Samsung Electro-mechanics Co., Ltd.

Jae Hyuk Park

Soo Cheol Lim

Hyun Phill Ko

Chul Yeub Han

Byung Hoon Kang

Won Seob Oh

Jung Wook Hwang

Jung Seok Lee

Dong Kyun Lee

Ho Seop Jeong

Chuel Jin Park

Jae Ho Moon

No Cheol Park

Myeong Gyu Song

There is provided a camera module. The camera module includes: a lens barrel including at least one lens; a housing receiving the lens barrel and having an opening in one surface thereof; an actuator driving the lens barrel through the opening; and a preload control part receiving the actuator therein and forming one surface of the housing by being coupled to the opening such that preload generated from the lens barrel and the actuator is controlled.

Camera module and lens driving device

Disclosed herein are a piezo actuator and a lens actuating module using the piezo actuator. The lens actuating module includes a housing having an accommodating space. A lens barrel is accommodated in the accommodating space. A preload unit includes a locking part locked to the outer circumference of the lens barrel and preload parts extending from both edges of the locking part outwards relative to the lens barrel. A piezo actuator is interposed between the preload parts and supported at a side thereof by force of the preload parts, the side being bent and deformed inwards and outwards, thus applying force for actuating the lens barrel in a direction of an optical axis to the preload unit. The piezo actuator which is simple in structure and assembling process and has improved actuating reliability and the lens actuating module using the piezo actuator are achieved.

Piezo actuator and lens actuating module using the same

Disclosed herein is an image stabilization mechanism for a camera module. The image stabilization mechanism includes a base, a movable stage receiving a lens barrel therein and having a magnet, and a piezoelectric actuator. The piezoelectric actuator is installed to the base, moves the movable stage in an X-axis or Y-axis direction to remove shake of the lens barrel, and maintains contact with the movable stage because of magnetic attractive force between the piezoelectric actuator and the magnet. The image stabilization mechanism reduces the number of components, thus simplifying the structure and minimizing an increase in height.

Image stabilization mechanism for camera module

A lens actuating module. The module includes a housing and a lens barrel. received in an accommodating space of the housing and having a lens therein. A driving unit applies a driving force to the lens barrel such that the barrel can be moved up in an optical axis direction by a pulling force of contraction of an SMA (shape memory alloy) wire fixed to the housing. A rotary member is interposed between the housing and the lens barrel. A preload unit pulls the lens barrel in the optical axis direction such that the lens barrel can move down to an original position, and pulls the lens barrel in a direction perpendicular to the optical axis to maintain a contact of the lens barrel with the rotary member. The lens barrel is moved by the contracted or extended amount of the SMA wire, thus realizing a simple structure and miniaturization.

Lens actuating module

Disclosed herein is a lens actuating module. The module includes a housing having an accommodating space and a bush guide. A lens barrel is accommodated in the accommodating space and includes a lens and a barrel hook. A driving unit applies a driving force to a bush such that it is moved up in the direction of the optical axis, by pulling force of contraction of a shape memory alloy wire. The bush is guided by the bush guide and engages with the barrel hook. A rotary member is interposed between the housing and the lens barrel. A preload unit pulls the lens barrel in the direction of the optical axis such that the lens barrel moves down to an original position, and pulls the lens barrel in a direction perpendicular to the optical axis to maintain a contact of the lens barrel with the rotary member.

Disclosed herein is a camera module. The camera module includes a lens barrel having at least one lens which brings an image of a subject into focus. A housing having a space for the lens barrel, and friction member formed in axially. A piezoelectric actuator provided in an outer circumferential surface of the lens barrel, and generating vibration when external voltage is applied to the piezoelectric actuator, with a through hole formed for having the friction member. An elastic member include the friction member, and inserted into the through hole of the piezoelectric actuator, and applying the vibrations to the friction member.

Camera module

The present invention relates to an image stabilizing apparatus for a camera module capable of effectively stabilizing an image of the camera module, implementing miniaturization and slimness, and reducing a manufacture cost of the camera module by supplying a two-axial correction structure to perform correction in an X axial direction or an Y axial direction of an automatic focusing unit through a ball holder having upper balls and lower balls. To achieve the object, the present invention provides an image stabilizing apparatus for a camera module including; an automatic focusing unit with slide grooves having lengths in an X axial direction or in an Y axial direction perpendicular to an optical axis on a bottom surface; a driving unit for moving the automatic focusing unit in the X axial direction or the Y axial direction; a ball holder installed on the bottom surface of the automatic focusing unit and provided with upper balls slidably coupled to the slide grooves on a top surface and lower balls on a bottom surface; and a lower guide which is installed on the bottom surface of the ball holder and includes slide grooves on a top surface, wherein the slide grooves are slidably coupled with the lower balls of the ball holder and have lengths in the Y axial direction or the X axial direction perpendicular to a longitudinal direction of the slide grooves of the automatic focusing unit.

Image stabilizing apparatus for camera module

The present invention relates to an optical image stabilizing apparatus for a micro-camera module capable of effectively stabilizing an image of the camera module and implementing miniaturization of the camera module by supplying an 'L'-shaped biaxial guide structure to prevent a tilt in a Y axial direction while moving an automatic focusing unit of the camera module in a horizontal X axial direction and to prevent a tilt in an X axial direction while moving the automatic focusing unit of the camera module in a horizontal Y axial direction.

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Seoul, South Korea

Jae Hyuk Park