Mercury vapour lamp with solid-body recombination structure - is excited by HF energy in discharge space contg. fibre with specified surface-vol. ratio

摘要

A flat rectangular bulb (1) of glass is coated internally with a protective layer of e.g. SiO2 (2) and a fluorescent aluminate layer (3). It filling comprises 1mg of Hg in excess and 2 torr Ne. The recombination structure (4) of rockwool is distributed in the discharge space to the extent of 0.1mg per c.c. with an average fibre dia. of 12 microns. Outer electrodes (5) of e.g. Cu sheet are connected to a generator (6) of 13.56 MHz frequency. USE/ADVANTAGE - Esp. with capacitively coupled lamps. The density of illumination when the power density is increased shows practically no saturation.