Thermoelectric cooler maintains peak performance in machine vision systems

04-01-2021 | Laird | Subs & Systems

By combining image-processing and pattern-recognition techniques, machine vision systems offer advanced inspection within quality control, robotics and wire bonding. The new HiTemp ETX thermoelectric cooler from Laird Thermal Systems can be employed to keep the operating temperature under its maximum limit and stop image quality from deteriorating.

The image quality of machine vision systems will generally degrade when the CCD and CMOS imaging sensors’ operating temperature exceeds 50C. Therefore, passive cooling techniques may be acceptable for machine vision systems in indoor environments; outdoor applications often exceed 40C, demanding an active cooling solution. This thermal solution must fit tight geometrical space constraints, stop thermal shorting and guard sensors from moisture intrusion and outgassing.

Supporting machine vision applications operating in temperatures between 80C to 120C, the new series of thermoelectric coolers provide a cooling capacity from 7.7W up to 322W - all in a compact form factor. The cooler creates a maximum temperature differential (delta T) of 83C.

"Our new HiTemp ETX thermoelectric cooler is assembled with advanced thermoelectric materials that boost cooling capacity by up to 10%,” said Andrew Dereka, product director at Laird Thermal Systems. "The robust module construction allows it to operate in high-temperature environments where standard thermoelectric coolers fail."

By Natasha Shek