Lens barrel retention systems of a camera module
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United States of America Patent
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Issued Date -
Nov 3, 2011
app pub date -
Apr 28, 2010
filing date -
Apr 28, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Systems and methods to achieve an auto-focus camera module having a retention system with low friction have been disclosed. A magnetic retention system holds the carrier of the camera module, the ball bearings, and the movable lens barrel together. In case of a major mechanical shock the force of the magnetic retention system may not be sufficient to hold the parts together. Therefore a hook, which is deployed on a fixed part of the carrier of the camera module, is introduced in order to hold the parts together when a mechanical shock occurs. The hook does only engage in the movable lens barrel in a shock condition, the hook does not touch the lens barrel under normal operation conditions, hence not causing any friction if no shock occurs.
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