公开(公告)号：US11092810B2

公开(公告)日：2021-08-17

申请号：US16765485

申请日：2018-11-21

Applicant: Lumus Ltd.

Inventor： Yochay Danziger ,  Jonathan Gelberg

IPC: G02B27/01 ,  F21V8/00

Abstract: An optical aperture expansion arrangement particularly useful for near-eye displays employs a waveguide (30, 140, 145) with wedge configurations (25, 26) to generate two modes of propagation of image illumination along the waveguide, and to couple out both modes from the waveguide. Various embodiments employ rectangular waveguides within which the image illumination propagates by four-fold internal reflection. In some cases, the wedge configurations are combined with an array of partially-reflective internal surfaces (45, 150) to achieve two-dimensional aperture expansion.

公开(公告)号：US20190170327A1

公开(公告)日：2019-06-06

申请号：US15990639

申请日：2018-05-27

Applicant: LUMUS LTD.

Inventor： Tsion Axel EISENFELD ,  Jonathan Gelberg ,  Alon Koren

IPC: F21V13/12 ,  G02B5/02 ,  F21V5/00 ,  F21V7/04 ,  F21V7/28 ,  F21V9/14 ,  F21V5/04

Abstract: An illuminator device includes a diffuser and a light collecting and concentrating element. The diffuser receives light rays from a light source as input and distributes light rays as output. The light collecting and concentrating element includes an input optical aperture formed on a base surface, an output optical aperture formed on an opposing surface to the base surface, and at least two sidewalls. The sidewalls extend substantially between the input and output optical apertures. The diffuser optically attaches to the base surface such that light rays from the diffuser output couple into the light collecting and concentrating element through the input optical aperture.