Abstract: Provided are a lens driving device, a camera module, and a camera-mounted device for which the miniaturization and weight reduction can be achieved and the reliability can also be improved. The lens driving device includes auto-focusing and shake-correcting driving parts utilizing a voice coil motor. An autofocus fixing part includes a Hall element configured to detect a position of an autofocus movable part in the optical-axis direction, and the autofocus movable part includes a position-detecting magnet arranged near the Hall element. Both of an auto-focusing magnet part and the position-detecting magnet are radially magnetized.

Abstract: Provided are a lens driving device, a camera module, and a camera-mounted device for which the miniaturization and weight reduction can be achieved and the reliability can also be improved. The lens driving device includes auto-focusing and shake-correcting driving parts utilizing a voice coil motor. A shake-correcting fixing part includes a coil board consisting of a multilayer printed wiring board in which multiple unit layers consisting of a conductor layer and an insulating layer are stacked on one another, and a base on which the coil board is placed. A shake-correcting coil part, an external terminal, and a conductor pattern including a power-supply line configured to connect the external terminal to the shake-correcting coil part are integrally formed in the coil board.

Abstract: A lens driving device includes an auto-focusing driving part that includes an auto-focusing coil and driving magnets, and an optical image stabilization driving part that includes an optical image stabilization coil disposed so as to be spaced apart from the driving magnets in an optical-axis direction and the driving magnets. An autofocus fixing part includes a magnet holder to which the driving magnets are fixed by adhesion, and adhesion surfaces of the magnet holder to which the driving magnets adhere are parallel to the optical-axis direction, and first end portions of the adhesion surfaces facing an optical image stabilization fixing part in the optical-axis direction are opened. Each adhesion surface includes a recessed portion that extends in the optical-axis direction toward a second end portion, which is opposite to the first end portion, from a portion positioned closer to an inside than the first end portion.

Abstract: Provided is a lens holder driving device having the fixing part including a base member, the driving mechanism including a yoke, the position detection part including a sensor magnet attached on a corresponding outer peripheral surface of the lens holder in a direction orthogonal to the optical axis. A magnetic detection device provided to the fixing part such that the magnetic detection device is opposite to the sensor magnet. The yoke includes an outer cylinder part having a cylindrical shape. The outer cylinder part includes a plurality of plate parts which are opposite to each other in the direction orthogonal to the optical axis. The plate parts having cutout parts at positions opposite to the sensor magnet. The lens holder driving device includes a foreign matter intrusion prevention member configured to prevent intrusion of foreign matters from the cutout part of the plate part.

Abstract: Provided is a lens holder driving device having a leaf spring including: an inner periphery side end part fixed to a lens holder, an outer periphery side end part fixed to a fixing part, and a plurality of link parts provided along a circumferential direction for coupling between the inner periphery side end part and the outer periphery side end part. Each of the link parts includes at least one bent part, and an elastic arm part connected to each of both ends of the bent part. An opposite part facing the bent part, is formed at the outer periphery side end part, and the leaf spring includes at least one stretchable and flexible resin provided between the bent part and the opposite part.

Abstract: Provided is a lens drive device that, using drive force from a voice coil motor, automatically carries out focusing by moving an autofocus movable unit with respect to an autofocus fixed unit in the direction of an optical axis. The lens drive unit is provided with a position detection unit that is disposed with an intervening space on the image formation side of the autofocus movable unit in the direction of the optical axis and that is for emitting light toward the autofocus movable unit, receiving reflected light that has been reflected by the autofocus movable unit, and detecting the position of the autofocus movable unit in the direction of the optical axis on the basis of the received light intensity. Part of the member displaced along with the autofocus movable unit functions as a reflective plate for reflecting light emitted from the position detection unit.

Abstract: In a lens holder driving device, each of an upper plate spring and a lower plate spring, which are respectively provided on an upper side and a lower side of a lens holder, has an inner peripheral side end fixed to the lens holder, an outer peripheral side end fixed to a fixing part, and a plurality of arms. The plurality of arms of the upper plate spring and the plurality of arms of the lower plate spring have substantially identical shapes in a plan view. Each of the plurality of arms includes at least one U-turn shaped portion that is folded over. Either the upper plate spring or the lower plate spring has at least one stretchable and flexible resin that is provided so as to straddle over the mutually opposing parts of the U-turn shaped portion of the plurality of arms.

