Endoscope apparatus

An endoscope apparatus comprising:

• a first light source portion configured to generate light;
• a second light source portion configured to generate light;
• first cooling means configured to cool the first light source portion;
• second cooling means configured to cool the second light source portion;
• a light guiding portion configured to be inserted into a subject and configured to be capable of guiding the light from the first light source portion and the light from the second light source portion and capable of emitting the guided lights from a distal end;
• an image pickup portion configured to receive light from the subject to which the lights emitted from the distal end of the light guiding portion is radiated to generate a picked-up image;
• a generation portion configured to generate brightness control information for causing brightness of the picked-up image to be target brightness;
• and
• a cooling control portion configured so that information about an amount-of-light ratio, which is a ratio of an amount of the light emitted by the second light source portion to an amount of the light emitted by the first light source portion, and the brightness control information are inputted and configured to control amounts of light emission of the first light source portion and the second light source portion while maintaining an amount-of-light ratio corresponding to the information about the amount-of-light ratio so that the brightness of the picked-up image generated by the image pickup portion becomes the target brightness and control the first cooling means and the second cooling means based on the information about the amount-of-light ratio and the brightness control information, wherein
• the cooling control portion identifies information about a cooling ratio, which is a ratio for performing cooling by the first cooling means and cooling by the second cooling means, based on the information about the amount-of-light ratio;
• decides a cooling capacity of the first cooling means and a cooling capacity of the second cooling means for cooling the first light source portion and the second light source portion for which the amounts of light emission are controlled so that the brightness of the picked-up image becomes the target brightness, at the cooling ratio, so as to cause the first light source portion and the second light source portion to be included within a predetermined temperature range, based on the brightness control information;
• and controls the first cooling means and the second cooling means to be driven with the cooling capacities decided for the first cooling means and the second cooling means.