Mitsumi Electric Company Ltd.

Kabushiki Kaisha Toshiba

Mitsumi Electronics Co., Ltd.

Akihiro Moriya

Masayoshi Sugawara

Keiichi Sato

Makoto Ariji

Satoshi Ajiki

Kyouichi Sasamoto

Morisige Kinjo

A camera module has a magnet which is held by a magnet holder included in an optical device part together with a lens holder and which is used in common as a magnet in collaboration with a first coil to move an imaging device and the lens holder relative to each other in a direction of an optical axis, a magnet in collaboration with a second coil to move the imaging device and the optical device part relative to each other in a direction orthogonal to the optical axis, and a magnet of which a magnetic force is detected by a Hall device.

Lens drive apparatus, camera module and camera

A lens drive apparatus has: a magnet and a coil configured to displace the lens holder in a direction of an optical axis and a direction orthogonal to the optical axis in collaboration with each other. The coil includes first and second coils. The magnet includes first and second magnets. The first coil is disposed on an outer periphery of the lens holder. The first magnet, the second magnet, the second coil and a Hall device are each disposed to be spaced from the outer periphery of the lens holder at respective positions different from each other in the direction of the optical axis. Inner surfaces of the magnets at a side of the lens holder and outer surfaces of the magnets at an opposite side of the inner surfaces have reverse polarities, the inner surfaces have reverse polarities, and the outer surfaces have reverse polarities.

A lens drive apparatus that displaces a lens holder in a direction of an optical axis and a direction orthogonal to the optical axis in collaboration with a magnet and a coil that includes: a first coil that is disposed at a position shifted in a radial direction of the lens holder with respect to the magnet and displaces the lens holder in the direction of the optical axis; and a second coil that is disposed at a position shifted in the direction of the optical axis with respect to the magnet and displaces the lens holder in the direction orthogonal to the optical axis, comprises a Hall device that is disposed at a position shifted in the direction of the optical axis with respect to the second coil and detects a position of the magnet in the direction orthogonal to the optical axis.

Camera-shake correction apparatus, camera module and camera

A lens drive apparatus includes a plurality of protrusions that protrude from an end of a magnet holder in a direction of an optical axis toward an inner wall surface of a cover and function as a fracture prevention supporting member. The plurality of protrusions are configured to support prevention of fracture in a plurality of suspension wires by contacting the inner wall surface of the cover when a magnet holder moves in the direction of the optical axis.

Lens drive apparatus

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.

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: an assembly that is formed by assembling the lens holder together with a magnet disposed around the lens holder; a housing that has a base and a cover that are configured to house the assembly; and a planar coil that is attached inside of the housing such that a coil plane thereof facing the magnet is in parallel with the optical axis, the planar coil being configured to displace the assembly in the direction orthogonal to the optical axis in collaboration with the magnet, wherein the base has an aperture having a size greater than a displacement range of the optical axis resulting from displacement of the assembly in the direction orthogonal to the optical axis.

A lens drive apparatus includes a damper compound that is disposed between at least one protrusion and a fixed member and that suppresses undesired resonance of an auto-focusing lens driving section in a direction of an optical axis. The at least one protrusion protrudes from a magnet holder in the direction of the optical axis toward the fixed member and is inserted into at least one hole of a leaf spring provided to the auto-focusing lens driving section.

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: an assembly that is formed by assembling the lens holder together with a magnet disposed around the lens holder; a coil that is disposed at a position facing the magnet in a housing that houses the assembly and displaces the assembly in the direction orthogonal to the optical axis in collaboration with the magnet; and a base that serves as a bottom of the housing, and has an aperture having a size greater than a displacement range of the optical axis resulting from displacement of the assembly in the direction orthogonal to the optical axis.

A lens drive apparatus includes an image stabilizer portion moves an auto-focusing lens driving portion in first and second directions orthogonal to an optical axis and perpendicular to each other, and the image stabilizer portion includes a fixed member disposed apart from the auto-focusing lens driving portion in a direction of the optical axis, a plurality of suspension wires each comprising an end fixed to the fixed member at an outer region thereof, a narrowing portion that is disposed between the fixed member and the auto-focusing lens driving portion and that narrows part of a gap between the fixed member and the auto-focusing lens driving portion, and a damper compound that is disposed at the narrowed part of the gap between the fixed member and the auto-focusing lens driving portion and that suppress undesired resonance in the direction of the optical axis of the auto-focusing lens driving portion.

Lens drive apparatus including damper compound suppressing undesired resonance

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 magnet disposed around the lens holder, in the direction orthogonal to the optical axis by the magnet and a coil disposed at a position facing the magnet in collaboration with each other; a base that serves as a bottom of a housing that houses the assembly; and a Hall device that is provided to the base and detects a position of the magnet in the direction orthogonal to the optical axis.

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 magnet disposed around the lens holder, in the direction orthogonal to the optical axis by the magnet and a coil disposed at a position facing the magnet in collaboration with each other; and a Hall device that is disposed at a position shifted in the direction of the optical axis with respect to the magnet and detects a position of the magnet in the direction orthogonal to the optical axis.

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 a lens holder, displaceable in the direction of the optical axis, in the direction orthogonal to the optical axis in collaboration with a plurality of magnets and a plurality of coils disposed at positions facing the magnets, wherein the plurality of magnets include two magnets that are disposed at positions mutually shifted with respect to each other in the direction of the optical axis, and the plurality of coils include a coil disposed between the two magnets.

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 magnet disposed around the lens holder, in the direction orthogonal to the optical axis by the magnet and a coil disposed at a position facing the magnet in collaboration with each other; and a base that has an aperture having a size greater than a displacement range of the optical axis resulting from displacement of the assembly in the direction orthogonal to the optical axis.

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 magnet disposed around the lens holder, in the direction orthogonal to the optical axis by the magnet and a coil disposed at a position facing the magnet in collaboration with each other; and a Hall device that is disposed at a position shifted in the direction of the optical axis with respect to the coil and detects a position of the magnet in the direction orthogonal to the optical axis.

A lens drive apparatus comprises: an assembly that is formed by assembling a lens holder together with a magnet holder that holds a magnet; a first drive section that displaces the lens holder in a direction of an optical axis in collaboration with the magnet and a first coil; and a second drive section that displaces the assembly in a direction orthogonal to the optical axis in collaboration with the magnet and a second coil, wherein the magnet holder comprises a hollow part that accommodates the magnet at a position facing both of the first coil and the second coil.

Growing community of inventors

Tokyo, Japan

Akihiro Moriya