公开(公告)号：US11650540B2

公开(公告)日：2023-05-16

申请号：US16765825

申请日：2018-11-16

Applicant: University Court of the University of St Andrews

Inventor： Andrea Di Falco ,  James Burch

IPC: G03H1/00 ,  G03H1/02 ,  G03H1/22

CPC classification number: G03H1/0011 ,  G03H1/0244 ,  G03H1/0272 ,  G03H1/2202 ,  G03H1/2249 ,  G03H2001/0044 ,  G03H2001/2231 ,  G03H2001/2276 ,  G03H2210/12 ,  G03H2222/13 ,  G03H2222/20 ,  G03H2222/31 ,  G03H2250/39 ,  G03H2270/21 ,  G03H2270/31

Abstract: A holographic security or identification device (10) comprises an object, or a flexible substrate (12) configured to be conformable to a desired, curved shape; and a plurality of structures (14) formed on or in the object to have a desired curved configuration, or formed in or associated with the substrate and arranged to adopt a desired curved configuration when the substrate is conformed to a desired shape, wherein the plurality of structures (14) are configured to receive light (20) of a selected at least one wavelength or range of wavelengths and to produce, using the received light, a desired holographic image (22) for security or identification purposes when in the desired configuration.