A lighting device includes a housing having an open end and a geometrical axis and at least one light source disposed along an optical axis. The lighting device further includes an outer optical element having a focal point and closing the open end of the housing, the optical element comprising a converging outer surface and a diverging inner surface that cooperates with the light coming from the inner optical element. Additionally, the lighting device includes an inner optical element between the light source and the outer optical element, the inner optical element redirecting light from a light source that is offset from the focal point toward the outer optical element.
LED TRAFFIC SIGNAL AND OPTICAL ELEMENT THEREFOR
LED-VERKEHRSSIGNAL UND OPTISCHES ELEMENT DAFÜR
SIGNAL DE CIRCULATION À DIODES ÉLECTROLUMINESCENTES ET ÉLÉMENT OPTIQUE POUR CE DERNIER
2018-07-25
Patent
Elektronische Ressource
Englisch
IPC: | F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / F21W Index-Schema in Verbindung mit den Unterklassen F21K, F21L, F21S und F21V, betreffend den Gebrauch oder Einsatz von Leuchten oder Beleuchtungssystem , INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS / F21Y Index-Schema in Verbindung mit den Unterklassen F21K, F21L, F21S und F21V, betreffend die Form oder die Art der Lichtquellen oder die Farbe des emittierten Lichts , INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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