Abstract: Provided are a lens driving device, a camera module, and a camera-mounted device for which the miniaturization and weight reduction can be achieved and the reliability can also be improved. The lens driving device includes AF and shake-correcting driving parts utilizing a voice coil motor. An AF fixing part includes an AF control part controlling the energization current through an AF coil part. The AF driving part includes upper and lower elastic supporting parts, auto-focusing power-source lines connected to power-supplying suspension wires functioning as a shake-correcting supporting part, signal lines connected to signal suspension wires functioning as a shake-correcting supporting part, and coil power-supply lines electrically connecting the AF control part to the AF coil part. The upper elastic supporting part functions at least as the AF power-supply lines or the signal lines, and the lower elastic supporting part functions as the coil power-supply lines.

Abstract: A lens driving device includes an auto-focusing driving part that includes an auto-focusing coil and driving magnets, and an optical image stabilization driving part that includes an optical image stabilization coil disposed so as to be spaced apart from the driving magnets in an optical-axis direction and the driving magnets. An autofocus fixing part includes a magnet holder to which the driving magnets are fixed by adhesion, and adhesion surfaces of the magnet holder to which the driving magnets adhere are parallel to the optical-axis direction, and first end portions of the adhesion surfaces facing an optical image stabilization fixing part in the optical-axis direction are opened. Each adhesion surface includes a recessed portion that extends in the optical-axis direction toward a second end portion, which is opposite to the first end portion, from a portion positioned closer to an inside than the first end portion.

Abstract: A lens holder driving device is provided with a lens holder, a securing part including a base member, a drive mechanism, and a position detection unit. The drive mechanism includes a yoke that is provided to stand on the base member. The position detection unit includes a sensor magnet mounted to the outer peripheral surface of the lens holder, and a magnetic detection element provided in the securing part. The yoke is provided with a tube-shaped external cylinder part, and the external cylinder part includes a plurality of plate sections each having a cutout section. The lens holder driving device includes a foreign matter entry prevention member that prevents foreign matter from getting inside from the cutout sections of the plate sections.

Abstract: A lens driving device according to the present invention is a lens driving device that includes an auto-focus coil and an auto-focus magnet and that moves a movable auto-focus unit including the auto-focus coil in the direction of an optical axis relative to a fixed auto-focus unit including the auto-focus magnet by using a driving force of a voice coil motor constituted of the auto-focus coil and the auto-focus magnet. The fixed auto-focus unit includes a case formed of a non-magnetic material and having a rectangular shape in plan view and a base on which the case is fixed. The auto-focus magnet has the shape of a flat plate disposed on a side face of the case, and at least one of the four side faces of the case is a non-magnet-disposed face, on which the auto-focus magnet is not disposed.

Abstract: Provided are a lens driving device, a camera module, and a camera-mounted device for which the miniaturization and weight reduction can be achieved and the reliability can also be improved. The lens driving device includes auto-focusing and shake-correcting driving parts utilizing a voice coil motor. An autofocus movable part includes a lens holder adapted to hold a lens part and an auto-focusing coil part, an autofocus fixing part includes a magnet holder adapted to hold an auto-focusing magnet part, and a shake-correcting fixing part includes a base to which a shake-correcting coil part is disposed. At least one of the lens holder, magnet holder, and base is formed from a molding material consisting of polyarylate (PAR) or a PAR alloy which is a mixture of multiple resin materials including polyarylate.

Abstract: Provided are a lens driving device, a camera module, and a camera-mounted device for which the miniaturization and weight reduction can be achieved and the reliability can also be improved. The lens driving device includes auto-focusing and shake-correcting driving parts utilizing a voice coil motor. A shake-correcting fixing part includes a coil board consisting of a multilayer printed wiring board in which multiple unit layers consisting of a conductor layer and an insulating layer are stacked on one another, and a base on which the coil board is placed. A shake-correcting coil part, an external terminal, and a conductor pattern including a power-supply line configured to connect the external terminal to the shake-correcting coil part are integrally formed in the coil board.

