Transparent retroreflective sheets containing directional...

Details Transparent retroreflective sheets containing directional... Transparent retroreflective sheets containing directional...

G - Physics

02

B

88/113

G02B 5/128 (2006.01) G06K 19/14 (2006.01)

Patent

CA 1263264

Abstract A directional image is created in substantially transparent retroreflective sheeting comprising a monolayer of microlenses and a partially light transmissive mirror disposed at the rear surfaces of at least some of said microlenses. The image is created by irradiation of the sheeting with a laser beam to form axial markings associated with at least some of the micro lenses. The image may be formed in sheeting which has been applied to a document as an overlay.

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