Title:
FLUORESCENCE AND PHOSPHORESCENCE DETECTING METHOD AND DEVICE, AND VALUABLE MEDIA AUTHENTICITY DETERMINING METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/132415
Kind Code:
A1
Abstract:
A fluorescence and phosphorescence detecting method for detecting fluorescent emission and phosphorescent emission which have different light emission intensity time characteristics when exposed to the same excitation light comprises: a first excitation light exposure step of emitting excitation light, at a first emission intensity, toward a valuable media during a first exposure time; a first emission light volume measurement step of measuring the amount of emission light from the valuable media that is excited by way of the excitation light emitted in the first excitation light exposure step; a second excitation light exposure step of emitting excitation light, at a second emission intensity that is set so that the light volume is the same as the excitation light emitted in the first excitation light exposure step, toward a valuable media during a second exposure time that is different than the duration of the first exposure time; a second emission light volume measurement step of measuring the amount of emission light from the valuable media that is excited by way of the excitation light emitted in the second excitation light exposure step; and a determination step of determining whether the light emission from the valuable media is fluorescent emission or phosphorescent emission by comparing the measurement result obtained with the first emission light volume measurement step to the measurement result obtained with the second emission light volume measurement step.
Inventors:
SATO TAKESHI (JP)
KONISHI HIROSHI (JP)
SHIMAOKA FUMIAKI (JP)
KONISHI HIROSHI (JP)
SHIMAOKA FUMIAKI (JP)
Application Number:
PCT/JP2013/055553
Publication Date:
September 04, 2014
Filing Date:
February 28, 2013
Export Citation:
Assignee:
GLORY KOGYO KK (JP)
International Classes:
G01N21/64; G07D7/12
Domestic Patent References:
| WO2010018353A1 | 2010-02-18 |
Foreign References:
| JP2013024570A | 2013-02-04 | |||
| JP2010191887A | 2010-09-02 | |||
| JPS58155478A | 1983-09-16 | |||
| JP2001516012A | 2001-09-25 | |||
| JP2001506001A | 2001-05-08 |
Attorney, Agent or Firm:
NAKATSUJI, Shiro (JP)
Shiro Nakatsuji (JP)
Shiro Nakatsuji (JP)
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