Stereoscopic endoscope having image transmitting optical-system and pupil dividing unit that are axially movable with respect to each other

Claim 1

A pupil division type stereoscopic endoscope comprising: an image transmitting optical system having an image-forming lens for forming an image of an object and a relay lens for transmitting the image formed by said image-forming lens, said image transmitting optical system having an optical axis; a pupil dividing unit for dividing the image transmitted by said image transmitting optical system into a plurality of object images having a parallax therebetween; an observation unit for receiving the plurality of object images obtained through division by said pupil dividing unit, and for displaying the plurality of object images so as to enable stereoscopic observation; an optical lens system main body which integrally incorporates said image transmitting optical system and said pupil dividing unit so that said image transmitting optical system and said pupil dividing unit are coupled to and not detachable from each other; a connecting unit for detachably coupling said optical lens system main body and said observation unit to each other; and a position adjusting device for adjusting optical positions of said image transmitting optical system and said pupil dividing unit relative to each other in a direction of the optical axis of said image transmitting optical system.