Common use of TEST FOR STABILITY OF PHOTOMETRIC PERFORMANCE Clause in Contracts

TEST FOR STABILITY OF PHOTOMETRIC PERFORMANCE. 1.1. Clean headlamp The headlamp shall be operated for 12 hours as described in paragraph 1.1.1. and checked as prescribed in paragraph 1.1.2. 1.1.1. Test procedure1 The headlamp shall be operated for a period according to the specified time, so that: (a) In the case where only one lighting function (driving or passing-beam or front fog lamp) is to be approved, the corresponding filament and/or LED module(s) is (are) lit for the prescribed time2; (b) In the case of a headlamp with a passing-beam and one or more driving-beams or in the case of a headlamp with a passing-beam and a front fog lamp: 1 For the test schedule see Annex 8 to this Regulation. 2 When the tested headlamp includes signalling lamps, the latter shall be lit for the duration of the test, except for a daytime running lamp. In the case of a direction indicator lamp, it shall be lit in flashing mode with an on/ off time of approximately one to one. (i) The headlamp shall be subjected to the following cycle until the time specified is reached: 15 minutes, principal passing-beam filament or principal passing-beam LED module(s) lit; 5 minutes, all filaments and/or LED module(s) lit. (ii) If the applicant declares that the headlamp is to be used with only the passing-beam lit or only the driving-beam(s) lit3 at a time, the test shall be carried out in accordance with this condition, activating2 successively the passing-beam half of the time and the driving-beam(s) (simultaneously) for half the time specified in paragraph 1.1. above. (c) In the case of a headlamp with a front fog lamp and one or more driving-beams: (i) The headlamp shall be subjected to the following cycle until the time specified is reached: 15 minutes, front fog lamp lit; 5 minutes, all filaments and/or all LED modules lit. (ii) If the applicant declares that the headlamp is to be used with only the front fog lamp lit or only the driving-beam(s) lit3 at a time, the test shall be carried out in accordance with this condition, activating2 successively the front fog lamp half of the time and the driving-beam(s) (simultaneously) for half the time specified in paragraph 1.1. above. (d) In the case of a headlamp with a passing-beam, one or more driving- beams and a front fog lamp: (i) The headlamp shall be subjected to the following cycle until the time specified is reached: 15 minutes, principal passing-beam filament or principal passing-beam LED module(s) lit; 5 minutes, all filaments and/or all LED modules lit. (ii) If the applicant declares that the headlamp is to be used with only the passing-beam lit or only the driving-beam(s)3 lit at a time, the test shall be carried out in accordance with this condition, activating2 successively the principal passing-beam half of the time and the driving-beam(s) for half the time specified in paragraph 1.1. above, while the front fog lamp is subjected to a cycle of 15 minutes off and 5 minutes lit for half of the time and during the operation of the driving-beam; (iii) If the applicant declares that the headlamp is to be used with only the passing-beam lit or only the front fog lamp3 lit at a time, the test shall be carried out in accordance with this condition, activating2 successively the principal passing-beam half of the time and the front fog lamp for half of the time specified in paragraph 1.1. above, while the driving-beam(s) is(are) subjected to a cycle of 15 minutes off and 5 minutes lit 3 Should two or more filament light sources and/or LED module(s) be simultaneously lit when headlamp flashing is used, this shall not be considered as being normal use of the filament light sources and/or LED module(s). for half of the time and during the operation of the principal passing-beam; (iv) If the applicant declares that the headlamp is to be used with only the passing-beam lit or only the driving-beam(s)3 lit or only the front fog lamp3 lit at a time, the test shall be carried out in accordance with this condition, activating2 successively the principal passing-beam one third of the time, the driving- beam(s) one third of the time and the front fog lamp for one third of the time specified in paragraph 1.1. above. (e) In the case of a passing-beam designed to provide bend lighting with the addition of a filament light source and/or one or more LED module(s), this light source and/or LED module(s) shall be switched on for one minute, and switched off for nine minutes during the activation of the passing-beam only (see Annex 4 – Appendix 1). 