• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.7 no.2
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• pp.11-18
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• 1993

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.1 no.2
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• pp.17-21
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• 1987

• KOREAN POULTRY JOURNAL
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• v.44 no.6
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• pp.151-153
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• 2012

• KOREAN JOURNAL OF CROP SCIENCE
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• v.34 no.2
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• pp.184-191
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• 1989

The effect of various supplementary light sources on the agronomic characteristics has been investigeted for generation acceleration of barley in green house with the condition of 15$^{\circ}C$ and 8 hrs. day light followed by each supplementary light sources including incandescent electric lamp (IN), Blue fluorescent lamp(BF). day-light fluorescent lamp(DF), Biolux lamp(BL), BL+BF, In+BF and IN+BL. Leaf number of main stem, leaf area, culm length, dry matter yield of shoot, number of grain per spike, grain yield per plant were most sharply decreased with the exposition of IN, while flag-leaf emergence on main stem and I, 000 grain weight were earlist and heavist respectively with the exposition of IN. In appeared to be best light source for shortening the days to heading, but IN + BF will be most desirable light source with considering both days to heading and adequate yield at the same time.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2002.11a
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• pp.261-266
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• 2002

본 연구에서는 광원의 색온도와 연색성의 차이에 의한 밝음의 느낌과 조도와의 관계를 밝히기 위하여 이종 램프간, 또한 동종 램프 간의 비교 실험을 시각 대상물로 흑백 인쇄문자지와 색상지를 사용하여 수행하였다. 현재 널리 사용되고 있는 백열전구, 형광램프, 고압 나트륨램프, 메탈핼라이드램프, 무전극 방전램프를 대상으로 실험을 수행하여, 램프 간 실험 결과의 통계처리 결과, 백열전구와 무전극 방전램프, 주광색 형광램프와 무전극 방전램프, 고압 나트륨램프와 무전극 방전램프, 메탈핼라이드램프와 무전극 방전램프는 유의수준 5[%] 이내에서 결과에 분명한 차이가 있음이 밝혀졌다.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.17 no.6
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• pp.1-6
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• 2003

We studied visual clarity according to the difference of color temperature and color rendering by using black and white printed paper and four sheets of colored paper under different kinds of lamps and same kind lamps. The results show visual clarity is proportioned to average color rendering index approximately except incandescent lamps and to color temperature under incandescent lamps, fluorescent lamps, high pressure sodium lamps, metal halide lamps and electrode less discharge lamps.

• Product Safety
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• no.10 s.154
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• pp.60-63
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• 2006

지난 호에 백열전구 및 형광램프에 대하여 알아보았다. 이번호에서는 계속해서 형관등기구의 구조 및 점등 원리 등에 대해서 알아보도록 하겠다.

• Electrical & Electronic Materials
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• v.17 no.9
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• pp.16-22
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• 2004

오늘날 반도체 기술의 획기적인 발전에 의해서 마침내 에디슨의 탄소 필라멘트 백열전구를 대체할 수 있는 "반도체 필라멘트"라 불리는 고출력 백색 LED(lighting emitting diode)가 차세대 조명광원으로 급부상하고 있다.(중략)

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.5 no.2
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• pp.49-57
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• 1991

A simple system to measure the correlated color temperature ($T_c$) and color rendering index ($R_a$) oflight sources was developed. And the T, and R, of incandescent lamps (I/L) and various fluorescent lamps(F/L) were measured with varying source voltage and power frequency. As results, $T_c$ variations of I/L and F/L with varying source voltage were relatively large, but $R_a$, variations were small. And $T_c$, $R_a$, variations of F/L under 5OkHz of power frequency were small, but over 50kHz, it is supposed that $T_c$, and $R_a$, will vary significantly.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.29 no.7 s.238
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• pp.921-929
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• 2005

This paper presents an accelerated life test for burnout of tungsten filament of incandescent lamp. From failure analyses of field samples, it is shown that their root causes are local heating or hot spots in the filament caused by tungsten evaporation and wire sag. Finite element analysis is performed to evaluate the effect of vibration and impact for burnout, but any points of stress concentration or structural weakness are not found in the sample. To estimate the burnout life of lamp, an accelerated life test is planned by using quality function deployment and fractional factorial design, where voltage, vibration, and temperature are selected as accelerating variables. We assumed that Weibull lifetime distribution and a generalized linear model of life-stress relationship hold through goodness of fit test and test for common shape parameter of the distribution. Using accelerated life testing software, we estimated the common shape parameter of Weibull distribution, life-stress relationship, and accelerating factor.