Endoscope system, processor device thereof, and exposure control method

[0109]In the first embodiment, semiconductor light sources are used as the laser sources LD1 to LD3. Instead of this, a second embodiment adopts a rotary filter method in which broadband light from a white light source such as a xenon lamp is wavelength split. As shown in FIG. 19, an endoscope system 100 has the same structure as the endoscope system 10 of the first embodiment, except for an electronic endoscope 101 and a light source device 102. Therefore, the structure of the electronic endoscope 101 and the light source device 102 and parts related thereto will be described below, and explanation of the other parts will be omitted. Note that, it is difficult for the system of the second embodiment to perform control of the light intensity in a short time owing to the use of the rotary filter method. For this reason, the brightness controller 72 of the processor device 13 is not provided with the light intensity determiner 76.

[0110]The electronic endoscope 101 differs from the electr