Shortwave infrared (SWIR) linear array was integrated into the 3D laser camera system to scan for tiny fractures and diagnose thermal tile problems on the spacecraft while in orbit
Sensors Unlimited (SUI), a manufacturer of shortwave infrared (SWIR) linear arrays, photodiodes and imaging systems, has played a critical role in the inspection system that was implemented during the flight of the Space Shuttle Discovery for the Return to Flight mission.
The SU256LX-1.7RT-0500, a 256-element array on a 50um pitch with a 1.7um cutoff, was integrated into the 3D laser camera system (LCS) developed by Neptec Design.
Neptec's high-resolution 3D imaging laser system was part of the 15-metre boom detector system deployed to inspect the shuttle's hull and wings while in orbit.
The rugged camera was designed to scan for tiny fractures and diagnose thermal tile problems even in hard to reach areas, such as the underside of the spacecraft's hull.
The LCS uses a synchronised scanning technique patented by the National Research Council of Canada to generate three-dimensional data.
Neptec's laser sensor system yields much more information than traditional, two-dimensional imagery and is the first three-dimensional laser scanner qualified for use in space flight.
According to Neptec, the inspection boom provided essential information to Nasa decision makers that helped them determine the space shuttle Discovery could safely return to earth.
The imaging array, developed with Sensors Unlimited's proprietary indium gallium arsenide (InGaAs) technology, aided in the inspection and analysis of the tiles by enabling imaging in the shortwave infrared region.
Martin Ettenberg, director of imaging products at Sensors Unlimited, notes: "We are proud to have played a role in the success of this unprecedented mission and to have our SWIR linear array integrated into Neptec's laser camera system.
"We congratulate all the tireless folks at Nasa and the entire team of Space Shuttle Discovery for the successful flight and safe return of the 'Return to Flight' mission".
Sensors Unlimited (SUI), founded in 1991 to pioneer design and production of near-infrared detectors, says it is the world leader in indium gallium arsenide (InGaAs) imaging technology.
With in-house capabilities, Sensors Unlimited manufactures advanced infrared cameras, short-wave infrared and near-IR focal plane arrays and revolutionary high speed PIN and avalanche photodiodes.
It says its proprietary foundry and expertise delivers reliable, high performance products for a variety of critical military, security, industrial, commercial and telecommunications industries.
Applications include covert surveillance, machine vision, night vision, health and safety protocols, historical art inspection and more.
