IMAGE PROJECTION DEVICE AND MOBILE BODY
Document Type and Number:
WIPO Patent Application WO/2019/181749
Kind Code:
A1
Abstract:
An image projection device that projects an image formed on an image forming member 15 by a projection optical system 511, in which an image light emitting surface of the image forming member is disposed to be inclined with respect to an optical axis L0 of image light so that when external light L' incident on the projection optical system is incident on the image light emitting surface of the image forming member, a flux of light traveling along an optical axis of the external light reflected on the image light emitting surface is turned aside from a viewpoint area 402a of a user.
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Inventors:
OGINO SHIMPEI (JP)
NAKAMURA KENTO (JP)
NAKAMURA KENTO (JP)
Application Number:
PCT/JP2019/010660
Publication Date:
September 26, 2019
Filing Date:
March 14, 2019
Export Citation:
Assignee:
RICOH CO LTD (JP)
OGINO SHIMPEI (JP)
NAKAMURA KENTO (JP)
OGINO SHIMPEI (JP)
NAKAMURA KENTO (JP)
International Classes:
G02B27/01
Domestic Patent References:
| WO2016185992A1 | 2016-11-24 |
Foreign References:
| EP3290990A1 | 2018-03-07 | |||
| EP3012681A1 | 2016-04-27 | |||
| JP4325724B2 | 2009-09-02 | |||
| JP2018051221A | 2018-04-05 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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