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Optical mechanism

A technology of optical components and driving mechanisms, applied in the directions of optical components, optics, electrical components, etc., can solve the problems of unfavorable mechanism miniaturization, complex circuits, signal interference, etc.

Pending Publication Date: 2018-07-10
TDK TAIWAN
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Problems solved by technology

[0002] At present, most displacement sensing methods in a voice coil motor (VCM) use a Hall effect sensor (Hall effect sensor) to measure with the corresponding magnet. When the Hall effect sensor is used to measure large-angle rotation, it needs to The two Hall sensors on the axis perform difference calculations, which increases the size of the drive mechanism and complicates the circuit
Hall sensors are often not sensitive enough to measure small angles of rotation
In addition, in order to avoid signal interference caused by other axial rotations or displacements, each axis needs to use at least one sensing magnet corresponding to a Hall sensor, which easily leads to difficulties in circuit wiring and is not conducive to the miniaturization of the mechanism

Method used

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Embodiment Construction

[0058] The optical element driving mechanism of the embodiment of the present invention will be described below. It should be readily appreciated, however, that the embodiments of the invention provide many suitable inventive concepts that can be implemented in a wide variety of specific contexts. The specific embodiments disclosed are merely illustrative of specific ways to use the invention and do not limit the scope of the invention.

[0059] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the background or context of the related art and the present disclosure, and not in an idealized or overly formal manner Interpretation, unless specifically defined herein.

[0060] Pleas...

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Abstract

An optical mechanism is provided, and the optical mechanism includes a fixed member, a movable member, an optical element, a first sensing magnet and a first sensing element, wherein the movable member is movably connected to the fixed member, and the optical element is disposed on the movable member. The first sensing magnet corresponds to the optical element and has a first magnetic polar direction. The first sensing element corresponds to the first sensing magnet for detecting the rotation of the first sensing magnet around a first axis relative to the fixed member, wherein the first axis is perpendicular to the first magnetic polar direction.

Description

technical field [0001] The invention relates to an optical element driving mechanism, in particular to an optical element driving mechanism with a directional magnetic sensor. Background technique [0002] At present, most displacement sensing methods in a voice coil motor (VCM) use a Hall effect sensor (Hall effect sensor) to measure with the corresponding magnet. When the Hall effect sensor is used to measure large-angle rotation, it needs to The two Hall sensors on the axis perform difference calculations, which increases the size of the drive mechanism and complicates the circuit. Hall sensors are often not sensitive enough to measure small angles of rotation. In addition, in order to avoid signal interference caused by other axial rotations or displacements, each axis needs to use at least one sensing magnet corresponding to one Hall sensor, which easily causes difficulties in circuit wiring and is not conducive to the miniaturization of the mechanism. Contents of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/09G03B5/00H02K41/035G03B30/00
CPCH02K41/0354G02B7/09G03B5/00
Inventor 胡朝彰陈树山游证凯
Owner TDK TAIWAN
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