Huizhou Dayawan Ever Bright Electronic Industry Co

Jss Optical Technology Co., Ltd.

Huizhou Daya Bay Jss Optical Technology. Co., Ltd.

Akai Electric Co., Ltd.

Largan Precision Co., Ltd.

Micro Win Tech Inc.

Other

Xinhongzhou Precision Technology Co., Ltd

Kokichi Terajima

Shinichi Aotsu

The present invention aims to provide a lens driving device capable of realizing the reduction of power consumption by improving the driving efficiency of an electromagnetic drive mechanism. The lens driving device includes: one or mores drive coils having one or more forward path sides and one or more return path sides, and drive magnets each having a forward path side magnet plate and a return path side magnet plate. The magnetization directions of the forward path side magnet plate and the return path side magnet plate of each drive magnets define an angle which is expanded towards the oppositely arranged one or more drive coils. The magnetic induction intensity applied to the drive coils from the drive magnets can be increased and improved, and thus powerful lorentz force can be effectively generated by the drive coils after being electrified.

Lens driving device

The present invention provides a lens driving device with a shaking correction function, which does not need magnets for position detection and also cannot reduce driving force during swinging. The lens driving device is configured as follows: a square frame shaped magnet support, each magnet is a cylinder in an isosceles trapezoid shape and is mounted in a corresponding corner in a manner that its long base faces the center of the magnet support, one or two X-direction magnetic force detection mechanisms have detection sensitivity for X-axis direction components of magnetic induction intensity and are mounted on the outer side of the corresponding magnets in a Y-axis direction, and one or two Y-direction magnetic force detection mechanisms have detection sensitivity for Y-axis direction components of magnetic induction intensity and are mounted on the outer side of the corresponding magnets in an X-axis direction.

Lens driving device with shaking correction function having magnet yokes with ends separated from and opposite to magnetic force detection mechanisms

A lens driving device includes a lens carrier for maintaining a lens, a base for supporting the lens carrier, an first electromagnetic drive mechanism and an second electromagnetic drive mechanism which are mounted between the lens carrier and the base, and a front side spring component and a back side spring component which are connected with each other through connecting components. One of the front and back side spring components is connected with the lens carrier, the other of which is connected with the base. The lens driving device is difficult to damage when suffering from external force and is capable of playing the auto focus and shaking functions correction stably.

Lens driving device with improved suspension support

The present invention aims to provide an electromagnetic driving device capable of efficiently driving swinging coils and being more miniaturized. A driving coil wound around the Z axis taken as a direction of the optical axis of a lens is mounted on a lens support. Magnets are mounted in an inner side box body for supporting the lens support to be capable of moving in the direction of Z axis. The swinging coils are mounted in an outer side box body for supporting the inner side box body to be capable of swinging in the direction orthogonal to the Z axis. The swinging coils includes a first to a fourth coils wound around axes orthogonal to the Z axis. The magnets include a plurality of magnet pieces configured opposite to the swinging coils.

Electromagnetic driving device

A lens driver with camera shake reducing function in which the suspension wire will not easily undergo a plastic bending and the camera shake reducing function will not be degraded and the photographed image will not be deformed when mounting the lens or impacting the lens. The direction of photographed object is set to the forward direction of the optical axis of the lens, and the invention comprises: an auto-focusing unit that moves the lens in the direction of optical axis; and a camera shake reducing unit that causes the auto-focusing unit to swing in a direction at right angle to the direction of optical axis, and the auto-focusing unit comprises a magnet for focusing which is mounted on the outer circumference of the lens and which is held by a magnet holder, and the camera shake reducing unit comprises: a suspension wire which extending in the direction of optical axis and the forward direction of the optical axis of which is connected with the magnet holder and which supports the magnet holder in form of suspension rack such that it may swing; and a yoke that faces the magnet for focusing in a manner that it is spaced from the magnet for focusing in forward direction of the optical axis.

Lens driver with camera shake reducing function

A lens driver with camera shake reducing function, in which the spring member is easily mountable, and the spring member does not undergo a plastic deformation. The lens driver with camera shake reducing function takes the direction of the photographed object as the forward direction of the optical axis of the lens, comprising: a focusing unit, which causes a lens holder holding the lens to move in the direction of the optical axis; and a camera shake reducing unit, which causes the focusing unit to swing in a direction orthogonal to the direction of the optical axis, characterized in that, comprising: a connecting hole, which is formed at the focusing unit and the camera shake reducing unit and which is opened in the direction of the optical axis; a spring member, which extends in the direction of the optical axis and the end of which passes through the connecting hole; and an open route, which extends from the connection hole of at least one of the focusing unit and the camera shake reducing unit in a direction orthogonal to the optical axis, and which engages the spring member temporarily before the spring member is connected to the connecting hole.

The present invention provides a lens driving device with image stabilizer function with high driving efficiency of second coils for swinging the lens, and the swing part is light. A lens support accommodating the first coil wound around the Z axis, and a base are respectively connected with first spring components extending along the direction perpendicular to the Z direction. The second coils are wound around the X direction and the Y direction and configured on the outer side of the first coil. A lens carrier and a carrier bracket provided with the second coils are connected with the second spring component extending along the Z direction. The second spring component is supported by the lens carrier and can swing in the X direction and the Y direction.

