Stacked electromagnetic radiation sensors for visible image sensing and infrared depth sensing or for visible image sensing and infrared image sensing

摘要

A sensor stack is described. The sensor stack includes a first electromagnetic radiation sensor and a second electromagnetic radiation sensor. The first electromagnetic radiation sensor has high quantum efficiency for converting the first range of electromagnetic radiation wavelengths into a first set of electrical signals. The second electromagnetic radiation sensor is positioned in the field of view of the first electromagnetic radiation sensor and has high quantum efficiency for converting the second range of electromagnetic radiation wavelengths into a second set of electrical signals and is capable of producing the first range of electromagnetic radiation wavelengths. It has low quantum efficiency for converting into two sets of electrical signals. The first range of wavelengths does not overlap the second range of wavelengths, and the second electromagnetic radiation sensor is at least partially transmissive for the first range of electromagnetic radiation wavelengths.