Light emitting diode-based signal light

An LED-based light source comprising:

• a threaded electrical connector arranged to receive electrical power;
• power converting electronics that receive the electrical power and convert the electrical power to converted power;
• a plurality of LEDs arranged to receive the converted power, the LEDs producing a generally forwardly directed first light beam responsive to receipt of the converted power,
• a light dispersing element arranged at a focal region of a collimating reflector, the light dispersing element intercepting and transforming the first light beam into dispersed light emanating from the focal region;
• and
• an optical system including the collimated reflector arranged to focus dispersed light emanating from the focal region into an output light beam having selected beam characteristics.

A lamp for use in a light producing apparatus having a socket through which power is supplied to the lamp, said socket holding the lamp, and a collimating reflector that directs light outwardly from the light producing apparatus, said lamp comprising:

• a connector by which the lamp is installed in the socket;
• a plurality of LEDs electrically connected to the connector;
• and
• a partially light-transmissive and partially light-reflective redirection optical element arranged at about a focal position of the collimating reflector when the lamp connector is installed in the socket, the redirection optical element (i) partially reflecting light emitted from the plurality of LEDs into the collimating reflector and (ii) partially transmitting light emitted from the plurality of LEDs, wherein the partially reflected light and the partially transmitted light together approximate one of a point light source and a line light source.