Multiple-filament tungsten-halogen lighting system having managed tungsten redeposition

A tungsten-halogen lighting system comprising:

• a sealed glass envelope containing a halogen gas;
• at least two tungsten filaments enclosed within the glass envelope, each tungsten filament of the at least two tungsten filaments configured to generate light in response to a flow of electric current;
• a sensor configured to detect an indicia of tungsten redeposition on each tungsten filament of the at least two tungsten filaments and to generate a sensor signal indicative of the indicia;
• and
• a controller circuit configured to manage the at least two tungsten filaments in response to a tungsten filament management schedule, the tungsten filament management schedule includes controlling tungsten redeposition by the halogen regenerative cycle on each tungsten filament of the at least two tungsten filaments at least partially based on the sensor signal.

A method comprising:

• electronically initiating in response to a tungsten filament management schedule a first electric current flow through a first tungsten filament enclosed within a sealed glass envelope of a tungsten-halogen light and generating a first light;
• electronically terminating the first electric current flow upon completion of a first light-production duty cycle specified for the first tungsten filament by the tungsten filament management schedule, the first light-production duty cycle controlling tungsten redeposition by the halogen regenerative cycle on the first tungsten filament of the at least two tungsten filaments;
• electronically initiating in response to the tungsten filament management schedule a second electric current flow through a second tungsten filament enclosed within the sealed glass envelope and generating a second light;
• and
• electronically managing the terminating the first electric current flow and the initiating the second electric current flow to maintain a substantially uniform level of light generated by the tungsten-halogen light.

A system comprising:

• means for electronically initiating in response to a tungsten filament management schedule a first electric current flow through a first tungsten filament enclosed within a sealed glass envelope of a tungsten-halogen light and generating a first light;
• means for electronically terminating the first electric current flow upon completion of a first light-production duty cycle specified for the first tungsten filament by the tungsten filament management schedule, the first light-production duty cycle controlling tungsten redeposition by the halogen regenerative cycle on the first tungsten filament of the at least two tungsten filaments;
• means for electronically initiating in response to the tungsten filament management schedule a second electric current flow through a second tungsten filament enclosed within the sealed glass envelope and generating a second light;
• and
• means for electronically managing the terminating the first electric current flow and the initiating the second electric current flow to maintain a substantially uniform level of light generated by the tungsten-halogen light.