Autofocus camera systems and methods
AssigneeTessera MEMS Technologies, Inc.
InventorsRoman C. Gutierrez, Robert J. Calvet, Darrell Harrington, Guiqin Wang, Kumaraswamy Jayaraj
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Abstract
A method and system for facilitating focusing of a miniature camera are disclosed. One or more lenses can be attached to a MEMS stage. The MEMS stage can be moved by a Lorentz actuator. The MEMS stage can be configured to limit movement of the lens(es) to a single degree of freedom to inhibit misalignment thereof with respect to an imaging sensor. The stage can be biased to a predefined position thereof, e.g., for focus at infinity. A metal cover can inhibit electromagnetic interference and can limit movement of the lens(es).
Claims22
A method, comprising:
- attaching a lens to a MEMS stage;
- and,
- providing a snubber assembly to substantially limit movement of the MEMS stage to movement in less than six degrees of freedom.
A method, comprising:
- attaching a lens to a MEMS stage, the MEMS stage substantially limiting movement of the lens to one degree of freedom;
- providing a snubber assembly to limit movement of the MEMS stage substantially in five degrees of freedom;
- and,
- biasing the MEMS stage in one direction along the one degree of freedom.
Dependencies are inferred from the claim text.