VIS Spectroradiometer

spectraval 1511


spectraval 1511 is a modern spectroradiometer for the VIS wavelength range, which can be used stand alone or with PC/ laptop. It is constructed in the same way as spectraval 1501, but includes a display. All other functions are similar (download datasheet).

spectraval 1511 can be used for spectroradiometric measurements in the field without additional computer or via Bluetooth/ USB connection with different PC programs like the included universal radiometric software JETI LiVal or other programs as CalMAN (spectracal), ChromaPure (Display Calibrations), LightSpace (LightIllusion), Argyll and HCFR (under preparation).

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

  scv1511 stativ


  • Internal target spot laser
  • Piezo-electric shutter for dark signal compensation
  • Automatic measurement in selectable time intervals
  • USB powered or battery powered
  • Data storage on SD card

Measuring values:

  • Luminance, Radiance
  • xy and u' v' coordinates
  • Dominant wavelength
  • Color purity
  • Correlated Color Temperature
  • Color Rendering Index
  • Circadian metrics, PAR
Examples for applications are the following: 
  • Calibration of studio monitors  info
  • Measurement of fluorescence and UV lamps
  • Measurement of extended luminaries like OLEDs
Additional features: 
  • Pass / fail decisions
  • Ranking function (up to 16 ranks)
  • Spectral operations
  • Data export in csv and xls files 
messung spektrum  messung xy diagramm
Screenshots of the device software
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    0.2 - 180 000 cd/m² (illuminant A)
   0.2 - 140 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 (@ illuminant A)
   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
   Dimensions (drawing)    140 mm * 115 mm * 70 mm
   Weight    500 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,
   Bluetooth stick, Battery charger, Calibration certificate
   Calibration    NIST traceable
   Recommended recalibration interval    1 year