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),
  • BNUC blackbody sets for two point NUC  of thermal imagers,
  • BMED blackbodies  (reference medical blackbodies for fever screening thermographs)
  • 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

TCB blackbodies are differential temperature, area blackbodies (thermoelectrically controlled) of temperature regulated from 0C to +100C (option from -40C up to +150C). 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  VANTA Black-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 VANTA Black-S  without damaging the coating.  Blackbodies with typical coating of 0.98 emissivity are recommended.

BMED reference medical blackbody BNUC-TCB+BAP-6D  blackbody set

 

BMED blackbody is a specialized blackbody optimized for accurate simulation of human body and be used as a part of fever screening thermographs.In detail, parameters of BMED blackbody are at level much over requirements of IEC 80601-2-59 standard is situation when significant portion of medical blackbodies offered on the market do not fulfil requirements of this standard.  

There are many low cost blackbodies offered on international market that can be used potentially for two point NUC applications. However, due to significant and specular reflectivity, noticeable thermal uniformity and temporal stability, and not ability to work in temperature chambers these blackbodies are not suitable for professional applications. Inframet offers BNUC series  sets of blackbodies  optimized for professional two point NUC applications.  

BLIQ blackbodies MTB blackbodies

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

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 50C to 600C. Emitter area can vary from 50x50 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 100C up to 1200C. 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 1500C. Due to a special design of the cavity, UHT blackbody offers high emissivity in exceptionally wide spectral band from about 1 m to 3000 m. 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 -10C to +200C 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 0C to +100C typical
-40C to +200C optional
from 50x50mm
to 500x500mm
DAP 0C to +100C typical
-40C to +120C extended
from 50x50mm
to 300x300mm
BLIQ -40C to +100C typical
-40C to +170C extended
from 100x100m
to 500x500mm
MTB 30C to +600C typical
50C to +800C extended
from 50x50mm
to 500x500mm
HTB 50C to +1050C typical
50C to +1200C extended
25 to 50 mm diameter
UHT 400C to +1500C 38 mm typical
up to 50mm - option
VSB -10C to +200C (at cooled vacuum chambers) from 50x50mm to 150x150mm
MAB +5C to +70C (typical range)
-30C to +140C (expanded range)
from 150x150mm to 1000x1000mm