Lamp unit for forming a cut-off line and vehicular headlamp...

Details Lamp unit for forming a cut-off line and vehicular headlamp... Lamp unit for forming a cut-off line and vehicular headlamp...

2007-04-17

2007-04-17

Alavi, Ali (Department: 2875)

Illumination

Supported by vehicle structure

Light modifier

C362S538000, C362S545000

Reexamination Certificate

active

10940112

ABSTRACT:
A lamp unit for a vehicular headlamp includes a projection lens disposed on an optical axis extending in a vehicle longitudinal direction and a semiconductor light-emitting element having a light-emitting chip with a lower end edge formed linearly. The semiconductor light-emitting element is disposed in the rear of the projection lens facing forward so as to position the lower end edge24a1on the optical axis. The projection lens projects light from a point on the optical axis of the lower end edge within a vertical cross section as parallel light, and projects light from a point on the optical axis of the lower end edge within a horizontal cross section as diffused light.

REFERENCES:
patent: 6619825 (2003-09-01), Natsume
patent: 6819505 (2004-11-01), Cassarly et al.
patent: 6819506 (2004-11-01), Taylor et al.
patent: 6951416 (2005-10-01), Sazuka et al.
patent: 6960007 (2005-11-01), Ishida et al.
patent: 2001/0028565 (2001-10-01), Ishida
patent: 2004/0213001 (2004-10-01), Sayers et al.
patent: 2003-31007 (2003-01-01), None

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