Image sensor with complementary concave and convex lens layers and method for fabrication thereof

摘要

A method for forming an optoelectronic product provides for forming a concave lensing layer registered with a photoactive region within a substrate. The concave lensing layer is formed employing an isotropic etching method. Registered in turn with a concavity with the concave lensing layer is a convex microlens layer formed over the concave lensing layer. The combination of the foregoing lensing layers provides the optoelectronic product with enhanced optical performance.