ISR300-PSL Luminaire Blue Light Hazard Spectroradiometer

  • ISR300-PSL PSL Spectroradiometer
  • ISR300-PSL Example Measurement Set-up

CE marking of luminaires against the EU low voltage directive 2014/35/EU requires implementation of EN 60598-1 according to which blue light hazard should be assessed with reference to IEC TR 6278.

The ISR300-PSL offers the luminaire manufacturer the most reliable and accurate direct assessment of blue light hazard, devoid of overly conservative assessment results caused by employing an approach based on calculation and estimation. 

Core benefits


  • High accuracy telespectroradiometer
  • Direct determination of blue light radiance in 11mrad field of view
  • Calibrated spectral radiance standard traceable to PTB, Germany
  • Fully automated over USB 2.0 with BenWin+ spectral acquisition software
  • Software guidance, calculation and report generation with PSL Wizard application


  • IEC TR 62778, “Application of IEC 62471 for the assessment of blue light hazard to light sources and luminaires”
  • EN 60598-1:2015, "Luminaires - Part 1: General requirements and tests"
  • IEC 60598-1:2014, "Luminaires - Part 1: General requirements and tests"
  • IEC 62471:2006, "Photobiological safety of lamps and lamp systems"
  • EU Low Voltage Directive, 2014/35/EU
  • LEDs Magazine, 2015, "Risk group determination characterizes photobiological safety in LED lighting"
  • IECEE IEC TR 62778:2014 page
  • CIE TN 002:2014, Relating Photochemical and Photobiological Quantities to Photometric Quantities

Reported Parameters

  • Spatially-averaged spectral radiance
  • Spatially-averaged blue light radiance
  • Threshold illuminance, Ethr
  • Threshold distance, dthr 


Spectral range of operation300-780 nm
Spectral data interval5 nm
Spectral bandwidth (FWHM)5 nm
Wavelength accuracy± 0.3 nm
Wavelength reproducibility± 0.05 nm
Stray light rejection at 2.5 FWHM10-4
Photo-detectorsMulti-alkali PMT and Silicon photodiode
Photo-current measurementDual-channel six decade picoammeter
Measured quantitySpectral radiance
Minimum measurement distance200 mm
Maximum measurement distance>10 m
Fields of view11, 5 and 1.7 mrad
Range of blue light radiance (typ.)10-100000

System requirements

Bench space0.5x 0.5 m not including working space for computer and luminaire under test
ComputerOS: Windows 7 or newer (32-/64-bit)
Minimum hard disk space: approx. 100MB
Minimum RAM: 2GB
1 x USB 2.0 ports
Power2 x 110/220V AC mains sockets, 400VA total

Mechanical & Interface

Software controlBenwin+ spectral acquisition software
PSL Wizard measurement guidance, calculation and reporting application
InterfaceUSB 2.0

ISR300-PSL Example RG1 Measurement Data
ISR300-PSL Example RG1 Measurement Data

ISR300-PSL Example Dthr Measurement Data
ISR300-PSL Example Dthr Measurement Data

Ordering information

ISR300_PSL_0003ISR300-PSL Luminaire Blue Light Hazard Spectroradiometer

Software Control

Measurements with the ISR300-PSL are fully-automated using the BenWin+ spectral acquisition software whilst guidance and reporting is provided by the PSL Wizard. Key features include:

  • Control of the TEL310 telescope entrance optic
BenWin+ Tel310 Control
  •  Easy system calibration

BenWin+ System Configuration
  •  Quick and accurate luminaire blue light hazard measurement

BenWin+ Source Measurement
  • Pass measurement results to PSL Wizard  for calculation and reporting

BenWin+ PSL Wizard

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