1.1.1.2. Test voltage The voltage shall be applied to the terminals of the test sample as follows: (a) In case of replaceable filament light source(s) operated directly under vehicle voltage system conditions: The test shall be performed at 6.3 V, 13.2 V or 28.0 V as applicable except if the applicant specifies that the test sample may be used at a different voltage. In this case, the test shall be carried out with the filament light source operated at the highest voltage that can be used. (b) In case of replaceable gas discharge light source(s): The test voltage for the electronic light source control-gear is 13.2 ± 0.1 volts for 12 V vehicle voltage system, or otherwise specified in the application for approval. (c) In the case of non-replaceable light source operated directly under vehicle voltage system conditions: All measurements on lighting units equipped with non-replaceable light sources (filament light sources and/ or others) shall be made at 6.3 V, 13.2 V or 28.0 V or at other voltages according to the vehicle voltage system as specified by the applicant respectively. (d) In the case of light sources, replaceable or non-replaceable, being operated independently from vehicle supply voltage and fully controlled by the system, or, in the case of light sources supplied by a supply and operating device, the test voltages as specified above shall be applied to the input terminals of that device. The test laboratory may require from the manufacturer the supply and operating device or a special power supply needed to supply the light source(s). (e) LED module(s) shall be measured at 6.75 V, 13.2 V or 28.0 V respectively, if not otherwise specified within this Regulation. LED module(s) operated by an electronic light source control gear, shall be measured as specified by the applicant. (f) Where signalling lamps are grouped, combined or reciprocally incorporated into the test sample and operating at voltages other than the nominal rated voltages of 6 V, 12 V or 24 V respectively, the voltage shall be adjusted as declared by the manufacturer for the correct photometric functioning of that lamp. 1.1.2. Test results 1.1.2.1. Visual inspection Once the headlamp has been stabilized to the ambient temperature, the headlamp lens and the external lens, if any, shall be cleaned with a clean, damp cotton cloth. It shall then be inspected visually; no distortion, deformation, cracking or change in colour of either the headlamp lens or the external lens, if any, shall be noticeable.

TEST FOR STABILITY OF PHOTOMETRIC PERFORMANCE. The tests shall be carried out in a dry and still atmosphere at an ambient temperature of 23 °C ± 5 °C, the complete front fog lamp being mounted on a base representing the correct installation on the vehicle. 1.1. Clean headlamp The headlamp shall be operated for 12 hours as described in paragraph 1.1.1. and checked as prescribed in paragraph 1.1.2.front fog lamp 1.1.1. Test procedure1 procedure The headlamp front fog lamp shall be operated for a period according to the specified time, so thatas follows: (a) In 1.1.1.1. in the case where only one lighting function (driving or passing-beam or front fog lamp) is to be approved, the corresponding filament and/or LED module(s) light source is (are) lit for the prescribed time2time, 1/ 1.1.1.2. in the case of more than one lighting function (e.g. a headlamp with one or more driving beams and/or a front fog lamp): the headlamp shall be subjected to the following cycle until the prescribed time is reached: (a) 15 minutes, front fog lamp lit; (b) 5 minutes, all filaments lit. If the applicant declares that only one lighting function is to be used at a time (e.g. only the passing beam lit or only the driving beam(s) lit or only the front fog lamp lit 1/), the test shall be carried out in accordance with this condition, successively activating the front fog lamp half of the time and one of the other lighting functions for half the time specified in paragraph 1.1. 1.1.1.3. In the case of a headlamp front fog lamp with a passing-passing beam and one or more driving-beams or in the case lighting functions (one of a headlamp with a passing-beam and them is a front fog lamp: 1 For the test schedule see Annex 8 to this Regulation. 2 When the tested headlamp includes signalling lamps, the latter shall be lit for the duration of the test, except for a daytime running lamp. In the case of a direction indicator lamp, it shall be lit in flashing mode with an on/ off time of approximately one to one.): (ia) The headlamp the front fog lamp shall be subjected to the following cycle until the time specified is reached: : (i) 15 minutes, principal passing-beam filament or principal passing-beam LED module(slight source(s) lit; ; (ii) 5 minutes, all filaments and/or LED module(slight source(s) lit. (iib) If if the applicant declares that the headlamp front fog lamp is to be used with only the passing-passing beam lit or only the driving-beam(s) lit3 at a time, the test shall be carried out in accordance with this condition, activating2 successively the passing-beam half of the time and the driving-beam(s) (simultaneously) for half the time specified in paragraph 1.1. above. (c) In the case of a headlamp with a front fog lamp and one or more driving-beams: (i) The headlamp shall be subjected to the following cycle until the time specified is reached: 15 minutes, front fog lamp lit; 5 minutes, all filaments and/or all LED modules lit. (ii) If the applicant declares that the headlamp is to be used with only the front fog lamp lit or only the driving-beam(s) lit3 at a time, the test shall be carried out in accordance with this condition, activating2 successively the front