Substrate-guided optical beam expander

G - Physics – 02 – B

Patent

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Details

G02B 27/09 (2006.01) G02B 6/00 (2006.01) G02B 27/01 (2006.01) G02C 7/06 (2006.01) G02B 27/00 (2006.01)

Patent

CA 2411442

The invention provides an optical device, including a light-transmitting substrate, optical means for coupling light into the substrate by total internal reflection, and a plurality of partially reflecting surfaces carried by the substrate, characterized in that the partially reflecting surfaces are parallel to each other and are not parallel to any of the edges of the substrate.

L'invention concerne un appareil optique comprenant un substrat émetteur de lumière, un dispositif optique permettant de coupler la lumière dans le substrat par réflexion intérieure totale, et plusieurs surfaces partiellement réfléchissantes sur le substrat. L'appareil se caractérise en ce que les surfaces partiellement réfléchissantes sont parallèles les unes aux autres et ne sont parallèles à aucun bord du substrat.

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