One piece microwave container screens for electrodeless lamps

Details One piece microwave container screens for electrodeless lamps One piece microwave container screens for electrodeless lamps

1996-01-26

1998-09-22

Lee, Benny T.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Distributed parameter resonator-type magnetron

315248, H01J 6504

Patent

active

058119361

ABSTRACT:
A microwave powered electrodeless lamp includes an improved screen unit having mesh and solid sections with an internal reflector to reflect light into a light-transmitting chamber defined in the lamp microwave cavity by the reflector and the mesh section. A discharge envelope of a bulb is disposed in the light-transmitting chamber. Light emitted from the envelope is prevented by the reflector from entering the cavity portion bounded by the solid section of the screen. Replacing mesh material by solid metal material as part of the screen unit significantly reduces leakage of microwave energy from the lamp. The solid section has multiple compliant fingers defined therein for engaging the periphery of a flange on the waveguide unit so that a hose clamp can easily secure the screen to the assembly. Screen units of this type having different mesh section configurations can be interchanged in the lamp assembly to produce different respective illumination patterns.

REFERENCES:
patent: 4673846 (1987-06-01), Yoshizawa et al.
patent: 4695694 (1987-09-01), Hill et al.
patent: 4954755 (1990-09-01), Lynch et al.
patent: 5227698 (1993-07-01), Simpson et al.
patent: 5334913 (1994-08-01), Ury et al.
patent: 5404076 (1995-04-01), Dolan et al.

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