Wafer-level lens module with extended depth of field and imaging device including the wafer-level lens module
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United States of America Patent
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Nov 6, 2012
Grant Date -
Mar 24, 2011
app pub date -
Sep 1, 2010
filing date -
Sep 23, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A wafer-level lens module with an extended depth of field (EDF) and an imaging device including the wafer-level lens module are provided. The wafer-level EDF lens module includes a plurality of wafer-scale lenses stacked with fixed distances therebetween. The plurality of wafer-scale lenses includes an effective lens having a profile which satisfies a corrected optimized aspheric function, wherein a profile of a center region of the effective lens is optimized for an infinity-focused image and a profile of an edge region of the effective lens is optimized for a macro-focused image.
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