Lens driving device, image stabilizing unit, and image pickup apparatus
AssigneeCanon Kabushiki Kaisha
InventorMasafumi Kimura
Life of this patent
Estimating the term…
Abstract
A lens driving device having a simplified structure in which a holding member is moved relative to a stationary member with appropriate viscous damping is provided. The lens driving device includes the holding member configured to hold a compensation lens for image stabilization, the stationary member configured to support the holding member in a movable manner in a plane that is perpendicular to a light axis, a driving unit configured to change the position of the holding member relative to the stationary member, and a damping material disposed between the holding member and the stationary member. The damping material has a transition region in a frequency range between 0.3 Hz and 100 Hz.
Claims11
A lens driving device comprising:
- a holding member configured to hold a compensation lens for image stabilization;
- a stationary member configured to support the holding member in a movable manner in a plane that is perpendicular to a light axis;
- a driving unit configured to change the position of the holding member relative to the stationary member;
- and
- a damping material disposed between the holding member and the stationary member, the damping material having a transition region in a frequency range between 0.3 Hz and 100 Hz,
- wherein an axis member parallel to the light axis is provided to either of the holding member or the stationary member, a hole parallel to the light axis is provided to the holding member or the other stationary member, the axis member is inserted into the hole, and the damping material is disposed between the axis member and the hole.
An image stabilizing unit comprising:
- a holding member configured to hold a compensation lens for image stabilization;
- a stationary member configured to support the holding member in a movable manner in a plane that is perpendicular to a light axis;
- a driving unit configured to change the position of the holding member relative to the stationary member;
- a plurality of balls sandwiched between the holding member and the driving unit;
- and
- a biasing member configured to bias the plurality of balls to be sandwiched between the holding member and the driving unit, one end of the biasing member is locked to the holding member and the other end of the driving unit is locked to the stationary member, and
- a damping material disposed between the holding member and the stationary member, the damping material having a transition region in a frequency range between 0.3 Hz and 100 Hz,
- wherein an axis member parallel to the light axis is provided to either of the holding member or the stationary member, a hole parallel to the light axis is provided to the holding member or the other stationary member, the axis member is inserted into the hole, and the damping material is disposed between the axis member and the hole.
Dependencies are inferred from the claim text.