(19)
(11) EP 3 114 533 A2

(12)

(88) Date of publication A3:
10.12.2015

(43) Date of publication:
11.01.2017 Bulletin 2017/02

(21) Application number: 15720414.0

(22) Date of filing: 05.03.2015
(51) International Patent Classification (IPC): 
G03H 1/22(2006.01)
G02B 5/18(2006.01)
G02B 27/42(2006.01)
 G03H 1/00(2006.01)
G03H 1/08(2006.01)
(86) International application number:
PCT/IB2015/051616
(87) International publication number:
WO 2015/132752 (11.09.2015 Gazette 2015/36)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA

(30) Priority: 05.03.2014 IT TO20140178

(71) Applicant: Veneto Nanotech S.C.P.A.
35129 Padova (IT)

(72) Inventors:
  • ROMANATO, Filippo
    Trieste (IT)
  • RUFFATO, Gianluca
    I-35010 Padova (IT)
  • MASSARI, Michele
    I-35127 Padova (IT)

(74) Representative: Spalla, Pietro et al
Studio Torta S.p.A. Via Viotti, 9
10121 Torino
10121 Torino (IT)

   


(54) DIFFRACTIVE OPTICAL ELEMENT OF THE HOLOGRAPHIC TYPE FOR DECODING INFORMATION WITH A HIGH SECURITY LEVEL