Discharge lamp, particularly low-pressure discharge lamp

Abstract

The invention relates to a discharge lamp, particularly a low-pressure discharge lamp, comprising a discharge vessel (2), two electrodes (3, 4) located at least in part inside the discharge vessel (2), and a first coating (9) which is disposed in at least some areas on an external face (23) of the discharge vessel (2) and is embodied at least as a spectral filter for the light generated in the discharge vessel (2). A second coating (10), which is configured as an antioxidant layer for the first coating (9), is embodied in at least some areas on the first coating (9).

Description

technical field

[0001] The invention relates to a discharge lamp, in particular to a low-pressure discharge lamp having a discharge vessel and two electrodes arranged at least partly in the discharge vessel and a first electrode arranged at least partly on the outside of the discharge vessel. A coating which is designed at least as a spectral filter for the light generated in the discharge vessel. Background technique

[0002] Discharge lamps, in particular fluorescent lamps, having an outer coating are known. For relatively low-load discharge lamps, ie lamps with a discharge current of, for example, less than 200 mA, it is known that the outer coating consists of plastic. The outer coating can consist, for example, of polycarbonate or polyolefin or polyester, which can also perform the function of a spectral filter, in particular of UV (ultraviolet) protection and of other color effects. For these relatively low-load discharge lamps, the plastic coating mentioned can also...

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