Electric lamp and discharge devices – With gas or vapor – Having a particular total or partial pressure
Reexamination Certificate
2006-05-02
2006-05-02
Patel, Ashok (Department: 2879)
Electric lamp and discharge devices
With gas or vapor
Having a particular total or partial pressure
C313S630000, C313S631000, C313S633000
Reexamination Certificate
active
07038379
ABSTRACT:
A high pressure discharge lamp includes a quartz glass bulb, a conductive element which is sealed at a sealing portion of the bulb, and a pair of electrodes. Each electrode is disposed in the quartz glass bulb so as to be opposite the other and connected to the conductive element. A part of each electrode is sealed with the quartz glass bulb at the sealing portion so as to generate a contacting portion formed by the part of each electrode and the bulb. The maximum length, Lmax, of the contacting portion is defined as: Lmax(mm)≦200/(P×D); and the minimum length, Lmin, of the contacting portion is defined as: Lmin(mm)≧0.8/(D2×π) or Lmin(mm)≧0.7 whichever is longer, where D is the diameter (mm) of the electrode and P is the power (W) supplied to the electrode.
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Nishida Kazuhisa
Uchikawa Tatsuya
McGinn IP Law Group PLLC
NEC Microwave Tube, Ltd.
Patel Ashok
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