Patent ID: 9179830
Filing Date: 2015-11-10
Classification: A61B,G02B

Abstract:
1. A scanning endoscope apparatus comprising: an insertion portion to be inserted into a living body; an optical fiber that is inserted through the insertion portion and emits light from a light source; a fixing member that holds the optical fiber in the insertion portion in a state where the optical fiber is protruded in a distal end direction of the insertion portion; an actuator that is disposed in the insertion portion and causes a distal end of the optical fiber to swing; and an illumination optical system disposed in the insertion portion so as to face a distal end of the optical fiber along the distal end direction, wherein the illumination optical system has an optical characteristic in which a focal point position of the light changes from a position on a more distal side than a distal end of the illumination optical system to a position on a more proximal side than the distal end of the illumination optical system when the optical fiber protruded from the fixing member is shortened by a predetermined length.