Lens barrel and imaging device
AssigneePanasonic Corporation
InventorsNAOTO YUMIKI, HIDEO ONISHI, YOSHIHARU ARAKI, FUMIO MURAMATSU, MASATO MURAYAMA
Life of this patent
Estimating the term…
Abstract
An interchangeable lens unit comprises a second lens group unit, a focus lens unit, a fourth lens group unit, a zoom ring unit, and a focus motor. The zoom ring unit mechanically transmits operational force inputted to a zoom ring to the second lens group unit and the fourth lens group unit. The focus motor electrically drives the focus lens unit in the Z axis direction with respect to the second lens group unit. When the zoom ring is operated in a state in which no power is being supplied to the focus motor, a gap is always ensured in the Z axis direction between the focus lens unit and the second lens group unit.
Claims8
A lens barrel for forming an optical image of a subject on an imaging element, comprising:
- a first lens unit having a first lens element and a first lens support frame supporting the first lens element;
- a second lens unit having a second lens element arranged to vary the focal length by moving relative to the first lens element in the optical axis direction, and a second lens support frame supporting the second lens element;
- a focus lens unit having a focus lens arranged to vary the focal state of the optical image by moving relative to the first lens element or the second lens element in the optical axis direction, and a focus lens support frame supporting the focus lens;
- a zoom mechanism arranged to relatively move the first lens unit and the second lens unit in the optical axis direction, having a zoom operating unit configured to be operated by the user, with which the operating force inputted to the zoom operating unit is mechanically transmitted to at least one of the first lens unit and the second lens unit;
- and
- a focus actuator arranged to move integrally with the first lens unit, and configured to utilize electric power to drive the focus lens unit in the optical axis direction with respect to the first lens unit.
Dependencies are inferred from the claim text.