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US 2015/0022082 A1Published application
Dielectric barrier discharge lamps and methods
OwnerBrady Hauthinventor
Life of this patent
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Abstract
Electric lamps wherein material inside a bulb is excited using capacitive coupling through the bulb wall to external electrodes, forming plasma which emits light. Methods described include use of light-emitting material including sulfur and/or selenium, and a circuit for driving the external electrodes.
Claims12
An electric lamp comprising:
- a transparent or translucent bulb;
- material inside the bulb which emits light when electrically excited and which includes sulfur and/or selenium as a vital component;
- capacitive couplings between electrodes and said material inside the bulb through the wall of the bulb and/or an insulating barrier other than the wall of the bulb, which are electrically driven to create an electric discharge inside the bulb, and which serve as the primary means of energy transfer to material inside the bulb during normal operation after startup;
- and a drive circuit used to drive said capacitive couplings.
1 more element
An electric lamp comprising:
- a transparent or translucent bulb;
- material inside the bulb which emits light when electrically excited;
- capacitive couplings to the material inside the bulb which are electrically driven to create an electric discharge inside the bulb;
- and a drive circuit comprising:
- two capacitors in series across conductors carrying DC input power;
- semiconductor switches connecting said conductors to the first connection point of the primary winding of a transformer;
- a conductor connecting the second connection point of the primary winding of said transformer to the center point of said pair of capacitors in series;
- an inductor in series with the secondary winding of said transformer;
- and conductors connecting said capacitive couplings to the ends of said inductor and said transformer secondary winding which are not connected to each other.
6 more elements
Dependencies are inferred from the claim text.