Cube cornered high incidence angle retroreflective material

Details Cube cornered high incidence angle retroreflective material Cube cornered high incidence angle retroreflective material

G - Physics

02

B

240/167, 240/58

G02B 5/124 (2006.01) E01F 9/03 (2006.01) E01F 9/04 (2006.01) E01F 9/08 (2006.01)

Patent

CA 1084883

ABSTRACT Retroreflective film, sheeting or the like having an array of light-reflecting right triangle prisms between a transparent surface layer and a backing layer. The opposing triangular end faces of adjacent prisms are spaced apart to provide internal reflection therefrom. The retro- reflective material provides efficient retroreflection at angles of incidence of about 30-85° and therefore is effective where light is directed in a path nearly parallel to a reflective surface, such as highway lane dividers or guardrail markers placed parallel to a highway. Retrore- flective material on such markers becomes visible to an observer while yet remote from the markers.

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