| 摘要 |
A stereoscopic endoscope includes an insertion portion 2, an objective optical system 11 provided at a distal end portion of the insertion portion 2, an objective optical system 12 provided at the distal end portion, a first opening portion 18k provided a predetermined distance "a" apart from an optical axis center 11c of the objective optical system 11 and configured to deliver fluid to the objective optical system 11, and a second opening portion 19k provided a distance "b" equivalent to the predetermined distance "a" apart from an optical axis center 12c of the objective optical system 12 and configured to deliver the fluid in a supply direction same as a supply direction of the first opening portion 18k to the objective optical system 12. |
