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The LED EN62471 profile

One: the background of the standard

IEC/EN 62471 is to assess the purpose of optical radiation hazards associated with different light and light system, and fully replace standard IEC/EN60825 about LED products in the energy level, increase the light biological requirements, including radiation intensity and radiation intensity, etc., and according to the test data to hazard classification of products, including immunity level, low, medium, high hazard level. Which part of the European Union standard EN62471:2008 has started 2009.09.01 line of board, EN60825 will lapse in 2010.09.01 completely about the LED part.

IEC/EN60825 mainly tests of single wavelength of light energy calculations for IEC/EN62471 is mainly carried out on the wide range of light measurement, and integrated optical response time of eye and skin, point of view, to calculate sensitivity, etc

2: all applicable product in addition to the laser light and light system.

(a single wavelength laser is easy to test, ordinary light because the light and diffuse body, lens, auxiliary devices such as optical element and can be a wide band light source)

3: the wavelength range of the test

Wavelength at 200 nm to 3000 nm range of optical radiation

4: testing and object test parameters:

1. The irradiance (radiation flux area divided by the number of units, unit: W? M - 2)

2. The radial brightness (irradiance, divided by the view, can through the irradiance transformation) test object

(1) ultraviolet harm to skin and eyes (2) the eyes near ultraviolet harm (315 nm - 400 nm) 3. The retinal light damage. The retinal light damage (light) 5. The retina thermal hazard 6. Retinal thermal hazard faint visual stimuli (to) (780 nm - 1400 nm) 7. The eyes of the infrared radiation hazards (780 nm - 3000 nm) 8. Skin thermal hazard (380 nm - 3000 nm)

4: results of judgment

1. Continuous light: no danger; Class 1 dangerous (low risk); 2 kind of danger (crisis); Three kinds of risk (high risk)

2. The pulse modulation: 1. More than radiation limit according to the three kinds of danger; 2. No more than radiation limits of single pulse modulation according to the no dangerous risks; 3. No more than radiation limits of pulse modulation according to the continuous modulation classification method