Integrated solution for blue light hazard measurement

Optical radiation measurement

Artificial and natural optical radiation sources, including light sources, can emit optical radiation from outside the visible spectrum – from the ultraviolet and infrared range, which can be the source of serious photobiological hazards to human eyes and skin. Particularly ultraviolet radiation is the main source of photobiological hazards but exposure to visible (especially blue light) and infrared radiation can also be harmful, when certain limits have been exceeded.

Compliance to IEC 62471 and IEC 14255

International standards and legal documents (EN/IEC 14255 and EN/IEC 62471) put an obligation on lighting equipment manufacturers to inform their users about the photobiological risks connected with using their products. This information is especially relevant to employers who are obliged to follow the legal regulations connected with light quality in a work place.
To support lighting manufacturers and photometric laboratories in the assessment of risk groups in accordance with international standards, GL Optic delivers a portable, laboratory grade instrument system which simplifies this complex measurement tasks.

Risk group assessment

This blue light hazard measurement instrument system supports the operator during the complete measurement process to obtain dependable data and immediately present results which help to declare the risk group for LED and other lighting products: RG 0 – risk free group all the way to RG 3 – high risk group.

Faster and easier

Blue light hazard measurement is a complex metrological task and requires specialized instrumentation. We have created a system which is easy-to-use and allows for faster LED product tests and measurements. Start measuring LED products on your own and become independent from external photometric laboratory services.

Lab quality results

The heart of the system is spectrally calibrated, high resolution spectroradiometer GL SPECTIS 5.0. Dedicate optical probes for blue light irradiance (Eb) and blue light radiance (Lb) are available to measure skin and eye safety. Factory calibration includes nonlinearity, wavelength, stray light rejection and absolute spectral calibration in extended range 200-800 nm.

Who is our solution for?

  • Lamp manufacturers labs to include evaluation of blue light hazards in standards compliance testing procedures
  • Photometric laboratories which want to extend their services with photobiological safety measurement system
  • Health and Safety professionals and scientists who have a need for optical radiation measurement outside laboratory such as onsite risk evaluation of industrial processes

What can you measure?

Assessment of photobiological hazards generated by optical radiation emitted by lamps is a complex metrological problem, as it is necessary to perform spectroradiometric measurements and the measurement of effective quantities in a broad spectral range, which requires specialist calibrated measurement equipment. During tests of lighting equipment which are connected with photobiological safety – irradiance, effective irradiance and effective radiance must be measured to be able to identify all the hazards to eyes and skin.

Blue light hazard measurement in range 300 – 700 nm

For this application GL Optic offers a compact laboratory spectrometer – GL SPECTIS 5.0 Touch. This a specially calibrated instrument brings accurate data from an extended visual spectral range of 200 – 1050 nm, where the most dangerous blue light is present between 300 and 700 nm. Our novel Blue Light Hazard Wizard is built into our Spectrosoft Analysis software to guide the operator through a step-by-step measurement procedure to obtain the risk group classification.

Effective values

GL SPECTROSOFT is a dedicated software for GL SPECTIS spectrometers which calculates: effective irradiance values EB, EBK, ES, EUVA, EUV, EIR Eskin and effective radiance values like LB, LIRA, LVISIRA. GL SPECTROSOFT not only calculates and presents data in a clear to interpret way (charts/tables) but also generates RTF reports. Options for calculations concerning Photobiological Safety are available under the LAB license or Spectrosoft PRO licence with the Photobiological Safety Add-on.

Radiance and irradiance

For irradiance measurements we offer Opti Probe 5.1.50 irradiance/illuminance. When using this probe in connection with our spectroradiometer, the effective quantities are calculated by GL Spectrosoft from irradiance values. This optical probe is using silica glass diffuser and high-quality quartz glass fiber optics which is very desirable due to its high precision and transmission properties.
For radiance measurements we recommend a specially designed telescope Radiance Telescope which is an optical probe conforming the requirement of the IEC standard in regards to the steradian / solid angle resolution and extended spectral range transmittance.
GL Optic spectrometers and accessories always come to a client spectrally calibrated which gives guarantee of their accuracy and high quality performance. The above described instruments meet the requirements for photobiological safety. Contact us for more information or read more in our articles section.

GL PSM System has been nominated to the technology award during the 2017 LED Professional Symposium in Bregenz, Austria

GL Optic has announced the new revolutionary GL PSM System 200 – 800 nm. This solution is designed to perform measurements and risk assessments according to standards: IEC EN 62471:2008 (Photobiological safety of lamps and lamp systems) and IEC EN 14255 (Measurement and assessment of personal exposures to incoherent optical radiation). The system includes hardware components which are: a high-resolution factory calibrated laboratory grade spectrometer GL SPECTIS 5.0 TOUCH (UV-VIS) 200 – 800 nm, a specially designed Irradiance Probe and Radiance Telescope that recreates the properties of the human eye according to the above-mentioned standards.

Build your own set

The products below can be setup for blue light hazard measurement applications for testing in accordance with IEC 62471 and IEC 14255

GL SPECTIS 5.0 Touch laboratory grade spectroradiometer


Laboratory grade, self-contained GL SPECTIS 5.0 Touch smart spectrometer

  • Includes factory calibration in extended range from 200-800 nm
  • Ready for connection to dedicated optical probes or accessories
  • Use as a standalone device or connected with a PC


Cosine corrected optical probe for irradiance measurement.

  • Class A cosine correction for lab accuracy spectral irradiance
  • Extended spectral sensitivity thanks to silica glass diffuser
  • Fiber optic with precise adapter connection to spectroradiometer
*Factory calibration included

GL Radiance Telescope

Dedicated optical probe for spectral radiance measurement 300-1400nm.

  • High quality optical components for UV VIS NIR measurements
  • Precisely designed optical system conforming to IEC standard requirements
  • Fiber optic with precise adapter connection to spectroradiometer
*Factory calibration included
GL SPECTROSOFT light measurement software


GL SPECTROSOFT M analysis tool for advanced users focusing on detailed spectral analysis.

  • Dedicated Blue Light Hazard Wizard for lamp classification
  • Calculation of effective values in compliance with IEC standards
  • Implemented effective spectral curves


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