Driving apparatus for camera lens assembly

• US 9,046,737 B2
• Filed: 12/18/2012
• Issued: 06/02/2015
• Est. Priority Date: 12/21/2011
• Status: Active Grant

• Current Assignee: Jahwa Electronics Company Limited
• Original Assignee: Jahwa Electronics Company Limited
• Inventors: Seol, Jin-Soo, Jang, Jun-Suk, Lee, Jong-Pil
• Primary Examiner(s): CHOI, WILLIAM C
• Application Number:
  US14/368,096
• Publication Number:
  US 20140368937A1
• Time in Patent Office: 896 Days
• Field of Search: 359/824, 396/133, 348/374
• US Class Current: 1/1
• CPC Class Codes: G02B 7/04 with mechanism for focusing or varying magnification
• CPC Class Codes: G02B 7/08 adapted to co-operate with a remote control mechanism
• CPC Class Codes: G03B 2205/0069 using electromagnetic actuators, e.g. voice coils
• CPC Class Codes: G03B 3/10 Power-operated focusing

Abstract

Provided is a driving apparatus for a camera lens assembly, the driving apparatus including a lens assembly portion which includes a magnetic object and a support member, a driving base portion which includes a coil portion for generating a driving force to correspond to the magnetic object, and a position sensor portion positioned in the driving base portion eccentrically to a side from a center of the magnetic object.

Claims

1. A driving apparatus for a camera lens assembly, the driving apparatus comprising:

a lens assembly portion comprising a magnetic object and a support member;

a driving base portion comprising a coil portion for generating a driving force to correspond to the magnetic object; and

a position sensor portion positioned in the driving base portion eccentrically to a side from a center of the magnetic object.

2. The driving apparatus of claim 1, wherein the coil portion is provided eccentrically to a side from the center of the magnetic object.

3. A driving apparatus for a camera lens assembly, the driving apparatus comprising:

a lens assembly portion comprising a magnetic object and a support member;

a driving base portion comprising a coil portion for generating a driving force to correspond to the magnetic object and a guide portion for guiding driving of the lens assembly portion; and

a position sensor portion positioned between the guide portion and the coil portion to be provided in the driving base portion eccentrically from a center of the magnetic object.

4. The driving apparatus of claim 3, wherein the position sensor portion is positioned in adjacent to one of a first guide member and a second guide member which are included in the guide portion.

5. The driving apparatus of claim 4, wherein the coil portion is positioned in adjacent to one of a first guide member and a second guide member which are included in the guide portion.

6. The driving apparatus of claim 5, wherein the first guide member and the second guide member comprise a “

V”

groove or a “

U”

groove.

7. The driving apparatus of claim 6, wherein the position sensor portion is disposed in adjacent to the “

V”

groove.

8. The driving apparatus of claim 6, wherein the first guide member comprises a groove formed of at least two surfaces with different inner circumferential surfaces, which are adjacent to one another, and the second guide member comprises a groove whose inner circumferential surface has a curved or right-angle surface.

9. The driving apparatus of claim 6, wherein the first guide member comprises a “

V”

groove and the second guide member comprises a “

U”

groove.

10. The driving apparatus of claim 3, wherein the driving base portion comprises a pair of stopper portions for restricting a driving section of the lens assembly portion.

11. The driving apparatus of claim 3, wherein the center of the coil portion is provided in the same direction as the center of the magnetic object, and has a predetermined distance from the center of the magnetic object to be eccentric from the center of the magnetic object.

12. A driving apparatus for a camera lens assembly, the driving apparatus comprising:

a lens assembly portion comprising a magnetic object and a support member;

a driving base portion comprising a coil portion for generating a driving force to correspond to the magnetic object and a guide portion for guiding driving of the lens assembly portion;

a position sensor portion positioned between the guide portion and the coil portion to be provided in the driving base portion eccentrically from a center of the magnetic object; and

a first stopper portion and a second stopper portion provided in the driving base portion and positioned in adjacent to the position sensor portion or the coil portion to restrict driving of the lens assembly portion.

13. The driving apparatus of claim 12, wherein the second stopper portion is formed to protrude higher than the first stopper portion.

14. The driving apparatus of claim 12, wherein the second stopper portion is formed to protrude to the same height as the first stopper portion.

15. A driving apparatus for a camera lens assembly, the driving apparatus comprising:

a lens assembly portion comprising a magnetic object and a support member;

a driving base portion comprising a coil portion for generating a driving force to correspond to the magnetic object and a guide portion for guiding driving of the lens assembly portion;

a position sensor portion positioned between the guide portion and the coil portion to be provided in the driving base portion eccentrically from a center of the magnetic object; and

at least one stopper portions provided in the driving base portion and positioned in adjacent to the coil portion to restrict driving of the lens assembly portion.