Reflecting module for optical image stabilization and camera module including the same

Patent metadata

Field	Value
Publication number	US-11036061-B2
Application number	US-201916509961-A
Country	US
Kind code	B2
Filing date	Jul 12, 2019
Priority date	Jun 12, 2017
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

There are provided a reflecting module for optical image stabilization (OIS) and a camera module including the same. The reflecting module for OIS includes: a housing; a rotation holder supported by a sidewall of the housing through a rotation frame; a reflecting member provided on the rotation holder; a driving part providing driving force to the rotation holder so that the rotation holder is moved relative to the housing; and a pulling yoke provided in the housing so that the rotation holder is supported by the sidewall of the housing by attractive force between the pulling yoke and a magnet of the driving part provided on a lower surface of the rotation holder.

First claim

What is claimed is:

1. A camera module, comprising:
a lens module comprising lenses; and
a reflecting module configured to change a path of incident light so that the light is directed toward the lens module, the reflecting module comprising:
a housing;
a rotation holder supported by a sidewall of the housing through a rotation frame;
a reflecting member disposed on the rotation holder;
a driving part configured to provide driving force to the rotation holder such that the rotation holder is moved relative to the housing; and
a pulling yoke disposed in the housing so that the rotation holder is supported by the sidewall of the housing by attractive force between the pulling yoke and a magnet, the pulling yoke facing the magnet in a direction perpendicular to a reflecting surface of the reflecting member.

2. The camera module of claim 1 , wherein the rotation frame is rotatable around one axis parallel to the reflecting surface of the reflecting member with respect to the housing, and
the rotation holder is rotatable around an other axis parallel to the reflecting surface of the reflecting member and approximately perpendicular to the one axis with respect to the rotation frame.

3. The camera module of claim 2 , wherein the rotation frame is moved together with the rotation holder when the rotation frame is rotated around the one axis, and
the rotation holder is rotated relative to the rotation frame when the rotation holder is rotated around the other axis.

4. The camera module of claim 2 , wherein the rotation frame surrounds an edge of the rotation holder, and
the rotation holder is partially disposed on an edge of the rotation frame and is rotatable within the rotation frame.

5. The camera module of claim 2 , wherein a set of ball bearings aligned in the one axis direction is disposed between an edge of the rotation frame and the sidewall of the housing.

6. The camera module of claim 5 , wherein seating grooves into which the ball bearings are inserted are disposed between the edge of the rotation frame and the sidewall of the housing.

7. The camera module of claim 5 , wherein the ball bearings are integral ball bearings provided integral with either one of the rotation frame, in the edge of the rotation frame, and the housing, in the sidewall of the housing, and
seating grooves into which the integral ball bearings are disposed are provided in the edge of one of the rotation frame and the sidewall of the housing in which the ball bearings are not provided.

8. The camera module of claim 7 , wherein the integral ball bearings comprise any one of a spherical shape, a hemispherical shape, a semi-cylindrical shape, and a rounded protrusion shape.

9. The camera module of claim 8 , wherein the seating grooves provided in the edge of the rotation frame or the sidewall of the housing have a round shape or a poly-pyramidal shape.

10. The camera module of claim 2 , wherein a set of ball bearings aligned in the other axis direction is disposed between the rotation holder and an edge of the rotation frame.

11. The camera module of claim 10 , wherein seating grooves into which the ball bearings are inserted are disposed between the rotation holder and the edge of the rotation frame.

12. The camera module of claim 10 , wherein the ball bearings are integral ball bearings provided integral with either one of the rotation holder, in an edge of the rotation holder, and the rotation frame, in an edge of the rotation frame, and
seating grooves into which the integral ball bearings are inserted are provided in one of the edge of the rotation holder and the rotation frame in which the ball bearings are not provided.

13. The camera module of claim 12 , wherein the integral ball bearings comprise any one of a spherical shape, a hemispherical shape, a semi-cylindrical shape, and a rounded protrusion shape.

14. The camera module of claim 13 , wherein the seating grooves provided in the edge of the rotation holder or the rotation frame have a round shape or a poly-pyramidal shape.

15. The camera module of claim 1 , wherein an optical axis of the lenses is generally perpendicular to a direction of the incident light to the camera module.

16. A portable electronic device comprising:
a camera module comprising a lens module and a reflecting module configured to change a path of incident light so that the light is directed toward the lens module, the reflecting module comprising:
a housing;
a rotation holder supported by a sidewall of the housing through a rotation frame;
a reflecting member disposed on the rotation holder;
a driving part configured to provide driving force to the rotation holder such that the rotation holder is moved relative to the housing; and
a pulling yoke disposed in the housing so that the rotation holder is supported by the sidewall of the housing by attractive force between the pulling yoke and a magnet disposed on a lower surface of the rotation holder, the pulling yoke facing the magnet in a direction perpendicular to a reflecting surface of the reflecting member.

17. A reflecting module configured to change a path of incident light so that the light is directed toward an optical axis of a lens module comprising lenses, the reflecting module comprising:
a housing;
a rotation holder supported by a sidewall of the housing through a rotation frame;
a reflecting member disposed on the rotation holder;
a driving part configured to provide driving force to the rotation holder such that the rotation holder is moved relative to the housing; and
a first magnet member disposed in the housing so that the rotation holder is supported by the sidewall of the housing by attractive force between the first magnet member and a second magnet member, the first magnet member facing the second magnet member in a direction perpendicular to a reflecting surface of the reflecting member.

18. The reflecting module of claim 17 , wherein the rotation frame is rotatable around one axis parallel to the reflecting surface of the reflecting member with respect to the housing, and
the rotation holder is rotatable around an other axis parallel to the reflecting surface of the reflecting member and approximately perpendicular to the one axis with respect to the rotation frame.

19. The reflecting module of claim 18 , wherein the rotation frame is moved together with the rotation holder when the rotation frame is rotated around the one axis, and
the rotation holder is rotated relative to the rotation frame when the rotation holder is rotated around the other axis.

20. The camera module of claim 18 , wherein the rotation frame surrounds an edge of the rotation holder, and
the rotation holder is partially disposed on an edge of the rotation frame and is rotatable within the rotation frame.

Assignees

• Samsung Electro Mech

Inventors

• Jeong Bong Won
• Yoon Young Bok
• Seo Sang Ho
• Lee Ta Kyoung
• Im Ah Hyeon
• Kim Jae Kyung

Classifications

• H04N23/685 Primary

  performed by mechanical compensation · CPC title

• H04N23/687

  by shifting the lens or sensor position · CPC title

• H04N23/57

  Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices · CPC title

• H04N23/54

  Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils · CPC title

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title