Detector Dewar cooler assemblies trade-off with equipment needs: a key issue for cost reduction

Jean-Pierre Chatard

doi:10.1117/12.243045

17 June 1996 Detector Dewar cooler assemblies trade-off with equipment needs: a key issue for cost reduction

Jean-Pierre Chatard

Proceedings Volume 2746, Infrared Detectors and Focal Plane Arrays IV; (1996) https://doi.org/10.1117/12.243045
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

Low cost equipment is the universal motto with the decrease in military budgets. A large panoply exists to solve partially this problem, such as simplification of the process, industrialization and the use of a collective manufacturing concept; but this is not enough. In the field of IRFPA using Mercury Cadmium Telluride (MCT), Sofradir has spent a lot of time in order to develop a very simple process to ensure producibility which has been totally demonstrated today. The production of more than 25 complex IRFPA per month has also allowed us to industrialize the process. A key factor is quantities. Today the only solution to increase quantities is to standardize detectors but in the field of IRFPA it is not so easy because each imaging system is specific. One solution to decrease the cost is to obtain the best trade-off between the application and the technology. As an example, people focus on indium antimonide staring array detectors today as they consider them as less expensive than other cooled infrared detector technologies. This is just because people focus on the FPA only, not on the global cost of the equipment. It will be demonstrated in this paper that MCT is a material so flexible that it is possible to obtain InSb detector performance at a higher temperature which allows decreased cost, volume and weight of the infrared equipment.

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Jean-Pierre Chatard "Detector Dewar cooler assemblies trade-off with equipment needs: a key issue for cost reduction", Proc. SPIE 2746, Infrared Detectors and Focal Plane Arrays IV, (17 June 1996); https://doi.org/10.1117/12.243045

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KEYWORDS

Staring arrays

Sensors

Infrared detectors

Infrared radiation

Infrared sensors

Infrared technology

Mercury cadmium telluride

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