Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO1992009915) LIGHTING DEVICE AND APPLICATION IN A DISPLAY DEVICE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/009915 International Application No.: PCT/FR1991/000904
Publication Date: 11.06.1992 International Filing Date: 15.11.1991
IPC:
G02B 5/20 (2006.01) ,G02B 5/32 (2006.01) ,G02B 27/28 (2006.01) ,G02F 1/1335 (2006.01) ,G02F 1/13357 (2006.01) ,H04N 5/74 (2006.01) ,H04N 9/31 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5
Optical elements other than lenses
20
Filters
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5
Optical elements other than lenses
32
Holograms used as optical elements
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27
Other optical systems; Other optical apparatus
28
for polarising
G PHYSICS
02
OPTICS
F
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1
Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01
for the control of the intensity, phase, polarisation or colour
13
based on liquid crystals, e.g. single liquid crystal display cells
133
Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333
Constructional arrangements
1335
Structural association of optical devices, e.g. polarisers, reflectors, with the cell
[IPC code unknown for ERROR IPC Code incorrect: invalid subgroup (0=>999999)!]
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
74
Projection arrangements for image reproduction, e.g. using eidophor
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
9
Details of colour television systems
12
Picture reproducers
31
Projection devices for colour picture display
Applicants:
THOMSON-CSF [FR/FR]; 51, esplanade du Général-de-Gaulle F-92800 Puteaux, FR (AllExceptUS)
LOISEAUX, Brigitte [FR/FR]; FR (UsOnly)
HUIGNARD, Jean-Pierre [FR/FR]; FR (UsOnly)
NICOLAS, Christophe [FR/FR]; FR (UsOnly)
PUECH, Claude [FR/FR]; FR (UsOnly)
Inventors:
LOISEAUX, Brigitte; FR
HUIGNARD, Jean-Pierre; FR
NICOLAS, Christophe; FR
PUECH, Claude; FR
Agent:
LARDIC, René; Thomson-CSF SCPI F-92045 Paris-La Défense Cédex 67, FR
Priority Data:
90/1462023.11.1990FR
Title (EN) LIGHTING DEVICE AND APPLICATION IN A DISPLAY DEVICE
(FR) DISPOSITIF D'ECLAIRAGE ET APPLICATION A UN DISPOSITIF DE VISUALISATION
Abstract:
(EN) A lighting device in which a holographic means (HPi) separates polarisations of an incident beam. The resulting polarised beam is transmitted to a holographic device (HLi) focusing the beam on different points of a screen. This screen may be a liquid crystal display (LCD).
(FR) L'invention concerne un dispositif d'éclairage dans lequel un dispositif holographique (HPi) sépare les polarisations d'un faisceau incident. Le faisceau polarisé résultant est transmis à un dispositif holographique (HLi) focalisant le faisceau en différents points d'un écran. Cet écran peut être un écran à cristal liquide (LCD). Application: visualisation à cristal liquide.
Designated States: CA, JP, KR, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: French (FR)
Filing Language: French (FR)
Also published as:
ES2116330EP0512099US5621547US5784181JPH05503794CA2073250
DE000069129530KR1019927004184FR2669744