SUNNYVALE, Calif., March 31 -- OmniVision Technologies Inc., a supplier of CMOS image sensors, announced this week it has signed a definitive agreement to acquire all of the outstanding securities of CDM Optics Inc. (CDM), a Boulder, Colo.-based private corporation, for $30 million in cash and stock. CDM is the exclusive licensee of patented Wavefront Coding technology, which increases the performance of a camera system by increasing the depth of field or correcting optical aberrations of a photographic image. 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