Samsung Electro-mechanics Co., Ltd.

Sang Min On

Byung Woo Kang

Soo Cheol Lim

Dong Kyun Lee

Burhanettin Koc

Sung Ryung Park

Jung Ho Ryu

Young Bok Yoon

Jung Seok Lee

Seong Ho Kang

Yutaka Yamauchi

Hee Su Kang

Su Cheol Lim

An optical image stabilizer is provided, in which magnets and coils are arranged such that they oppose each other. The Hall sensors are arranged such that one face of each is opposed to one face of the magnets, respectively. The Hall sensors can detect the location of a group of lenses by generating a corresponding signal in response to a variation in magnetic force following a variation in the gap between magnets depending on the direction in which a group of lenses is driven, and simultaneously, in response to a variation in magnetic force that occurs when the group of lenses is displaced in the direction that intersects the direction of the gap.

Optical image stabilizer detecting X direction displacement and Y direction displacement of lens group

Disclosed herein is camera module including: a lens barrel; an auto-focusing actuator; and a handshake compensating actuator, wherein the auto-focusing actuator and the handshake compensating actuator include a common magnet for actuating auto-focusing and handshake compensation, an auto-focusing corner magnet, a coil for auto-focusing, and a coil for handshake compensation, one surface of the common magnet for actuating auto-focusing and handshake compensation and the auto-focusing corner magnet face the coil for auto-focusing and the other surface of the common magnet for actuating auto-focusing and handshake compensation faces the coil for handshake compensation.

Camera module

An optical image stabilizer, in which a magnet and a coil are arranged such that they oppose each other. The Hall sensor is arranged such that one face thereof is opposed to one face of the magnet. The Hall sensor can easily detect the location of a group of lenses by generating a corresponding signal in response to a variation in magnetic force following a variation in the gap between magnets depending on the direction in which a group of lenses is driven, and simultaneously, in response to a variation in magnetic force that occurs when the group of lenses is displaced in the direction that intersects the direction of the gap.

Optical image stablilizer detecting X direction displacement and Y direction displacement of lens group

Disclosed herein is a camera module, including: a lens holder including a receiving unit receiving a lens module therein; a driving unit joined to the lens holder to be movable in a direction vertical to an optical-axis direction; a housing in which the driving unit is installed to be movable in the vertical direction to the optical-axis direction and having a protruding member that protrudes on one surface thereof; a shape memory alloy wire part connected to the driving unit to generate driving force in the vertical direction to the optical-axis direction; and an elastic member applying a preload to the shape memory alloy wire part to cause initial transformation.

Camera module including handshaking correcting device

There is provided a camera module including: a housing; a lens unit mounted in the housing; a hand shake correction unit correcting a movement of the lens unit with respect to the housing; and a damping member disposed between the housing and the lens unit to thereby reduce the movement of the lens unit through the hand shake correction unit.

Disclosed herein are a suspension wire for compensating for hand vibration and an image photographing device having the same. The suspension wire for compensating for hand vibration, which is mounted between an optical unit and a housing so as to have a length thereof in an optical axis direction to float and support the optical unit within the housing, includes: a wire body having both ends thereof each fixed to the optical unit and the housing; and a deformation buffer formed in the wire body to allow the wire body to flexibly receive impact force when external impact is applied to the wire body, thereby preventing permanent deformation or fracture of the wire body.

Suspension wire for compensating for hand vibration and image photographing device having the same

Disclosed herein is an image photographing device having a function for compensating hand vibration. The image photographing device having a function for compensating hand vibration includes: an optical unit; a magnet combined with an outer peripheral surface of the optical unit; a housing inserted with the optical unit and the magnet and having coils disposed at a position corresponding to the magnet; suspension wires arranged at four corners of the optical unit, having the upper end portions and the lower end portions each combined with the optical unit and the housing to support the optical unit in a state floated from the bottom surface of the housing, and having a predetermined bending part formed at any point; a flexible printed circuit board surrounding the outer peripheral surface of the housing and applying current to the coils; and a substrate having the image sensor mounted on the top surface thereof and combined with the lower portion of the housing.

Image photographing device having function for compensating hand vibration

A piezoelectric ultrasonic motor includes a piezoelectric stator including a hollow metal tube having a quadrangular cross section and four piezoelectric elements each installed in each outer face of the metal tube; a rotary shaft including a rotation bar inserted into an inner space of the metal tube, an upper rotation member provided around the rotation bar in contact with an upper surface of the piezoelectric stator, the rotation member rotating in response to the strain of the piezoelectric stator, a lower rotation member adapted to restrain the rotation of the rotation bar and contacting a lower surface of the piezoelectric stator and a power transmission member provided at one portion of the rotation bar to transmit the rotation of the rotation member to an object to be transported; and a power supply to apply a supply voltage necessary for the actuation of the piezoelectric stator.

Piezoelectric ultrasonic motor

A piezoelectric ultrasonic motor includes a piezoelectric stator including a metal tube with an inner space and piezoelectric elements mounted on the outer circumference of the metal tube, a rotary shaft including a rotation bar inserted into the inner space of the metal tube, and a rotation member provided around the rotation bar in contact with the piezoelectric stator. The piezoelectric stator strains with an electric field applied thereto, and the rotation member rotates in response to the strain of the piezoelectric stator. A power transmission member is provided at one portion of the rotation bar to transmit the rotation of the rotation member to an object to be transported. With face contact the motor achieves stable actuation together with enhanced force and sufficient strain, and a flexibility to be applied to various apparatuses such as a camera module.

Growing community of inventors

Seoul, South Korea

Sang Min On