Camera lens module

• US 9,549,109 B2
• Filed: 01/29/2015
• Issued: 01/17/2017
• Est. Priority Date: 03/07/2014
• Status: Active Grant

• Current Assignee: Jahwa Electronics Company Limited
• Original Assignee: Jahwa Electronics Company Limited
• Inventors: Noh, Yo Han, Kim, Hee Seung, Kim, In Soo
• Primary Examiner(s): Prabhakher, Pritham
• Application Number:
  US14/609,039
• Publication Number:
  US 20150256727A1
• Time in Patent Office: 719 Days
• Field of Search: 348/208.12
• US Class Current: 1/1
• CPC Class Codes: G02B 27/646 compensating for small deviations, e.g. due to vibration or shake movement of one or more optical elements for control of motion blur in cameras, projectors or printers G03B2205/0007; image stabilisation in cameras peculiar to the presence or use of an electronic image sensor H04N23/68
• CPC Class Codes: G02B 5/208 for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
• CPC Class Codes: G02B 7/006 Filter holders
• CPC Class Codes: G02B 7/08 adapted to co-operate with a remote control mechanism
• CPC Class Codes: G02B 7/09 adapted for automatic focusing or varying magnification
• CPC Class Codes: G03B 13/36 Autofocus systems
• CPC Class Codes: G03B 2205/0007 Movement of one or more optical elements for control of motion blur imaging systems in general using optical elements for stabilisation of the position of the image G02B27/64
• CPC Class Codes: G03B 2205/0015 by displacing one or more optical elements normal to the optical axis
• CPC Class Codes: G03B 2205/0053 Driving means for the movement of one or more optical element
• CPC Class Codes: G03B 2205/0069 using electromagnetic actuators, e.g. voice coils
• CPC Class Codes: G03B 3/10 Power-operated focusing
• CPC Class Codes: G03B 5/00 Adjustment of optical system relative to image or object surface other than for focusing
• CPC Class Codes: G03B 5/04 Vertical adjustment of lens; Rising fronts
• CPC Class Codes: H04N 23/54 Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 23/57 Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
• CPC Class Codes: H04N 23/67 Focus control based on electronic image sensor signals
• CPC Class Codes: H04N 23/682 Vibration or motion blur correction
• CPC Class Codes: H04N 23/685 performed by mechanical compensation

Abstract

A camera lens module according to an embodiment of the present invention is configured to include an optical image stabilizing carrier for accommodating a lens barrel; an autofocus carrier for mounting the optical image stabilizing carrier; a rolling unit for supporting a plane motion orthogonal to the optical axis of the optical image stabilizing carrier with respect to the autofocus carrier; a base for accommodating the autofocus carrier which mounts the optical image stabilizing carrier to advance and retreat the autofocus carrier in an optical axis direction; an optical image stabilizer driving unit; and an autofocus driving unit.

Claims

1. A camera lens module comprising:

an autofocus driving unit arranged at a corner of the camera lens module;

optical image stabilizer driving units arranged to be perpendicular to each other at another corner of the camera lens module opposite to the corner where the autofocus driving unit is arranged;

an optical image stabilizing carrier for being driven by the optical image stabilizer driving units, the optical image stabilizing carrier accommodating a lens barrel;

an autofocus carrier for being driven by the autofocus driving unit to advance and retract the optical image stabilizing carrier in an optical axis direction, the optical image stabilizing carrier being mounted on the autofocus carrier and being slidably movable on the autofocus carrier; and

a base for accommodating the autofocus carrier on which the optical image stabilizing carrier is mounted,

wherein when the autofocus driving unit is actuated to move the autofocus carrier in an optical axis direction, the optical image stabilizing carrier mounted on the autofocus carrier is moved together with the autofocus carrier in the optical axis direction.

2. The camera lens module according to claim 1, wherein the optical image stabilizer driving units include:

a first optical image stabilizer driving unit arranged on an adjacent lateral side of the surface or the corner opposite to the corner where the autofocus driving unit is placed; and

a second optical image stabilizer driving unit perpendicular to the first optical image stabilizer driving unit.

