Structure of headlamps for vehicles

Details Structure of headlamps for vehicles Structure of headlamps for vehicles

1989-05-05

1990-11-20

Price, Carl D.

Illumination

Light source and modifier

Including reflector

362 61, 362348, 362339, 362299, F21M 300, F21V 700

Patent

active

049723073

ABSTRACT:
A structure is provided for headlamps for vehicles, having a light source, a reflector, and a front lens in which the lens is slanted with respect to a vertical direction of a vehicle body, a rear surface of the lens is formed with a prism zone for forming a light diffusion zone on a light distribution pattern of a given screen and another prism zone for forming a hot zone on the distribution pattern, and the reflector is formed with a first reflecting surface which corresponds optically to the light diffusion zone forming prism zone and diffuses light beams emitted from the light source in a horizontal cross section with respect to an optical axis of the light source and reflects the light beams of the light source substantially in parallel to the optical axis in a vertical cross section and with a remaining reflecting surface substantially in the form of a paraboloid of revolution. Consequently, both ends of the light distribution pattern in the horizontal direction neither droop nor rise.

REFERENCES:
patent: 1686543 (1928-10-01), Wood
patent: 3857029 (1974-12-01), Krinke
patent: 4276584 (1981-06-01), Ichikawa
patent: 4305119 (1981-12-01), Draper et al.
patent: 4523262 (1985-06-01), Shinkai
patent: 4530042 (1985-07-01), Cibie et al.
patent: 4607318 (1986-08-01), Lindae et al.
patent: 4608623 (1986-08-01), Stephano

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