Electric lamp and discharge devices – With optical device or special ray transmissive envelope – Light valve or obscuring means
Patent
1974-05-01
1976-09-07
Grimm, Siegfried H.
Electric lamp and discharge devices
With optical device or special ray transmissive envelope
Light valve or obscuring means
240 41SB, 240 41SC, 313239, 313315, 313326, H01K 126, H01K 132, H01K 702
Patent
active
039796221
ABSTRACT:
The invention relates to a headlight as well as an incandescent lamp which is suitable for being arranged in a reflector by means of which an anti-dazzle beam is produced. For that purpose the headlight and the incandescent lamp comprise a filament and a cap of which two edges extend along the filament. The distance from at least one of the edges to the longitudinal axis of the filament at the area of the end of the filament which is remote from the rear end of the reflector is larger than in any other place along the axis of the filament.
REFERENCES:
patent: 1793398 (1931-02-01), Hamberger
patent: 2020130 (1935-11-01), Astor
patent: 2912610 (1959-11-01), Verbeek
patent: 3569693 (1971-03-01), Lindae et al.
Iedema Harry William Jelle
Rijnders Johannes
Grimm Siegfried H.
Trifari Frank R.
U.S. Philips Corporation
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