Luminaire and dynamic road-marking unit

Details Luminaire and dynamic road-marking unit Luminaire and dynamic road-marking unit

2007-01-30

2007-01-30

Lee, John D. (Department: 2874)

Optical waveguides

With optical coupler

Input/output coupler

C385S038000, C362S558000, C362S609000

Reexamination Certificate

active

10518831

ABSTRACT:
A luminaire1comprising a light-directing element3, e.g. a reflector, having a light emission window5. Said reflector has a shape for directing light originating from an electric light source7into an optical fiber system9positioned in front of the light emission window. The optical fiber system comprises a bundle of optical fibers11. Said shape is calculated in accordance with a ray-tracing algorithm which takes into account that said light source is voluminous, e.g. a Light Emitting Diode. The reflector has a shape which is composed of n solids of revolution of parabolic sectors13, wherein said (adjoining) parabolic sectors form an integral surface15. The invention further relates to a dynamic road marking unit19.

REFERENCES:
patent: 5607229 (1997-03-01), Rykowski et al.
patent: 5857041 (1999-01-01), Riser et al.
patent: 5971571 (1999-10-01), Rose
patent: 6385371 (2002-05-01), Li
patent: 6418253 (2002-07-01), Whitehead
patent: 0615094 (1994-09-01), None
patent: WO0192641 (2001-12-01), None

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