Document ID: chunk:federal_register_of_legislation:F2023C00165:front:0:p9
Version: federal_register_of_legislation:F2023C00165
Segment Type: other
Provision Reference: 
Character Range: 23192–26048

the method specified in annex 5.

3.7. The UV radiation of a halogen filament lamp shall be such that:

where: Ee (lamda) [W/nm] is the spectral distribution of the radiant flux; V (lamda) [l] is the spectral luminous efficiency;

              lamda [nm] is the wave length.

        This value shall be calculated using intervals of five nanometre.

3.8. Observation concerning selective-yellow colour

An approval of a filament lamp type under this Regulation may be granted, pursuant to paragraph 3.6 above, for a filament lamp with a colourless as well as a selective-yellow bulb or outer bulb; article 3 of the Agreement to which this Regulation is annexed shall not prevent the Contracting Parties from prohibiting, on vehicles registered by them, lamps emitting either white or selective-yellow light.

3.9. Check on optical quality

(Applies solely to filament lamps with two filaments for headlamps emitting an asymmetrical passing beam).
3.9.1. This check of optical quality shall be carried out at a voltage such that the measuring luminous flux is obtained; the specifications of paragraph 3.4.6. are to be observed accordingly.

3.9.2. For 12V filament lamps emitting white light:

The sample which most nearly conforms to the requirements laid down for the standard filament lamp shall be tested in a standard headlamp as specified in paragraph 3.8.5. and it shall be verified whether the assembly comprising the aforesaid headlamp and the filament lamp being tested meets the light-distribution requirements laid down for the passing beam in the relevant Regulation.
3.9.3. For 6V and 24V filament lamps emitting white light: The sample which most nearly conforms to the nominal dimension values shall be tested in a
standard headlamp as specified in paragraph 3.8.5. and it shall be verified whether the assembly comprising the aforesaid headlamp and the filament lamp being tested meets the light-distribution requirements laid down for the passing-beam in the relevant Regulation. Deviations not exceeding 10% of the minimum values will be acceptable.
3.9.4. Filament lamps having a selective-yellow bulb or outer bulb shall be tested in the same manner as described in paragraphs 3.8.2. and 3.8.3. in a standard headlamp as specified in paragraph 3.8.5. to ensure that the illumination complies with at least 85%, for 12V filament lamps, and at least 77%, for 6V and 24V filament lamps, with the minimum values of the light-distribution requirements laid down for the passing beam in the relevant Regulation. The maximum illumination limits remain unchanged.
In the case of a filament lamp having a selective-yellow bulb this test shall be left out if the approval is also given to the same type of filament lamp emitting white light.

3.9.5. A headlamp shall be deemed to be a standard headlamp if:

3.9.5.1. it satisfies the pertinent