| abstract |
An improved infra-red scanning system is disclosed. The scanning system includes an infra-red detector array for providing electrical signals responsive to IR radiation. The electrical signals are processed by a semiconductor charge transfer device multiplexer from which display compatible signals are produced. The electrical signals are a.c. coupled to the semiconductor charge transfer device, thereby substantially eliminating the large IR background noise. In a preferred embodiment a photocapacitor advantageously both detects the IR radiation and a.c. couples the signal to a charge coupled device array. |