Vehicle lamp, a method of adjusting a vehicle lamp, and a vehicle with a vehicle lamp

摘要

The invention provides a lamp with adjustable beam cut-off, useful for e.g. vehicle headlamps. The lamp comprises a solid-state light source 1 and a reflector 2, as well as a movable beam limiter 3. To adjust the cut-off, the beam limiter 3 may be moved by an actuator 4. An advantage is that the beam limiter 3 reflects incident light into the emitted beam instead of absorbing it, which increases efficiency. Furthermore, because the reflector 2 and also the beam limiter 3 may be positioned very close to the light source, which may be a LED or a laser diode, they may be flat and very small. Both circumstances ensure that the beam cut-off may be adjusted very quickly.

主权项

1. A vehicle lamp, comprising:
a solid-state light source; a circumferential collimating reflector, operably positioned with respect to the light source to form a light beam emanating from the light source; an adjustable beam limiter within the circumferential collimating reflector, operable to limit a solid angle of the light beam in at least one direction; an actuator to adjust the beam limiter; and a projection lens, positioned in a path of the light beam; wherein the adjustable beam limiter comprises a movable reflector, that is movable with respect to the circumferential collimating reflector and is positioned to reflect light from the light source into the light beam towards the projection lens.