Actuator and camera module comprising same

An actuator and moving frame technology, applied in the imaging field, can solve the problems of increasing the size of the camera module, difficult to meet the requirements of lightness, thinness, and difficult to assemble, and achieve the effects of easy assembly, high assembly efficiency, and simple structure

Inactive Publication Date: 2013-06-05
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the actuator requires many mechanical components, which not only has a complex structure and is difficult to assemble, but also increases the size of the camera

Method used

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  • Actuator and camera module comprising same
  • Actuator and camera module comprising same
  • Actuator and camera module comprising same

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0017] Please refer to figure 1 and figure 2 , Is the actuator 100 of the first embodiment of the present invention. The actuator 100 includes a base 10, a fixed frame 20, a driving device 30, a movable frame 40, an elastic piece 50, and two guide rods 60.

[0018] Please refer to image 3 and Figure 4 The base 10 includes a flat plate 12, a ring-shaped protrusion 14 and four engaging posts 16. The flat plate 12 includes a bottom surface 122 and a top surface 124 opposite to the bottom surface 122. A circular light-through hole 120 is opened at the center of the plate 12, and the light-through hole 120 penetrates the bottom surface 122 and the top surface 124. A receiving groove 126 is opened on one side of the top surface 124, and the receiving groove 126 is adjacent to the light-passing hole 120 but not connected. The annular protrusion 14 extends from the top surface 124 and surrounds the light through hole 120. A part of the annular protrusion 14 is located between the r...

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Abstract

The invention relates to an actuator. The actuator includes a base, a fixing frame fixedly arranged on the base, an actuating device, a movable frame and two guiding rods. The base includes a flat plate with a light inlet hole and ring-shaped protrusions extending from the flat plate and surrounding the light inlet hole. The actuating device includes a piezoelectric motor fixedly arranged on the base and ring-shaped driving parts. The driving parts are rotatingly sleeved outside the ring-shaped protrusions and in contact with the piezoelectric motor. The upper end face of the driving parts is provided with a partly ring-shaped wedge groove. The movable frame includes a movable body and a wedge-shaped strip protruding from one end of the movable body and corresponding to the wedge groove. The movable frame is borne on the upper end surface of the base and the wedge-shaped strip is partly or totally clamped in the wedge groove. The two guiding rod penetrate through the movable body and one end of each of the guiding rod is fixed on the base. The invention further relates to a camera module comprising the actuator.

Description

technical field [0001] The invention relates to the field of imaging, in particular to an actuator and a camera module with the actuator. Background technique [0002] With the rapid development of communication technology, camera modules have been widely used in portable electronic devices such as mobile phones, and many mobile phone manufacturers have successively launched mobile phones with camera functions. However, the mobile phones with camera functions sold in the market do not all have auto-focus functions during the shooting process, which affects the quality of the captured images. [0003] A conventional camera module with an auto-focus function generally utilizes a stepping motor type actuator to drive the lens module to a target position to achieve the purpose of auto-focus. However, this kind of actuator needs to be provided with multiple transmission mechanisms, such as two to three gear transmission mechanisms, to convert the rotary motion of the stepping mo...

Claims

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Application Information

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IPC IPC(8): G03B13/36G03B17/12G02B7/09H02N11/00
Inventor 吴松青
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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