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R,G,B LED 조명기구를 이용한 Natural Color 구현에 관한 연구
정연홍(Yeon-Hong Jung),김유신(Yu-Sin Kim),박병철(Byoung-Chul Park),최안섭(An-Seop Choi) 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.5월
Recently, as development of the luminaire industry, many people are interest of the outdoor and indoor lighting environment. Also, as increasing of people activity at night, the role of lighting is more important. In these days, the issue of LEDs lighting environment is' using loud colors of LEDs which are the most of primary colors (R, G, B). It is often disliked by same people. Therefore, it is necessary to use of natural color in lighting design using LEDs. The colors of the LEDs are composed of combination of R, G, B diodes. This paper performs to investigate preference of various colors and color patterns of LEDs. The purposes of this study are to suggest standardization and natural colors instead of primary colors using LEDs.
정연홍(Jung Yeon-Hong),박병철(Park Byoung-Chul),최안섭(Choi An-Seop) 대한건축학회 2010 대한건축학회논문집 Vol.26 No.2
The experiments of three stages were performed to examine on the realization of Natural Colors of six color series(R, G, B, C, M, Y) and White color using R, G, B LEDs in this research. 1) When Natural Colors using R, G, B LEDs were realized with control software developed by manufacture in first stage, six color series had range of errors from 0.0499 to 0.1381. 2) When R, G, B of LEDs were mixed at the ratio (1:4.5907:0.0601) of Three Component Theory for realization of White in second stage, White was not realized to excitation purity. The second experiment was performed with corrected ratio (1:1.9960:0.2000). 3) Derived correction based on ratio of control steps of R, G, B LEDs was used for third stage. The six color series had range of errors from 0.0056 to 0.0140 in third experiment. Therefore, R, G, B LEDs’ system should be used with correction based on ratio of control steps developed by manufacture for color realization.
사무공간에서 형광램프 조명기구와 백색 LED 조명기구의 색온도 비교를 통한 선호도에 관한 연구
정연홍(Yeon-Hong Jung),김유신(Yu-Sin Kim),최안섭(An-Seop Choi) 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.5월
The purpose of this study is to investigate the luminous environment of fluorescent lamp and LED lamp in a office space for various color temperature by subject response test. For this, three different color temperatures were tested for the same illuminance level. Based on such test results for various color temperatures of fluorescent lamp and white LEDs, this study is to analyze the preferences of color temperature and light source, and perceptional brightness of each light source and color temperature. Then, this study is to derive the guidelines for the performance of color temperature which are suitable on the purpose and the mood of a office space.
정연홍(Yeon-Hong Jung),박병철(Byoung-Chul Park),김유신(Yu-Sin Kim),홍성관(Seong-Kwan Hong),최안섭(An-Seop Choi) 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.10월
One of the purposes of architectural lighting is to give pleasure and pride to people. Government often encourages to building owners to apply architectural lighting as a policy because architectural lighting can be one of the tourist attractions. The characteristics of a building, a city and a nation should be reflected to architectural lighting design. Therefore, the purpose of this research is to analyze and compare architectural lighting of buildings in Las Vegas and Shanghai using measured luminance and nighttime image.
홍콩, 상해, 서울의 사무소 건축물 경관조명 비교 분석
정연홍(Yeon-Hong Jung),임지선(Ji-Sun Lim),김현선(Hyun-Sun Kim),김유신(Yu-Sin Kim),최안섭(An-Seop Choi) 한국조명·전기설비학회 2009 한국조명·전기설비학회 학술대회논문집 Vol.2009 No.5월
Architectural lighting is an important factor to inform brand image to public for a headquarter building at night. The government encourages to clients to apply architectural lighting to their buildings for the nightscape. In these days, variable lightings and lighting designs are applied to a building in the world. Therefore, the purpose of this study is to analyze and compare architectural lighting design on the various office buildings in HongKong, Shanghai and Seoul with measured luminance and photographic images at night-tine.
