IMAGE TREMOR CORRECTION DEVICE AND IMAGING DEVICE HAVING IMAGE TREMOR CORRECTION DEVICE APPLIED

• Main Authors: EZAWA HIROSHI, ISHIKAWA TAKASHI
• Format: Patent
• Language: English; Japanese
• Published: 10.08.2017
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; HOLOGRAPHY; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

PROBLEM TO BE SOLVED: To provide a highly reliable image tremor correction device.SOLUTION: An image tremor correction device comprises: a stationary frame 22; a movable frame 14 that holds an optical lens 14a; a support member 31 that movably supports the movable frame with respect to the stationary frame in an in-plane orthogonal to an optical axis of the optical lens; a drive unit 25 that includes magnets 27x and 27y as well as coils 26x and 26y to drive the movable frame with respect to the stationary frame; control units 50x and 50y that perform drive control of the drive unit; a position detection unit 57 that detects a position of the movable frame in the in-plane; and a judgement unit 59 that when the control unit performs the drive control so as to move the movable frame to a prescribed target position, detects a deviation between the position of the movable frame to be detected by the position detection unit and the prescribed target position and judges whether the image tremor correction device 20 normally operates on the basis of whether the deviation falls within a first allowance range. When it is judged by the judgement unit that the image tremor correction device 20 does not normally operate, the control unit is configured to restrict an operation of the device.SELECTED DRAWING: Figure 6 【課題】信頼性の高い像振れ補正装置を提供する。【解決手段】固定枠２２と、光学レンズ１４ａを保持する可動枠１４と、固定枠に対し可動枠を光学レンズの光軸に直交する平面内で移動自在に支持する支持部材３１と、磁石２７ｘ、２７ｙとコイル２６ｘ、２６ｙを有し固定枠に対し可動枠を駆動する駆動ユニット２５と、駆動ユニットの駆動制御を行う制御部５０ｘ，５０ｙと、平面内での可動枠の位置を検出する位置検出部５７と、制御部が駆動ユニットを介して可動枠を所定の目標位置へと移動するように駆動制御したとき、位置検出部により検出される可動枠の位置と所定の目標位置との偏差を検出し、当該偏差が第１の許容範囲内にあるか否かに基づき装置が正常に動作しているか否かを判定する判定部５９とを具備し、判定部により当該像振れ補正装置２０が正常に動作していないと判定された場合に、制御部は当該装置の動作を制限する。【選択図】図６