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Magnetic structure of voice coil motor, voice coil motor, zoom lens and photographic equipment

A voice coil motor and zoom lens technology, which is applied to cameras, focusing devices, electrical components, etc., can solve the problems of small zoom range of zoom lenses, and achieve the effects of increasing focusing range, easy installation, and large driving stroke.

Pending Publication Date: 2021-07-09
UNION OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to propose a magnetic structure of a voice coil motor, a voice coil motor, a zoom lens and a photographic device, aiming at solving the problem that the zoom range of the zoom lens on a relatively small photographic device is small

Method used

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  • Magnetic structure of voice coil motor, voice coil motor, zoom lens and photographic equipment
  • Magnetic structure of voice coil motor, voice coil motor, zoom lens and photographic equipment

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] It should be noted that if there are directional indications involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture. If the specific posture changes , then the directional indication changes accordingly.

[0032] In addition, if there are descriptions involving "first", "second" and so o...

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Abstract

The invention provides a magnetic structure of a voice coil motor, the voice coil motor, a zoom lens and photographic equipment, the magnetic structure of the voice coil motor is used on the zoom lens, the magnetic structure of the voice coil motor comprises a magnet yoke body, a magnet yoke cover body and a magnetic strip, the magnet yoke body comprises two straight magnet yoke sections which are oppositely arranged, and the corresponding ends of the two straight magnet yoke sections are connected through an arc-shaped magnet yoke section; the magnet yoke cover body covers the other corresponding ends of the two straight magnet yoke sections through a detachable connecting structure so as to form an annular magnet yoke body together with the magnet yoke body; and the magnetic strip is arranged in the annular magnet yoke body and is detachably mounted on one of the straight magnet yoke sections. According to the technical scheme, the annular magnet yoke body is arranged to be of the magnet yoke body and magnet yoke cover body assembling structure, so that the magnetic structure of the voice coil motor is convenient to install, and the driving stroke of the voice coil motor is increased by arranging the straight magnet yoke section.

Description

technical field [0001] The invention relates to the technical field of photographic equipment, in particular to a magnetic structure of a voice coil motor, a voice coil motor, a zoom lens and photographic equipment. Background technique [0002] Most of the existing zoom lenses are driven by a voice coil motor. The mover of the existing voice coil motor is a coil wound on the outside of the mobile carrier, and the stator is a yoke ring fixed in the lens barrel. The existing yoke ring It is a circular ring set outside the coil, and the magnet ring is set inside the yoke ring. When the zoom lens is used on a small photographic device, the width of the yoke ring is relatively narrowed, and the magnet set in the yoke ring The width of the ring is correspondingly narrowed, which results in a small driving travel of the voice coil motor, which in turn results in a small focusing range of the zoom lens. Contents of the invention [0003] The main purpose of the present invention...

Claims

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Application Information

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IPC IPC(8): G02B7/04G03B13/32H02K33/18
CPCG02B7/04G03B13/32H02K33/18
Inventor 龚俊强赵媚娇孔旭东郑旭东李昆吕强
Owner UNION OPTECH
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