Raytheon Company

David VanLue

Adam M Kennedy

Robert K Dodds

Edward G Meissner

John Steven Anderson

Todd E Sessler

Michael C Bailey

Dmitry Shmoys

Jim Andrew

Edward Meissner

A radiation detectorhas a baseand a windowthat define a vacuum chamber. Within the vacuum chamberis a temperature controlled filterand a focal plane array (FPA)defining a gap h therebetween. The filteris heat sunk to a readout integrated circuit (ROIC)and thermoelectric elementsto inhibit heat transfer from non-scene sourcesto the FPA. The temperature controlled filtermay also incorporate a bandpass filter to reflect all sources of radiation not within the desired wavelength region of interest. The temperature controlled filteris maintained at substantially the same temperature as the FPA

Thermally stabilized radiation detector utilizing temperature controlled radiation filter

A radiation detector () has a base (), a frame (), a window (), and solder layers () formed from a solder pre-form () to define a vacuum chamber (). Feedthroughs () penetrate the base () for electrical connection to internal components. A method for sealing the detector () aligns a lower detector assembly (), the frame () the window (), and the solder pre-forms () in a non-sealed relation within a processing chamber (). High temperature and low pressure is imposed, and the getter () is activated by resistive heating imposed by current leads (). The window (), frame (), and lower detector assembly () are then pressed together and sealed by the liquefied solder pre-forms (). The method eliminates the need for a seal port, combines several steps within the processing chamber (), and eliminates certain prior art cleaning steps.

Integrated package design and method for a radiation sensing device

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Santa Barbara, CA, United States of America

David VanLue