To provide a technology that has an advantageous structure in downsizing and power saving, and is also useful when automatic focusing is performed in a closed loop control method.SOLUTION: A lens drive device includes a drive unit for autofocus for moving an autofocus movable unit to an autofocus stationary unit in the optical axis direction. The autofocus stationary unit has a Hall element disposed separately from a magnet unit for autofocus. The autofocus movable unit includes: a first magnet for position detection disposed closely to the Hall element; and a second magnet for position detection that has a configuration similar to the first magnet for position detection and is disposed at a position point-symmetric with respect to the first magnet for position detection in the optical axis direction.SELECTED DRAWING: Figure 11
【課題】小型化、省電力化を図る上で有利な構造を有し、さらにクローズドループ制御方式で自動ピント合わせを行う場合に有用な技術を提供する。【解決手段】レンズ駆動装置は、オートフォーカス固定部に対してオートフォーカス可動部を光軸方向に移動させるオートフォーカス用駆動部を備える。オートフォーカス固定部は、オートフォーカス用マグネット部に対して離間して配置されるホール素子を有し、オートフォーカス可動部は、ホール素子に近接して配置される第1の位置検出用磁石と、第1の位置検出用磁石と同様の構成を有し、第1の位置検出用磁石と光軸方向に関して点対称な位置に配置される第2の位置検出用磁石と、を有する。【選択図】図11
LENS DRIVE DEVICE, CAMERA MODULE, AND CAMERA LOADING DEVICE
レンズ駆動装置、カメラモジュール、及びカメラ搭載装置
2019-12-26
Patent
Electronic Resource
Japanese
IPC: | G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM , Geräte oder Anordnungen zum Aufnehmen, Projizieren oder Betrachten von Fotografien / H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen |
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