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Title:
INFORMATION DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/130948
Kind Code:
A1
Abstract:
The present invention provides an information display device capable of obtaining a larger virtual image having high visibility while reducing the size of the device. An information display device 100 for projecting a video onto a screen member 6 comprises: a video display unit 4 for generating video light with a light source 5 arranged therebehind; and an optical system that reflects the video light generated by the video display unit 4 with a concave mirror 1 to project the video light onto the screen member 6, thereby displaying a virtual image VI in front of the screen member. The display surface of the video display unit 4 is configured to have a curved surface facing the concave mirror 1. Here, the curved shape of the display surface of the video display unit 4 is defined to reduce image surface distortion generated in the virtual image VI caused by the shape of the concave mirror 1.

Inventors:
HIRATA Koji (1, Koizumi, Oyamazaki, Oyamazaki-cho Otokuni-gu, Kyoto 25, 〒6188525, JP)
WATANABE Toshimitsu (1, Koizumi, Oyamazaki, Oyamazaki-cho Otokuni-gu, Kyoto 25, 〒6188525, JP)
MISAWA Akio (1, Koizumi, Oyamazaki, Oyamazaki-cho Otokuni-gu, Kyoto 25, 〒6188525, JP)
YOSHIDA Koji (7-1 Nishi-shinbashi 3-chome, Minato-k, Tokyo 03, 〒1050003, JP)
TAKEDA Kaoru (7-1 Nishi-shinbashi 3-chome, Minato-k, Tokyo 03, 〒1050003, JP)
Application Number:
JP2018/043544
Publication Date:
July 04, 2019
Filing Date:
November 27, 2018
Export Citation:
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Assignee:
MAXELL, LTD. (1 Koizumi, Oyamazaki Oyamazaki-cho Otokuni-gu, Kyoto 25, 〒6188525, JP)
JAPAN DISPLAY INC. (7-1 Nishi-shinbashi 3-chome, Minato-ku Tokyo, 03, 〒1050003, JP)
International Classes:
G02B27/01; B60K35/00; G02B13/16; G02B17/08
Domestic Patent References:
WO2015186488A12015-12-10
WO2017072841A12017-05-04
Foreign References:
JP2017072668A2017-04-13
JP2018112628A2018-07-19
JP2016136222A2016-07-28
JP2017187685A2017-10-12
US6402321B12002-06-11
Attorney, Agent or Firm:
SEIRYO I.P.C. (24-2, Hatchobori 2-chome Chuo-k, Tokyo 32, 〒1040032, JP)
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