COLLIMATING OPTICAL DEVICE AND SYSTEM

摘要

There is provided a light-guide, compact collimating optical device, including a light-guide having a light-waves entrance surface, a light-waves exit surface and a plurality of external surfaces, a light-waves reflecting surface carried by the light-guide at one of the external surfaces, two retardation plates carried by light-guides on a portion of the external surfaces, a light-waves polarizing beamsplitter disposed at an angle to one of the light-waves entrance or exit surfaces, and a light-waves collimating component covering a portion of one of the retardation plates. A system including the optical device and a substrate, is also provided.

主权项

1. An optical system, comprising:
an optical device for collimating light waves including an arrangement of optical elements having a light-waves input surface and a light-waves exit surface; a light-waves transmitting substrate having at least two external major surfaces parallel to each other, edges, an input aperture and an output aperture; an optical element for coupling light waves into the substrate so that light waves are trapped inside the substrate by internal reflection; at least one partially reflecting surface located in the substrate for coupling the light waves out of the substrate, the partially reflecting surface being non-parallel to the major surfaces of the substrate; the input aperture of the substrate positioned adjacent to the exit surface of the collimating optical device defining a first interface plane, and the part of the collimating optical device adjacent to the first interface plane is made of a first optical material, and the part of the substrate adjacent to the first interface plane is made of a second, different optical material.