Patent ID: 6172804
Filing Date: 2001-01-09
Classification: G02B

Abstract:
An optical observation device comprising:a base section having a lens accommodated therein along a lens axis, a first axis of rotation extending through said base section and oriented orthogonally to said lens axis, a first mirror mounted for rotation about said first axis of rotation, and an outer surface cylindrically curved about said first axis of rotation;an eyepiece section having an eyepiece accommodated therein, a second axis of rotation extending through said eyepiece section and oriented parallel to said first axis, a second mirror mounted for rotation about said second axis of rotation, and an outer surface cylindrically curved about said second axis of rotation;said outer surface of said eyepiece section being arranged in rolling surface engagement with said outer surface of said base section to permit swiveling motion of said eyepiece section relative to said base section for varying an observation angle of said eyepiece through a swivel angle; anda gearing system for rotating said second mirror about said second axis of rotation by a fraction of said swivel angle to follow said swiveling of said eyepiece section about said second axis of rotation, and for rotating said first mirror about said first axis of rotation by said fraction of said swivel angle to follow said swiveling of said eyepiece section about said first axis of rotation.