| 主权项 |
1. An endoscope system comprising:
a light transmitting section configured to transmit illuminating light generated by a light source and emit the light from a light exit surface; a light receiving section configured to receive return light of the light emitted from the light exit surface; a light guiding section configured to allow the light emitted from the light exit surface to be incident on the light receiving section by totally reflecting return light from a subject or the emitted light at least one or more times; a driving section configured to allow an end portion having the light exit surface of the light transmitting section to be swung to the subject during a first time period and to the light guiding section during a second time period so as to draw trajectories corresponding to predetermined scanning patterns; a light detecting section configured to detect, of the light emitted from the light exit surface of the light transmitting section, the return light from the subject during the first time period, as a signal for image generation, and the light received through the light guiding section during the second time period, as a signal for emission quality determination; a determination section configured to determine whether or not the pattern of fluctuations in a signal level detected by the light detecting section corresponds to a predetermined pattern of fluctuations; and a control section configured to, if a determination result is that the pattern of fluctuations in the signal level within the second time period does not correspond to the predetermined pattern of fluctuations, perform control for lowering a quantity of the illuminating light supplied by the light source to the light transmitting section, to zero or a predetermined value. |
