Vehicle lamp with shaped envelope interior providing a light-tra

Details Vehicle lamp with shaped envelope interior providing a light-tra Vehicle lamp with shaped envelope interior providing a light-tra

1998-04-03

2000-07-25

Patel, Nimeshkumar D.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

313635, 313634, 362211, H01J 516

Patent

active

060939990

ABSTRACT:
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 45.degree. 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.

REFERENCES:
patent: 4412273 (1983-10-01), Helbig et al.
patent: 4622486 (1986-11-01), Endo
patent: 4623958 (1986-11-01), Van Der Lind et al.
patent: 4751421 (1988-06-01), Braun et al.
patent: 4812703 (1989-03-01), Kanematsu et al.
patent: 5313135 (1994-05-01), Fletcher
patent: 5734227 (1998-03-01), Gotoh

Affiliated with

Also associated with

Rating

Vehicle lamp with shaped envelope interior providing a light-tra does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vehicle lamp with shaped envelope interior providing a light-tra, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vehicle lamp with shaped envelope interior providing a light-tra will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1338677