Illumination – Vehicle steering mechanism or element moves pivoted lamp or... – Tie rod element controlled
Patent
1989-05-08
1990-09-25
Husar, Stephen F.
Illumination
Vehicle steering mechanism or element moves pivoted lamp or...
Tie rod element controlled
362304, 362305, 362268, 362346, B60Q 104
Patent
active
049597574
ABSTRACT:
The automotive lamp assembly according to the present invention comprises a divergent-type concave mirror formed by a central reflecting area in which the optical axis lies and peripheral reflecting areas continuously extending rightward and leftward from the central reflecting area, and a lamp bulb disposed on the optical axis of the concave mirror. Either of the central and peripheral reflecting areas is formed as a first reflecting curved surface composed of a part of a paraboloid of revolution to reflect the incident rays of light from the lamp bulb in directions parallel to the optical axis, and the other is formed as a second reflecting curved surface to reflect horizontally the rays of light from the lamp bulb in directions divergent from the optical axis depending upon the distance from the vertical plane in which the optical axis lies and also reflect vertically the rays of light in directions parallel to each other and to the horizontal plane in which the optical axis lies. The first reflecting curved surface defines a central hot zone in the light distribution pattern, and the second reflecting curved surface defines middle and low illuminance zones extending rightward and leftward from the center of the light distribution pattern. Therefore, the rays of light from the lamp bulb can be effectively utilized and a desired light distribution pattern can be freely obtained.
REFERENCES:
patent: 3492474 (1970-01-01), Yamaguchi et al.
patent: 4545000 (1985-10-01), Fraley et al.
patent: 4704661 (1987-11-01), Kosmatka
patent: 4825344 (1989-04-01), Ichihara et al.
Husar Stephen F.
Ichikoh Industries Ltd.
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