IP Library › Granted Patent US 8,406,617
Granted Patent B2
US 8,406,617 · App. 13/257,402 · Granted Mar 26, 2013

Photographic optical device

Inventors: Katsushige Yanagisawa (Nagano, JP); Akihiro Nagata (Nagano, JP); Tadashi Takeda (Nagano, JP); Shinji Minamisawa (Nagano, JP); Yuichi Takei (Nagano, JP); Hisahiro Ishihara (Nagano, JP); Toshiyuki Karasawa (Nagano, JP); Kiyoshi Miyazaki (Nagano, JP)
Assignee: Nidec Sankyo Corporation
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 8,406,617
App. No.
13/257,402
Granted
Mar 26, 2013
Kind
B2
Abstract

A photographic optical device may include a movable module having a camera module on which a lens and an imaging element are mounted, a support body, and a shake correction mechanism. The movable module may be provided with a sensor for detecting an inclination of the camera module and a cover member which structures an outer peripheral face of the movable module. The shake correction mechanism may be provided with a swing drive mechanism for swinging the movable module so that the optical axis is inclined. The swing drive mechanism may be provided with a drive magnet and a drive coil.

Claims (60)

1. A photographic optical device comprising:

a movable module having a camera module on which a lens and an imaging element are mounted;

a support body which supports the movable module; and

a shake correction mechanism for correcting a shake of hand by swinging the movable module so that an optical axis of the camera module is inclined with respect to the support body;

wherein the movable module is provided with a sensor for detecting an inclination of the camera module and a cover member which structures an outer peripheral face of the movable module;

wherein the cover member is provided with a side face part substantially parallel to the optical axis;

wherein the shake correction mechanism is provided with a swing drive mechanism for swinging the movable module so that the optical axis is inclined,

wherein the swing drive mechanism is provided with a drive magnet and a drive coil which is oppositely disposed to the drive magnet,

wherein the sensor is disposed on an inner side of the side face part; and

wherein the drive magnet or the drive coil is attached to an outer side face of the side face part.

2. The photographic optical device according to claim 1 , wherein

the cover member is formed in a substantially rectangular tube shape having two side face parts which are parallel to a first direction substantially perpendicular to an optical axis direction of the camera module and two side face parts which are parallel to a second direction substantially perpendicular to the optical axis direction and the first direction, and

the sensor is disposed on the inner side of the side face part so as to be capable of detecting an inclination of the camera module whose swing axis is the first direction and an inclination of the camera module whose swing axis is the second direction.

3. The photographic optical device according to claim 2 , further comprising a case body which surrounds four sides of the cover member,

wherein the drive coil is attached to an inner side face of the case body and the drive magnet is attached to the outer side face of the side face part.

4. The photographic optical device according to claim 3 , wherein

the sensor is a one-axis gyro-sensor which is capable of detecting an inclination whose swing axis is directed in one direction, and

the sensor is disposed on respective inner sides two of the side face parts so as to be capable of detecting an inclination of the camera module whose swing axis is directed in the first direction and an inclination of the camera module whose swing axis is directed in the second direction.

5. The photographic optical device according to claim 3 , wherein

the sensor is a two-axes gyro-sensor which is capable of detecting inclinations whose swing axes are directed in two directions perpendicular to each other, and

the sensor is disposed on an inner side of one of the side face parts so as to be capable of detecting an inclination of the camera module whose swing axis is directed in the first direction and an inclination of the camera module whose swing axis is directed in the second direction.

6. The photographic optical device according to claim 3 , wherein

the sensor is a three-axes gyro-sensor which is capable of detecting inclinations whose swing axes are directed in three directions perpendicular to each other, and

the sensor is disposed on an inner side of one of the side face parts so as to be capable of detecting an inclination of the camera module whose swing axis is directed in the first direction and an inclination of the camera module whose swing axis is directed in the second direction.

7. The photographic optical device according to claim 1 , further comprising a circuit board on which the sensor is mounted,

wherein the sensor is disposed between an inner side face of the side face part and an outer peripheral face of the camera module, and

wherein the circuit board is disposed along the inner side face of the side face part.

