Camera actuator and camera module comprising same

Patent metadata

Field	Value
Publication number	US-12468169-B2
Application number	US-202118042364-A
Country	US
Kind code	B2
Filing date	Aug 17, 2021
Priority date	Aug 19, 2020
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

An embodiment of the present invention provides a camera actuator comprising: a housing; a mover disposed inside the housing and including an optical member; a tilting guide part for guiding tilting of the mover; and a driving part disposed inside the housing and driving the motor, wherein, the driving part comprises at least one magnet and at least one coil, and the at least one magnet at least partially overlaps the tilting guide part in a first direction perpendicular to an optical axis or in a second direction perpendicular to the optical axis.

First claim

The invention claimed is:

1 . A camera actuator comprising:
a housing; a mover disposed in the housing and including an optical member; a tilting guide part configured to guide tilting of the mover; and a driving part disposed in the housing and configured to drive the mover, wherein the driving part includes at least one magnet and at least one coil, and wherein at least a portion of the at least one magnet overlaps the tilting guide part in a first direction perpendicular to an optical axis or in a second direction perpendicular to the optical axis.

2 . The camera actuator of claim 1 , wherein the mover includes a holder on which the optical member is seated, and
wherein the holder includes a first holder outer surface, a second holder outer surface facing the first holder outer surface, and a third holder outer surface disposed on a lower portion of the holder between the first holder outer surface and the second holder outer surface.

3 . The camera actuator of claim 2 , wherein the at least one magnet includes:
a first magnet disposed on the first holder outer surface; and a second magnet disposed on the second holder outer surface, and wherein the first magnet and the second magnet overlap in the second direction.

4 . The camera actuator of claim 3 , wherein the tilting guide part includes a base, a first protrusion protruding from a first surface of the base, and a second protrusion protruding from a second surface of the base, and
wherein the first protrusion is disposed between the mover and the base.

5 . The camera actuator of claim 4 , wherein the first protrusion overlaps the first magnet and the second magnet in the second direction.

6 . The camera actuator of claim 4 , wherein at least a portion of the base overlaps the first magnet and the second magnet in the second direction.

7 . The camera actuator of claim 4 , wherein the at least one magnet includes a third magnet disposed on the third holder outer surface, and
wherein at least a portion of the third magnet overlaps the first protrusion in the first direction.

8 . The camera actuator of claim 1 , wherein the mover includes a holder coupled to the optical member and a fastening member coupled to the holder,
wherein the fastening member passes through one side portion of the housing and includes a first groove disposed in an inner surface thereof, and wherein the housing includes a second groove disposed in an outer surface of the one side portion of the housing.

9 . The camera actuator of claim 8 , further-comprising:
a first magnetic substance disposed in the first groove; and a second magnetic substance disposed in the second groove.

10 . The camera actuator of claim 9 , wherein the tilting guide part is in close contact with the one side portion of the housing and the holder by a repulsive force between the first magnetic substance and the second magnetic substance.

11 . A camera actuator comprising:
a mover including a reflective member; a tilting guide part configured to guide tilting of the mover; and a driving part configured to drive the mover, wherein the driving part includes at least one magnet and at least one coil, and at least a portion of the driving part overlaps the tilting guide part in a direction perpendicular to an optical axis.

12 . The camera actuator of claim 11 , wherein the mover includes a holder on which the reflective member is seated, and
wherein the holder includes a first holder outer surface, a second holder outer surface facing the first holder outer surface, and a third holder outer surface disposed on a lower portion of the holder between the first holder outer surface and the second holder outer surface.

13 . The camera actuator of claim 12 , wherein the at least one magnet includes a first magnet disposed adjacent to the first holder outer surface and a second magnet disposed on the second holder outer surface,
wherein the at least one coil includes a first coil corresponding to the first magnet and a second coil corresponding to the second magnet, wherein the first magnet and the second magnet overlap in a second direction, and wherein the first coil and the second coil overlap in the second direction.

14 . The camera actuator of claim 13 , wherein the tilting guide part includes a base, a first protrusion protruding from a first surface of the base, and a second protrusion protruding from a second surface of the base, and
wherein the first protrusion is disposed between the mover and the base.

15 . The camera actuator of claim 14 , wherein the first protrusion overlaps the first magnet, the second magnet, the first coil, and the second coil in the second direction.

16 . The camera actuator of claim 14 , wherein at least a portion of the base overlaps the first magnet, the second magnet, the first coil, and the second coil in the second direction.

17 . The camera actuator of claim 14 , wherein the at least one magnet includes a third magnet disposed adjacent to the third holder outer surface, and
wherein at least a portion of the third magnet overlaps the first protrusion in the direction perpendicular to the optical axis.

18 . The camera actuator of claim 17 , wherein the at least one coil includes a third coil corresponding to the third magnet, and
wherein at least a portion of the third coil overlaps the first protrusion in a first direction.

19 . A camera actuator comprising:
a mover including a reflective member; a tilting guide part configured to guide tilting of the mover; and a magnet or a coil disposed on the mover, wherein the mover includes a first sidewall on which the magnet or the coil is disposed and a second sidewall disposed perpendicular to the first sidewall and including a cavity in which the tilting guide part is disposed, and wherein at least a portion of the cavity overlaps at least a portion of the magnet or the coil in a direction perpendicular to an optical axis.

20 . The camera actuator of claim 19 , wherein at least a portion of the tilting guide part is in contact with the at least a portion of the cavity.

Assignees

• Lg Innotek Co Ltd

Inventors

• Lee Hyun Joong
• You Jeong Gi
• Lee Seong Min

Classifications

• G03B2205/0023

  by tilting or inclining one or more optical elements with respect to the optical axis · CPC title

• G03B5/00

  Adjustment of optical system relative to image or object surface other than for focusing · CPC title

• G03B2205/0069

  using electromagnetic actuators, e.g. voice coils · CPC title

• G03B17/17

  with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera · CPC title

• G03B30/00

  Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles · CPC title