Abstract: Provided are a lens driving device, a camera module, and a camera-mounted device for which the miniaturization and weight reduction can be achieved and the reliability can also be improved. The lens driving device includes AF and shake-correcting driving parts utilizing a voice coil motor. An AF fixing part includes an AF control part controlling the energization current through an AF coil part. The AF driving part includes upper and lower elastic supporting parts, auto-focusing power-source lines connected to power-supplying suspension wires functioning as a shake-correcting supporting part, signal lines connected to signal suspension wires functioning as a shake-correcting supporting part, and coil power-supply lines electrically connecting the AF control part to the AF coil part. The upper elastic supporting part functions at least as the AF power-supply lines or the signal lines, and the lower elastic supporting part functions as the coil power-supply lines.

Abstract: Provided are a lens driving device, a camera module, and a camera-mounted device for which the miniaturization and weight reduction can be achieved and the reliability can also be improved. The lens driving device includes auto-focusing and shake-correcting driving parts utilizing a voice coil motor. An autofocus fixing part includes a Hall element configured to detect a position of an autofocus movable part in the optical-axis direction, and the autofocus movable part includes a position-detecting magnet arranged near the Hall element. Both of an auto-focusing magnet part and the position-detecting magnet are radially magnetized.

Abstract: A lens holder drive device has: a lens holder; a fixing part that includes a base member disposed below the lens holder; a drive mechanism; an upper-side plate spring; a lower-side plate spring; and a position detection unit that detects the position of the lens holder in the optical axis direction. The drive mechanism has: a drive coil fixed to the perimeter of the lens holder; a yoke having a substantially square columnar shape; and a drive magnet disposed to face the drive coil in a first direction which is orthogonal to the optical axis direction. The position detection unit includes: a sensor magnet attached to an outer circumferential surface of the lens holder in a second direction which is orthogonal to the optical axis direction and the first direction; and a magnetic sensing element that faces the sensor magnet and is provided to the base member.

Abstract: Provided are a lens driving device, a camera module, and a camera-equipped apparatus. A lens driving device according to the present invention includes an auto-focus coil, an auto-focus magnet, and a yoke. By utilizing a driving force of a voice coil motor constituted of the auto-focus coil and the auto-focus magnet, the lens driving device moves an auto-focus movable unit, which includes the auto-focus coil, along an optical axis direction, relative to an auto-focus fixed unit including the auto-focus magnet and the yoke, to achieve automatic focusing. The yoke has a side frame on which the auto-focus magnet is fixed; a top frame projecting inward from the top edge of the side frame, and eaves projecting to a region above the auto-focus coil in regions of the top frame except the four corners thereof.

Abstract: Provided is a lens drive device that, using drive force from a voice coil motor, automatically carries out focusing by moving an autofocus movable unit with respect to an autofocus fixed unit in the direction of an optical axis. The lens drive unit is provided with a position detection unit that is disposed with an intervening space on the image formation side of the autofocus movable unit in the direction of the optical axis and that is for emitting light toward the autofocus movable unit, receiving reflected light that has been reflected by the autofocus movable unit, and detecting the position of the autofocus movable unit in the direction of the optical axis on the basis of the received light intensity. Part of the member displaced along with the autofocus movable unit functions as a reflective plate for reflecting light emitted from the position detection unit.

Abstract: A lens holder driving device is provided with a lens holder, a securing part including a base member, a drive mechanism, and a position detection unit. The drive mechanism includes a yoke that is provided to stand on the base member. The position detection unit includes a sensor magnet mounted to the outer peripheral surface of the lens holder, and a magnetic detection element provided in the securing part. The yoke is provided with a tube-shaped external cylinder part, and the external cylinder part includes a plurality of plate sections each having a cutout section. The lens holder driving device includes a foreign matter entry prevention member that prevents foreign matter from getting inside from the cutout sections of the plate sections.

Abstract: In a lens holder driving device, each of an upper plate spring and a lower plate spring, which are respectively provided on an upper side and a lower side of a lens holder, has an inner peripheral side end fixed to the lens holder, an outer peripheral side end fixed to a fixing part, and a plurality of arms. The plurality of arms of the upper plate spring and the plurality of arms of the lower plate spring have substantially identical shapes in a plan view. Each of the plurality of arms includes at least one U-turn shaped portion that is folded over. Either the upper plate spring or the lower plate spring has at least one stretchable and flexible resin that is provided so as to straddle over the mutually opposing parts of the U-turn shaped portion of the plurality of arms.