Detector Module Offers >20,000 h MTTF
• split cooler
• 640 x 480 focal plane array
• 99.9% operability
IRnova AB has introduced a detector Dewar cooler assembly (DDCA) module based on proprietary quantum well infrared photodetector technology and featuring a split linear Stirling cooler. The company manufactures the focal plane arrays, and partners specializing in cooler and detector manufacturing assemble them into complete modules.
The IRnova640 DDCA features a 640 × 480 focal plane array, a proprietary low-power Argus 640 readout and a linear compressor. Peak spectral response is 8.6 μm, maximum frame rate is 60 Hz, optical response is 7 μA/°C, and typical overall operability is 99.9%. Mean temporal noise equivalent temperature difference (NETD) is 25 mK, and mean spatial NETD is 15 mK. Mean time to failure (MTTF) is estimated to be above 20,000 h.
Outputs are selectable among one, two or four. Transfer line length is up to 125 mm, or longer upon request. The assembly operates from a 27- to 32-VDC supply and consumes <75 W during cool down. Vibration output is <2.2 N.
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