8. The photographic optical device according to claim 7 , wherein

the shake correction mechanism is provided with a swing drive mechanism for swinging the movable module so that the optical axis is inclined and a drive circuit for driving the swing drive mechanism,

the cover member is formed of electrically conductive material, and

the drive circuit is disposed between the inner side face of the side face part and the outer peripheral face of the camera module.

9. The photographic optical device according to claim 8 , further comprising an opening part which is formed on one end side of the cover member in an optical axis direction of the camera module for inserting the camera module into an inside of the cover member,

wherein the movable module is provided with a second cover member which is formed of electrically conductive material and covers the opening part.

10. The photographic optical device according to claim 9 , wherein the drive circuit is electrically connected with the cover member and/or the second cover member which are to be grounded.

11. The photographic optical device according to claim 1 , wherein

the shake correction mechanism is provided with a supporting point part which functions as a swing center of the movable module,

the supporting point part is disposed on an opposite-to-object side of the movable module,

the cover member is formed in a substantially rectangular tube-like shape having a bottom part on an object to be photographed side, and

a chamfering part or a stepped part recessed toward an inner side of the cover member is formed at a boundary portion between the side face part of the cover member on which the sensor is disposed and the bottom part.

12. The photographic optical device according to claim 11 , wherein

the shake correction mechanism is provided with the swing drive mechanism for swinging the movable module so that the optical axis is inclined and the supporting point part which functions as a swing center of the movable module, and

the supporting point part is disposed between a center of an external shape of the movable module and the optical axis when viewed in the optical axis direction of the camera module.

13. The photographic optical device according to claim 11 , wherein

the shake correction mechanism is provided with the swing drive mechanism for swinging the movable module so that the optical axis is inclined and the supporting point part which functions as a swing center of the movable module; and

the supporting point part is disposed at a position through which the optical axis is passed when viewed in the optical axis direction of the camera module.

14. The photographic optical device according to claim 11 , wherein

the cover member is formed in a substantially rectangular tube shape having two side face parts which are parallel to a first direction substantially perpendicular to an optical axis direction of the camera module and two side face parts which are parallel to a second direction substantially perpendicular to the optical axis direction and the first direction, and

the sensor is disposed on the inner side of the side face part so as to be capable of detecting an inclination of the camera module whose swing axis is the first direction and an inclination of the camera module whose swing axis is the second direction.

15. The photographic optical device according to claim 14 , further comprising a case body which surrounds four sides of the cover member,

wherein the drive coil is attached to an inner side face of the case body and the drive magnet is attached to the outer side face of the side face part.

16. The photographic optical device according to claim 14 , wherein

the sensor is a two-axes gyro-sensor which is capable of detecting inclinations whose swing axes are directed in two directions perpendicular to each other, and

the sensor is disposed on an inner side of one of the side face parts so as to be capable of detecting an inclination of the camera module whose swing axis is directed in the first direction and an inclination of the camera module whose swing axis is directed in the second direction.

17. The photographic optical device according to claim 1 , wherein

the shake correction mechanism is provided with a swing drive mechanism for swinging the movable module so that the optical axis is inclined and a drive circuit for driving the swing drive mechanism,

the cover member is formed of electrically conductive material, and

the drive circuit is disposed between an inner side face of the side face part and an outer peripheral face of the camera module.

18. The photographic optical device according to claim 17 , further comprising an opening part which is formed on one end side of the cover member in an optical axis direction of the camera module for inserting the camera module into an inside of the cover member,

wherein the movable module is provided with a second cover member which is formed of electrically conductive material and covers the opening part.

19. The photographic optical device according to claim 18 , wherein the drive circuit is electrically connected with the cover member and/or the second cover member which are to be grounded.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 19, 2011
From: YANAGISAWA, KATSUSHIGE; NAGATA, AKIHIRO; TAKEDA, TADASHI; MINAMISAWA, SHINJI; TAKEI, YUICHI; ISHIHARA, HISAHIRO; KARASAWA, TOSHIYUKI; MIYAZAKI, KIYOSHI
To: NIDEC SANKYO CORPORATION
Reel/Frame 026927/0182 →
Priority Claims (1)
JP 2009-098746 · Apr 15, 2009 · national
Continuity (1)
Related Publication 20120020654A1 · Jan 26, 2012