3. The camera lens module according to claim 2, wherein the first optical image stabilizer driving unit includes:

a first coil installed on a first side surface of the base;

a first magnet installed on a mounting surface of the optical image stabilizing carrier facing the first side surface; and

first and second yokes corresponding to the first magnet in a left and right pair.

4. The camera lens module according to claim 3, further comprising a first position detecting sensor for detecting change of position of the first magnet with respect to the first coil.

5. The camera lens module according to claim 3, wherein the first and second yokes are installed at one side of the autofocus carrier to configure an arrangement of a form one-to-one corresponding to each of areas divided by an optical axis direction central axis line of the first magnet.

6. The camera lens module according to claim 2, wherein the second optical image stabilizer driving unit includes:

a second coil installed on a second side surface of the base;

a second magnet installed on a mounting surface of the optical image stabilizing carrier facing the second side surface; and

third and fourth yokes corresponding to the second magnet in a left and right pair.

7. The camera lens module according to claim 6, further comprising a second position detecting sensor for detecting change of position of the second magnet with respect to the second coil.

8. The camera lens module according to claim 6, wherein the third and fourth yokes are installed at the other side of the autofocus carrier to configure an arrangement of a form one-to-one corresponding to each of areas divided by an optical axis direction central axis line of the second magnet.

9. The camera lens module according to claim 1, wherein the autofocus driving unit includes:

an autofocus coil installed at a corner of the base of the camera lens module;

a driver arranged on an adjacent lateral side of the autofocus coil; and

an autofocus magnet installed on an outer surface of the autofocus carrier facing the autofocus coil.

10. The camera lens module according to claim 1, wherein the autofocus driving unit includes:

an autofocus coil installed at a corner of the base of the camera lens module;

an autofocus control sensor mounted on a substrate installed with the autofocus coil; and

an autofocus magnet installed on an outer surface of the autofocus carrier facing the autofocus coil.

11. The camera lens module according to claim 1, further comprising a rolling unit for supporting a plane motion orthogonal to an optical axis of the optical image stabilizing carrier with respect to the autofocus carrier.

12. The camera lens module according to claim 11, wherein the rolling unit includes:

two or more supporting pieces respectively provided at a corner of the autofocus carrier in one piece and having a concave accommodating surface formed on a top surface;

two or more seating pieces formed on a circumference of the optical image stabilizing carrier in a projected form to be correspondent to the supporting pieces and respectively having a concave accommodating surface formed on a bottom surface; and

two or more balls interposed in a form in which a portion and the other portion are respectively accommodated on the accommodating surfaces of the supporting piece and the seating piece.

13. The camera lens module according to claim 12, wherein the supporting piece and the seating piece are arranged in a form vertically stacked with respect to the optical axis direction to form a shake suppressing piece, and two or more concave surface units of a form capable of inserting the shake suppressing piece are provided along the optical axis direction inside a corner of the base.

14. The camera lens module according to claim 1, wherein the base includes:

a bottom unit having an opening at a center portion and wrapping a lower surface of the autofocus carrier; and

side surface units of a rectangular shape, for wrapping the autofocus carrier and the optical image stabilizing carrier mounted thereon.

15. The camera lens module according to claim 14, wherein an installation unit for installing a portion of a configuration of the autofocus driving unit is formed at a corner of the base, and a pair of guide members configuring an optical axis guide device are provided on the side surface units perpendicular to each other with intervention of the corner where the installation unit is formed.

16. The camera lens module according to claim 1, further comprising a stopper assembled in the base to limit optical axis direction movement of the optical image stabilizing carrier accommodating the lens barrel.

17. The camera lens module according to claim 1, further comprising an image sensor module mounted on a bottom of the base, wherein the image sensor module includes:

an infrared filter arranged at a center of an opening of the bottom unit of the base;

a filter base on which the infrared filter is installed; and

a substrate installed with an image sensor and arranged under the infrared filter.