Ultraviolet and infrared focal place array

Abstract

The two-color focal plane array detects a target or image a target in the traviolet (UV) and infrared (IR) simultaneously. The system is a correlation, contrast or moving target tracker with very good countermeasure capability against a ground, sea, or airborne target. The tracker/seeker can be an all solid state no-moving parts configuration with the two focal plane devices of detectors aligned in their layer so as to be at an effectively cofocal.

Description

Claims

1. In a device comprising a plurality of first detectors arranged in a plane so as to constitute a first layer; said first detectors detecting a first band of radiation; a plurality of second detectors arranged in a plane so as to constitute a second layer; said second detectors detecting a second band of radiation; said first and second layers being arranged one on top of the other; said device senses radiation which flows through said first layer into said second layer; said plurality of first detectors being substantially transparent to said second band of radiation; said plurality of first and second detectors each constitute an array of detectors in its layer; a front end optics for focusing incoming radiation onto said first and second layers; said first band of radiation is ultraviolet; said second band of radiation is infrared; said plurality of first detectors are cadmium sulfide ultraviolet detectors arranged in a thin film substrate; and said plurality of second detectors are infrared detectors arranged in a thin film substrate.