IMAGE SENSOR AND CONTROL METHOD OF IMAGE SENSOR

An image sensor 5 includes a plurality of pixels 10. Each pixel 10 includes a photoelectric conversion portion 11, a reset gate 12 for controlling removal of a charge accumulated in the photoelectric conversion portion 11, a charge accumulation portion 13, an accumulation gate 14 for controlling a transfer of the charge from the photoelectric conversion portion 11 to the charge accumulation portion 13, and a readout gate 16 for controlling readout of the charge from the charge accumulation portion 13. The reset gate 12 removes the charge generated in the photoelectric conversion portion 11 by incidence of excitation light. The accumulation gate 14 transfers the charge generated in the photoelectric conversion portion 11 by incidence of fluorescence to the charge accumulation portion 13. The readout gate 16 performs control for reading out the charge after the charge transfer to the charge accumulation portion 13 is performed n times. The number n of the charge transfers is set for each pixel 10. Thus, an image sensor capable of selectively increasing signal amounts of pixels of a part of a plurality of pixels, and detecting only one of two light components being alternately incident is realized.