Techno Defence makes a ten-gram cooler that India previously had to import
The Mumbai company has developed a miniature cryogenic cooler for infrared sensors, built with DRDO support and handed over for trials.
Techno Defence Private Limited, a Mumbai-based company with a design office in Thane, has developed a ten-gram dual-flow miniature Joule-Thomson cryocooler for India's defence sector. The startup, led by Dr Pravin Salinkar, former DRDO laboratory director, collaborated with Solid State Physics Laboratory, DRDO, under the Technology Development Fund since 2020.
The device cools infrared sensors to minus 196 degrees Celsius, reducing their own noise and enabling them to detect faint signals. The cooler weighs about ten grams and was completed by 2023-24, passing trials. It is primarily used in infrared-guided weapons, which typically require cooling systems not available in many other suppliers.
The company adopted small-scale production techniques and utilized local resources, with assembly performed under strict quality control by a small, female-dominated team.
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