Patent ID: 7460318

Claim:
A lens barrel assembly, comprising: a lens barrel having an inner periphery defining a mounting slot along a circumferential direction thereof, the lens barrel comprising: a cylinder body, the mounting slot further defined along the direction perpendicular to an axis of the cylinder body; a semi-enclosed end plate; and an open end, the end plate having a through hole defined therethrough; and the mounting slot comprising: an arcuate slit defined through a portion of the circumferential wall of the cylinder body along the circumferential direction; and a positioning slot defined in an inner circumferential surface of the cylinder body along the circumferential direction and opposite to the arcuate slit; at least one lens being received in the lens barrel; and a filter being securely mounted in the lens barrel merely by means of the filter engaging into the mounting slot so as to prevent the filter from being disengaged from the mounting slot along a direction of incident light filtering through the filter.