Document ID: chunk:federal_register_of_legislation:F2023C00161:front:0:p7
Version: federal_register_of_legislation:F2023C00161
Segment Type: other
Provision Reference: 
Character Range: 18475–20214

white light, the calorimetric characteristics, expressed in CIE chromaticity coordinates, shall lie within the limits given on the relevant data sheet which are to be within the area formed by the following limits:

Towards blue    x > 0.310

Towards yellow  x < 0.500

Towards green   y < 0.150 + 0.640x

Towards green   y < 0.440

Towards purple  y > 0.050 + 0.750x

Towards red     y > 0.382

       3.9.3. In case of yellow light, the calorimetric characteristics shall lie within the area formed by the following limits:

Towards red             y > 0.138 + 0.580 x

Towards green           y < 1.29 x - 0.100

Towards white           y > -x + 0.940

                        and y > 0.440

Towards spectral value  y < -x + 0.992

       3.9.4. The colour shall be measured according to the conditions specified in annex 4, paragraph 10.

       3.9.5. The minimum red content of the light of a gas-discharge light source emitting white light shall be such that:

       where:

       Ee(lambda) [w] is the spectral distribution of the irradiance;

       v(lambda) [l] is the spectral luminous efficiency;

       (l) [nm]  is the wave length.

       This value shall be calculated using intervals of one nanometre.

       3.10. UV-radiation

       The UV-radiation of the gas-discharge light source shall be such that:

       where:

       s(l) [l]  is the spectral weighting function;

       km = 683 [lm/W] is the photometric radiation equivalent;

       (For definitions of the other symbols see paragraph 3.9.5. above).

       This value shall be calculated using intervals of one nanometre.

       The UV - radiation shall be weighted according to the values as indicated in the following table:

lambda  s(lambda)