Blackbodies

Blackbody is a  device that works as near perfect emitter of thermal radiation in spectral range from visible to microwaves.  There are many blackbodies available on international market. Inframet specializes in  high-tech blackbodies optimized for narrow market of high requirements.   The blackbodies offered by Inframet can be divided into following  groups:  

  • TCB series blackbodies (low temperature area blackbodies),
  • DAP double blackbodies for non uniformity calibration  of thermal imagers,
  • BLIQ blackbodies (low temperature area blackbodies including subzero temperatures),
  • MTB blackbodies ( medium temperature area blackbodies),
  • MAB blackbodies (large area blackbodies for THz/short microwave range).
  • HTB blackbodies ( high temperature cavity blackbodies),
  • UHT blackbodies ( ultra high temperature cavity blackbodies),
  • VSB (low temperature area blackbodies for vacuum chambers).
 

TCB blackbodies DAP double blackbodies

TCB blackbodies are differential temperature, area blackbodies (thermoelectrically controlled) of temperature regulated from 0°C to +100°C (option from -40°C up to +150°C). The blackbodies are characterized by excellent temperature resolution (1 mK), temperature stability (up to 1 mK) and emissivity (typically 0.98  option -0.99). The emitter area vary from 50x50 for TCB-2D model to 500x500mm for TCB-20D model. These blackbodies are targeted for high or ultra high requirement applications like systems for testing cooled staring thermal imagers, metrological standards, or research programs.

 Inframet can optionally deliver TCB differential blackbodies coated using  VANTABlack®-S high emissivity coating   and achieve blackbodies  of emissivity over 0.99.  However, Inframet does not recommend  such blackbodies  because the emitter surface  is soft and not durable. It is practically impossible to clean surface of  the blackbody coated with VANTABlack®-S  without damaging the coating.  Blackbodies with typical coating of 0.98 emissivity are recommended.

DAP blackbodies as near perfect cost effective solution for non uniformity calibration of thermal imagers. DAP blackbody is an equivalent to two typical blackbodies but is offered at cost only slightly higher than typical TCB blackbody. At the same time ultra high accuracy of differential temperature between two emitters of DAP blackbody is achieved. 

BLIQ blackbodies MTB blackbodies

BLIQ blackbodies are special version of TCB blackbodies designed to extend temperature range to sub-zero temperatures as low as -40ºC.

MTB blackbodies are ultra precision, area blackbodies designed to simulate medium temperature targets. Radiator temperature is controlled using a thin, area heating element. Absolute temperate of the blackbody radiator can be regulated from 50°C to 600°C. Emitter area can vary from 50´50 mm to 500x500 mm depending on model.  

                  

MAB blackbody

HTB blackbody

MAB blackbodies are the first commercially available large area blackbodies of high emissivity in THz and short microwave range offered at international market. The blackbodies have been developed after several years of experiments carried out by Inframet research team. Design of these blackbodies is based on a special castable absorber coating optimized for THz/short microwave range, large thermally uniform emitter plate and ultra precision control electronics.
HTB blackbodies are high temperature cavity blackbodies that enable regulation of cavity temperature from 100°C up to 1200°C. The cavity diameter can vary from 20 mm up to to 50 mm depending on model.
   
UHT blackbody VSB blackbody

UHT blackbodies are high temperature, cavity blackbodies of temperature range up to 1500°C. Due to a special design of the cavity, UHT blackbody offers high emissivity in exceptionally wide spectral band from about 1 µm to 3000 µm. This ultra wide spectral band makes possible to use UHT blackbody as a standard radiation source in both infrared band and THz band. The blackbody is also characterized by a relatively large aperture of 38 mm of the emitting cavity (apertures of typical high temperature blackbodies are rarely bigger than 15 mm).

Testing infrared systems to be sent into space missions is typically done using blackbodies in located in cooled vacuum chambers that simulate space conditions. VSB blackbodies are a new type of blackbodies offered by Inframet to meet demands of space laboratories. This blackbody is design to enable simulation of target at temperatures from -10°C to +200°C located at cooled vacuum chambers. Blackbodies optimized for different temperature ranges working in both cooled or non-cooled vacuum chambers can be offered, too.

Comparison of blackbodies offered by Inframet

Blackbody code Temperature range Emitter area
TCB 0°C to +100°C typical
-5°C to +180°C extended
from 50x50mm
to 500x500mm
DAP 0°C to +100°C typical
-40°C to +120°C extended
from 50x50mm
to 300x300mm
BLIQ -40°C to +100°C typical
-40°C to +170°C extended
from 100x100m
to 500x500mm
MTB 30°C to +600°C typical
50°C to +800°C extended
from 50x50mm
to 500x500mm
HTB 50°C to +1050°C typical
50°C to +1200°C extended
25 to 50 mm diameter
UHT 400°C to +1500°C 38 mm typical
up to 50mm - option
VSB -10°C to +200°C (at cooled vacuum chambers) from 50x50mm to 150x150mm
MAB +5°C to +70°C (typical range)
-30°C to +140°C (expanded range)
from 150x150mm to 1000x1000mm