Illumination – Vehicle steering mechanism or element moves pivoted lamp or... – Tie rod element controlled
Patent
1993-06-10
1994-04-19
Yeung, James C.
Illumination
Vehicle steering mechanism or element moves pivoted lamp or...
Tie rod element controlled
362297, 362305, 362346, B60Q 104
Patent
active
053051890
ABSTRACT:
A lighting device includes a cutout portion formed at the lower part of a reflective mirror corresponding to a part of the light beam reflected from the reflective mirror and shaded by a shading plate, a first reflective plane consisting of a left-hand reflective plane half and a right-hand reflective plane half for allowing a large part of the light beam emitted directly from the light source to converge in the vertical direction, and a second reflective plane disposed behind the first reflective plane with a vertical attitude for allowing a large part of the light beam reflected from the first reflective plane to be reflected again at the second reflective plane to converge in the vertical direction, to improve a light beam utilizing rate of a light source and light irradiating performances of a projector type lighting device, and moreover, increase a light irradiating intensity of the lighting device. To additionally increase the light irradiating intensity of the lighting device, it is desirable that a third reflective plane is disposed in the form of a concave parabolic surface at the foremost end part of a joint zone between the left-hand reflective plane half and the right-hand reflective plane half of the first reflective plane. It is also desirable that a lens having a certain amount of lens cut is disposed in the form of concave parabolic surface ahead of the first reflective plane and the second reflective plane.
REFERENCES:
patent: 3953063 (1990-08-01), Nino
patent: 4918580 (1990-04-01), Nino
patent: 4922389 (1990-05-01), Nino
patent: 4928214 (1990-05-01), Oyama
patent: 5249110 (1993-09-01), Russello et al.
Stanley Electric Co. Ltd.
Yeung James C.
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