Tech Briefs Magazine - May 2022 - PIT-4
Understanding
Cryocooled Infrared
System Reliability
W
here the ability to detect
mid-wave infrared (MWIR)
radiation is mission critical,
readiness and the importance
of long, maintenance-free infrared
(IR) system operation is vital. In turn,
cooled MWIR camera modules must be
designed, tested, and manufactured to
meet rigorous environmental and reliability
requirements. This includes military
temperature ranges and high shock
and vibration levels. Cooled MWIR camera
reliability and operational lifetime
are typically determined by the operation
and lifetime of the cryo-cooler within
such systems.
Infrared Camera Module and
System Introduction
Cryocooled MWIR camera modules
come in a variety of model configurations,
each incorporating similar components,
but with slight variations to optimize
performance versus size, weight,
and power. The following components
and functions are included in MWIR
camera modules and systems.
Focal Plane Array (FPA): The FPA is
comprised of a detector hybridized to a
read-out integrated circuit (ROIC). The
detector converts MWIR photons to an
electrical current. The ROIC reads the
current and provides an analog voltage or
digital signal that is proportional to the
number of photons at the detector. Presently,
InSb and most HgCdTe detectors
operate best at cryogenic temperatures
(e.g., 77K). These low temperatures require
significant cooling capacity, which
translates into a larger cooler size, increased
weight, and increased power. Hot
MWIR Barrier Infrared (e.g., T2SL) detectors
are considered high operating
temperature (HOT) at approximately
120K operation and, therefore, require
less cooling capacity. These higher temperatures
mean smaller cooler size, lower
weight, less power required, reduced time
to image, and increased cooler lifetime.
4
Photonics & Imaging Technology, May 2022
PIT Imaging Feature 0522_1.indd 4
Cov
ToC
4/18/22 12:13 PM
PRESSLAB/Shutterstock.com
http://info.hotims.com/82321-831
Tech Briefs Magazine - May 2022
Table of Contents for the Digital Edition of Tech Briefs Magazine - May 2022
Tech Briefs Magazine - May 2022 - Intro
Tech Briefs Magazine - May 2022 - Sponsor
Tech Briefs Magazine - May 2022 - Cov1
Tech Briefs Magazine - May 2022 - Cov2
Tech Briefs Magazine - May 2022 - 1
Tech Briefs Magazine - May 2022 - 2
Tech Briefs Magazine - May 2022 - 3
Tech Briefs Magazine - May 2022 - 4
Tech Briefs Magazine - May 2022 - 5
Tech Briefs Magazine - May 2022 - 6
Tech Briefs Magazine - May 2022 - 7
Tech Briefs Magazine - May 2022 - 8
Tech Briefs Magazine - May 2022 - 9
Tech Briefs Magazine - May 2022 - 10
Tech Briefs Magazine - May 2022 - 11
Tech Briefs Magazine - May 2022 - 12
Tech Briefs Magazine - May 2022 - 13
Tech Briefs Magazine - May 2022 - 14
Tech Briefs Magazine - May 2022 - 15
Tech Briefs Magazine - May 2022 - 16
Tech Briefs Magazine - May 2022 - 17
Tech Briefs Magazine - May 2022 - 18
Tech Briefs Magazine - May 2022 - 19
Tech Briefs Magazine - May 2022 - 20
Tech Briefs Magazine - May 2022 - 21
Tech Briefs Magazine - May 2022 - 22
Tech Briefs Magazine - May 2022 - 23
Tech Briefs Magazine - May 2022 - 24
Tech Briefs Magazine - May 2022 - 25
