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1. WO2017132579 - MULTIBEAM ELEMENT-BASED BACKLIGHTING HAVING CONVERGING VIEWS

Publication Number WO/2017/132579
Publication Date 03.08.2017
International Application No. PCT/US2017/015454
International Filing Date 27.01.2017
IPC
G02B 6/35 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
24Coupling light guides
26Optical coupling means
35having switching means
F21V 8/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
8Use of light guides, e.g. fibre optic devices, in lighting devices or systems
CPC
G02B 30/33
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
30Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
20by providing first and second parallax images to an observer's left and right eyes
26of the autostereoscopic type
33involving directional light or back-light sources
G02B 6/0035
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0011the light guides being planar or of plate-like form
0033Means for improving the coupling-out of light from the light guide
0035provided on the surface of the light guide or in the bulk of it
G02B 6/0036
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0011the light guides being planar or of plate-like form
0033Means for improving the coupling-out of light from the light guide
0035provided on the surface of the light guide or in the bulk of it
00362-D arrangement of prisms, protrusions, indentations or roughened surfaces
G02B 6/0038
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0011the light guides being planar or of plate-like form
0033Means for improving the coupling-out of light from the light guide
0035provided on the surface of the light guide or in the bulk of it
0038Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
G02B 6/0061
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0011the light guides being planar or of plate-like form
0033Means for improving the coupling-out of light from the light guide
0058varying in density, size, shape or depth along the light guide
0061to provide homogeneous light output intensity
G02B 6/12014
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
10of the optical waveguide type
12of the integrated circuit kind
12007forming wavelength selective elements, e.g. multiplexer, demultiplexer
12009comprising arrayed waveguide grating [AWG] devices, i.e. with a phased array of waveguides
12014characterised by the wavefront splitting or combining section, e.g. grooves or optical elements in a slab waveguide
Applicants
  • LEIA INC. [US]/[US]
Inventors
  • FATTAL, David, A.
Agents
  • JOHNSON, J., Michael
Priority Data
62/289,23930.01.2016US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MULTIBEAM ELEMENT-BASED BACKLIGHTING HAVING CONVERGING VIEWS
(FR) RÉTROÉCLAIRAGE À BASE D'ÉLÉMENTS À FAISCEAUX MULTIPLES À VUES CONVERGENTES
Abstract
(EN)
A multiview backlight and a multiview display employ multibeam elements configured to provide a tilted plurality of light beams having different principal angular directions corresponding to different view directions of a plurality of views of the multiview display. Further, the tilted plurality of light beams has a tilt toward a center of a view zone of the multiview display to provide converging views. The multiview backlight includes a light guide and an array of the multibeam elements. The multiview display further includes multiview pixels that include view pixels to modulate the tilted plurality of light beams having the tilt and the different principal angular directions.
(FR)
L'invention concerne un rétroéclairage à vues multiples et un afficheur à vues multiples utilisant des éléments à faisceaux multiples configurés pour fournir une pluralité de faisceaux de lumière inclinés ayant différentes directions angulaires principales correspondant à différentes directions de visualisation d'une pluralité de vues de l'affichage à vues multiples. En outre, la pluralité de faisceaux de lumière inclinée a une inclinaison vers le centre d'une zone de visualisation de l'affichage à vues multiples pour fournir des vues convergentes. Le rétroéclairage à vues multiples comprend un guide de lumière et un réseau des éléments à faisceaux multiples. L'affichage à vues multiples comprend en outre des pixels à vues multiples qui comprennent des pixels de visualisation pour moduler la pluralité de faisceaux de lumière inclinés ayant l'inclinaison et les différentes directions angulaires principales.
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