A TTRS is a TE cooler assembly providing a temperature controlled, radiometrically uniform, high-emissivity surface used to calibrate infrared detector arrays.
TTRS assemblies are both hermetically sealed or open devices consisting of a TEC, a high-emissivity, thermally uniform emitting surface and a temperature-sensing device. Typically, the TECs mounts to a TO-3 or TO-8 header or a custom designed mounting bracket.
TTRS’s provide correction for responsivity and gain differences via a two-temperature (color) correction. In scanning systems, this is performed using two TTRS devices that are included in the optical field of view. In starring systems, a single TTRS is inserted into the optical field of view, and the temperature is rapidly changed to perform a multi-color correction.
Marlow Industries supplies a wide variety of both custom and catalog TTRS assemblies. These TTRS’s are currently used in both starring and scanning systems and include hermetically sealed and unsealed units. Over 30 different designs have been developed and delivered over the past 10 years.
In additional to a production capability, which has delivered thousands of TTRS’s, Marlow also has experienced engineers and other resources to address the design and development issues. TTRS’s can be supplied with custom-mounting brackets, wiring harnesses, and flex circuit assemblies to meet ANSI/J-STD-001 specification. Marlow Industries also provides in-house testing, included IR camera uniformity testing, for all TTRS products.
