Patent ID: 8597179
Filing Date: 2013-12-03
Classification: A61B,G02B

Abstract:
1. An endoscope apparatus comprising: an insertion portion inserted into a body; an optical member as an observation window arranged exposed from an outside surface at a distal end of the insertion portion; an objective optical system that condenses light impinged from the optical member; an electronic image pickup circuit that photoelectrically converts photographing light condensed by the objective optical system; a flexible film member disposed in the insertion portion and formed by an insulating, flexible member; a heat absorbing section disposed at one end part of the flexible film and having a first metal pattern formed thereon, the first metal pattern being arranged opposed to the electronic image pickup circuit so as to encircle the electronic image pickup circuit and absorbing heat generated from the electronic image pickup circuit; a heat radiation section disposed at the other end part of the flexible film member and having a second metal pattern formed thereon, the second metal pattern being adhered to the optical member in surface contact therewith at a position where the second metal pattern does not interfere with the photographing light to be condensed by the objective optical system and impinged on the electronic image pickup circuit on a rear surface of the optical member which is opposite to an exposed surface of the optical member, and the second metal pattern radiating heat transferred from the heat absorbing section to the optical member and adapted to prevent fogging, condensation or the like from occurring on the exposed surface of the optical member; and a heat transfer section provided to connect the heat absorbing section and the heat radiation section between the one end part and the other end part of the flexible film member and having a third metal pattern formed thereon, the third metal pattern connecting the first metal pattern of the heat absorbing section and the second metal pattern of the heat radiation section to be capable of heat transfer.