• 한국실내디자인학회논문집
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• 제13권6호
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• pp.167-174
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• 2004

The purpose of this study is to examinethe present illumination conditions in office environment and to suggest an efficient illumination plan in office planning process. Illumination conditions in work environment were surveyed in 6 offices to investigate whether the present illumination conditions were appropriate to the work type. The results of this study are as follows: Most of the general Illuminance level in the area of work were all at an adequate level, except one. The average Illuminance level in the all meeting rooms were met for the standard. Illuminance in the all reception area were extremely over the standard, The illuminations of this area were rather designed according to the image of the company than the standard. As for the illumination method in the area of general work, four offices used a general lighting by a direct lighting type, while two offices used a general lighting and a task lighting at the same time. This survey suggested that first, each company should consider illumination plan in the building planning process, second, illumination plan considering the type of places is needed, and third, illumination environment may be differentiated according to the work type. In conclusion, efficient illumination environment should be considered in office building planning process, especially In terms of illumination materials and methods.

• 한국임상보건과학회지
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• 제4권2호
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• pp.550-555
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• 2016

Purpose. We compared with the refracting power and aberration according to the measurement change in illumination and the pupils area by using the auto refraction instruments. Methods. In this study it were examined 64 eyes without eye disease, 21.4 (${\pm}2.54$) age, 32 (male 10, female 22) patients. Experiments in general illumination using the auto refraction instruments (HRK-8000A, Huvitz, Korea) was measured in both eyes 3 times and after scotopic for 30 minutes in a dark room blocked the light was measured in the same way. Aberration were measured coma, spherical aberration, high and low order aberrations in a general illumination (3500 lux) and low illumination (5 lux) of the pupil area 3.96 mm and 5.96 mm. Results. In the general illumination for measuring of the pupil area, the refractive power, coma, spherical aberration and low order aberration was no significant difference. In the low illumination, spherical aberration of the pupil area was $0.005({\pm}0.015){\mu}m$ in a 3.96mm, $0.014({\pm}0.020){\mu}m$ in a 5.96 mm and appeared a significant difference(p = 0.003). In general and low illumination on the results of comparing the measured values of the refractive power and aberration at the pupil area 3.96 mm, high order aberrations was $0.205({\pm}0.145){\mu}m$ in general illumination, $0.132({\pm}0.075){\mu}m$ in low illumination and appeared a significant differences(p = 0.001). High order aberrations at the pupil area 5.96 mm was $0.278({\pm}0.244){\mu}m$ in general illumination, $0.150({\pm}0.092){\mu}m$ in low illumination and appeared a significant differences(p = 0.000). Conclusions. When the eye refractive power measured by the automatic refraction does not depend on the illumination conditions and size of the observation pupil area, it was found that aberrations are affected by the illumination and the observation pupil area. It was found that the eye examination chamber illumination to obtain accurate measurement produces better results to decrease than to increase.

• 교육시설 논문지
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• 제20권3호
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• pp.29-39
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• 2013

This study addresses the evaluation on the satisfaction of school illumination quality by applying SERVPERF model after extracting factors affecting school illumination quality. Three types of illumination systems (fluorescence light, general LED light and high color rendition LED light) were tested by students who have used each illumination system. Three factors such as effectiveness, esthetic sense and function were developed for evaluation. Satisfaction evaluation was performed based on applied SERVPERF model by comparing perceived levels. The differences of perceived levels of satisfaction on the illumination systems were analyzed by ANOVA. The results said respondents satisfy only the high color rendition LED light regardless of three factors. Especially, students who experienced high color rendition LED light have strong intention to recommend that illumination system to other schools. They also express their desire to use that system at home. Interestingly, there is not much satisfaction difference between fluorescence light and general LED light.

