Lens drive apparatus, camera module and camera
AssigneeMitsumi Electric Co., Ltd.
InventorsAkihiro Moriya, Masayoshi Sugawara
Life of this patent
Estimating the term…
Abstract
A lens drive apparatus that displaces a lens holder in a direction of an optical axis and a direction orthogonal to the optical axis comprises: a drive section that displaces an assembly, which is formed by assembling a lens holder displaceable in the direction of the optical axis together with a plurality of magnets disposed around the lens holder, in the direction orthogonal to the optical axis by the plurality of magnets and a plurality of coils disposed at positions facing the magnets in collaboration with each other, wherein the plurality of coils include two coils placed side by side with respect to a same magnet.
Claims9
A lens drive apparatus for use in a small camera module, which displaces a lens holder in a direction of an optical axis and first and second directions orthogonal to the optical axis and to each other, the lens drive apparatus comprising:
- a drive section that rocks an assembly, which is formed by assembling the lens holder together with a plurality of magnets disposed around the lens holder and together with a guide member configured to guide the lens holder such that the lens holder can move with respect to the plurality of magnets in the direction of the optical axis, in the first and second directions by the plurality of magnets and a plurality of coils disposed at positions facing the plurality of magnets in collaboration with each other;
- and
- a rocking support member configured to support the assembly such that the assembly can rock in the first and second directions, wherein:
- the plurality of coils include two coils placed side-by-side such that the two coils face a same magnet of the plurality of magnets and are separated from each other in a longitudinal direction of the same magnet, the longitudinal direction of the same magnet being perpendicular to the optical axis, and
- the plurality of coils include:
- two first coils disposed to face a first magnet of the plurality of magnets and to be spaced from each other in the first direction;
- and
- two second coils disposed to face a second magnet of the plurality of magnets and to be spaced from each other in the second direction.
Dependencies are inferred from the claim text.