Patent ID: 7236316
Filing Date: 2007-06-26
Classification: G02B

Abstract:
1. A lens barrel assembly comprising: a barrel for housing at least a movable lens; two guide shafts placed in the barrel so as to be parallel to an optical axis; and a lens holder which holds the movable lens and which is movable along the optical axis under guide by the guide shafts, wherein in the lens holder, two guide grooves to be respectively fitted to the two guide shafts are provided, and a direction toward which an opening portion of one guide groove out of the two guide grooves is directed is different from a direction toward which an opening portion of the other guide groove is directed, wherein the opening portion of the one guide groove is not directed toward a peripheral direction of the lens holder while the opening portion of the other guide groove is directed toward the peripheral direction of the lens holder such that the other guide groove is fitted to the other guide shaft when the lens holder is rotated or slid against the one guide shaft in such a state that the one guide groove is fitted to the one guide shaft.