Patent ID: 11892635
Assignee: LUMUS LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for manufacturing a display, the method comprising the steps of:
(a) providing a light-guide optical element (LOE) having a pair of parallel planar major external surfaces for guiding image illumination by internal reflection from said major external surfaces, said LOE having a coupling-out configuration for redirecting image illumination propagating within said LOE outwards towards an eye of an observer, said LOE having a planar slanted edge surface extending between said pair of parallel major external surfaces, said slanted edge surface being at a first acute angle to a normal to said major external surfaces;
(b) attaching to said slanted edge surface a triangular intermediate prism, said intermediate prism presenting a planar coupling-in surface at a second acute angle to the normal to said major external surfaces; and
(c) aligning with said coupling-in surface an image projector comprising a collimating optical arrangement for projecting image illumination corresponding to a collimated image, said image projector being aligned to inject the image illumination as a collimated image through said coupling-in surface so as to enter said LOE via said slanted edge and to propagate as a collimated image within said LOE by internal reflection at said major external surfaces until being redirected by said coupling-out configuration towards the eye of the observer.