Lens barrel and imaging device
AssigneePanasonic Corporation
InventorsTakeo Santo, Naoto Yumiki
Life of this patent
Estimating the term…
Abstract
An interchangeable lens unit comprises a second lens group support unit, a focus lens, a focus lens support frame, and a focus drive unit. The second lens group support unit supports the focus lens support frame movably in the Z-axis direction and has second cam pins disposed spaced apart around an optical axis. The focus drive unit is a unit for driving the focus lens support frame in the Z-axis direction with respect to the second lens group support unit and is disposed at a different position from those of the second cam followers when viewed in the Z-axis direction.
Claims17
A lens barrel, comprising:
- a first lens element having an optical axis;
- a first support frame configured to support the first lens element;
- a second support frame including a plurality of circumferentially spaced fixing portions disposed around the optical axis of the first lens element and a plurality of cam followers coupled to the fixing portions, the first support frame being movably supported by the second support frame in a first direction parallel to the optical axis;
- and
- a drive unit configured to move the first support frame in the first direction, the cam followers being arranged substantially perpendicular to the optical axis of the first lens element and substantially perpendicular to the outer peripheral side of the drive unit when viewed in the first direction, portions of the drive unit being circumferentially disposed between the fixing portions when viewed in the first direction.
A lens barrel, comprising:
- a first lens element having an optical axis;
- a first support frame configured to support the first lens element;
- a second support frame including a plurality of cam followers, the first support frame being movably supported by the second support frame in a first direction parallel to the optical axis;
- a coil fixed to one of the first and second support frames;
- a first magnet fixed to one of the first and second support frames different from which the coil is fixed, the first magnet including a first face arranged opposite to and facing the coil;
- and
- a second magnet fixed to one of the first and the second support frames different from which the coil is fixed, the second magnet including a second face arranged opposite to and facing the coil,
- the first and the second magnets being arranged relative to the optical axis such that either an acute angle or an obtuse angle is formed between a first center line perpendicular to the first face and a second center line perpendicular to the second face.
An imaging device, comprising:
- a lens barrel including
- a first lens element having an optical axis,
- a first support frame configured to support the first lens element,
- a second support frame having a plurality of circumferentially spaced fixing portions disposed around the optical axis of the first lens element and a plurality of cam followers coupled to the fixing portions, the first support frame being movably supported by the second support frame in a first direction parallel to the optical axis, and
- a drive unit configured to move the first support frame in the first direction, the cam followers being arranged substantially perpendicular to the optical axis of the first lens element and substantially perpendicular to the outer peripheral side of the drive unit when viewed in the first direction, portions of the drive unit being circumferentially disposed between the fixing portions when viewed in the first direction;
- and
- an imaging element configured to convert light passing through the lens barrel into an electrical signal.
Dependencies are inferred from the claim text.