04180763 is referenced by 22 patents and cites 6 patents.

Novel geometries for high intensity discharge solenoidal electric field lamps are disclosed providing good coupling between the magnetic fields within the ferrite and the plasma discharge. In addition, the geometries provide for good heat sinking and cooling capabilities as well as escape of most of the generated light. In accordance with one embodiment of the present invention, a plurality of toroidal shaped ferrite cores are arranged about the high intensity discharge tube, the tube being threaded through the holes in the toroidal ferrite cores. In accordance with another embodiment of the present invention, a bundle of ferrite rods is disposed through the hole of a toroidal shaped discharge tube, the packing density of the ferrite rods in the bundle being less than one hundred percent efficient whereby channels for cooling air are formed.

Title
High intensity discharge lamp geometries
Application Number
5/872153
Publication Number
4180763
Application Date
January 25, 1978
Publication Date
December 25, 1979
Inventor
John M Anderson
Scotia
NY, US
Agent
Marvin Snyder
Joseph T Cohen
Lawrence D Cutter
Assignee
General Electric Company
NY, US
IPC
H05B 41/24
H05B 41/16
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