Lens driving device with image stablilizer function

The present invention aims to provide an actuator unit. When the actuator unit is assembled in a lens driving device and works, a lens support beginning to move cannot be inclined. A spring component () is provided with an inner side retaining part (), an outer side retaining part (), a plurality of wrist parts (), a plurality of inner side connecting parts (), a plurality of outer side connecting parts () and spoke parts () for connecting the inner side retaining part () with the outer side retaining part () in a releasable manner, wherein the lens support () is supported by the spring components (), and an electromagnetic driving mechanism () is utilized for enabling the lens support () to move.

Actuator unit

The present invention aims to provide a lens driving device which can prevent a lens support from being suspended in an inclined state and can correspond to energizing amount and carry out appropriate linear movement action. A front side primary coil and a rear side primary coil are respectively wound around an axis parallel to an optical axis in a manner of being coaxial to a secondary coil and are combined with each other through electromagnetic induction. The secondary coil is such disposed that its two coil terminals are connected with two ends of a diode respectively. The secondary coil and a permanent magnet assembly are arranged opposite to each other at an interval along the radial direction and a driving current is supplied to the primary coils.

The present invention provides a lens driving device includes at least two spring components each of which includes an inner side retaining part, an outer side retaining part, a plurality of wrist parts configured between the inner and outer side retaining parts and prolonged along the circumference direction, inner side connecting parts for connecting one ends of the wrist parts with the inner side connecting part, and outer side connecting parts for connecting the other ends of the wrist parts with the outer side retaining part. Moreover, serpentine necking parts are formed at the roots of the connecting part of the inner side retaining part, straight line-shaped necking parts are formed at the roots of the connecting part of the outer side retaining part, so that stresses acting on the inner side connecting parts and the outer side connecting parts during assembling are absorbed.

The present invention aims to provide a lens driving device. Inclination generated by a lens support can be reduced when a camera shoots towards any direction, so that distortion cannot be generated for a shot image. Each of a front side spring component and a back side spring components includes an inner side retaining part, an outer side retaining part, two wrist parts, two inner side connecting parts and two outer side connecting parts. The two wrist parts extend along the circumferential direction and are used for connecting the inner and outer side retaining parts. The inner side connecting parts connect one ends of the wrist parts with the inner side retaining part. And the outer side connecting parts connect the other ends of the corresponding wrist parts with the outer side retaining part. The extending angle of each wrist part is at least 180 degrees.

The present invention provides a simple and compact lens driving device with a shake suppression function. In a VCM lens driving device, the driving coilmounted on the outer circumference of the lens holderincludes a first through third coils-, and the permanent magnetmounted on the casingand opposite to the driving coilwith spacing includes a first through fourth magnets-. The first magnetand the second magnetare facing the first coilat the middle of the lens holder; the third magnetis facing the first coiland the second coilat the imaged-object side of the first coil; the fourth magnetis facing the first coiland the third coilat the opposite side to the imaged-object side of the first coil

Driving device for a lens assembly

This invention provides an electromagnetically driven device applicable to a lens driving device with an anti-shake function by a simple structure that enables the movable member to swing around an axis thereof. A flat spring for swinging connects to a stationary frame body provided with a permanent magnet set and a coil set for swinging is mounted on an outer circumference of a movable frame body. When an axial direction of the movable frame body is designated as the Z axis, the coil set for swinging including a first through fourth coils arranged around the Z axis and spaced at uniform intervals with each winding around an axis perpendicular to the Z axis and opposite to the permanent magnet set respectively. The permanent magnet set includes a first through fourth magnets, wherein each magnet is arranged between two adjacent coils among the first through fourth coils.

Electromagnetically driven device with shake suppression

In the present invention, a lens driving device has appropriate offset for miniaturization, excellent linearity of driving current versus displacement, and good displacement sensitivity. A casing holding a yoke with at least one permanent magnet mounted on an inner circumference thereof is connected with a lens holder having a driving coil installed on an outer sidewall thereof between an upper spring member and a lower spring member. When the driving coil is not powered, the lens holder props against the casing at a side opposite to an imaged object. When the lens holder props against the casing, the position of the driving coil along Z axis causing a magnitude of driving magnetic field intersecting with the driving coil is 50%&#x2dc;90% of a maximum value of the driving magnetic field intersecting with the driving coil while the lens holder moves toward the imaged object.

A vibration control apparatus that can impart self-induced vibration by stabilizing the vibrator at a frequency in near agreement with its mechanical resonance frequency vibration f.sub.s is provided. A vibrator has a pair of piezo-electric elements on the side surface of vibration member having a resonance point. A drive apparatus has signal output terminal that outputs the drive signal of vibrator. First and second feedback amplifiers each have feedback input terminals. A third feedback amplifier has a feedback input terminal and a signal input terminal. The feedback input terminals of the first and second feedback amplifiers are connected to one electrode of each of the piezo-electric elements. The feedback input terminal of the third feedback amplifier is connected to the other electrodes of the pair of piezo-electric elements. The signal input terminal is connected to signal output terminal of drive apparatus. A signal based on the output signal of third feedback amplifier is fed back to the drive apparatus to impart self-induced vibration to the vibrator.

Growing community of inventors

Tokyo, Japan

Kokichi Terajima