RETROREFLECTION DEVICE

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 s...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HAMADA, YUTAKA, MIMURA, IKUO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES FIXED CONSTRUCTIONS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS
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Beschreibung
Zusammenfassung:	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.