VS - Lighting Systems - Lighting - 998542

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Light source positioning

Whatever the type of source, the position of the light source is key to headlamp performance.

Illumination on the road is the projection of a light source via an optical device, hence the position of the light source can make a huge difference on the final photometric results.

If we take the particular case of a filament, its precise positioning inside the lamps is the first mandatory feature to comply with. The filament size and positioning versus the lamp axis and lamp reference plane are both specified in R37 and R99 regulations.

Reference plane

Reference axis

Filament position

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