FIELD: lighting engineering. SUBSTANCE: lamp has bulb holding filler that incorporates sulfur, selenium and/or tellurium. Ratio of bulb volume to its surface area is at least 0.45 cm, sulfur, selenium, and/or tellurium concentration in filler composition is not over 1.75 mg/cu. cm; power supplied to filler per unit of bulb volume is between 5 and 100 W/cu. cm. EFFECT: enhanced efficiency of lamp. 2 cl, 5 dwg, 3 ex
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