FOCUSING LENS DRIVE UNIT

PROBLEM TO BE SOLVED: To provide a focusing lens drive unit that offers suppressed operational noise generated while adjusting focus, no control disorder due to motor step-out, enhanced control performance, reduced heat generation during continuous use, better response in focusing operation and impr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KANEMURA TAKATOSHI, YOSHIKAWA HIDEKUNI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a focusing lens drive unit that offers suppressed operational noise generated while adjusting focus, no control disorder due to motor step-out, enhanced control performance, reduced heat generation during continuous use, better response in focusing operation and improved position control.SOLUTION: A focusing lens drive unit 1 comprises a focusing lens 10, a movement mechanism 20 for moving the focusing lens 10 in an optical axis direction, and a drive motor 30 for driving the movement mechanism 20. A slotless brushless motor is used as the drive motor 30.SELECTED DRAWING: Figure 1 【課題】フォーカス動作時の動作音を抑制することができ、脱調による制御乱れを無くして、制御性能を向上させ、連続使用時の発熱を抑えることができ、フォーカス動作の応答性及び位置制御の向上を図る。【解決手段】フォーカスレンズ駆動装置１は、フォーカスレンズ１０と、フォーカスレンズ１０を光軸方向に移動させる移動機構２０と、移動機構２０を駆動する駆動モータ３０とを備え、駆動モータ３０として、スロットレスブラシレスモータを用いる。【選択図】図１