Patent ID: 9395182
Filing Date: 2016-07-19
CPC Classification: G01C,G01S,H01L

Claim Text:
1. A method of generating a three-dimensional image using a photodiode detector array comprising a substrate, a front interface, and a back interface opposite the front interface, oriented such that the substrate is between the front and the back interfaces, the back interface having a first layer and a second layer, said method comprising: orienting a first active region and a second active region along the front interface to detect a first photon transmitted through a first window or a second window, the first window and the second window defined in the second layer of the back interface, the first active region and the second active region each including an absorber having an absorber bandgap and a multiplier having a multiplier bandgap; absorbing a second photon using a filter formed from a first material having a bandgap between the absorber bandgap and the multiplier bandgap, the filter positioned in the first layer of the back interface and between the substrate and the second layer, the substrate positioned between the filter and an anode of the photodiode detector array; absorbing a third photon using a field positioned in the second layer of the back interface, and further positioned between the first window and the second window, wherein the field is coated with a second material that is different from the first material; and generating the image based on at least the detection of the first photon transmitted through the first window or the second window.