公开(公告)号：US20240231099A1

公开(公告)日：2024-07-11

申请号：US18287465

申请日：2022-06-09

Applicant: Lumus Ltd.

Inventor： Yochay DANZIGER ,  Eitan RONEN ,  Amir SHAPIRA ,  Ido FUCHS ,  Edgar FRIEDMANN ,  Aviv FROMMER

IPC: G02B27/01 ,  G02B6/42

CPC classification number: G02B27/0172 ,  G02B6/4206

Abstract: An optical device has an LOE formed from a light-transmitting material having a first refractive index. A pair of parallel major external surfaces of the LOE guide image illumination within the LOE by TIR. At least one optical coupling configuration of the LOE deflects a proportion of the image illumination that is guided within the LOE by TIR. An optical material includes at least one transparent material directly attached to the LOE at least at the major external surfaces so as to be in direct contact with the major external surfaces and so as to at least partially encapsulate the LOE. The optical material has a second refractive index less than the first refractive index to maintain conditions of TIR at the major external surfaces. In certain embodiments, the TIR-guided image illumination is incident to the major external surfaces at angles greater than a critical angle, including shallow angles.

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.