Lens supporting structure

摘要

A lens supporting structure for supporting a lens group in a lens barrel is disclosed. The lens supporting structure includes: a lens frame which supports the lens group therein; an outer flange formed on an outer periphery of the lens frame; an annular elastic member positioned on the lens frame immediately behind the outer flange; an inner flange formed extending inwardly on an inner periphery of the lens barrel, an inner circumferential edge of the inner flange defining an circular aperture having a center coincident with an optical axis of the lens group, the lens frame being inserted in the lens barrel through the circular aperture to be positioned in the lens barrel with the annular elastic member being compressed between the outer flange and the inner flange; a plurality of projections formed on one of the outer periphery of the lens frame and the inner edge of the inner flange; and a plurality of recesses formed on the other of the outer periphery of the lens frame and the inner edge of the inner flange, the plurality of recesses respectively engaging with the plurality of projections to secure the lens frame to the lens barrel.