High efficiency gas filled lamp
AssigneeYehi-Or Light Creation Ltd.
InventorAvraham EMANUEL
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Abstract
The invention relates to a gas filled lamp and to a method of operating the same, the gas filled lamp including a tube filled with a gas or combination of gases, the tube comprising an anode; and a cathode spaced apart from the anode wherein an electric field can be applied across the anode and the cathode so as to cause an electron to move from the cathode to the anode. The gas filled lamp further includes magnetising means to provide a magnetic field across the tube, the direction of the magnetic field being substantially perpendicular to the direction of the electric field, wherein the ratio between the electric and magnetic fields is substantially predetermined depending upon the gas or combination of gases within the tube.
Claims22
-12. (canceled)
A lighting tube having a first and a second end and comprising:
- a field anode and a field cathode arranged lengthwise along said tube to provide an electric field;
- magnets arranged lengthwise along said tube to provide a magnetic field, said magnets being arranged such that said magnetic field is substantially perpendicular to said magnetic field;
- said electric and magnetic fields together providing an electron path lengthwise along said tube.
A lighting tube having a first end and a second end, and a longitudinal length therebetween, and comprising an electron path along said longitudinal length set up for electrons emitted at said first end to travel from said first end to said second end.
A method of providing lighting comprising:
- in a confined space having a longitudinal length:
- providing an electrical field;
- providing a magnetic field orthogonally to said electrical field to provide a path for electrons;
- selecting values of said fields to limit electron kinetic energy of electrons travelling in said path to excitation energies of photons of a desired wavelength, thereby to provide efficient conversion of electron collisions to photons;
- and
- providing a source of electrons for said path.
A gas filled lamp comprising:
- a tube filled with a gas or combination of gases, the tube comprising:
- an anode extending substantially along the length of the tube;
- and
- a cathode spaced apart from the anode, and extending substantially along the length of the tube, wherein an electric field can be applied between the anode and the cathode so as to cause an electron to move from the cathode in the direction of the anode;
- and
- at least one magnet to provide a magnetic field along the length of the tube, the direction of the magnetic field being substantially perpendicular to the direction of the electric field, such that relatively perpendicular magnetic and electrical fields provide a controlled energy electron path along the length of the tube.
A method of operating a gas filled lamp, the gas filled lamp comprising a tube filled with a gas or combination of gases, the method including
- applying an electric field across an anode and a cathode set out along a length of the tube so as to cause an electron to move from the cathode towards the anode;
- and
- applying a magnetic field across the length of the tube by way of a magnetizing means, wherein the magnetic field applied is substantially perpendicular to the direction of the electric field such that relatively perpendicular magnetic and electrical fields provide a controlled energy electron path along the length of the tube.
Dependencies are inferred from the claim text.