Tech Briefs Magazine - May 2022 - 26
Tech Briefs Magazine - May 2022 - 27
Tech Briefs Magazine - May 2022 - 28
Tech Briefs Magazine - May 2022 - 29
Tech Briefs Magazine - May 2022 - 30
Tech Briefs Magazine - May 2022 - 31
Tech Briefs Magazine - May 2022 - 32
Tech Briefs Magazine - May 2022 - 33
Tech Briefs Magazine - May 2022 - 34
Tech Briefs Magazine - May 2022 - 35
Tech Briefs Magazine - May 2022 - 36
Tech Briefs Magazine - May 2022 - 37
Tech Briefs Magazine - May 2022 - 38
Tech Briefs Magazine - May 2022 - 39
Tech Briefs Magazine - May 2022 - 40
Tech Briefs Magazine - May 2022 - 41
Tech Briefs Magazine - May 2022 - 42
Tech Briefs Magazine - May 2022 - 43
Tech Briefs Magazine - May 2022 - 44
Tech Briefs Magazine - May 2022 - 45
Tech Briefs Magazine - May 2022 - 46
Tech Briefs Magazine - May 2022 - 47
Tech Briefs Magazine - May 2022 - 48
Tech Briefs Magazine - May 2022 - 49
Tech Briefs Magazine - May 2022 - 50
Tech Briefs Magazine - May 2022 - 51
Tech Briefs Magazine - May 2022 - 52
Tech Briefs Magazine - May 2022 - 53
Tech Briefs Magazine - May 2022 - 54
Tech Briefs Magazine - May 2022 - 55
Tech Briefs Magazine - May 2022 - 56
Tech Briefs Magazine - May 2022 - 57
Tech Briefs Magazine - May 2022 - 58
Tech Briefs Magazine - May 2022 - 59
Tech Briefs Magazine - May 2022 - 60
Tech Briefs Magazine - May 2022 - Cov3
Tech Briefs Magazine - May 2022 - Cov4
Tech Briefs Magazine - May 2022 - PIT-Cov1
Tech Briefs Magazine - May 2022 - PIT-Cov2
Tech Briefs Magazine - May 2022 - PIT-1
Tech Briefs Magazine - May 2022 - PIT-2
Tech Briefs Magazine - May 2022 - PIT-3
Tech Briefs Magazine - May 2022 - PIT-4
Tech Briefs Magazine - May 2022 - PIT-5
Tech Briefs Magazine - May 2022 - PIT-6
Tech Briefs Magazine - May 2022 - PIT-7
Tech Briefs Magazine - May 2022 - PIT-8
Tech Briefs Magazine - May 2022 - PIT-9
Tech Briefs Magazine - May 2022 - PIT-10
Tech Briefs Magazine - May 2022 - PIT-11
Tech Briefs Magazine - May 2022 - PIT-12
Tech Briefs Magazine - May 2022 - PIT-13
Tech Briefs Magazine - May 2022 - PIT-14
Tech Briefs Magazine - May 2022 - PIT-15
Tech Briefs Magazine - May 2022 - PIT-16
Tech Briefs Magazine - May 2022 - PIT-17
Tech Briefs Magazine - May 2022 - PIT-18
Tech Briefs Magazine - May 2022 - PIT-19
Tech Briefs Magazine - May 2022 - PIT-20
Tech Briefs Magazine - May 2022 - PIT-21
Tech Briefs Magazine - May 2022 - PIT-22
Tech Briefs Magazine - May 2022 - PIT-23
Tech Briefs Magazine - May 2022 - PIT-24
Tech Briefs Magazine - May 2022 - PIT-25
Tech Briefs Magazine - May 2022 - PIT-26
Tech Briefs Magazine - May 2022 - PIT-27
Tech Briefs Magazine - May 2022 - PIT-28
Tech Briefs Magazine - May 2022 - PIT-Cov3
Tech Briefs Magazine - May 2022 - PIT-Cov4
Tech Briefs Magazine - May 2022 - BET-Cov1a
Tech Briefs Magazine - May 2022 - BET-Cov1b
Tech Briefs Magazine - May 2022 - BET-Cov1
Tech Briefs Magazine - May 2022 - BET-Cov2
Tech Briefs Magazine - May 2022 - BET-1
Tech Briefs Magazine - May 2022 - BET-2
Tech Briefs Magazine - May 2022 - BET-3
Tech Briefs Magazine - May 2022 - BET-4
Tech Briefs Magazine - May 2022 - BET-5
Tech Briefs Magazine - May 2022 - BET-6
Tech Briefs Magazine - May 2022 - BET-7
Tech Briefs Magazine - May 2022 - BET-8
