Imager having a plurality of cylindrical lenses

摘要

The imager includes a semiconductor substrate having a top surface. A plurality of depressions is formed in the top surface of the substrate, and a plurality of spaced image pixels is formed in the substrate under the depressions. The imager further includes a plurality of first cylindrical substrate lenses having top surfaces. Each lens is formed in the depression corresponding to an underlying image pixel, with the top surface of each lens being optically coplanar with the top surface of the substrate. The imager further includes a plurality of second lenses overlying the first cylindrical lenses.