Patent ID: 7142373
Filing Date: 2006-11-28
Classification: G02B

Abstract:
1. A lens barrel assembly comprising: an outer barrel having a front end and a rear end; an inner barrel, having a front portion and a rear portion, inserted in said outer barrel in an optical axis direction; wherein said outer barrel moves forwards or backwards relative to said inner barrel in said optical axis direction, to shift between a short size position and a long size position, and when in said short size position, shifts from said inner barrel at a smallest shifting amount, and when in said long size position, shifts from said inner barrel at a largest shifting amount; a first vent, formed in a selected one of said outer and inner barrels to be positioned in front of a remaining one thereof, and disposed close to said front end or said front portion thereof; and a first filter, being water-impermeable and air-permeable, and secured to said first vent in a closed manner.