Illumination system having edge-illuminated waveguide and...

F - Mech Eng,Light,Heat,Weapons – 21 – V

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F21V 8/00 (2006.01)

Patent

CA 2343394

An illumination system has separate components (e.g. microprism arrays) for extracting (60) and directing (80) light from a waveguide (30). The system eliminates the need to provide a light directing array (LDA) that is optically and physically coupled to the waveguide. It is more reliable and robust than previous illumination systems and virtually eliminates the failures associated illumination systems having laminated LDAs. Manufacturing costs are reduced and system performance and reliability are improved. The illumination system is inexpensive to construct, and operates in an efficient, reliable manner, affording extended service at low cost.

L'invention concerne un système d'éclairage comportant des composants (par exemple un réseau de microprismes) séparés servant à extraire (60) et à diriger (80) le faisceau lumineux partant du guide d'ondes. Ce système permet de s'affranchir de tout réseau photodirecteur optiquement et physiquement couplé au guide d'ondes. En outre, ce système est plus fiable et plus robuste que les systèmes d'éclairage antérieurs, et permet d'éliminer presque tous les défauts associés aux systèmes d'éclairage équipés de réseaux photodirecteurs laminés, d'où une réduction des coûts de fabrication et un système caractérisé par des performances et une fiabilité accrues. Ce système d'éclairage, qui est de fabrication peu coûteuse, fonctionne de manière efficace et fiable, offrant ainsi des services étendus à faible coût.

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