Patent ID: 7787194
Filing Date: 2010-08-31
Classification: G02B

Abstract:
1. Apparatus including a mounting assembly, comprising: a lens barrel adapted to hold a lens or a lens assembly; a carriage assembly receiving the lens barrel; a set of cooperating screw threads provided with the lens barrel and a portion of the carriage assembly to allow rotation of the lens barrel with respect to the carriage assembly to enable the lens or lens assembly to be moved along an optical axis and adjust focus; one of said carriage and said lens barrel having a detented surface comprising a plurality of discrete recesses, the other of said carriage and said lens barrel having at least one first projection biased against said detented surface, with said at least one first projection engaging with said plurality of discrete recesses of the detented surface to define a plurality of first stable rotational positions of said lens barrel with respect to said carriage assembly; wherein the or each projection extends substantially perpendicularly and outwardly from a distal end of a resilient finger extending from a region of said lens barrel.