Document ID: chunk:federal_register_of_legislation:F2023C00159:body:0:p9
Version: federal_register_of_legislation:F2023C00159
Segment Type: other
Provision Reference: 
Character Range: 22878–25929

a degree from the direction of observation.

       3. If visual examination of a light appears to reveal substantial local variations of intensity, a check shall be made to ensure that, outside the axes, no intensity measured within the rhombus defined by the extreme directions of measurement is below 75 cd (see diagram below).

       4. Photometric measurement of lamps equipped with several light sources The photometric performance shall be checked:

       4.1. For non-replaceable light sources (filament lamps and other):

       with the light sources present in the lamp, in accordance with paragraph 7.1. of this Regulation.

       4.2.  For replaceable filament lamps:

       when equipped with mass production filament lamps at 6.75 V, 13.5 V or 28.0 V the luminous intensity values produced shall lie between the maximum limit given in this Regulation  and  the  minimum  limit  of  this  Regulation  increased  according  to  the permissible deviation of the luminous flux permitted for the type of filament lamp chosen, as stated in Regulation No. 37 for production filament lamps; alternatively, a standard filament lamp may be used in turn, in each of the individual positions, operated at its reference flux, the individual measurements in each position being added together.

Annex 4

MINIMUM REQUIREMENTS FOR CONFORMITY OF PRODUCTION CONTROL PROCEDURES

       1. GENERAL

       1.1 The conformity requirements shall be considered satisfied from a mechanical and geometric standpoint, if the differences do not exceed inevitable manufacturing deviations within the requirements of this Regulation.

       1.2. With respect to photometric performances, the conformity of mass-produced lamps shall not be contested if, when testing photometric performances of any lamp chosen at random and equipped with a standard filament lamp, or when the lamps are equipped with   non-replaceable   light   sources   (filament   lamps   or   other),   and   when   all measurements are made at 6.75 V, 13.5 V or 28.0 V respectively:

       1.2.1. No measured value deviates unfavourably by more than 20% from the values prescribed in this Regulation.

       1.2.2. If, in the case of a lamp equipped with a replaceable light source and if results of the test described above do not meet the requirements, tests on lamps shall be repeated using another standard filament lamp.

       1.3. The chromaticity coordinates shall be complied with when the lamp is equipped with a standard filament lamp, or for lamps equipped with non-replaceable light sources (filament lamps or other), when the colorimetric characteristics are verified with the light source present in the lamp.

       2. MINIMUM REQUIREMENTS FOR VERIFICATION OF CONFORMITY BY THE MANUFACTURER

       For each type of lamp the holder of the approval mark shall carry out at least the following tests, at appropriate intervals. The tests shall be carried out in accordance with the provisions of this Regulation.

       If any sampling shows non-conformity with regard to