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Patent Searching and Data


Title:
ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/099109
Kind Code:
A1
Abstract:
To achieve an illumination device that can improve the S/N ratio between noise and an output signal generated from controlled light, and also prevent an erroneous operation caused by light other than the controlled light, the present invention includes: a light emitting unit (2); a light receiving unit (3) that receives the controlled light, which is on the visible spectrum, and outputs an output signal that corresponds to the amount of light; and a switching unit (7) that switches the light emitting state of the light emitting unit (2) on the basis of the value of the output signal that is output by the light receiving unit (3). The light receiving unit (3) includes: one or a plurality of first photoelectric conversion elements (31); and an equivalent number of second photoelectric conversion elements (32) corresponding to the number of first photoelectric conversion elements. The light receiving unit is provided at a position at which illumination light from the light emitting unit (2) enters each of the first photoelectric conversion elements (31) and second photoelectric conversion elements (32). The first photoelectric conversion elements (31) and the second photoelectric conversion elements (32) are connected so as to form a parallel circuit, and also connected such that the polarity of the first photoelectric conversion elements (31) is opposite the polarity of the second photoelectric conversion elements (32).

Inventors:
TANAKA YUICHIRO (JP)
IMAI KANJI (JP)
Application Number:
PCT/JP2012/050824
Publication Date:
July 26, 2012
Filing Date:
January 17, 2012
Export Citation:
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Assignee:
CCS INC (JP)
TANAKA YUICHIRO (JP)
IMAI KANJI (JP)
International Classes:
H05B37/02; F21V23/04; F21Y103/00
Foreign References:
JP2009266461A2009-11-12
JPH0613095U1994-02-18
JPH04235424A1992-08-24
Attorney, Agent or Firm:
NISHIMURA, RYUHEI (JP)
Ryuhei Nishimura (JP)
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Claims: