BLACKBODY

Blackbody radiation sources serve as the fundamental calibration reference for infrared thermometry and imaging systems.

For mid-and low-temperature blackbodies(typically-40℃to+150℃),radiation accuracy is directly determined by surface temperature stability and uniformity.

Conventionalapproaches—resistive heaters combined with compressor-based refrigeration,liquid nitrogen cooling,or forced air—suffer from inherent limitations:

1.Slow thermal response and poor control efficiency

2.Temperature drift and non-uniformity across the cavity surface

3.Large,complex mechanical structures with vibration and noise

4.High operating cost,maintenance burden,and safety concerns

5.Inability to achieve true bidirectional(heating&cooling)precision control

By replacing mechanical cooling with a multi-channel TEC architecture and closed-loop PID control,blackbody performance is fundamentally upgraded:

1.Temperature control accuracy to±0.01℃

2.Radiating surface uniformity better than±0.1℃

3.Fast bidirectional heating and cooling,maintaining stability under varying ambient conditions

4.Startup response<30 s,with heating/cooling rates improved by>50%

5.Overshoot-free stabilization,enabling faster and more repeatable calibration cycles

1.Solid-state,vibration-free operation→preserves radiance stability

2.Bidirectional thermal control→true dynamic temperature regulation

3.Compact,modular TEC arrays→scalable toφ50-200 mm apertures

4.Low noise and maintenance-free→ideal for laboratory and field calibration

5.High integration flexibility→supports portable and benchtop blackbody designs

The following models represent typical multi-stage TEC models commonly used in blackbody applications.They are provided for reference and comparison only,not as a complete product list.