Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit
Reexamination Certificate
2007-08-21
2007-08-21
Owens, Douglas W. (Department: 2821)
Electric lamp and discharge devices: systems
With cathode or cathode heater supply circuit
C315S224000, C315S291000
Reexamination Certificate
active
11201936
ABSTRACT:
Apparatus and methods for measuring cathode fall in fluorescent lamps are disclosed. Together with measurements of cathode temperature, such measurements of cathode fall may inform a determination of cathode heater voltage as a function of discharge current (i.e., a cathode-heating-profile) that avoids both sputtering and excess-evaporation.
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DeMeo Renzo Corrado
Hartfield Mark Alan
Khan Farheen
MacAdam Russell Lawrence
Nachtrieb Robert Thomas
Lutron Electronics Co. Inc.
Owens Douglas W.
Vu Jimmy
Woodcock & Washburn LLP
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