Fluorescent lamp
A fluorescent lamp and phosphor technology, applied in the field of fluorescent lamps, can solve the problems of maintaining illuminance, degradation, and difficulty in maintaining stability for a long time, and achieve the effects of extending service life, increasing light output, and high light stability
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[0022] figure 1 It is a cross-sectional view of the fluorescent lamp of the present invention.
[0023] In this figure, the fluorescent lamp 1 has a pair of external electrodes 3 and 3 arranged opposite to each other on the outer peripheral surface of the arc tube 2. The external electrodes 3, 3 have a substantially strip-like shape extending in the tube axis direction. For example, conductive films such as silver paste mixed with silver (Ag) and sintered glass, or gold paste mixed with gold (Au) and sintered glass are used. form.
[0024] The external electrodes 3, 3 are covered with protective films 4, 4 made of glass layers, and wires W1, W2 are connected to the external electrodes 3, 3, respectively, and they are connected to a power source 10 that generates a high-frequency voltage.
[0025] The above-mentioned arc tube 2 is composed of synthetic quartz glass having high transmittance to vacuum ultraviolet light having a wavelength of 200 nm or less. Furthermore, in order to m...
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