Methods and apparatus for generating ultraviolet light
AssigneeJenAct Limited
InventorsDavid Briggs, Richard Little
Life of this patent
Estimating the term…
Abstract
A housing for an elongate electrodeless bulb which is energiseable by an rf field such as a microwave field, preferably at or around 2.45 GHz. The housing is constructed of electrically conductive material and is arranged to have a substantially unobstructed opening through which the bulb is visible from outside the housing, and the housing is arranged to hold the bulb in a position which is recessed into the housing such that in use, the bulb is energized by virtue of its position within the housing and adjacent surrounding conductive parts of the housing substantially attenuate the rf field near the opening so that the rf field strength outside the housing is substantially zero whereby visible light or UV light is freely allowed out through the opening.
Claims14
A housing for a coaxially mounted elongate electrodeless bulb which is energizable by an rf field, such as a microwave field, preferably at or around 2.45 GHz, wherein:
- the housing is constructed of electrically conductive material arranged to have a substantially opening through which the bulb is visible from outside the housing;
- and wherein the housing is arranged to hold an electrodeless bulb in a position which is recessed into the housing such that in use, the electrodeless bulb is energized as a result of its position within the conductive housing and the housing is dimensioned to extend beyond the end of the bulb sufficiently such that the adjacent parts of the housing beyond the end of the bulb operate beyond cut-off and thus prevents any emission of microwave energy.
Dependencies are inferred from the claim text.