Additional headlight for use on a motor vehicle in conjunction w

Details Additional headlight for use on a motor vehicle in conjunction w Additional headlight for use on a motor vehicle in conjunction w

1987-06-15

1989-06-20

Makay, Albert J.

Illumination

Light source and modifier

Including reflector

362 61, 362297, 362346, F21V 709

Patent

active

048414239

ABSTRACT:
A motor vehicle headlight suitable for emitting a light beam which is essentially complementary to a dipped beam having a cut-off so that together the two beams constitute a main beam, the headlight being of the type comprising an axial filament lamp (100), a reflector (200), and a closure glass (300), the headlight including the improvement whereby: the filament of the lamp emits freely in all directions thereabout; the reflector comprises two first sectors which are paraboloid in shape, which have a common focus (F.sub.O) situtated approximately in the middle (in the axial direction) of the filament, which are delimited by half-planes that are inclined on either side of a horizontal plane passing through the axis of the headlight in order to create a spot of light concentration in the vicinity of the headlight axis, and two other sectors which interconnect said first sectors and which are shaped such that the major part of each filament image produced thereby lies above a cutoff that substantially co-incides with the cutoff of the dipped beam; and certain zones of the closure glass include means for distributing the beam horizontally.

REFERENCES:
patent: 3062951 (1962-11-01), Falge
patent: 4428038 (1984-01-01), Rakitsch et al.
patent: 4530042 (1985-07-01), Cibie et al.
patent: 4612608 (1986-09-01), Peitz
Halliday et al., Fundamentals of Physics, .COPYRGT.1970, 1974, Wiley & Sons, p. 684.

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