Patent ID: 7643231
Filing Date: 2010-01-05
Classification: G02B

Abstract:
1. A mechanism for permitting selective adjustment of the angular position of a head-mounted optical device, said mechanism comprising: a housing positioned adjacent the optical device; a shaft being at least partially positioned within or adjacent the housing, said shaft being rotatively coupled to the optical device, wherein rotation of said shaft induces rotation of the optical device with respect to said housing; a moveable lever coupled to said shaft for rotating said shaft, said lever including a set of gear teeth; and a stop, separate from the moveable lever, positioned on said housing for selective engagement with said set of gear teeth of said moveable lever, said moveable lever or said stop being positionable between a deployed position and a retracted position, wherein in said deployed position said set of gear teeth are separated from said stop to permit movement of said moveable lever, rotation of said shaft and rotation of the optical device, and in said retracted position said set of gear teeth are engaged with said stop to limit movement of said moveable lever, rotation of said shaft and rotation of the optical device.