Retroreflective device

Details Retroreflective device Retroreflective device

1975-03-10

1976-09-14

Corbin, John K.

Road structure, process, or apparatus

Apparatus

Rotating drum, roller or tire

404 12, 350 97, 350 99, G02B 5124

Patent

active

039803937

ABSTRACT:
A retroreflective device is disclosed comprising a convex-concavo lens having a cube-corner array extending across its concavity. The device returns in the same direction from which it is received a large proportion of incident light. The lens body is adapted with respect to reflected light to indicate a larger than actual area of the cube-corner array. The retroreflective device may be used as a marker, such as a roadmarker, the convex side of the lens body being exposed to receive the incident light.

REFERENCES:
patent: 2067701 (1937-01-01), James
patent: 2161842 (1936-12-01), Allison, Sr.
patent: 2360480 (1941-04-01), Dickson
patent: 3396639 (1968-08-01), Lemelson
patent: 3587416 (1971-06-01), Flanagan

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