Vacuum Compatible Blackbodies


Our Vacuum Blackbodies – VBB – combine the performances of traditional infrared reference sources with high-end features in order to operate in T-VACs (Thermal Vacuum Chambers), at cryogenic or ambient temperatures. They radiate with a high and steady emissivity over a wide spectrum and an extended temperature range. Their temperature is known and controlled with the finest accuracy enabling the closest simulation of space and earth radiation for the test and calibration of space-borne infrared imagers.

An emissive head compatible with vacuum environments is connected to our New Generation Controller located outside the T-VAC with electric feedthrough defined in accordance with the chambers’ configuration (selection of flanges ISO, CF, KF). The highest stability of regulation is ensured through an accurate power control and modelization of losses through radiation and conduction.

High emissivity is obtained thanks to vacuum compatible coating – compliant with the standards of the space industry –  applied on shaped plates. The emissive surface’s temperature is measured in real time via high precision Platinium sensors calibrated by NMI (National Metrology Institute).

Various possibilities of temperature control can be selected in order to suit the different T-VAC radiating configurations of the end user.

ECN100V20 product

3 Key Points

thermometer (2)

Absolute temperature range from 77K to 425K


High thermal uniformity and emissivity


Vacuum compatible coatings and materials compliant with Space Industry standards


A comprehensive range of Vacuum Blackbodies

  • DCN 1000 V: Highly uniform and fast regulating TEC-based blackbodies
  • ECN 100 V: Highly emissive resistances based blackbodies with wide temperature range
  • RCN V: Cavity blackbodies with emissivity greater than 0.999

Key Features

  • Extended area up to 500 x 500 m2
  • Temperature range from + 77K to + 425K
  • Real-time display of temperature data in °C, K, and °F
  • Materials and assembling procedures compatible with cleanroom and vacuum conditions, compliant with ISO-5 cleanliness standards
  • Fast response time and high stability through fine and accurate power control
  • High thermal uniformity and emissivity
  • Built In Test Equipment (BITE)
  • Exclusive automatic compensation of the influence of the chamber radiation

Main applications of Vacuum Blackbodies

Our Vacuum Blackbodies aim at simulating space and terrestrial radiation to test and calibrate space infrared sensors. Below are some examples of major space programs we took part in:



Space Agencies and Centers


  • NASA – JPL (Jet Propulsion Lab)
  • JAXA (Japanese Space Agency – Japan Aerospace Exploration Agency)
  • ISRO – SAC (Indian Space Agency – Indian Space Research Organization – Satellite Application Centre)
  • CNES (French Space Agency)
  • Liège Space Center

Find our ECN100V7 and ECN100V2 Blackbodies in this video from Bertin:

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