Patent ID: 8817244
Filing Date: 2014-08-26
Classification: G01J,G01N

Abstract:
1. An apparatus for measuring fluorescence emitted when an object to be measured is irradiated with laser light, the apparatus comprising: a laser light source that irradiates the object to be measured with laser light whose intensity is modulated at a frequency by a modulation signal; a first light-receiving unit that receives scattered light emitted when the object to be measured is irradiated with the laser light; a second light-receiving unit that receives fluorescence emitted when the object to be measured is irradiated with the laser light; and a signal processing unit that assigns a greater weight to a first signal component of the fluorescence in phase with the modulation signal and a second signal component of the fluorescence whose phase is shifted from the modulation signal by 90 degrees, as an intensity of the scattered light gets higher, the first signal component and the second signal component being obtained from a signal of the fluorescence received by the second light-receiving unit.