Tech Briefs Magazine - May 2022 - BET-9
Tech Briefs Magazine - May 2022 - BET-10
Tech Briefs Magazine - May 2022 - BET-11
Tech Briefs Magazine - May 2022 - BET-12
Tech Briefs Magazine - May 2022 - BET-13
Tech Briefs Magazine - May 2022 - BET-14
Tech Briefs Magazine - May 2022 - BET-15
Tech Briefs Magazine - May 2022 - BET-16
Tech Briefs Magazine - May 2022 - BET-17
Tech Briefs Magazine - May 2022 - BET-18
Tech Briefs Magazine - May 2022 - BET-19
Tech Briefs Magazine - May 2022 - BET-20
Tech Briefs Magazine - May 2022 - BET-21
Tech Briefs Magazine - May 2022 - BET-22
Tech Briefs Magazine - May 2022 - BET-23
Tech Briefs Magazine - May 2022 - BET-24
Tech Briefs Magazine - May 2022 - BET-25
Tech Briefs Magazine - May 2022 - BET-26
Tech Briefs Magazine - May 2022 - BET-27
Tech Briefs Magazine - May 2022 - BET-Cov3
https://www.nxtbook.com/smg/techbriefs/24TB12
https://www.nxtbook.com/smg/techbriefs/24TB11
https://www.nxtbook.com/smg/techbriefs/24TB10
https://www.nxtbook.com/smg/techbriefs/24TB09B
https://www.nxtbook.com/smg/techbriefs/24TB09
https://www.nxtbook.com/smg/techbriefs/24TB08
https://www.nxtbook.com/smg/techbriefs/24TB07
https://www.nxtbook.com/smg/techbriefs/24TB06
https://www.nxtbook.com/smg/techbriefs/24TB05B
https://www.nxtbook.com/smg/techbriefs/24TB05
https://www.nxtbook.com/smg/techbriefs/24TB04
https://www.nxtbook.com/smg/techbriefs/24TB03
https://www.nxtbook.com/smg/techbriefs/24TB02
https://www.nxtbook.com/smg/techbriefs/24TB01
https://www.nxtbook.com/smg/techbriefs/23TB12
https://www.nxtbook.com/smg/techbriefs/23TB11
https://www.nxtbook.com/smg/techbriefs/23TB10
https://www.nxtbook.com/smg/techbriefs/23TB09
https://www.nxtbook.com/smg/techbriefs/23TB08
https://www.nxtbook.com/smg/techbriefs/23TB07
https://www.nxtbook.com/smg/techbriefs/23TB06
https://www.nxtbook.com/smg/techbriefs/23TB05
https://www.nxtbook.com/smg/techbriefs/23TB04
https://www.nxtbook.com/smg/techbriefs/23TB03
https://www.nxtbook.com/smg/techbriefs/23TB02
https://www.nxtbook.com/smg/techbriefs/23TB01
https://www.nxtbook.com/smg/Testing/22TB12
https://www.nxtbook.com/smg/techbriefs/22TB12
https://www.nxtbook.com/smg/techbriefs/22TB11
https://www.nxtbook.com/smg/techbriefs/22TB10
https://www.nxtbook.com/smg/techbriefs/22TB09
https://www.nxtbook.com/smg/techbriefs/22TB08
https://www.nxtbook.com/smg/techbriefs/22TB07
https://www.nxtbook.com/smg/techbriefs/22TB06
https://www.nxtbook.com/smg/techbriefs/22TB05-P
https://www.nxtbook.com/smg/techbriefs/22TB05-D
https://www.nxtbook.com/smg/techbriefs/22TB04
https://www.nxtbook.com/smg/techbriefs/22TB03
https://www.nxtbook.com/smg/techbriefs/22TB02
https://www.nxtbook.com/smg/techbriefs/22TB01
https://www.nxtbook.com/smg/techbriefs/21TB12
https://www.nxtbook.com/smg/techbriefs/21TB11
https://www.nxtbook.com/smg/techbriefs/21TB10
https://www.nxtbook.com/smg/techbriefs/21TB09
https://www.nxtbook.com/smg/techbriefs/21TB08
https://www.nxtbook.com/smg/techbriefs/21TB07
https://www.nxtbook.com/smg/techbriefs/21TB06
https://www.nxtbook.com/smg/techbriefs/21TB05
https://www.nxtbook.com/smg/techbriefs/21TB04
https://www.nxtbook.com/smg/techbriefs/21BT03
https://www.nxtbook.com/smg/techbriefs/21TB02
https://www.nxtbookmedia.com