| abstract |
An excitation light irradiating device irradiatesnexcitation light to a measuring site, the excitation lightncausing the measuring site to produce fluorescence. Annimaging system detects an image of the fluorescence, whichnhas been produced from the measuring site when the excitationnlight is irradiated to the measuring site. An imagingncontroller controls operations of the imaging system. Thenimaging system is provided with an image sensor, whichncomprises a plurality of pixels arrayed in two-dimensionalndirections and which has a fluorescence imaging regionnutilized for the imaging of the fluorescence and a non-imagingnregion other than the fluorescence imaging region. Thenimaging controller controls such that, when signal chargesnare to be read from the image sensor, signal charges, whichnhave been accumulated in atleast certain pixels among pixelsnfalling within the non-imaging region, are read with a quicknreading operation, in which the signal charges are read atna reading speed higher than the reading speed for thenfluorescence imaging region. |