Vehicle head lamp

Details Vehicle head lamp Vehicle head lamp

1997-08-01

1999-12-14

O'Shea, Sandra

Illumination

Light source and modifier

Including reflector

362507, 362518, 362346, F21V 700

Patent

active

060008164

ABSTRACT:
A head lamp in which the sub-lamp luminous intensity distribution pattern is designed to control light from a discharge bulb by a plurality of reflective surface elements constituting the reflective surface of a reflector even in such a state that the reflector has been subjected to aiming adjustment. A reflective surface element (22As1) which is positioned in the outermost side portion out of a plurality of reflective surface elements (22As) constituting the horizontal cut-line forming area (22A) of a reflector reflective surface (22) has a concave horizontal sectional shape and rays of the light reflected from the reflective surface element (22As1) are made to horizontally cross each other so as to form a luminous intensity distribution pattern (PA1). Thus, the reflector is aimed to the left and with the luminous intensity distribution pattern (PA1) as a leftover luminous intensity distribution pattern on a oblique cut line side with respect to the original luminous intensity distribution pattern when the light reflected from the left-hand end portion of the reflective surface element (22As1) is shaded by an extension (28), part of the hot zone (HZ) of a sublamp luminous intensity distribution pattern (P) is formed therewith.

REFERENCES:
patent: 4704661 (1987-11-01), Kosmatka
patent: 5171082 (1992-12-01), Watanabe
patent: 5406464 (1995-04-01), Saito
patent: 5416671 (1995-05-01), Uchida
patent: 5695276 (1997-12-01), Tatsukawa

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