Optical: systems and elements – Signal reflector – Including a curved refracting surface
Patent
1995-10-26
1998-09-22
Phan, James
Optical: systems and elements
Signal reflector
Including a curved refracting surface
359519, 359540, 428325, G02B 5128
Patent
active
058123172
ABSTRACT:
An exposed lens retroreflective article 10 has in sequence a layer of microspheres 12, a polymeric intermediate layer 18, a metal reflective layer 16, and a polymeric binder layer 14. Microspheres 12 are partially embedded in the binder layer 14, and the intermediate layer 18 and the metal reflective layer 16 are disposed between the microspheres 12 and the binder layer 14 such that the intermediate layer 18 is in contact with microspheres 12. Retroreflective articles of this construction provide improved laundering durability.
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Billingsley Britton G.
Fleming Robert J.
Hanson Karl G.
Minnesota Mining and Manufacturing Company
Phan James
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