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AssigneeUshiodenki Kabushiki Kaisha
InventorsAkiyasu Yamaguchi, Yukio Yasuda, Tsuneo Okanuma, Tatsushi Igarashi, Hiromitsu Matsuno, Tatsumi Hiramoto
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An emission device which operates a cadmium lamp with a light intensity sufficient for used in industrial applications is achieved by an emission device having a cadmium lamp with a fluorescent tube within which a cathode and an anode are space a small distance apart and a buffer gas for easier initiation of luminous operation and metallic cadmium in an amount per unit volume of the fluorescent tube of 1.times.10.sup.-4 g/cm.sup.3 to 3.times.10.sup.-3 g/cm.sup.3 are encapsulated, and a power source device for supplying an electrical input between the cathode and the anode in an electrical input range from 0.5 kW to 5.0 kW with the condition: 6.03+2.79 W.ltoreq.r.ltoreq.40 being satisfied, where the electrical input of the power source device into the cadmium lamp in steady-state luminous operation is W (kW) and the maximum inside radius of the fluorescent tube is r (mm).
An emission device comprising a cadmium lamp having a fluorescent tube within which a cathode and an anode are spaced apart with respect to one another and a buffer gas for easier initiation of luminous operation and metallic cadmium in an amount per unit volume of the fluorescent tube of 1.times.10.sup.-4 g/cm.sup.3 to 3.times.10.sup.-3 g/cm.sup.3 are encapsulated, and a power source device for supplying electrical input between the cathode and the anode in an electrical input range from 0.5 kW to 5.0 kW and in accordance with the relationship:
Dependencies are inferred from the claim text.