fog lamp half of the time and the driving-beam(s) (simultaneously) for half the time specified in paragraph 1.1. above. (d) In the case of a headlamp with a passing-beam, one or more driving- beams and a front fog lamp: (i) The headlamp shall be subjected to the following cycle until the time specified is reached: 15 minutes, principal passing-beam filament or principal passing-beam LED module(s) lit; 5 minutes, all filaments and/or all LED modules lit. (ii) If the applicant declares that the headlamp is to be used with only the passing-beam lit or only the driving-beam(s)3 2/ lit at a time, the test shall be carried out in accordance with this condition, activating2 successively activating 3/ the principal passing-passing beam half of the time and the driving-beam(s) front fog lamp for half of the time specified in paragraph 1.11. 1. above, while the front fog lamp The driving beam(s) is (are) subjected to a cycle of 15 minutes off and 5 minutes lit for half of the time and during the operation of the driving-passing beam; (iiic) If if the applicant declares that the headlamp is to front fog lamp can be used with only the passing-passing beam or only the driving beam(s) 2/ lit or only the front fog lamp3 lamp 2/ lit at a time, the test shall be carried out in accordance with this condition, activating2 successively activating 2/ the principal passing-beam half of the time and the front fog lamp for half of the time specified in paragraph 1.1. above, while the driving-beam(s) is(are) subjected to a cycle of 15 minutes off and 5 minutes lit 3 Should two or more filament light sources and/or LED module(s) be simultaneously lit when headlamp flashing is used, this shall not be considered as being normal use of the filament light sources and/or LED module(s). for half of the time and during the operation of the principal passing-beam; (iv) If the applicant declares that the headlamp is to be used with only the passing-beam lit or only the driving-beam(s)3 lit or only the front fog lamp3 lit at a time, the test shall be carried out in accordance with this condition, activating2 successively the principal passing-passing beam one third of the time, the driving- driving beam(s) one third of the time and the front fog lamp for one third of the time specified in paragraph 1.1. above. (e) In the case of a passing-beam designed to provide bend lighting with the addition of a filament light source and/or one or more LED module(s), this light source and/or LED module(s) shall be switched on for one minute, and switched off for nine minutes during the activation of the passing-beam only (see Annex 4 – Appendix 1). 1.1.1.2. Test voltage The voltage shall be applied to the terminals of the test sample as follows: (a) In case of replaceable filament light source(s) operated directly under vehicle voltage system conditions: The test shall be performed at 6.3 V, 13.2 V or 28.0 V as applicable except if the applicant specifies that the test sample may be used at a different voltage. In this case, the test shall be carried out with the filament light source operated at the highest voltage that can be used. (b) In case of replaceable gas discharge light source(s): The test voltage for the electronic light source control-gear is 13.2 ± 0.1 volts for 12 V vehicle voltage system, or otherwise specified in the application for approval. (c) In the case of non-replaceable light source operated directly under vehicle voltage system conditions: All measurements on lighting units equipped with non-replaceable light sources (filament light sources and/ or others) shall be made at 6.3 V, 13.2 V or 28.0 V or at other voltages according to the vehicle voltage system as specified by the applicant respectively. (d) In the case of light sources, replaceable or non-replaceable, being operated independently from vehicle supply voltage and fully controlled by the system, or, in the case of light sources supplied by a supply and operating device, the test voltages as specified above shall be applied to the input terminals of that device. The test laboratory may require from the manufacturer the supply and operating device or a special power supply needed to supply the light source(s). (e) LED module(s) shall be measured at 6.75 V, 13.2 V or 28.0 V respectively, if not otherwise specified within this Regulation. LED module(s) operated by an electronic light source control gear, shall be measured as specified by the applicant. (f) Where signalling lamps are grouped, combined or reciprocally incorporated into the test sample and operating at voltages other than the nominal rated voltages of 6 V, 12 V or 24 V respectively, the voltage shall be adjusted as declared by the manufacturer for the correct photometric functioning of that lamp. 1.1.2. Test results 1.1.2.1. Visual inspection Once the headlamp has been stabilized to the ambient temperature, the headlamp lens and the external lens, if any, shall be cleaned with a clean, damp cotton cloth. It shall then be inspected visually; no distortion, deformation, cracking or change in colour of either the headlamp lens or the external lens, if any, shall be noticeable.