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Title:
DISPLAY DEVICE, DISPLAY DEVICE CONTROL METHOD, AND CONTROL PROGRAM
Document Type and Number:
WIPO Patent Application WO/2020/217980
Kind Code:
A1
Abstract:
A display device comprising a laser irradiation device (100) for irradiating a display position (301) in a gas with a laser beam (203) of a prescribed wavelength region and forming a plasma at the display position (301), an object detection device (107) for detecting the presence of an object in a prescribed space (404), and a control device (1011) for determining the prescribed space (404) on the basis of the display position (301) and the intensity of the laser beam scattered at the display position or having passed through the display position.

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Inventors:
KUBO HIROYUKI (JP)
ASHIBE TSUNENORI (JP)
FUJIMURA HIDEHIKO (JP)
Application Number:
PCT/JP2020/015730
Publication Date:
October 29, 2020
Filing Date:
April 07, 2020
Export Citation:
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Assignee:
CANON KK (JP)
International Classes:
H04N5/74; G02B26/10; G02B26/12; G09F19/12; G09G3/02; H04N9/31; H04N13/324; H04N13/388
Foreign References:
JP2015156080A2015-08-27
JP2007133639A2007-05-31
JP2017007600A2017-01-12
JP2005309162A2005-11-04
Attorney, Agent or Firm:
CHIKASHIMA & ASSOCIATES (JP)
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