OPTICAL SENSOR, LIGHT DETECTING DEVICE, PAPER SHEET PROCESSING DEVICE, LIGHT DETECTING METHOD, AND PHOSPHORESCENCE DETECTING DEVICE
FIG10 is a flow chart showing the operation flow of a light detection apparatus according to the present invention
An example of the operation flow of the light detection apparatus 100 with the structure described above will be described with reference to FIG10. The operation of the phosphorescence detection apparatus 100 is as described above as the operation of the light detection apparatus 100 with reference to FIG10. In Step S6 (FIG10), the phosphorescence detection apparatus 100 determines whether or not the phosphorescent material among the materials contained in the detection target T is a phosphorescent material that emits light within the same wavelength range and is composed of a plurality of types of dye having different decay time constants. The operation of the phosphorescence detection apparatus 100 is as described above as the operation of the light detection apparatus 100 with reference to FIG10. The phosphorescence detection apparatus 100 calculates the decay time constant of phosphorescence for each photodetector 40 (for each color of radiation light) in Step S6 (FIG10), and determines phosphorescence emitted from the phosphorescent material contained in the detection target T.
flowchart
30
light source
10
optical sensor optical sensors
40
photodetector photodetectors
['1. An optical sensor, comprising: a light source that irradiates excitation light; a photodetector that detects radiation light emitted from a detection target excited by the excitation light; and a single light guide unit that guides the excitation light to the detection target and guides the radiation light to the photodetector.']