Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
John Martin Haslop0
Brian William Holmes0
Date of Patent
January 27, 2009
0Patent Application Number
105779490
Date Filed
November 3, 2004
0Patent Primary Examiner
Patent abstract
A security device comprises a holographic or diffractive optically variable effect generating structure which, when viewed normally i.e. perpendicularly to the plane of the device, replays at least one composite image, the composite image being defined by at least a pair of discrete image elements, the structure being such that at least two of the discrete image elements of the composite image have different optimal replay angles.
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