• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
• /
• 2009.10a
• /
• pp.169-172
• /
• 2009

Daylight responsive dimming system, which is one of the method for utilizing available daylight. continuously adjusts lighting output with an algorithm of the correlation of photosensor signal and workplane illuminance levels. This system must be related with shading systems which are to control penetrating daylight. The purpose of this research is to analyze illuminance distributions by artificial lighting in different shading systems. Lighting power is changed by 5 levels in nighttime for comparing correlation between illuminance and lighting power in different shading systems.

• Proceedings of the Korean Information Science Society Conference
• /
• 2012.06d
• /
• pp.381-383
• /
• 2012

식물재배용 인공광 최적 배치에 따른 균일한 조도 분포는 고품질의 식물 생산을 가능하게 한다. 그러나 기존에 상용화된 식물재배시스템의 경우, 인공광 배치에 따른 조도 분포 시뮬레이션 등의 전처리 과정이 생략된 채 제작되어 생산 품질의 편차를 초래하는 문제점을 가지고 있다. 이에 본 논문은 식물재배단의 광 균일도 향상을 위해 조명 설계 소프트웨어인 Relux를 이용하여 LED 조명장치의 높이, 간격 등의 배치를 달리함에 따라 변화하는 각 재배단의 조도 분포 및 균일도, 그리고 전체 에너지 소비량 등을 사전에 시뮬레이션 함으로써 대상 식물재배에 적합한 조명장치의 최적 위치를 파악하고자 한다. 또한, 포터블 조도측정기를 이용하여 재배단의 각 식물의 위치를 기준으로 실 측정한 결과 데이터와 비교 분석 과정을 거쳐 본 시뮬레이션 결과의 신뢰도를 입증하고자 한다.

• Korean Institute of Interior Design Journal
• /
• no.27
• /
• pp.51-56
• /
• 2001

The idea to improve the quality of lighting design in interior spaces has gained importance in the last years. This experimental study concentrates on the quality of lighting and the relation between lighting arrangements and perception. A individual office room having four different lighting arrangements was prepared and the differences between the perception of the participants under each lighting arrangement was evaluated. The results suggested that lighting system and arrangements affect interior perception. Wall washing enhanced the impressions of clarity and order, cove lighting enhanced the ceiling higher respectively and other and tungsten-halogenated uplighting made the same space relaxing, private and pleasant.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.18 no.8
• /
• pp.350-354
• /
• 2017

In this study, the DIAlux program was simulated for the optimal conditions of daylight and artificial light sources(LED) in a glass greenhouse. From the results of the daylight simulation, the optimal design conditions for the glass greenhouse were established, which had a $90^{\circ}$ installation angle and a higher transmittance of glass. In the case of growing lettuce in a glass greenhouse, it was compared with artificial light sources, the artificial light source (LED) was used to produce a power consumption effect of 41%. These results suggest that lettuce be grown in an energy saving glass greenhouse.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
• /
• 2004.05a
• /
• pp.229-234
• /
• 2004

조명기술의 발전에 따라 현대의 조명환경에는 다양한 종류의 광원이 사용되고, 박물관 등에서는 조명에 의한 다양한 연출 효과를 얻기 위해 같은 전시 공간 내에서도 여러 종류의 광원들을 사용한다. 광원마다 전시물에 유해한 성분의 복사비율이 다르고, 여러 성분의 복사에너지가 복합적으로 전시물에 입사되기 때문에 전시물의 관리에 많은 어려움이 따른다. 따라서 박물관에서 전시물의 손상이 어느 정도 일어날 수 있을지를 예측하고, 그에 대한 적절한 대책을 수립하는 등의 박물관 조명의 효과적인 실시를 위해서는, 전시물에 조사되는 광복사량 및 복사분포를 측정하고, 이를 바탕으로 적절한 조명의 형식과 누적조도로서 각 유물을 체계적으로 관리할 수 있는 유지관리 방안을 설정할 필요가 있다. 본 연구에서는 전시조명용으로 많이 사용되는 인공광원과 자연주광을 대상으로, 이들 광원들이 방출하는 복사조도와 자외선을 포함하는 광복사량, 광원의 분광분포 등을 측정하고 그 결과를 분석하였다.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.19 no.3
• /
• pp.1-9
• /
• 2005

