Substrate-guided optical devices

G - Physics – 02 – B

Patent

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Details

G02B 27/01 (2006.01)

Patent

CA 2538323

There is provided an optical device, having a light-transmitting substrate having at least two major surfaces (26) parallel to each other and edges; optical means (16) for coupling light waves located in a field-of-view into the substrate by internal reflection, and at least one partially reflecting surface (22) located in the substrate which is non-parallel to the major surfaces of the substrate, characterized in that at least one of the major surfaces is coated with a dichroic coating.

L'invention concerne un dispositif optique comprenant: un substrat de transmission lumineuse qui comporte au moins deux surfaces principales (26) parallèles l'une à l'autre, ainsi que des bords; un moyen optique (16) servant à injecter des ondes lumineuses se trouvant dans un champ de vision, dans ledit substrat, par réflexion interne, et; au moins une surface partiellement réfléchissante (22) qui est située dans le substrat et qui n'est pas parallèle auxdites surfaces principales du substrat. Cette invention est caractérisée en ce qu'une des surfaces principales est recouverte d'un revêtement dichroïque.

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