公开(公告)号：US20220357498A1

公开(公告)日：2022-11-10

申请号：US17417175

申请日：2021-02-02

Applicant: Lumus Ltd.

Inventor： Ido FUCHS ,  Edgar FRIEDMANN ,  Elad SHARLIN ,  Kobi GREENSTEIN ,  Lilach ZUARETZ ,  Tsion EISENFFELD ,  Shimon GRABARNIK ,  Amir SHAPIRA ,  Dror HERMONI

IPC: F21V8/00 ,  G02B27/01

Abstract: A method for producing light-guide optical elements (LOEs) (16, 18, 56, 58) each having a set of mutually-parallel partially-reflecting surfaces (17) located between, and oriented non-parallel to, a pair of major external surfaces, and at least one region (30a, 30b, 30c) without partially-reflecting surfaces. The method includes bonding together parallel-faced plates (4) at interfaces to form a stack (42) of plates with partially-reflecting coatings between them. The stack is cut and polished to form a boundary plane (48, 48a, 48b) intersecting the interfaces, and a block (50, 50a, 50b) of transparent material is bonded to the stack. The resulting precursor structure (52, 52′) is sliced along parallel planes to form slices, each containing a part of the stack for the active region of the LOE and a part of the block.

公开(公告)号：US20200033572A1

公开(公告)日：2020-01-30

申请号：US16595506

申请日：2019-10-08

Applicant: LUMUS LTD.

Inventor： Yochay DANZIGER ,  Edgar FRIEDMANN

IPC: G02B17/08 ,  G02B6/34 ,  G02B17/00 ,  B29D11/00 ,  G02B1/10

Abstract: A light-guide device includes a light guiding element (13) with a number of faces, including two parallel faces (26), for guiding light by internal reflection. A transparent optical element (19) has an interface surface for attachment to a coupling surface (14) of the light guiding element, and is configured such that light propagating within the transparent optical element passes through the interface surface and the coupling surface (14) so as to propagate within the light guiding element (13). A non-transparent coating (15) is applied to at least part of one or more faces of the light guiding element (13), defining an edge (17) adjacent to, or overlapping, the coupling surface (14) of the light guiding element (13). A quantity of transparent adhesive is deployed between the coupling surface and the interface surface so as to form an optically transmissive interface. An overspill region 31 of the adhesive extends to, and overlaps, the edge (17).