US 11,378,773 B2 · Lens driving apparatus, and camera module and optical device including same

Abstract

An embodiment comprises: a housing including first side parts and second side parts; a bobbin arranged inside the housing, and including first side parts corresponding to the first side parts of the housing and second side parts corresponding to the second side parts of the housing; a first coil arranged on an outer surface of the bobbin; a first magnet arranged on the first side parts of the housing; a second magnet arranged on any one among the second side parts of the bobbin; and a position sensor arranged on any one of the second side parts of the housing, and sensing a strength of the magnetic field of the second magnet, wherein the second magnet is located outside the first coil, and the outside of the first coil is an opposite side of a central side of the bobbin on the basis of the first coil.

Claims23

Dependent claims

A lens driving device comprising:

a housing;
a bobbin disposed in the housing;
a first coil disposed on an outer surface of the bobbin;
a first magnet disposed on the housing;
a second magnet disposed on the bobbin;
and
a position sensor disposed opposite to the second magnet in order to sense a strength of a magnetic field of the second magnet,
wherein a portion of the second magnet overlaps with the first coil in a direction perpendicular to an optical axis, and
wherein a portion of the first coil is disposed between the outer surface of the bobbin and the portion of the second magnet.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/093,077Filed 4 Apr 2017

Priority

KR 10-2016-004472312 Apr 2016

Published

US 2019/0121055 A125 Apr 2019

Granted

5 Jul 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification14 codes

G02B 7/102
By relative axial movement of several lenses, e.g. of varifocal objective lens: controlled by a microcomputer
G02B 7/08
With mechanism for focusing or varying magnification: adapted to co-operate with a remote control mechanism
G02B 13/001
Optical objectives specially designed for the purposes specified below: miniaturised objectives for electronic devices, e.g. portable telephones,…
G02B 27/646
Imaging systems using optical elements for stabilisation of the lateral and angular position of the image: compensating for small deviations, e.g.…

Lens driving apparatus, and camera module and optical device including same

Life of this patent

Lens driving apparatus, and camera module and optical device including same

Life of this patent

Abstract

Claims23