Title:
DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/183446
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a display device that makes it possible for a user to obtain information from projected video images without missing information that could be obtained from the surrounding environment. This display device is mounted to the head of a user and shows the user prescribed video images. The display device comprises: a light amount detection means (17) that detects the amount of external light; lasers (211R, 211G, 211B) that emit laser light in an amount that corresponds to an electric current value; a light reduction means (22) that reduces the laser light, and has a filter that can have the light reduction ratio thereof switched; an optical scanning unit (15) that scans the laser light after the laser light has passed through the filter; a projection optical system (16) that projects the scanned laser light so as to form video images; and a control means (27) that, on the basis of the amount of external light detected by the light amount detection means, increases/decreases the electric current value and switches the light reduction ratio of the filter so as to control the luminance of the video images.
Inventors:
KIMURA YUJI (JP)
Application Number:
PCT/JP2017/014137
Publication Date:
October 26, 2017
Filing Date:
April 04, 2017
Export Citation:
Assignee:
MITSUMI ELECTRIC CO LTD (JP)
KIMURA YUJI (JP)
KIMURA YUJI (JP)
International Classes:
G02B27/02; G02B26/10; G09G3/02; G09G3/20; G09G5/00; H04N5/64
Foreign References:
JP2005107125A | 2005-04-21 | |||
JP2014195184A | 2014-10-09 | |||
JP2009086365A | 2009-04-23 | |||
JPH11109882A | 1999-04-23 | |||
JP2015049266A | 2015-03-16 | |||
JP2012212023A | 2012-11-01 | |||
US20120105310A1 | 2012-05-03 | |||
JP2007101618A | 2007-04-19 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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