IEC/EN 62471 Photobiological Safety Tests

Product Safety Tests

IEC/EN 62471 Photobiological Safety Tests

EUROLAB Laboratory performs accredited testing services according to EN/IEC 62471 standards for the photobiological safety requirements of lamps and lamp systems. This test method covers a guideline for evaluating the photobiological safety of lamps and lamp systems, including luminaires.

IEC/EN 62471 Photobiological Safety Tests

As lighting technology continues to develop rapidly, the demand for LED lighting products in international markets is also increasing, creating significant business opportunities for manufacturers. With these developments, before the manufacturers open to new export markets; First, they are expected to pay due attention to identify valid and mandatory product safety certification requirements for their target markets.

The safety requirement that the IEC/EN 62471 standard draws attention to; Photobiological hazards and exposure to ultraviolet wavelengths (100-400 mm) can be a concern for user health. Europe has published a standard in order to address these concerns arising from the implementation of the EN 62471 standard. The USA and Canada continue to actively research and evaluate possible health effects.

Our LED Photobiological Radiation Safety test laboratory also has CIE S009, IEC/TR 62778, IEC/EN 60598 Annex P, IEC/EN 60432, IEC/EN 60335, and 2009/125/EC. It is also capable of measuring in IEC/EN 62471 GB/T 20145, GB 7000.1 standards, The hazard exposure level of optical radiation can be from 200nm to 3000nm. It is based on the measurement of spectral radiation and spectral radiation in the specified measurement geometry with respect to the exposure time.

EUROLAB is specialized for optical radiation hazard exposure level measurement in IEC 62471.

  • Exposure to actinic UV hazard for skin and eye (weighted radiation from 200 nm to 400 nm)
  • Near-UV hazard exposure to the eye (brightness from 315 nm to 400 nm)
  • Exposure to retinal blue light hazard (weighted brightness from 300 nm to 700 nm)
  • Exposure to Retinal Blue light hazard (weighted luminous intensity, 300-700 nm) - small source
  • Retinal thermal hazard exposure (weighted brightness from 380nm to 1400nm)
  • Exposure to retinal thermal hazard (weighted luminosity; 780-1400nm) - weak visual stimulus
  • Exposure to the danger of infrared radiation for the eye (brightness from 780 nm to 3000 nm)
  • Thermal hazard exposure to the skin (light intensity from 380nm to 3000nm)

Photobiological Safety

When the wavelength spectrum of lighting fixtures (those that emit white light and/or narrow band radiation) is examined, it is observed that the fixtures can radiate in the pre-violet and/or infrared region, albeit in a very small amount. The light emitted in the indicated area is known to cause damage to the eye (on the cornea/retina) and skin. LEDs used in lighting fixtures must be certified according to standards, especially that they do not photobiologically damage the eye and skin layer. According to EN 62471, the European Union's standard in this regard, products radiating between 200nm and 3000nm must be subjected to the tests within the scope of this standard.

Risk Classes

According to EN 62471 Paragraph 6.1, risk groups (for blue light) are defined as follows:

Risk Group 0 (Exceptional Group): Does not cause any photobiological hazard.
Risk Group 1 (Low Risk): The basic philosophy for this classification is that the lamp presents no hazard due to normal behavioral limitations in exposure.
Risk Group 2 (Medium Risk): The basic philosophy for this classification is that the lamp presents no hazard due to thermal degradation or the risk avoidance response to very bright light sources.
Risk Group 3 (High Risk): The basic philosophy for this classification is that for sudden or short exposure, the lamp can present a regular hazard.

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