| 摘要 |
FIELD: electrical engineering. SUBSTANCE: luminous element 4 is sealed in bulb of optically transparent material and presents porous rod of refractory metal or rod of high-temperature material with porous layer 8 of refractory metal deposited on it. Cross-section of rod presents multi-pronged star. prongs 5 of rod of luminous element 4 are sources of visible light 6 and infrared radiation 7. EFFECT: enhanced operational efficiency of filament lamp, decreased requirement for manufacturing precision, increased mechanical strength of luminous element and prolonged service life of it. 3 dwg |
