Luminaire and optical system for use therein

Details Luminaire and optical system for use therein Luminaire and optical system for use therein

B - Operations, Transporting

64

F

240/57

B64F 1/20 (2006.01) G08G 5/00 (2006.01)

Patent

CA 1064876

LUMINAIRE AND OPTICAL SYSTEM FOR USE THEREIN Abstract of the Disclosure A luminaire for providing at least a shallow uniform equatorial zone of illumination above the pavement of air- port taxiways and parking areas comprising a housing pro- vided with an upper section having a vertical opening therethrough, a lens within the opening having a shallow frustoconical light exit face extending only slightly above the opening and a steeper generally conical light entrance face coaxial with and disposed below the light-entrance face, a lamp recessed substantially below the entrance face and proximate the axis of the light exit and entrance faces, and a reflector symmetrical about the axis of the exit and entrance faces for reflecting light rays from the lamp into the light entrance face at a predetermined range of angles of incidence therewith.

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