Discharge lamp with dielectrically impeded electrodes
AssigneePatent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
InventorsFrank Vollkommer, Lothar Hitzschke
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Abstract
A discharge lamp (1) including a tubular discharge vessel (2), filled with inert gas and, optionally, a fluorescent layer, having at least three elongated electrodes (3, 4, 5) arranged parallel to the longitudinal axis of the tubular discharge vessel (2). The electrodes are arranged in such a manner that the relationship s a ≥ 0.1 is satisfied, wherein s is the maximum spacing between an imaginary connecting line of an electrode pair and the most closely neighboring point on the wall of the tubular discharge vessel, and a is the mutual spacing between the electrodes of such electrode pair. A higher luminous density is achieved in this way. The lamp is particularly advantageous for a pulsed, dielectrically impeded discharge.
Claims20
A discharge lamp (1) comprising
- an at least partially transparent, closed tubular discharge vessel (2) having an external wall, said tubular discharge vessel being filled with a gas filling, and
- three or more elongated electrodes (3-5, 9-12, 13) which are arranged parallel to the longitudinal axis of the tubular discharge vessel (2) and on the external wall of said tubular discharge vessel (2), wherein the following relationship is satisfied:
- s a ≥ 0.1
- wherein s is the maximum spacing between an imaginary connecting line (20) of a pair of electrodes (3, 4;
- 3, 5) and the most closely neighboring point of said external wall of the tubular discharge vessel (2), and
- a is the mutual spacing between the electrodes of said pair of electrodes.
Dependencies are inferred from the claim text.