CAMERA SYSTEM

• US 20160330378A1
• Filed: 07/18/2016
• Published: 11/10/2016
• Est. Priority Date: 01/30/2014
• Status: Active Grant

• Current Assignee: OM Digital Solutions Corporation
• Original Assignee: Olympus Corporation
• Inventors: TSUCHIYA, Hitoshi
• Granted Patent: US 9,838,605 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G03B 17/14 interchangeably
• CPC Class Codes: G03B 2205/0007 Movement of one or more optical elements for control of motion blur
• CPC Class Codes: G03B 5/00 Adjustment of optical system relative to image or object surface other than for focusing
• CPC Class Codes: H04N 23/60 Control of cameras or camera modules
• CPC Class Codes: H04N 23/663 for controlling interchangeable camera parts based on electronic image sensor signals
• CPC Class Codes: H04N 23/6812 based on additional sensors, e.g. acceleration sensors
• CPC Class Codes: H04N 23/687 by shifting the lens or sensor position

Abstract

In a camera system that includes a lens unit and a camera body, the camera body includes a blur correcting unit that performs blur correction in a plurality of directions, and a determining unit that determines whether the lens unit mounted onto the camera body is a lens unit that performs the blur correction in the plurality of directions. When the determining unit determines that the mounted lens unit is the lens unit that performs the blur correction in the plurality of directions, the camera body performs the blur correction in the plurality of directions at a camera body side blur correction ratio, and the lens unit performs the blur correction in the plurality of directions at a lens unit side blur correction ratio.

Claims

1. A camera system that includes a lens unit and a camera body that the lens unit is freely attached to or detached from, wherein

the camera body includes:

a blur correcting unit that performs blur correction in a plurality of directions; and

a determining unit that determines whether the lens unit mounted onto the camera body is a lens unit that performs the blur correction in the plurality of directions,

when the determining unit determines that the lens unit mounted onto the camera body is the lens unit that performs the blur correction in the plurality of directions, the camera body drives the blur correcting unit so as to perform the blur correction in the plurality of directions at a camera body side blur correction ratio based on information relating to a blur correction range that the lens unit has, a correction sensitivity, and the blur correction range included in the camera body, and the lens unit performs the blur correction at a lens unit side blur correction ratio based on the information relating to the blur correction range that the lens unit has, the correction sensitivity, and the blur correction range included in the camera body, and

when L_b represents the blur correction range included in the camera body, L_l represents the blur correction range that the lens unit has, and K represents the correction sensitivity, the camera body side blur correction ratio is a value obtained by performing an operation of L_b/(L_b+L_l×

K), and the lens unit side blur correction ratio is a value obtained by performing an operation of L_l×

K/(L_b+L_l×

K).

2. The camera system according to claim 1, wherein

the camera body further includes a first correction ratio calculating unit that calculates the camera body side blur correction ratio, and

the lens unit further includes a second correction ratio calculating unit that calculates the lens unit side blur correction ratio.

3. The camera system according to claim 1, wherein

the camera body further includes a correction ratio calculating unit on a camera body side that calculates the camera body side blur correction ratio and the lens unit side blur correction ratio, and

the camera body transmits, to the lens unit, the lens unit side blur correction ratio calculated by the correction ratio calculating unit on the camera body side.

4. The camera system according to claim 1, wherein

the lens unit further includes a correction ratio calculating unit on a lens unit side that calculates the camera body side blur correction ratio and the lens unit side blur correction ratio, and

the lens unit transmits, to the camera body, the camera body side blur correction ratio calculated by the correction ratio calculating unit on the lens unit side.

5. The camera system according to claim 1, wherein

the plurality of directions are two directions, a yaw direction and a pitch direction that are respectively rotation directions having axes in directions perpendicular to optical axis directions of the lens unit and the camera body.