The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Characteristic Change of Electrodeless Sulfur Lamp Induced by Adding of Nal

전구내 NaI 첨가에 의한 무전극 황전등의 특성 변화

  • Goo, Sun-Geun (Electric Power Research Center of Korea Electric Power Research Institute) ;
  • Park, Gi-Jun (Electric Power Research Center of Korea Electric Power Research Institute) ;
  • Chu, Jang-Hee (Electric Power Research Center of Korea Electric Power Research Institute)
  • Published : 1999.11.01
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Abstract

We developed the correlated color temperature (CCT) control technique for electrodeless sulfur lamp (ESL) by adding a few milligrams of NaI into sulfur discharge bulb. Nal produces intense Na D-line that changes the CCT of the ESL. We can adjustthe CCT in the range of 8,400 K to 3,600 K. Color rendering index can be maintained between 79 and 90 for the adjustable range of the CCT. the NaI helps the ESL dischargeable at below 0.5 kW of forward microwave power into the bulb. We have shown that this technique did not cause reduction of luminance compared to electrodeless elemental sulfur lamp.

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References

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