Railroad crossing signal lamp

Details Railroad crossing signal lamp Railroad crossing signal lamp

F - Mech Eng,Light,Heat,Weapons

21

S

240/58

F21S 8/00 (2006.01) B61L 5/18 (2006.01)

Patent

CA 1083110

IMPROVED RAILROAD CROSSING SIGNAL LAMP Abstract of the Disclosure An improved railroad crossing signal includes a deep dish parabolic reflector and an essentially flat plastic lens angled forward at the top relative to the axis of the reflector. The lens includes prism elements for laterally dispersing parallel light from the reflector more toward the crossing highway at near and far distances than toward the adjacent land. The lens also includes prism elements for vertically dispersing a portion of the light to produce uniform brightness before the signal.

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