| 摘要 |
<p>A lighting unit according to the invention comprises an electrodeless low-pressure discharge lamp (10) provided with a discharge vessel (20) enclosing a discharge space (21) with an ionizable filling in a gastight manner. The discharge vessel (20) has a recessed portion (22) and an enveloping portion (23) which transmits radiation generated in the discharge vessel (20). Means (30) are present in the recessed portion (22) for initiating and maintaining an electric discharge in the discharge space (21). The means (30) comprise a member (31) for generating an electric field in the discharge space. The recessed portion (22) is provided with a luminescent layer (25), which his subdivided into mutually separated regions 25A-25D, at a surface (24) facing the discharge space (21). The lighting unit further comprises a supply unit (40) for supplying the means (30). The lamp (10) of the lighting unit according to the invention has a comparatively low ignition voltage.</p> |
