A substrate includes a diffracting structure providing a hologram (20, 6). The diffracting structure encodes a holographic image so that thatholographic image is produced in response to reference light being incident on a major surface of the substrate at an angle of incidence with respect to the said major surface of the substrate, wherein the angle of incidence is no more than 20°.
申请公布号
WO2013030586(A1)
申请公布日期
2013.03.07
申请号
WO2012GB52138
申请日期
2012.08.31
申请人
THE SECRETARY OF STATE FOR BUSINESS,INNOVATION & SKILLS OF HER MAJESTY'S BRITANNIC GOVERNMENT;HALL, SIMON RICHARD GEOFFREY;STEVENS, RICHARD FREDERICK
发明人
HALL, SIMON RICHARD GEOFFREY;STEVENS, RICHARD FREDERICK