Illumination – Vehicle steering mechanism or element moves pivoted lamp or... – Tie rod element controlled
Patent
1989-09-22
1990-08-28
Husar, Stephen F.
Illumination
Vehicle steering mechanism or element moves pivoted lamp or...
Tie rod element controlled
362305, 362343, 362346, B60Q 100
Patent
active
049530631
ABSTRACT:
Disclosed herein is a vehicular headlamp, which comprises a compound light reflector having a concave light reflecting surface which consists of upper, lower, left and right triangular parts which are radially arranged about a given portion of the reflector. The upper and lower parts have a substantially common focus and are so arranged that when light rays are emitted from the position of the common focus, the upper and lower parts reflect the light rays forward to form a horizontal focal line before the common focus. Each of the left and right parts is so shaped and arranged that when cut by a horizontal plane, it shows an elliptic line along the cut edge, and when cut by a vertical plane, it shows a parabolic line along the cut edge. The upper, lower, left and right parts are so arranged as to have their focuses positioned at generally same position. A light source is positioned at the common focus, and a converging lens is positioned in front of the horizontal focal line and arranged in such a manner that a focus of the converging lens is positioned in the vicinity of the horizontal focal line. If desired, a shading plate may be employed. In this case, the shading plate is arranged in the vicinity of the horizontal focal line.
REFERENCES:
patent: 4697225 (1987-09-01), Lindae et al.
patent: 4755919 (1988-07-01), Lindae et al.
patent: 4772987 (1988-09-01), Kretschmer et al.
patent: 4879636 (1989-11-01), Yamagishi et al.
Husar Stephen F.
Koito Manufacturing Co. Ltd.
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