Retroreflection device

Details Retroreflection device Retroreflection device

2005-04-26

2005-04-26

Cherry, Euncha P. (Department: 2872)

Optical: systems and elements

Signal reflector

3-corner retroreflective

C359S530000

Reexamination Certificate

active

06883921

ABSTRACT:
The first reflective lateral face of the first triangular-pyramidal retroreflective unit is on the same plane with the first lateral face of the tetrahedral retroreflective unit, the second reflective lateral face of the first triangular-pyramidal retroreflective unit is on the same plane with the second lateral face of the tetrahedral retroreflective unit, the third reflective lateral face of the first triangular-pyramidal retroreflective unit is parallel to one of the two lateral faces forming a V-shaped groove, the third reflective lateral face of the second triangular-pyramidal retroreflective unit is identical with, or parallel to, the other of the two faces forming said V-shaped groove, and the third reflective lateral face of said tetrahedral retroreflective unit is same as one of the two faces forming said V-shaped groove.

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