OPTICAL IMAGE STABILIZATION APPARATUS AND OPTICAL DEVICE

• Main Author: NAKAYAMA WATARU
• Format: Patent
• Language: English; Japanese
• Published: 27.06.2024
• 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

To provide a compact optical image stabilization apparatus that suppresses position detection errors of a movable unit.SOLUTION: An optical image stabilization apparatus 13 comprises: a base member 210 configured to hold a movable member 200 which holds an image stabilizer L1, movably in an optical axis LC of the image stabilizer; first position detection means 601 and second position detection means 602 configured to detect positions of the movable member relative to the base member in directions of first and second detection central axes α1 and α2; and first driving means 501 and second driving means 502 configured to drive the movable member relative to the base member in directions of first and second driving central axes β1 and β2. An angle formed by the first detection central axis and the second detection central axis is not a right angle. At least one of the directions of the first and second detection central axes is different from each of the directions of the first and second driving central axes. An intersection between the first and second driving central axes is closer to a center of gravity G of the movable unit than an intersection between the first and second detection central axes.SELECTED DRAWING: Figure 3 【課題】可動ユニットの位置検出誤差を抑えつつ小型の光学防振装置を提供する。【解決手段】光学防振装置１３は、防振素子Ｌ１を保持する可動部材２００を防振素子の中心軸ＬＣを移動可能に保持するベース部材２１０と、第１および第２の検出中心軸α１、α２の方向でのベース部材に対する可動部材の位置をそれぞれ検出する第１の位置検出手段６０１および第２の位置検出手段６０２と、第１および第２の駆動中心軸β１、β２の方向にベース部材に対して可動部材をそれぞれ駆動する第１の駆動手段５０１および第２の駆動手段５０２とを有する。第１の検出中心軸と第２の検出中心軸とがなす角度が直角ではない。第１および第２の検出中心軸の方向のうち少なくとも一方が第１および第２の駆動中心軸の方向のいずれとも異なっている。第１および第２の駆動中心軸の交点が、第１および第２の検出中心軸の交点よりも、可動ユニットの重心Ｇに近い。【選択図】図３