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Compact electromagnetic actuator

An electromagnetic actuator and actuator technology, applied in electromagnets, movable winding electromagnets, televisions, etc., can solve problems such as limited applications, BSMOIS actuators are not obvious, and image quality deteriorates

Inactive Publication Date: 2015-03-25
SUNMING TECH HK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the problem with the LBT method is that the image quality deteriorates rapidly as the tilt angle of the lens increases
This significantly limits its application
However, such a problem does not occur with BSM OIS actuators, or at least the problem is not noticeable for BSM OIS actuators

Method used

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Embodiment Construction

[0044] In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of claimed subject matter. It will be understood, however, by those skilled in the art that claimed subject matter may be practiced without these specific details. In addition, methods, devices, or systems that would be known by one of ordinary skill have not been described in detail so as not to obscure claimed subject matter.

[0045] Reference in the specification to "one embodiment" or "an embodiment" may mean that a particular feature, structure, or characteristic described in connection with a particular embodiment can be included in at least one embodiment of the claimed subject matter. Thus, appearances of the words "in one embodiment" or "an embodiment" in various places in this specification are not intended to refer to the same embodiment or any one specific embodiment described. Furthermore, it should be understood that the particular ...

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Abstract

A compact electromagnetic actuator for driving a lens includes a lens holder (18) used to hold a lens or a lens assembly which defines an optical axis, an image stabilization (IS) actuator (10) provided at one end of the lens holder (18) for producing a linear motion in a plane perpendicular to the optical axis, and an autofocus (AF) actuator (14) provided at an opposite end of the lens holder (18) for producing a linear motion along the optical axis. An AF connection mechanism (16) can be used to connect the autofocus actuator (14) to the lens holder (18). An IS connection mechanism (12) can be used to connect the image stabilization actuator (10) to the lens holder (18).

Description

technical field [0001] The present application relates to miniaturized electromagnetic actuators capable of driving lens assemblies along X, Y and Z axes. Background technique [0002] As mobile phones continue to evolve into converged devices, more and more camera functions have been integrated into mobile phones. Today, voice-coil motor (VCM)-based autofocus camera functionality is a standard feature of high-end camera phones or smartphones. Along with autofocus (AF), optical image stabilization (OIS) is becoming a market interest and will soon be the next important camera feature to be integrated into mobile phones. Various inventions related to OIS have been disclosed, such as those disclosed in US patent applications US2006 / 0061660, US2007 / 0103555, US2010 / 0098394, US2007 / 0236577, and US2013 / 0016428, and US patents US7881598, US7725014. In all the above disclosed inventions, three main types of techniques are mostly employed: (1) subject tilt method; (2) subject shift ...

Claims

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Application Information

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IPC IPC(8): G03B13/36G03B5/00H04N5/232
CPCG03B5/00G03B13/36H04N23/55H04N23/687G02B7/04G03B3/10G03B2205/0015G03B2205/0069G02B7/28H01F7/0289H01F7/066G02B27/646H04N23/54H04N23/57
Inventor 林小军
Owner SUNMING TECH HK
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