Title:
HEAD-UP DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/184506
Kind Code:
A1
Abstract:
Provided is a head-up display device making it possible to curb the occurrence of a lens flare caused by the Sun. This head-up display device 200 is provided with: a display element 11 for displaying an image; an intermediate screen 19; a first optical system 15 for projecting, as an intermediate image TI on the intermediate screen 19, an image formed on the display element 11; a second optical system 17 for magnifying and projecting, as a virtual image, the intermediate image TI that is on the intermediate screen 19; and a rotational drive unit 64, which is a projection distance modification device for causing the intermediate image TI on the intermediate screen 19 to move in an optical axis AX direction. The intermediate screen 19 is accommodated within a hollow frame 16b to which is provided a light emission member 16h that is light-transmissive, and rotates along with the frame 16b. An outer surface 64a, which is a light emission surface of the frame 16b, is inclined with respect to the optical axis AX.
Inventors:
KOJIMA TOSHIYUKI (JP)
Application Number:
PCT/JP2020/009968
Publication Date:
September 17, 2020
Filing Date:
March 09, 2020
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
B60K35/00; G02B27/01
Domestic Patent References:
| WO2018079794A1 | 2018-05-03 |
Foreign References:
| JPH01195406A | 1989-08-07 | |||
| JP2015158631A | 2015-09-03 | |||
| JPH0781136A | 1995-03-28 | |||
| JP2013073229A | 2013-04-22 | |||
| US20140036374A1 | 2014-02-06 |
Attorney, Agent or Firm:
FUKUDA, Mitsuhiro (JP)
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