Patent ID: 6816305
Filing Date: 2004-11-09
Classification: F41G,G02B

Abstract:
A pre-assembled pivoting lens unit for installation into a tubular housing of an optical sighting device, the housing having a longitudinal axis, the lens unit comprising:a pivot cartridge sized to be at least partially received within the housing; a pivot tube having a longitudinal axis, the pivot tube comprising: a first end pivotably coupled to the pivot cartridge, a second end extending from the pivot cartridge and movable transversely to the longitudinal axis of the housing, and a lens assembly disposed within the pivot tube between the first and second ends; and a fastener pivotally securing the pivot tube to the pivot cartridge, the first end of the pivot tube being keyed to the pivot cartridge independent of the housing to thereby limit rotation of the pivot tube about its longitudinal axis relative to the pivot cartridge after pre-assembly of the pivoting lens unit and before installation of the pre-assembled pivoting lens unit in the housing.