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1. (WO2010076471) VARIABLE POWER OPTICAL ELEMENT
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/076471 International Application No.: PCT/FR2009/052521
Publication Date: 08.07.2010 International Filing Date: 14.12.2009
IPC:
G02F 1/1333 (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
Applicants:
ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE) [FR/FR]; 147, rue de Paris F-94220 Charenton Le Pont, FR (AllExceptUS)
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE - CNRS - [FR/FR]; 3, rue Michel Ange F-75794 PARIS Cédex 16, FR (AllExceptUS)
ARCHAMBEAU, Samuel [FR/FR]; FR (UsOnly)
CAMON, Henri [FR/FR]; FR (UsOnly)
MIAS, Solon [FR/FR]; FR (UsOnly)
Inventors:
ARCHAMBEAU, Samuel; FR
CAMON, Henri; FR
MIAS, Solon; FR
Agent:
BOIRE, Philippe; Cabinet Plasseraud 52, rue de la Victoire F-75440 Paris Cedex 09, FR
Priority Data:
08 5857415.12.2008FR
Title (EN) VARIABLE POWER OPTICAL ELEMENT
(FR) ELEMENT OPTIQUE A PUISSANCE VARIABLE
Abstract:
(EN) The invention relates to a variable power optical element divided into cells (2, 20, 21) which contain two liquid crystals (CL1, CL2) mixed according to different proportions. The proportion of one of the liquid crystals in each cell increases on the basis of the radial distance between a central point of the optical element and said cell. An appropriate selection of the two liquid crystals results in a higher variation of the optical power between two control states of said optical element. More particularly, the optical element may consist of an ophthalmic lens which changes between a convergent lens state and a divergent lens state.
(FR) Un élément optique à puissance variable est divisé en cellules (2, 20, 21 ) qui contiennent deux cristaux liquides (CL1, CL2) mélangés dans des proportions différentes. La proportion de l'un des cristaux liquides dans chaque cellule augmente en fonction de la distance radiale entre un point central de l'élément optique et ladite cellule. Une sélection adéquate des deux cristaux liquides permet d'obtenir une variation supérieure de la puissance optique entre deux états de commande dudit élément optique. En particulier, l'élément optique peut être une lentille ophtalmique qui varie entre un état de lentille convergente et un état de lentille divergente.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, 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, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)
Also published as:
EP2366125JP2012512422US20120218483FR2939916