Lamp
AssigneeCeravision Limited
InventorsAndrew Neate, Charles Guthrie
Life of this patent
Estimating the term…
Abstract
A lamp with a quartz electrodeless bulb has a ceramic wave guide with a central void, in which the bulb is accommodated. The wave guide is rectangular. The central void is centered on a central longitudinal plane of the wave guide, normal to front and back faces of the wave guide and equally spaced from end faces. Parallel with the central void and also on the central plane are two further voids for respective antennae. The central void is open through the front face for egress of light, but the antenna voids are not open in this face. The latter is metalised to inhibit egress of microwave energy from the wave guide.
Claims22
A lamp having an electrodeless bulb, the lamp comprising:
- a drive device adapted to drive at least two antennae;
- a ceramic wave guide;
- at least two respective voids receiving the said antennae in the wave guide;
- and
- a central void in the wave guide, for receiving the bulb, equally spaced from the antenna voids, the central void having:
- a clearance diameter with respect to the bulb and
- a physical opening through which light can pass from the bulb and out of the wave guide.
Dependencies are inferred from the claim text.