Light is an important environmental element for people to live and do creative activities in residential areas. Especially, people are used to live under artificial light in artificial interior surroundings for the most times. Currently, the lighting quality of residential areas has been improved, but it still does not reach to the recommended level because the luminous environment of present residential areas is only based on the life behavior which puts its priority to clear vision. Therefore, it is necessary that proper standard illumination must be used for various uses and purposes. From this point of view, this paper investigated the essence of light in residential areas, and the luminous environment for apartments was measured This paper finally established well-coordinated standard illuminance, derived from the measurement and analysis of luminous environment from these cases.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.22 no.12
• /
• pp.10-19
• /
• 2008

Daylight responsive dimming systems are energy saving systems using available daylight. It is not popular to be adopted in buildings because of blocked daylight by shading systems. Therefore, both daylight responsive dimming systems and automated roller shading systems should be integrated. In this research, prediction process of yearly lighting energy savings is developed for application integrated systems in buildings, and then the process is applied to an example building. The predicted data which are yearly lighting energy savings using developed process in a building are useful as a part of feasibility study for determination of application of such integrated systems.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.22 no.12
• /
• pp.20-28
• /
• 2008

It is prevalent to research on the energy saving systems using daylight. Daylight responsive dimming systems are to automatically control lighting output by available daylight for maintaining target illuminance on the workplane. The system application is not popular because of blocked daylight by shading systems. Automated roller shading systems automatically control shade height by sun position and sky conditions. Both daylight responsive dimming systems and automated roller shading systems should be integrated for energy savings and visual luminous environment. In this research, software are developed and integrated for control of integrated systems.

• Journal of Dental Rehabilitation and Applied Science
• /
• v.30 no.4
• /
• pp.289-298
• /
• 2014

Purpose: This study was designed to investigate the present conditions of illumination techniques in dental laboratories in order to distinguish colors for esthetic dentistry. Materials and Methods: A total of forty-eight local dental laboratories were selected for sampling a) luminous intensity and b) color temperature. We measured the luminous intensity and the color temperature on a center point of porcelain table with lux meter and color meter respectively. The measurements were performed twice, once on a clear day and on a cloudy day between 12 pm and 2 pm (day light and artificial illumination) and between 7 pm and 10 pm (artificial illumination only). Results: The results obtained were as follows. 1. The average luminous intensity in dental laboratories lighting was 1871 lx, and 67% of dental laboratories had luminous intensity greater than 1600 lx, which was appropriate for operations related to colors, while 33% of dental laboratories had in sufficient lighting for appropriate luminous intensity. 2. The average color temperature in dental laboratories lighting was 6506 K, which was inappropriate for operations related to color. None of the dental laboratories had a color temperature range of 5000 - 5500 K, which is appropriate for operations related to colors. 3. Between daytime and nighttime, also between clear day and cloudy day, the average luminous intensity and color temperature in dental laboratories were not significantly different. Conclusion: Illumination in most dental laboratories selected in this study was inappropriate for operations related to color.

• Journal of the Speleological Society of Korea
• /
• v.44 no.45
• /
• pp.29-40
• /
• 1996

동굴환경의 주요특성은 첫째 광선이 차단되어 암흑상태이며 둘째, 내부 습도가 높고 기온이나 수온이 연중 변화가 심하지 않으며 셋째, 먹이연쇄에 필수적인 영양공급원이 제한되어 있다. 따라서 광합성 작용으로 생장하는 녹색식물은 태양광선이 유입되는 곳이나 인공조명 시설지역을 제외한 곳에서는 서식이 불가능하고 대형동물이나 초식동물은 생존이 어렵다.(중략)