Integrated optical biosensors including molded beam shaping elements

A system comprising:

• an integrated optical biosensor module comprising:
• one or more light sources operable to produce light for emission from the module;
• an integrated circuit chip including a photosensitive region, the photosensitive region including one or more photodetectors operable to detect light produced by the one or more light sources and reflected by a subject that is outside the module;
• and
• a clear mold covering encapsulating the one or more light sources, wherein the clear mold covering includes one or beam shaping elements each of which is disposed so as to intersect a path of a light beam from an associated one of the one or more light sources;
• the system further including a processor coupled to the integrated circuit chip and operable to determine a physiological condition of the subject based on signals from the one or more photodetectors.