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Title: One piece microwave container screens for electrodeless lamps

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.
Authors:
 [1] ;  [2]
  1. (Myersville, MD)
  2. (Bethesda, MD)
Publication Date:
OSTI Identifier:
871858
Report Number(s):
US 5811936
DOE Contract Number:
FG01-95EE23796
Resource Type:
Patent
Research Org:
Fusion Lighting, Inc., Rockville, MD (United States)
Country of Publication:
United States
Language:
English
Subject:
piece; microwave; container; screens; electrodeless; lamps; microwave; powered; electrodeless; lamp; improved; screen; unit; mesh; solid; sections; internal; reflector; reflect; light; light-transmitting; chamber; defined; lamp; microwave; cavity; reflector; mesh; section; discharge; envelope; bulb; disposed; light-transmitting; chamber; light; emitted; envelope; prevented; reflector; entering; cavity; portion; bounded; solid; section; screen; replacing; mesh; material; solid; metal; material; screen; unit; significantly; reduces; leakage; microwave; energy; lamp; solid; section; multiple; compliant; fingers; defined; therein; engaging; periphery; flange; waveguide; unit; clamp; easily; secure; screen; assembly; screen; units; type; mesh; section; configurations; interchanged; lamp; assembly; produce; respective; illumination; patterns; reflect light; metal material; significantly reduce; electrodeless lamp; electrodeless lamp; defined therein; microwave powered; microwave energy; microwave power; microwave cavity; light emitted; solid metal; chamber defined; wave energy; significantly reduces; solid section; solid section; solid section; screen unit; screen unit; screen unit; lamp assembly; light-transmitting chamber; light-transmitting chamber; powered electrodeless; solid sections; internal reflector; improved screen; wave cavity /315/