04654629 is referenced by 145 patents and cites 41 patents.

A marker light using an array (2) of light emitting diodes (12) in combination with lenses (3) provides a light beam of required intensity, shape and color for railroad applications. The light emitting diodes are arranged in various configurations to form the array (2). The lenses may be Fresnel lenses. Control circuitry (C) energizes the light emitting diodes at predetermined or variable flashing rates. Sensing circuitry (222) senses the failure of light emitting diodes in the array and provides an indication of such failure.

Title
Vehicle marker light
Application Number
6/751221
Publication Number
4654629
Application Date
July 2, 1985
Publication Date
March 31, 1987
Inventor
Emilio A Fernandez
Fairfax County
VA, US
Angel P Bezos
Montgomery County
MD, US
Agent
W Boswell Childs
C Lamont Whitham
Assignee
Pulse Electronics
MD, US
IPC
B60Q 1/00
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