Patent ID: 7617980

Claim:
An optical sensor module comprising: an aspherical emitter lens having an optical axis; a light emitting diode die positioned to illuminate the aspherical emitter lens and displaced from the optical axis of the aspherical emitter lens; an aspherical collector lens having an optical axis; a photodetector die positioned to receive light from the aspherical collector lens and displaced from the optical axis of the aspherical collector lens; wherein the aspherical emitter lens is operable to focus light from the emitting diode die within a specified diameter at specified distance from the light emitting diode die and the aspherical collector lens is operable to focus light received from outside of the photodetector die within a specified diameter at the photodetector die; and a substrate, wherein the light emitting diode die and the photodetector die are mounted on the substrate and the emitter and collector lenses are formed on the substrate.