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1. (WO2014201559) INTERFERENCE SECURITY IMAGE STRUCTURE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2014/201559 International Application No.: PCT/CA2014/050567
Publication Date: 24.12.2014 International Filing Date: 17.06.2014
IPC:
G02B 5/28 (2006.01) ,B42D 25/29 (2014.01) ,B42D 25/351 (2014.01) ,B42D 25/373 (2014.01) ,B42D 25/45 (2014.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5
Optical elements other than lenses
20
Filters
28
Interference filters
[IPC code unknown for B42D 25/29][IPC code unknown for B42D 25/351][IPC code unknown for B42D 25/373][IPC code unknown for B42D 25/45]
Applicants: CORPORATION DE L'ECOLE POLYTECHNIQUE DE MONTREAL[CA/CA]; 2500 Chemin Polytechnique Montréal, Québec H3T 1J4, CA
Inventors: BALOUKAS, Bill; CA
MARTINU, Ludvik; CA
Agent: ANGLEHART ET AL.; 1939 de Maisonneuve Ouest Montreal, Québec H3H 1K3, CA
Priority Data:
61/836,10217.06.2013US
Title (EN) INTERFERENCE SECURITY IMAGE STRUCTURE
(FR) STRUCTURE D'IMAGE DE SÉCURITÉ D'INTERFÉRENCE
Abstract:
(EN) The interference filter structure has a filter with a top side and a bottom side, a partially reflecting/transmitting thin metal layer, dielectric spacers on each sides of the partially transparent layer and a semi-absorbing film on at least a portion of top side or bottom side of the dielectric spacers. The filter provides a reflection mode when observed from the top or bottom side and light transmission is side independent.
(FR) L'invention concerne une structure de filtre d'interférence comportant un filtre ayant un côté supérieur et un côté inférieur, une couche de métal fine partiellement réfléchissante/transmettrice, des entretoises diélectriques de chaque côté de la couche partiellement transparente et un film semi-absorbant sur au moins une partie du côté supérieur ou du côté inférieur des entretoises diélectriques. Le filtre offre un mode de réflexion lorsqu'il est observé depuis le côté supérieur ou inférieur, et la transmission de lumière est indépendante du côté.
front page image
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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, 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, 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, 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)