Patent ID: 11940625
Assignee: LUMUS LTD.
Field: Optics (Instruments)
Classification: CPC G  B | IPC B  F  G

Claim 20:
21. A display for displaying an image to an eye of an observer, the display comprising:
(a) a partial reflector on a surface of a windscreen of a vehicle;
(b) an image projector assembly deployed for projecting image illumination towards said reflector so as to be reflected towards the eye of the observer so as to be viewed by the eye of the observer as an image, said image projector assembly comprising:
(i) a light-guide optical element (LOE) having a pair of parallel major faces;
(ii) a projector arrangement for injecting an image into said LOE so as to propagate within said LOE by internal reflection at said pair of major faces;
(iii) a coupling-out arrangement for coupling the image out from said LOE in a direction away from said partial reflector; and
(iv) a projector reflector deployed to reflect the coupled-out image back through the LOE towards the partial reflector,
and wherein said partial reflector is a selective reflector such that a proportion of said image illumination reflected by said partial reflector towards the eye of the observer is greater than a proportion of light from an external scene that is excluded by said partial reflector from passing through said windscreen.