RADIATION DETECTOR ARRAY HAVING CENTER SURROUND PIXEL OUTPUT

Abstract

A backside illuminated array (10) of radiation detectors (12) each of which has an output terminal for expressing a center-surround output signal. The array includes a plurality of the radiation detectors (12) disposed substantially adjacent to a first surface of the array, each of the radiation detectors comprising a central radiation detector (20) having a radiation absorbing area that is substantially surrounded by a radiation absorbing area of an associated peripheral radiation detector (22). The array further includes a transmission grating structure (16) disposed over a second surface (14a) of the array opposite the first surface for diffracting incident radiation for uniformly illuminating associated central and peripheral radiation detectors. The array further includes a plurality of flux concentrating structures (18) interposed between the transmission grating structure and the plurality of radiation detectors. Individual ones of the flux concentrating structures are disposed in registration with an individual one of the radiation detectors for concentrating incident optical radiation upon the central radiation detector thereof.

Source: Google Patents

35 USC §181 Secrecy Order

Inventor

• 1PAUL R. NORTON

Sensitive facility: Arlington VA (defense contractors)

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