Lens barrel
AssigneePanasonic Corporation
InventorDaisuke Ito
Life of this patent
Estimating the term…
Abstract
A lens barrel has a first lens group, a second lens group, a third lens group, a first support frame for supporting the first lens group, a second support frame for supporting the second lens group, a first driving unit, a shutter unit, and an aperture unit. The first lens group has an overall negative refractive power, and includes a prism. The second support frame is driven along a second optical axis by the first driving unit. The shutter unit has a shutter mechanism, a shutter drive motor configured to drive the shutter mechanism, a neutral density filter, and a filter drive motor configured to drive the neutral density filter. The shutter drive motor and the filter drive motor are disposed flanking the second optical axis when viewed in a direction along the second optical axis.
Claims20
A lens barrel, comprising:
- a main body frame;
- an aperture unit including an aperture mechanism with which a rotational force can be utilized to adjust an aperture, and a drive lever arranged to transmit the rotational force to the aperture mechanism;
- and
- a drive unit attached to the main body frame and configured to move the aperture unit with respect to the main body frame in a first direction,
- the drive lever being rotatable with respect to the main body frame and the aperture mechanism around a center axis parallel to the first direction,
- the main body frame including a guide portion arranged to guide the drive lever and configured to convert a movement of the aperture unit with respect to the main body frame in the first direction to a rotation of the drive lever around the center axis, and
- the guide portion being stationary with respect to the drive unit.
Dependencies are inferred from the claim text.