Systems and methods to extend near-infrared spectral response to imaging systems

摘要

One innovation includes an IR sensor 400 having an array of sensor pixels 401a-d that converts light into current, each sensor pixel in the array comprising photodetector regions 404, 412, photodetectors A lens (402) configured to focus light into an area, the lens being adjacent to the photodetector area, wherein the light propagates through the lens and into the photodetector area, the lens, substrate (421), the photodetector between the substrate and the lens An area is disposed and includes the substrate having one or more transistors 410 formed on the substrate. The sensor is also reflective structures 408, wherein the reflection is positioned between at least a portion of the substrate and at least a portion of the photodetector region and positioned such that at least a portion of the photodetector region is between the one or more reflective structures and the lens. Structures, and the one or more reflective structures are configured to reflect light that has passed through at least a portion of the photodetector region to the photodetector region.