Invention Grant
US08944650B2 Vehicle lamp, a method of adjusting a vehicle lamp, and a vehicle with a vehicle lamp 有权
车灯,调节车灯的方法以及车辆灯的车辆

Vehicle lamp, a method of adjusting a vehicle lamp, and a vehicle with a vehicle lamp
Abstract:
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.
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