Title:
IMAGE PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/140109
Kind Code:
A1
Abstract:
Provided is an image projection device capable of suppressing an increase in the temperature of an image emitting unit due to external light. This image projection device emits a projection image onto a display unit for displaying a virtual image. The image projection device comprises: an image emitting unit (20) that emits image light; a projection optical unit (40) that emits the image light as a projection image in a viewpoint direction via the display unit; and a shutter unit (30) that is disposed on the optical path of the image light between the image emitting unit (20) and the display unit, and switches between a transmission mode in which light is transmitted and a blocking mode in which light is blocked.
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Inventors:
ADACHI GENKI (JP)
YAMAMOTO HIDEAKI (JP)
YAMAMOTO HIDEAKI (JP)
Application Number:
PCT/JP2023/000042
Publication Date:
July 27, 2023
Filing Date:
January 05, 2023
Export Citation:
Assignee:
KOITO MFG CO LTD (JP)
International Classes:
G02B27/01
Foreign References:
| JPS63294589A | 1988-12-01 | |||
| JP2003029196A | 2003-01-29 | |||
| JPH075886U | 1995-01-27 | |||
| JP2005114869A | 2005-04-28 | |||
| US20140132852A1 | 2014-05-15 |
Attorney, Agent or Firm:
FUJIOKA, Takahiro (JP)
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