SUBSTRATE-GUIDE OPTICAL DEVICE

摘要

An optical device, including a light waves-transmitting substrate has two major surfaces and edges, optical means for coupling light into the substrate by total internal reflection, and a plurality of partially reflecting surfaces (22a, 22b) carried by the substrate. The partially reflecting surfaces (22a, 22b) are parallel to each other and are not parallel to any of the edges of the substrate, one or more of the partially reflecting surfaces (22a, 22b) being an anisotropic surface. The optical device has dual operational modes in see-through configuration. In a first mode, light waves are projected from a display source through the substrate to an eye of a viewer. In a second mode, the display source is shut off and only an external scene is viewable through the substrate.

主权项

1. An optical system, comprising:
a first viewing device including a light waves-transmitting substrate having at least two major surfaces and edges; an electronic display source; an optical device for coupling light waves from the electronic display source into the substrate by total internal reflection to form an electronic display, and a plurality of partially reflecting surfaces carried by the substrate, the partially reflecting surfaces being parallel to each other and not parallel to any of the edges of the substrate; a second viewing device, separated from the first viewing device, the second viewing device is a hand-held display; wherein the two viewing devices are connected to each other.