PROBLEM TO BE SOLVED: To provide a scan type observation device capable of improving the S/N and the brightness of an image.SOLUTION: The scan type observation device includes electromagnetic wave sources 33R, 33G, 33B, an electromagnetic wave source drive part 32 for making the electromagnetic wave sources 33R, 33G, 33B emit a pulse-shaped electromagnetic wave, scanning parts 11, 21 for emitting a pulse-shaped electromagnetic wave to an object 100 to scan the object 100, an electromagnetic wave detection part 35 for detecting an electromagnetic wave obtained from the object 100 by emitting the pulse-shaped electromagnetic wave and converting the electromagnetic wave into an analog electric signal, an analog/digital conversion part 36 for sampling the electric signal from the electromagnetic wave detection part 35 to convert the sampled electric signal into a digital signal, an image processing part 37 for generating an image of the object 100 on the basis of an output of the analog/digital conversion part 36, and a control part 31 for relatively controlling the emission timing of the pulse-shaped electromagnetic wave from the electromagnetic sources 33R, 33G, 33B by the electromagnetic wave drive part 32 and sampling timing of the electric signal from the electromagnetic wave detection part 35 by the analog/digital conversion part 36.
