公开(公告)号：US20210165231A1

公开(公告)日：2021-06-03

申请号：US17265586

申请日：2020-05-06

Applicant: Lumus Ltd

Inventor： Jonathan GELBERG ,  Tsion EISENFELD

IPC: G02B27/01 ,  G02B27/14

Abstract: A light-guide optical element (LOE) for simultaneous viewing, of a real scene and of a projected image introduced into the LOE, having a transparent block along which light conveying a projected image propagates by internal reflection, and a plurality of internal partially reflecting surfaces obliquely oriented and configured so as to couple-out a part of said light, wherein the reflectance of each of the partially reflecting surfaces is such that the total power of the light that is coupled out is less than one third of the total power of the light that is introduced into the LOE. In some embodiments, the light of the projected image is polarized and the reflectance of the partially reflecting surfaces for light polarized in an orthogonal orientation is substantially reduced. In some embodiments, the reflectance of the partially reflecting surfaces for light not reaching the viewer is substantially reduced.

公开(公告)号：US20190361240A1

公开(公告)日：2019-11-28

申请号：US16423014

申请日：2019-05-26

Applicant: LUMUS LTD

Inventor： Jonathan GELBERG

IPC: G02B27/01 ,  F21V8/00

Abstract: A light-transmitting substrate has at least a first and a second major external surface. An electronic display source emanates light waves. A coupling-in optical arrangement couples light waves from the electronic display source into the light-transmitting substrate to effect total internal reflection of the coupled-in light waves between the major external surfaces of the light-transmitting substrate. An optical element is deployed in an optical path for light waves to traverse from the electronic display source into the light-transmitting substrate. The optical element defines a field curvature that causes light rays of the traversing light waves to diverge or converge. A lens is deployed in the optical path and reduces the field curvature. The electronic display source has a curvature that is matched to the reduced field curvature to counteract the divergence or convergence of the light rays caused by the reduced field curvature.