Simplified method to assess the UV and blue light hazard of lamps

The UV-emission, as well as emission in the visible wavelength range, was measured for about 100 lamps of various types used for lighting. It can be concluded, that at the distance where the illuminance equals 500 1x, the UV- and Blue light ICNIRP/ IEC 62471/ACGIH exposure limits are not exceeded. By relating the UV emission with the visible emission, it was further possible to derive a factor for each lamp with which it is possible to measure the UV emission with a lux-meter, or to express the UV exposure limits in terms of permitted illuminance, for instance 4000 1x. Similarly, it was possible to derive such a transformation factor for the blue-light weighted emission and to express the blue-light hazard exposure limits in terms of illuminance. It is seen that this value is closely related to the color temperature of the lamp, and that for white lamps, the blue-light hazard exposure limit at the distance where the illuminance is 500 1x. Is not exceeded.