Retroreflective lenticular arrays

摘要

Retroreflective lenticular systems employing a focusing array and a retroreflector array optically coupled to the focusing array. The focusing array is provided on a first surface and the retroreflector array is provided on an opposing second surface. The retroreflector array includes an array of retroreflective elements alternating with separation areas and disposed in energy exchange relationship with respect to the focusing array. The focusing array includes a plurality of focusing lenses configured to illuminate only the retroreflective elements with focused beams at least at some angles and to focus the incident beam only onto the separation areas at other angles. The intermittent illumination of retroreflective elements provides variable retroreflectivity of at least portions of the system and enhances the system visibility and conspicuity in the reflected light.

主权项

1. A retroreflective lenticular system comprising:
a first surface incorporating an array of lenses; and a second surface extending parallel to said first surface and spaced apart from said first surface by an effective focal distance characterizing said lenses, wherein at least one region of said second surface comprises a plurality of retroreflective areas spaced apart from each other and alternating with non-retroreflective separation areas according to a predetermined pattern.