Vehicle lamp with light-trapping dome

Details Vehicle lamp with light-trapping dome Vehicle lamp with light-trapping dome

B - Operations, Transporting

60

Q

B60Q 1/04 (2006.01) H01K 1/28 (2006.01) H01K 1/32 (2006.01)

Patent

CA 2235912

A lamp capsule includes a lamp envelope having a tubular portion and a dome closing one end of the tubular portion, a light source mounted in the lamp envelope on or near its central axis for emitting light when energized by electrical energy and a light attenuating coating over the dome. The dome has a shape that traps light emitted by the light source in the direction of the dome. The dome may be shaped such that a dome angle between a tangent to the interior surface of the dome and the central axis of the lamp envelope is 450 or less. The dome may be shaped as a hyperbolic surface of revolution. The lamp capsule is typically used in a vehicle headlamp and provides low glare.

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