VIS Spectroradiometer

spectraval 1501


specbos 1501 is a precise and economic reference grade spectroradiometer for various applications including monitor and projector calibration and the measurement of different display types. It comes with the versatile radiometric software JETI LiVal, but can be used with different external programmes as CalMAN (spectracal), ChromaPure (Display Calibrations), LightSpace (LightIllusion), Argyll and HCFR (under preparation).

download datasheet

A diffusor for the Irradiance measurement can be ordered optional (ACC 032).



  • Fast measurement
  • Optimized operation routines
  • Internal target spot laser
  • Mechanical shutter for dark signal compensation
  • Automatic measurement in selectable time intervals
  • Increased measuring speed compared to specbos devices
  • USB powered or battery powered
  • Bluetooth interface included
  • Suited for HDR (luminance values up to 150 000 cd/m² can be measured)
  • Economic price (ask for your quotation)

Additional features:

  • Luminance, Radiance
  • xy and u' v' coordinates
  • Dominant wavelength
  • Color purity
  • Correlated Color Temperature
  • Color Rendering Index
  • Circadian metrics, PAR
It is possible to implement the instrument directly into customer specific applications via USB or Bluetooth by the following ways: 
  • Radiometric DLLs (Windows applications)
  • Serial commands (SCPI compatible syntax) (Windows and Linux applications)



Optical Parameters
   Spectral range    380 nm - 780 nm
   Optical resolution (FWHM)    4.5 nm
   Calculated wavelength step    1 nm
   Digital electronic resolution    16 Bit ADC
   Viewing angle    1.8°
   Measuring distance / diameter    20 cm - Ø 6 mm; 100 cm - Ø 31 mm
   Measuring values    Spectral radiance    
   Total luminance/ total radiance
   Chromaticity coordinates x , y ; u', v'
   Correlated Color Temperature, color purity
   Color Rendering Index, RGB
   Circadian metrics, Photosynthetically Active Radiation
Measuring ranges and accuracies
   Measuring range luminance    0.1 - 150 000 cd/m² (illuminant A)
   0.1 - 100 000cd/m² (typical white LED)
   Luminance accuracy    ± 2 % (@ 100 cd/m² and illuminant A)
   Luminance reproducibility    ± 1 %
   Chromaticity accuracy    ± 0.002 x , y (@ illuminant A)
   Color reproducibility    ± 0.0005 x , y
   CCT reproducibility    ± 20 K (@ illuminant A)
   Wavelength accuracy    ± 0.5 nm
Other technical data
   Dispersive element    Imaging grating (flat field)
   Light receiving element    CCD array 2048 pixel (binned)
   Power supply    Battery and USB powered
   PC interface    USB 2.0 fullspeed, Bluetooth, LAN (optional)
   Dimensions (drawing)    140 mm * 80 mm * 70 mm
   Weight    400 g
   Operating conditions    Temperature 10 - 40 °C
   Humidity < 85 % relative humidity at 35 °C

    All inclusive accessories packet
   PC software JETI LiVal 
   Operating instructions and firmware commands (digital)
   USB cable, Tripod, Transport box, Trigger connector
   Calibration    NIST traceable
   Recommended recalibration interval    1 year