Title:
NIGHT-VISION DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/103223
Kind Code:
A1
Abstract:
A night-vision device (1) is provided with a projection unit (10), an image pickup unit (5), a luminance ratio determining unit (50), and a projection control unit (50). The luminance ratio determining unit determines whether a determination luminance ratio in a set region is within a predetermined luminance range as a luminance ratio at which a subject to be detected forms an emphasized image, said set region having been set at least in a part of an image acquired by means of the image pickup unit. In the cases where the determination luminance ratio is out of the predetermined luminance range, the projection control unit controls the intensity of near-infrared light emitted from the projection unit such that the determination luminance ratio is within the predetermined luminance range.
Inventors:
HATTORI KAZUSHIGE (JP)
SUZUKI HIROTAKA (JP)
INOUE NOBUHIKO (JP)
OHTA KAZUHIDE (JP)
SUZUKI HIROTAKA (JP)
INOUE NOBUHIKO (JP)
OHTA KAZUHIDE (JP)
Application Number:
PCT/JP2013/007317
Publication Date:
July 03, 2014
Filing Date:
December 12, 2013
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H04N5/225; G02B5/20; G02B5/22; G08G1/16
Foreign References:
| JP2007282022A | 2007-10-25 | |||
| JP2012027773A | 2012-02-09 | |||
| JP2008135856A | 2008-06-12 | |||
| JP2010161459A | 2010-07-22 |
Attorney, Agent or Firm:
KIN, Junhi (JP)
Gold Junki (JP)
Gold Junki (JP)
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