Camera module and stop module

• US 10,690,997 B2
• Filed: 01/31/2018
• Issued: 06/23/2020
• Est. Priority Date: 03/31/2017
• Status: Active Grant

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: Park, Chuel Jin, Kim, Dae Sik, Ji, Sang Hyun
• Primary Examiner(s): Vu, Ngoc Yen T
• Application Number:
  US15/884,606
• Publication Number:
  US 20180284571A1
• Time in Patent Office: 874 Days
• CPC Class Codes: G03B 2205/0069 using electromagnetic actuators, e.g. voice coils
• CPC Class Codes: G03B 9/02 Diaphragms
• CPC Class Codes: G03B 9/14 Two separate members moving in opposite directions
• CPC Class Codes: H02K 33/16 with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
• CPC Class Codes: H04N 23/51 Housings
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 23/75 by influencing optical camera components

Abstract

A camera module includes a housing to accommodate a lens module, a stop module coupled to the lens module and configured to selectively change an amount of light incident to the lens module, and a coil portion configured to drive the stop module to selectively change an amount of light incident to the lens module. The coil portion is disposed on the housing.

Claims

1. A camera module, comprising:

a housing configured to accommodate a lens module therein;

a stop module coupled to the lens module and configured to selectively change an amount of light incident to the lens module; and

a first coil portion comprising a coil and disposed on the housing and configured to drive the stop module to selectively change the amount of light incident to the lens module, and

a magnet portion comprising a magnet to face the first coil and disposed on the stop module,

wherein the magnet portion is configured to move linearly relative to the coil in one axis direction perpendicular to the optical axis direction.

2. The camera module of claim 1, wherein the stop module comprises:

incident holes having different sizes from each other, and at least one of the incident holes is rotatably provided.

3. The camera module of claim 1, wherein the stop module comprises:

a first stop comprising a first incident hole; and

a second stop disposed to be rotatable with respect to the first stop and comprising a second incident hole,

wherein a diameter of the first incident hole and a diameter of the second incident hole are different from each other.

4. The camera module of claim 1, wherein the stop module comprises:

a plate;

the magnet portion movably disposed on the plate; and

a stop disposed on the plate and configured to be rotatable with respect to the plate.

5. The camera module of claim 4, wherein the stop is coupled to the magnet portion and rotated as a result of movement of the magnet portion.

6. The camera module of claim 4, wherein the magnet portion comprises a first protrusion portion extending through the stop.

7. The camera module of claim 6, wherein the stop module comprises an additional stop coupled to the plate,

a first stop comprises:

a guide hole through which the first protrusion portion passes, and the guide hole is elongated in a movement direction of the magnet portion.

8. The camera module of claim 4, wherein the plate comprises a second protrusion portion, and the stop is rotatable around the second protrusion portion.

9. The camera module of claim 4, wherein the magnet portion comprises:

a magnet disposed to face the first coil portion; and

a magnet housing,

wherein the magnet is coupled to the magnet housing.

10. The camera module of claim 1, wherein the lens module comprises:

an optical axis and is movable with the stop module in an optical axis direction.

11. The camera module of claim 10, further comprising:

a focusing portion comprising a magnet disposed on a surface of the lens module and a second coil portion disposed on the housing to face the magnet.

12. A camera module, comprising:

a housing configured to accommodate a lens module therein;

a stop module coupled to the lens module to be movable with the lens module in an optical axis direction; and

a stop driving portion comprising;

a magnet portion movably disposed on the stop module, and

a first coil portion fixedly disposed on the housing to face the magnet portion,

wherein the stop module comprises incident holes comprising different sizes, and at least one of the incident holes is rotatably disposed.

13. The camera module of claim 12, further comprising:

a focusing portion comprising;

a magnet disposed on a surface of the lens module; and

a second coil portion disposed on the housing to face the magnet,

wherein the stop driving portion and the focusing portion are positioned opposite each other in relation to the lens module.

14. A camera module, comprising:

a housing;

a stop module;

the stop module comprising;

a plate comprising a through opening to pass light therethrough;

a magnetic portion movably disposed on the plate;

a first stop comprising a first incident hole and coupled to the plate; and

a second stop comprising a second incident hole, the second stop disposed on the plate and configured to be rotatable with respect to the first stop to selectively change an amount of incident light passing therethrough, wherein the second stop is coupled to the magnetic portion,

a coil portion spaced apart from the magnetic portion, the coil portion configured to move the magnetic portion relative to the plate to selectively change the amount of light passing through the through opening,

wherein the coil portion is disposed on the housing, and

wherein the stop module is configured to move in the housing in an optical axis direction independently from the coil portion.

15. The camera module of claim 14, wherein the plate is movable relative to the coil portion.

16. The camera module of claim 14, further comprising:

a printed circuit board connected to the coil portion, wherein the plate is movable relative to the coil portion and the printed circuit board.

17. The stop module of claim 14, wherein the second stop is coupled to the magnet portion and rotated as a result of movement of the magnet portion.

18. The stop module of claim 14, wherein the magnet portion comprises:

a first protrusion portion extending through the first stop and the second stop,

wherein the first stop comprises a guide hole through which the first protrusion portion passes, and the guide hole is elongated in a movement direction of the magnet portion, and

wherein the plate comprises a second protrusion portion, and the second stop is rotatable around the second protrusion portion.