The disclosure aims to reduce current consumption while suppressing degradation in image resolution. An optical scanning observation apparatus 10, comprising: a light source selectively emitting a plurality of lights of different colors; a light emission timing controller 32 controlling light emission timing, based on a predetermined ratio of number of light emissions of each color of light emitted from the light source; a fiber 11 guiding light from the light source; an actuator 21 vibratory driving the tip part of the fiber; an optical system 25a, 25b for irradiating light emitted from the fiber; an optical detector 35; and a signal processor 37.
OPTICAL-SCANNING-TYPE OBSERVATION DEVICE