Patent ID: 9709794
Date: 2017-07-18
CPC Classifications: A61B,G02B

Claim:
1. An endoscope with adjustable viewing angle, such that the viewing angle can pivot around a pivot axis, with: a fixed reflecting surface to reflect illuminating light being transmitted in a distal direction from a light source from a direction parallel to a longitudinal axis of the endoscope to a direction parallel to the pivot axis of the viewing angle; a pivotable reflecting surface to reflect the illuminating light from the direction parallel to the pivot axis of the viewing angle to the viewing angle, the pivotable reflecting surface providing a field of illumination out of the endoscope to illuminate an object to be observed by the endoscope, such that at least one of the fixed reflecting surface or the pivotable reflecting surface is curved; wherein the pivotable reflecting surface has a curvature which configures the field of illumination with a width-to-height ratio corresponding to a width-to-height ratio of a visual field of the viewing angle.