Excitation coil for hid electrodeless discharge lamp
First Claim
Patent Images
1. An excitation coil, for stimulating a high intensity discharge plasma in an electrodeless discharge lamp, comprising:
- at least one turn of a conductor arranged generally upon an exterior surface of a torus having a substantially V-shaped cross-section; and
means for tuning the inductance of the toroidal conductor to a desired resonance frequency.
1 Assignment
0 Petitions
Accused Products
Abstract
An excitation coil, for stimulating a high-intensity-discharge plasma in an electrodeless discharge lamp, has at least one turn of a conductor arranged generally upon the surface of a toroid with a rhomboid or V-shaped cross-section, which is substantially symmetrical about a plane passing through the maxima of the toroid. The major radius of the coil is such that the lamp is insertable into the coil so that the coil induces a co-planar toroid plasma discharge arc in the lamp, when the coil is connected to a radio frequency (RF) power source.
-
Citations
20 Claims
-
1. An excitation coil, for stimulating a high intensity discharge plasma in an electrodeless discharge lamp, comprising:
-
at least one turn of a conductor arranged generally upon an exterior surface of a torus having a substantially V-shaped cross-section; and means for tuning the inductance of the toroidal conductor to a desired resonance frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A lamp, comprising:
-
an HID tube having an exterior surface; and an excitation coil positioned adjacent to said tube exterior surface for producing a discharge arc plasma in the tube, said coil having at least one turn of a conductor arranged generally upon an exterior surface of a torus having a substantially V-shaped cross-section. - View Dependent Claims (19, 20)
-
Specification