BULB OF ELECTRODELESS DISCHARGE LAMP

摘要

PURPOSE: A bulb of an electrodeless discharge lamp is provided to obtain multiple structure electrodeless discharge lamp, prevent thermal diffusion due to air convection and conduction, and integrate a reflecting mirror in a bulb. CONSTITUTION: A bulb of an electrodes discharge lamp comprises an inner discharge bulb(1) fixed to a supporting rod(2), an outer bulb(11) surrounding the inner discharge bulb(1) and fixed to the supporting rod(2). The space between the inner discharge bulb(1) and the outer bulb(11) is in a vacuum state to prevent air conduction and convection. A reflecting mirror(12) is formed by thinly coating a reflecting dielectric material at a part of the outer surface of the outer bulb(11). The reflecting mirror(12) concentrates or transmits light generated from the inner discharge bulb(11) and formed except for the front part of the outer surface of the outer bulb(11).