Vehicle lamp unit

Details Vehicle lamp unit Vehicle lamp unit

2007-04-10

2007-04-10

Luebke, Renee (Department: 2875)

Illumination

Light modifier

Reflector

C362S517000, C362S297000, C362S304000, C362S305000

Reexamination Certificate

active

11075889

ABSTRACT:
A frontal surface of a light transmitting member disposed in such a manner as to cover a light emitting element from a front side thereof is made up of an ellipsoid of revolution which adopts an optical axis as a center axis thereof and a point on the optical axis which is near the light emitting element as a rear primary focal point thereof. A central region of the light transmitting member positioned near the optical axis is made as a light emitting surface which causes light from the light emitting element to be emitted forward. A circumferential edge region of the light transmitting member positioned outer circumferentially of the central region is made as a light reflecting surface which internally reflects light from the light emitting element so as to be directed towards a secondary focal point of the ellipsoid of revolution.

REFERENCES:
patent: 6181478 (2001-01-01), Mandella
patent: 6644841 (2003-11-01), Martineau
patent: 7021797 (2006-04-01), Minano et al.
patent: 2003/0218882 (2003-11-01), Wirth et al.
patent: 2552528 (1985-03-01), None
patent: 2002-50214 (2002-02-01), None

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