Patent ID: 7852578
Filing Date: 2010-12-14
Classification: G02B

Abstract:
1. A lens barrel, comprising: a plurality of lens groups, a plurality of lens frames each of which holds each of the plurality of lens groups, a lens driving apparatus configured to move the lens frames in an optical axial direction, and a fixed member to hold the lens driving apparatus, the lens driving apparatus being capable of moving the lens frames from a collapsed position to a photographic position, the lens driving apparatus including a rotational member supported rotatably on the fixed member and capable of moving in the optical axial direction while rotating relative to the fixed member, the rotational member being configured to support a plurality of frames of the plurality of lens frames and move the supported frames in the optical axial direction when the rotational member is rotated relative to the fixed member, a linearly moving guide member configured to be supported on the rotational member to be rotated relative to the rotational member, while being moved with the rotational member in the optical axial direction while limiting rotation of the lens frames at least one linearly moving-guide biasing member which is supported on the fixed member to be capable of moving in the optical axial direction relative to the linearly moving guide member and is configured to limit rotation, and a resilient structure provided to connect the linearly moving guide member and the linearly moving-guide biasing member, when the plurality of lens groups are moved in the optical axial direction from the collapsed position to the photographic position, the linearly moving-guide biasing member being configured to be moved with the linearly moving guide member, but stopped at a position before the photographic position, and the linearly moving guide member being configured to be biased by the resilient structure toward the collapsed position in the optical axial direction while the linearly moving guide member is further moved to the photographic position.