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1. (WO2019064155) ACTIVE 3D SHUTTER-GLASSES OFFERING AN IMPROVED LEVEL OF IMAGE-BRIGHTNESS
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Pub. No.: WO/2019/064155 International Application No.: PCT/IB2018/057340
Publication Date: 04.04.2019 International Filing Date: 21.09.2018
IPC:
G02B 27/22 (2018.01) ,G02F 1/137 (2006.01) ,G02F 1/1343 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27
Other optical systems; Other optical apparatus
22
for producing stereoscopic or other three-dimensional effects
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
137
characterised by a particular electro- or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction, dynamic scattering
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
1343
Electrodes
Applicants:
VOLFONI R&D [FR/FR]; Les Bureaux du Parc, 2474 Rd 6007 Le Logis de Bonneau 06270 Villeneuve-Loubet, FR
Inventors:
PALMER, Stephen; SE
Priority Data:
62/563,74427.09.2017US
Title (EN) ACTIVE 3D SHUTTER-GLASSES OFFERING AN IMPROVED LEVEL OF IMAGE-BRIGHTNESS
(FR) LUNETTES-OBTURATEURS 3D ACTIVES OFFRANT UN NIVEAU DE LUMINOSITÉ D'IMAGE AMÉLIORÉ
Abstract:
(EN) The present invention discloses the design of active 3d shutter-glasses for the viewing of time-multiplexed stereoscopic three dimensional (3d) images that offer both an improved level of on-screen image-brightness as well as reduced manufacturing costs as compared to other prior-art technologies. The disclosed invention is based on the insight that a tangential in-plane electrical- field can be utilized in order to provide for a voltage-assisted relaxation switching step together with cholesteric liquid crystal materials, thereby increasing the relaxation speed of said cholesteric liquid crystal materials thereof. Furthermore, dichroic-dye materials can additionally be added to said cholesteric liquid crystal materials in order to absorb at least some of the scattered light and hence reduce the overall level of perceived on-screen image-haze.
(FR) La présente invention concerne la conception de lunettes-obturateurs 3d actives pour la visualisation d'images tridimensionnelles (3d) stéréoscopiques multiplexées dans le temps qui offrent à la fois un niveau amélioré de luminosité d'image sur écran ainsi que des coûts de fabrication réduits par comparaison avec d'autres technologies de l'état de la technique. La présente invention repose sur l'idée qu'un champ électrique tangentiel dans le plan peut être utilisé afin de fournir une étape de commutation de relaxation assistée par tension avec des matériaux à cristaux liquides cholestériques, ce qui permet d'augmenter la vitesse de relaxation desdits matériaux à cristaux liquides cholestériques. En outre, des matériaux de colorant dichroïque peuvent en plus être ajoutés auxdits matériaux à cristaux liquides cholestériques afin d'absorber au moins une partie de la lumière diffusée et, par conséquent, de réduire le niveau global de flou d'image sur écran perçu.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)