Ruggedized IR Dewar Detector Assemblies for Harsh Environments

Ruggedizing infrared Integrated Dewar-Detector Assemblies for harsh environmental conditions

Cryogenically cooled infrared electro-optical payloads have to operate and survive frequent exposure to harsh vibrational and shock conditions typical of the modern battlefield. This necessitates the development of special approaches to ruggedizing their sensitive components. The ruggedization requirement holds true specifically for Integrated Dewar-Detector Assemblies (IDDA), where the infrared Focal Plane Array (FPA) is usually supported by a thin-walled cold finger enveloped by an evacuated tubular Dewar. Without sufficient ruggedization, harsh environmental vibration may give rise to structural resonance responses resulting in spoiled image quality and even mechanical fractures due to material fatigue. The authors present their approach for the...

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A. Veprik
N. Ashush
B. Shlomovich
Y. Oppenhaim
Y. Gridish
E. Kahanov
A. Koifman

Attenuation of cryocooler induced vibration using multimodal tuned dynamic absorbers
- Alexander Veprik a
- Vladimir Babitsky b
- Avi Tuito c
- +0
a SemiConductor Devices POB 2250, Haifa 31021, Israel
b Loughborough University, Epinal Way, Loughborough, LE11 3TU, UK
c Israel Ministry of Defense, Kirya, Tel Aviv, 64734, Israel

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    - Long Range SurveillanceSCD’s detectors are used in long range surveillance thermal cameras. Thanks to the detectors’ high resolution imaging, these cameras are successfully used in any environment from heavy fog to complete darkness and for 24/7 situational awareness and long-range recognition and identification of targets.
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    - Situational AwarenessSCD’s low SWaP detectors are successfully used in situational awareness systems which are the perfect solution for search and rescue missions because they can rapidly gather information from inaccessible or unsafe locations, thus increasing safety and rapidity of interventions. Thanks to the low weight, size and power of these detectors, Semi Conductor Devices provides the ultimate solution for both, low SWaP and high-end systems used for situational awareness missions.
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    - Long Range SurveillanceSCD’s detectors are used in long range surveillance thermal cameras. Thanks to the detectors’ high resolution imaging, these cameras are successfully used in any environment from heavy fog to complete darkness and for 24/7 situational awareness and long-range recognition and identification of targets.
    - Missile Warning SystemSCD’s SWIR, MWIR and LWIR detectors are successfully used in Missile Warning Systems (MWS) to enable detection of attacking missiles. Advanced missile warning systems and countermeasures against IR-guided missiles have become critical for survivability and this is why Semi Conductor Devices has developed infrared detector technology for the entire spectral range, to meet every MWS requirement.
    - ReconnaissanceSCD’s SWIR, MWIR and LWIR detectors have been integrated into thermal imagers and military targeting devices for use at reconnaissance and target naval missions. Thanks to the high-resolution infrared detectors, it is possible to accurately observe surroundings, both during day and night, and identify potential threats at an early stage.
    - Remote Weapon SightSCD’s cooled and uncooled infrared detectors are used in remote weapon sight systems which are mounted in different armored vehicles. The highest performance of SCD’s detectors enable the remote weapon sights to perform military missions at night or during adverse weather conditions and to operate under extreme conditions of shock and vibration.
    - Situational AwarenessSCD’s low SWaP detectors are successfully used in situational awareness systems which are the perfect solution for search and rescue missions because they can rapidly gather information from inaccessible or unsafe locations, thus increasing safety and rapidity of interventions. Thanks to the low weight, size and power of these detectors, Semi Conductor Devices provides the ultimate solution for both, low SWaP and high-end systems used for situational awareness missions.
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  - MedicalAbnormal body temperature is a natural indicator of illness. Infrared thermography is a fast, non-contact and non-invasive alternative method for monitoring body temperature and to map body surface temperature remotely. Infrared thermography has been successfully used in the diagnosis of breast cancer, diabetes neuropathy and peripheral vascular disorders. It has also been used to detect problems associated with gynecology, kidney transplantation, dermatology, heart, neonatal physiology, fever screening and brain imaging. SCD’s detectors provide a perfect solution to thermal cameras which are intended to be used on medical applications.
  - Non Destructive TestingSCD’s unmatched portfolio of SWIR, MWIR and LWIR cooled and uncooled detectors are integrated into thermal cameras for use in non-destructive testing. These cameras are powerful, non-invasive tools that can be used to monitor and diagnose problems in a variety of industrial systems. Any system that generates heat can be observed with the camera and fluctuations in that heat can indicate potential problems such as loss of energy, a damaged component or areas in need of maintenance.
  - Semiconductor InspectionsSCD’s SWIR and MWIR detectors are integrated into thermal cameras used for semiconductor inspection. These cameras are powerful, non-invasive tools that can be used to detect physical defects and particles on wafers.
  - ThermographySCD’s cooled and uncooled detectors have been successfully integrated into thermography cameras which help detect failures in equipment which are signaled by heat patterns in the infrared spectrum and are not visible to the human eye.
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Ruggedizing infrared Integrated Dewar-Detector Assemblies for harsh environmental conditions

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Attenuation of cryocooler induced vibration using multimodal tuned dynamic absorbers

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