Invention Grant
- Patent Title: Multi-coil voice coil motor drive architecture
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Application No.: US17221754Application Date: 2021-04-02
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Publication No.: US11483460B2Publication Date: 2022-10-25
- Inventor: Shahrooz Shahparnia , Anish Bhide
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Kowert, Hood, Munyon, Rankin & Goetzel, P.C.
- Agent Robert C. Kowert
- Main IPC: H04N5/225
- IPC: H04N5/225 ; G02B7/09 ; G03B5/04 ; G03B5/06 ; G03B13/36

Abstract:
A camera system may include one or more voice coil motor (VCM) actuators to implement focus, tilt and shift functions. The VCM actuators may include coils segmented into multiple coil segments having individually impedances lower than the impedance of the respective coil as a whole.
The coil segments may be individually driven by respective currents at different points in time to interact with magnet(s) to produce motive forces along the same axis. Based on the winding configuration and driving mode of the coil segments, the motive forces may move a lens group relative to an image sensor in a direction substantially orthogonal to an image plane, tilt the lens group relative to the image sensor, or shift the image sensor relative to the lens group on the image plane.
The coil segments may be individually driven by respective currents at different points in time to interact with magnet(s) to produce motive forces along the same axis. Based on the winding configuration and driving mode of the coil segments, the motive forces may move a lens group relative to an image sensor in a direction substantially orthogonal to an image plane, tilt the lens group relative to the image sensor, or shift the image sensor relative to the lens group on the image plane.
Public/Granted literature
- US20210314469A1 Multi-Coil Voice Coil Motor Drive Architecture Public/Granted day:2021-10-07
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