유세준(Se Joon You),정연홍(Yeon Hong Jung),장우진(Woojin Jang) 한국조명·전기설비학회 2011 한국조명·전기설비학회 학술대회논문집 Vol.2011 No.5월
LED를조광할경우junction 온도의변화로출력광의색온도가변화하게된다. LED를조광하는 방법에 따라 같은 실효값을 가지는 전류에서도 색온도의 차이가 예상되며 이를 실험을 통하여 알아보았다.
홍성관(Seong-Kwan Hong),임지선(Ji-Sun Lim),정연홍(Yeon-Hong Jung),김유신(Yu-Sin Kim),최안섭(An-Seop Choi),권준범(Joon-Bum Kwun) 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.10월
According to the conversion of building into skyscraper, most buildings have curtain wall structures, so the shading device of building is required. The types of shading systems are a roller shade, venetian bind, and vertical blind and so on. A roller shade is mostly used among the shading systems. An experimental evaluation was verified whether there was an effect of shading materials(Perforated panel, Fabric) in each condition by an experiment with artificial lighting and daylight.
최안섭(An-Seop Choi),정연홍(Yeon-Hong Jung) 한국조명·전기설비학회 2009 조명·전기설비학회논문지 Vol.23 No.12
미국의 라스베가스, 중국의 상해와 홍콩은 많은 관광객들이 찾는 명소로 다양한 기법과 방식을 사용한 경관조명이 복합적으로 어우러져 있는 세계적으로 야경이 유명한 도시이다. 이러한 3개 도시를 대상으로 건물 야간경관조명의 조명 방식과 조명 기법을 조사하였으며, 건물의 최대?최소 벽면휘도, 부분적인 발광광고물에 대한 휘도를 측정하였다. 그리고, 현재 사용되고 있는 CIE 휘도 기준과 IES 권장 최대 휘도비에 대한 기준을 바탕으로 각 도시별, 건물별 벽면휘도의 절대값, 상대값의 비교를 통해 도시별 경관조명 특성을 분석하였다. Tourist cities as like Las Vegas in USA, Shanghai and Hong Kong in China show various architectural outdoor lighting methodologies and techniques. For these three cities, architectural outdoor lighting methods and techniques were investigated, and the luminous values of advertising illuminants as well as the maximum and minimum luminous values on the walls were measured. Then, based on current CIE luminance standard and IES recommended luminance ratio, characteristics of architectural outdoor lighting in each city are analyzed through the absolute and relative measured luminance values.
창덕궁 낙선재의 빛환경 성능 측정 및 분석에 관한 연구
김유신(Yu-Sin Kim),임지선(Ji-Sun Lim),정연홍(Yeon-Hong Jung),한욱(Wook Han),최안섭(An-Seop Choi) 한국조명·전기설비학회 2009 조명·전기설비학회논문지 Vol.23 No.2
본 연구의 목적은 한국의 궁궐건축 빛환경 성능을 측정하고 분석하고자 하며, 현재까지 가장 보존이 잘되어 있는 창덕궁 낙선재를 선택하였다. 조도 분포와 휘도 분포를 측정한 결과, 처마에 의해 직사일광의 유입이 차단되는 것을 알 수 있었으며, 밝은 색의 마당 등에 의한 반사광이 실내 깊숙이 유입되는 것을 알 수 있었다. 그리고 창호의 겹 수가 증가함에 따라 실내의 주광 분포는 균일하고 변화가 적음을 알 수 있었다. 또한 창호의 표면의 휘도분포는 윗부분 보다 아랫부분의 휘도가 높게 나타났으며 이는 처마에 의해 직사일광이 차단되기 때문이다. 본 연구는 궁궐건축의 빛 환경 특성과 현대건축에서의 활용에 대한 기초자료로 활용이 가능하다. The aim of this study is to analyze the daylight performance at Changdeokgung Nakseonjae that is the representative and most well preserved Korean royal palace. As a result of measuring illuminance and luminance, direct sunlight is cut off by the eaves and reflective light from the court yard comes in the inside of the floor. As the layer of window is increased, daylight is decreased and the illuminance distribution is more stable because of decreasing of illuminance changes. Also, the lower part luminance is higher than upper part of window surface because direct sunlight is cut off by the eaves. This study would be used as preliminary data for applying characteristics of lighting environment of Korean royal palace to modem architecture.