Document ID: chunk:federal_register_of_legislation:F2023C00165:reg:6v:p19
Version: federal_register_of_legislation:F2023C00165
Segment Type: reg
Provision Reference: reg 6V (pt 19/19)
Character Range: 182088–183518

bulb circumference within the angles gamma1 and gamma 2.
    7/ The obscuration shall extend at least to angle gamma 3 and shall extend at least to the cylindrical part of the bulb on the whole bulb top circumference.
    8/ The internal design of the lamp shall be such that stray light images and reflections are only located above the filament itself seen from the horizontal direction. (View (1) as indicated in fugure 1, sheet H8/1).
    No metal parts other than filament turns shall be located in the shaded area as seen in figure 4.
    9/ The offset of the filament with respect to the reference axis is measured only in viewing directions (1) and (2) as shown in figure 1 on sheet H 8/1.
    The points to be measured are those where the projection of the outside of the end turns nearest to or furthest from the reference plane crosses the filament axis.
    10/ Offset of filament in relation to bulb axis measured in two planes parallel to the reference plane where the projection of the outside of the end turns nearest to or furthest from the reference plane crosses the filament axis.
CATEGORY H8

Sheet H8/3

DIMENSIONS in mm                                                     Filament lamps of                                                      Standard
                                                                     normal production                                                      filament lamp