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1. (WO1997016765) PICTURE DISPLAY DEVICE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/016765 International Application No.: PCT/IB1996/001144
Publication Date: 09.05.1997 International Filing Date: 24.10.1996
IPC:
G02F 1/1335 (2006.01)
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
Applicants:
PHILIPS ELECTRONICS N.V. [NL/NL]; Groenewoudseweg 1 NL-5621 BA Eindhoven, NL
PHILIPS NORDEN AB [SE/SE]; Kottbygatan 7, Kista S-164 85 Stockholm, SE (SE)
Inventors:
NEIJZEN, Jacobus, Hermanus, Maria; NL
Agent:
BAELE, Ingrid, A., F., M.; Internationaal Octrooibureau B.V. P.O. Box 220 NL-5600 AE Eindhoven, NL
Priority Data:
95202961.902.11.1995EP
Title (EN) PICTURE DISPLAY DEVICE
(FR) DISPOSITIF AFFICHEUR D'IMAGES
Abstract:
(EN) Picture display device (1) comprising an illumination system (3) and a picture display panel (7) which is provided with a matrix of pixels. The picture display panel (7) may be a transmissive or a reflective picture display panel. In the case of a transmissive picture display panel, a first microlens array (19) is arranged at the illumination side of the picture display panel (7), and a second microlens array (21) is arranged at the side of the picture display panel (7) remote from the illumination system (3). In the case of a reflective picture display panel, the picture display device (1) comprises only one microlens array (61) which is arranged between the illumination system (3) and the picture display panel (7). In both cases, the number of lenses (23, 25; 63) of a microlens array (19, 21; 61) corresponds to the number of pixels (27) of the picture display panel (7). A beam-refracting element (37, 39; 67), by means of which a beam waist is realized at the area of the picture display panel (7), corresponds to each lens (23, 25; 63) of a microlens array (19, 21; 61).
(FR) L'invention concerne un dispositif afficheur d'images (1) comportant un système d'éclairage (3) et un panneau d'affichage d'images (7) pourvu d'une matrice de pixels. Ce panneau d'affichage d'images (7) peut être à transmission ou à réflexion. Dans le premier cas, une première rangée de micro-lentilles (19) est disposée du côté de l'éclairement du panneau d'affichage d'images (7), une seconde rangée de micro-lentilles (21) l'étant sur le côté éloigné du système d'éclairement (3). Dans le second cas, le dispositif afficheur d'images (1) ne comporte qu'une rangée de micro-lentilles (61) située entre le système d'éclairement (3) et le panneau d'affichage d'images (7). Dans les deux cas, le nombre de lentilles (23, 25, 63) d'une rangée de micro-lentilles (19, 21, 61) correspond au nombre de pixels (27) du panneau d'affichage d'images (7). Un élément de réfraction de faisceau (37, 39, 67) permettant d'obtenir une taille minimale de faisceau dans le secteur du panneau d'affichage d'images (7) correspond à chaque lentille (23, 25, 63) d'une rangée de micro-lentilles (19, 21, 61).
Designated States: CN, JP, KR
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0801765JPH10512377 CN1176008KR1019987001098