Camera using piezoelectric actuator and camera device comprising same
AssigneeLG Innotek Co., Ltd.
InventorsMin Seong Kim, Min Ook Kim
Life of this patent
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Abstract
Disclosed in an embodiment of the present invention is a camera actuator comprising: a base; a first lens assembly and a second lens assembly, which are disposed in order in the direction of an optical axis within the base; and a driving unit for moving the first lens assembly and the second lens assembly, wherein the driving unit includes a first lens driving unit for moving the first lens assembly and a second lens driving unit for moving the second lens assembly, the first lens driving unit includes a first piezoelectric unit, the second lens driving unit includes a second piezoelectric unit, and the first piezoelectric unit is disposed to be staggered, in the direction of the optical axis, with respect to the second piezoelectric unit.
Claims14
A camera actuator comprising:
- a base;
- a first lens assembly and a second lens assembly disposed sequentially in an optical axis direction in the base;
- and
- a driving unit configured to move the first lens assembly and the second lens assembly,
- wherein the driving unit includes a first lens driving unit configured to move the first lens assembly and a second lens driving unit configured to move the second lens assembly,
- wherein the first lens driving unit includes a first piezoelectric unit,
- wherein the second lens driving unit includes a second piezoelectric unit,
- wherein the first piezoelectric unit and the second piezoelectric unit are each configured to shrink and expand in the optical axis direction,
- wherein the first piezoelectric unit is disposed to be misaligned with the second piezoelectric unit in the optical axis direction,
- wherein the first lens driving unit further includes a first rod connected to the first piezoelectric unit,
- wherein the first lens assembly further includes a first elastic unit connected to the first rod,
- wherein the second lens driving unit further includes a second rod connected to the second piezoelectric unit,
- wherein the second lens assembly further includes a second elastic unit connected to the second rod,
- wherein the first elastic unit includes a first sub-elastic unit and a second sub-elastic unit facing each other, and
- wherein the second elastic unit includes a third sub-elastic unit and a fourth sub-elastic unit facing each other.
A camera actuator comprising:
- a base;
- a first lens assembly and a second lens assembly disposed sequentially in an optical axis direction in the base;
- and
- a driving unit configured to move the first lens assembly and the second lens assembly,
- wherein the driving unit includes a first lens driving unit configured to move the first lens assembly and a second lens driving unit configured to move the second lens assembly,
- wherein the first lens driving unit includes a first piezoelectric unit,
- wherein the second lens driving unit includes a second piezoelectric unit,
- wherein the first piezoelectric unit is disposed to be misaligned with the second piezoelectric unit in the optical axis direction,
- wherein the first lens driving unit further includes a first rod connected to the first piezoelectric unit,
- wherein the first lens assembly further includes a first elastic unit connected to the first rod,
- wherein the second lens driving unit further includes a second rod connected to the second piezoelectric unit,
- wherein the second lens assembly further includes a second elastic unit connected to the second rod,
- wherein the first elastic unit includes a first sub-elastic unit and a second sub-elastic unit facing each other, and
- wherein the second elastic unit includes a third sub-elastic unit and a fourth sub-elastic unit facing each other.
Dependencies are inferred from the claim text.