Zoom lens and imaging device using same

US8576495B2 · kind B2 · utility

Assignees

• Premier Image Technology(China) Ltd. · CN
• HON HAI PRECISION INDUSTRY CO., LTD. · TW

Inventors

• Zi-Yuan Li · Tangxia, CN
• Jun Li · Nanhu, CN
• Jian Zhang · San Jose, US
• Li HE · Tangxia, CN
• Quan Tang · Tangxia, CN
• Xiao-Tian Kang · Foshan, CN

Key dates

• Filing date: Mar 23, 2012
• Grant date: Nov 5, 2013
• Expiry date: Jun 18, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B15/173
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A zoom lens includes a first lens unit, a second lens unit, a third lens unit and a fourth lens unit. The third lens unit includes a movable barrel, a first slidable member able to move in a first direction perpendicular to the optical axis, and a second slidable member able to move along a second direction perpendicular to the optical axis and also perpendicular to the first direction. The movable barrel includes a first Hall member and a first coil, the first slidable member comprises a second Hall member and a second coil. A first magnet is aligned with the first coil, and a second magnet is aligned with the second coil, both coils can be independently energized to compensate any shaking movements experienced by the Hall members.