A vehicle number plate comprises a transparent plastic panel 1 to the rear surface 2 of which characters 3 are applied, e.g. by printing, the characters being in reverse so that they are readable through the front surface. A coating of retroreflective paint is then applied, e.g. by spraying 4, over the rear surface of the panel. The characters 3 are visible against the retroreflective coating when viewed through the front of the license plate. The vehicle registration plate may be formed from an acrylic panel.
Vehicle registration plates
11.03.2020
Patent
Elektronische Ressource
Englisch
Image capture and automatic identification of vehicle registration plates
British Library Conference Proceedings | 1995
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