Title:
DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/004724
Kind Code:
A1
Abstract:
Provided is a display device whereby it is possible, when using as a screen a modulating element which changes alternately between a pass-through state and a scattering state, to prevent strong light from a light source passing through the screen and entering a viewer's eyes. A display device (1) comprises: a screen (3) which is capable of switching between a pass-through state and a scattering state with respect to light; a projected light detector (2o) which detects the intensity of projected light which is projected toward the screen (3); and a scattered light detector (6) which detects, among scattered light which is scattered by the screen (3), the intensity of light of a wavelength region which passes through an environmental light removal filter (7). A computer (5) interrupts the projection of the projected light by switching off a power source of a projector (2) on the basis of the intensity of the projected light which the projected light detector (2o) detects and the intensity of the light of the wavelength region which passes through the environmental light removal filter (7) which the scattered light detector (6) detects.
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Inventors:
HIGUCHI TAKANOBU (JP)
Application Number:
PCT/JP2013/068705
Publication Date:
January 15, 2015
Filing Date:
July 09, 2013
Export Citation:
Assignee:
PIONEER CORP (JP)
International Classes:
H04N5/74; G03B21/00
Foreign References:
| JP2011170096A | 2011-09-01 | |||
| JP2007082107A | 2007-03-29 | |||
| JP2005164692A | 2005-06-23 |
Attorney, Agent or Firm:
TAKINO, Hideo et al. (JP)
Hideo Takino (JP)
Hideo Takino (JP)
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