Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 4, 2011
Patent Application Number
12129326
Date Filed
May 29, 2008
Patent Citations Received
Patent Primary Examiner
Patent abstract
An endoscope includes: an insertion portion including a distal end portion, to be inserted into a subject; an observation optical system disposed in the insertion portion; an optical member configuring a part of an outer surface of the distal end portion, through which a photographing light to be incident into the observation optical system transmits; a first hydrophilic portion that is film-formed at least on a surface of the optical member; a second hydrophilic portion that is film-formed on a first surface of the distal end portion in which the optical member is disposed; and a third hydrophilic portion that is film-formed on a second surface separate from the first surface of the distal end portion.
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