EP 4381227 A1 20240612 - IMAGING LIGHT GUIDE APPARATUS WITH LIGHT SECURITY
Title (en)
IMAGING LIGHT GUIDE APPARATUS WITH LIGHT SECURITY
Title (de)
ABBILDUNGSLICHTLEITERVORRICHTUNG MIT LICHTSICHERHEIT
Title (fr)
APPAREIL DE GUIDAGE DE LUMIÈRE D'IMAGERIE À SÉCURITÉ LUMINEUSE
Publication
Application
Priority
- US 202163244712 P 20210915
- US 202163278991 P 20211112
- US 2022043719 W 20220915
Abstract (en)
[origin: WO2023043961A1] A light secure image light guide including an image source operable to generate image-bearing light beams and a waveguide operable to propagate the image-bearing light beams. An in- coupling diffractive optic formed along the waveguide, wherein the in-coupling diffractive optic is operable to diffract a portion of the image-bearing light beams from the image source into the waveguide in an angularly encoded form, and an out-coupling diffractive optic formed along the waveguide, wherein the out-coupling diffractive optic is operable to expand the portion of image-bearing light beams, direct a first portion of expanded image-bearing light beams from the waveguide in an angularly decoded form in a first direction toward an eyebox, and direct a second portion of expanded image-bearing light beams from the waveguide in a second direction different from said first direction. The image light guide further including an optical device operable to reduce, eliminate, and/or block the second portion of expanded image-bearing light beams output from the image light guide in the second direction.
IPC 8 full level
F21V 8/00 (2006.01); G02B 27/00 (2006.01); G02B 27/01 (2006.01); G02B 27/28 (2006.01)
CPC (source: EP)
G02B 27/0081 (2013.01); G02B 27/0172 (2013.01); G02F 1/13 (2013.01); G02B 2027/012 (2013.01); G02B 2027/0125 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
US 2022043719 W 20220915; EP 22870716 A 20220915