Multi-color traffic signal
AssigneeCir S.p.A. Divisione Sasib
InventorGiancarlo Pasquali
Life of this patent
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Abstract
A multi-color traffic signal in particular for railway line signalling installations, presents for each color a light source comprising a lamp, a collecting optical unit and a fixed chromatic filter. The light sources are connected by means of an optical fiber guide with an irradiating window surface constituting the output optics of the signal. The collecting optical unit comprises, arranged along a same optical axis and at opposite sides of the respective lamp, a curved focalized mirror and a spherical-elliptical lens, arranged so as to focalize the light flux of said lamp on the corresponding input of said optical fiber guide.
Claims5
Multi-color traffic signal in particular for railway line signalling installations, of the type presenting for each color a light source comprising a lamp, a collecting optical unit and a fixed chromatic filter, the light sources being connected by means of a optical fiber guide with an irradiating window surface constituting the output optics of the signal, characterized by the fact that said collecting optical unit comprises, arranged along a same optical axis and at opposite sides of the respective lamp, a curved focalized mirror and a spherical-elliptical lens, arranged so as to focalize the light flux emanating directly from said lamp and the flux reflected from said mirror on the corresponding input of said optical fiber guide.
Dependencies are inferred from the claim text.