Electricity: measuring and testing – Electric lamp or discharge device – Vacuum tube
Reexamination Certificate
2008-05-06
2008-05-06
Nguyen, Vincent Q. (Department: 2858)
Electricity: measuring and testing
Electric lamp or discharge device
Vacuum tube
C324S409000, C315S135000
Reexamination Certificate
active
07368916
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.
REFERENCES:
patent: 2794946 (1957-06-01), Larsen
patent: 5055743 (1991-10-01), Elstrand
patent: 5808422 (1998-09-01), Venkitasubrahmanian et al.
patent: 6285138 (2001-09-01), Kataoka et al.
patent: 6294883 (2001-09-01), Weindorf
patent: 6339299 (2002-01-01), Wu et al.
patent: 2003/0057814 (2003-03-01), Garner
patent: 2003/0160574 (2003-08-01), Gray
patent: 2003/0168994 (2003-09-01), Grabner et al.
patent: 2005/0088102 (2005-04-01), Ferguson et al.
patent: 2005/0093462 (2005-05-01), Waymouth et al.
patent: 2005/0134184 (2005-06-01), Abiko
Hammer, E.E., “Cathode Fall Voltage Relationship with Fluorescent Lamps”,IESNA Conference, Miami Beach FL, 1994, (Published Version)- Journal of the Illuminating Engineering Society, Winter 1995, 116-122.
Hammer, E.E., “Comparative Starting Characteristics in Typical F40 Systems”,IESNA ConferenceMinneapolis MN, 1988, (Published version)- Journal of the Illuminating Engineering Society, Winter 1989, 63-69.
Ligthart, F.S. et al., “Additional Electrode Heating during Dimming of HF Operated Fluorescent Lamps”5thInternational Symposium on Science and Technology of Light Sources, (LS-5), 1989, Paper 17L, York England.
Waymouth, J.F., “Electric Discharge Lamps”, 1971,Mit Press, Chapter IV and Appendix B, 69-112.
Schenkelaars, H.J.W. et al., “Zero Field Thermionic Emission in HF Operated Fluorescent Lamps”,5thInternational Symposium on Science and Technology of Light Sources, (LS-5), Sep. 10-14, 1989, York England, 1 page.
DeMeo Renzo Corrado
Hartfield Mark Alan
Khan Farheen
MacAdam Russell Lawrence
Nachtrieb Robert Thomas
Lutron Electronics Co. Inc.
Nguyen Vincent Q.
Woodcock & Washburn LLP
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