Patent ID: 7466503

Claim:
A zoom lens lens-barrel which holds at least one of a plurality of lenses in a movable manner along an optical axis direction, the lens-barrel comprising: a pair of first guide shafts provided parallel to the optical axis direction and which supports an outer periphery of one or a plurality of lens frames of a plurality of lens frames each having each of the plurality of lenses; a pair of second guide shafts provided parallel to the optical axis direction and at a phase position in the lens-barrel plane different from the position of the pair of first guide shafts, the second guide shafts supporting an outer periphery of at least the remaining lens frames of the plurality of the lens frames; and wherein the plurality of lenses include first lenses, second lenses, third lenses, fourth lenses, and fifth lenses in order from the side closest to the subject, the pair of first guide shafts support an outer periphery of a second lens frame having the second lenses, and the pair of second guide shafts support outer peripheries of a third lens frame having the third lenses, a fourth lens frame having the fourth lenses, and a fifth lens frame having the fifth lenses.