• 항공우주시스템공학회지
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• 제5권2호
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• pp.12-17
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• 2011

Pilot and flight crew visual performance in general aviation aircraft operating is paramount for safe operation of the aircraft. Pilot compartment view, instrument and cockpit lighting forms an essential aspect of this visual performance, and therefore warrants guidance and standardization. This study introduces acceptable design criteria for pilot compartment view, instrument and cockpit illumination for general aviation aircraft.

• 설비공학논문집
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• 제27권10호
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• pp.527-536
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• 2015

Studies for the reduction of lighting energy have been done using technologies such as user and location awareness. However, the focus of current research on location-based lighting control has been on energy reduction, which can lead to other issues including an imbalance in indoor illumination. This study proposes a lighting control system applying general illumination and technology for user and location awareness. The proposed lighting control system reduced lighting energy by 72.1%, 66.5% and 62.3% for 1, 2 and 3 users, respectively, compared to the On/Off lighting control system. This lighting control system causes an increase in lighting energy of 35.8% and 10.9% for 1 and 2 users compared to the lighting control system with user and location awareness, while a reduction of 9.4% was seen for 3 users. This means that the proposed system provides more effective energy reduction for a room with multiple occupants as it is based on the general lighting control scheme. The lighting control system applying general illumination and technology of user and location awareness improved the uniformity factor by 32.0%, 39.4% and 33.4% for 1, 2 and 3 users, respectively.

• 태양에너지
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• 제17권4호
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• pp.35-43
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• 1997

An increase in the design of commercial buildings with daylighting is beginning to receive more attention, claimed by some as a second revolution in architecture. The benefits of daylighting may vary significantly because a characteristic of daylight is the way in which it varies. Indirect sunlight, however, received in the interior of a building after reflection, can serve a useful purpose as the main source of illumination. In a cloudy climate it can serve as an occasional welcome addition to the available skylight. Also, site constraints or surrounding urban context may necessitate using reflected light sources, or such sources may be an integral part of the overall design objectives and aesthetics of the proposed projects. When reflected sunlight is introduced into a space, its role in general illumination is what is of interest in this study. Results show that reflected sunlight may help the general illumination in almost same level of significance as daylight from diffuse sky. It is also summarized that the contribution of reflected sunlight to general illumination through the year round may be even and uniform regardless of the season. Consequently, introduction of reflected sunlight should be regarded as one of the successful means to enhance the visual environment in quantitative and qualitative way.

• 방송공학회논문지
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• 제22권2호
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• pp.207-213
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• 2017

다수의 조명을 이용한 멀티스펙트럴 이미징을 정확히 수행하기 위해서는 영상 내 조명의 세기가 균일해야 한다. 멀티스펙트럴 이미징이 아니더라도 정확한 색 정보가 필요한 영상 획득에서는 조명이 정확해야 하고, 정확한 조명 특성을 위해 평면 광원을 사용하거나 조명 캘리브레이션을 수행한다. 본 논문에서는 조명의 세기가 균일하지 않은 영상을 조명의 세기가 균일하도록 색상을 보정하는 방법을 제안한다. 우선 비균일 조명에서 얻은 두 영상으로 멀티스펙트럴 이미징을 수행하여 반사 스펙트럼을 획득하고 획득한 반사 스펙트럼을 형광등이나 태양광과 같은 평면광에서 획득한 영상의 조명 특성으로 재조명한다. 재조명으로 얻은 영상과 평면광 영상의 조도 분포의 차이를 이용해서 비균일 조명 영상을 균일한 영상에서 획득한 영상처럼 색상 보정을 수행한다. 실험 결과로 조명의 비균일성이 균일하게 보정되었는지 확인하고, 이 결과를 통해 영상의 색 정보를 취득하는 데 조명의 제약사항을 줄일 수 있을 것으로 기대된다.

• Journal of Biosystems Engineering
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• 제25권1호
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• pp.25-32
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• 2000

Motivated by the need for developing the more efficient lighting system for light culture in the greenhouses, this paper aims to predict the illumination of incandescent lamp according to various levels of lighting and various kinds of the lamp. The results obtained in this experiment are summarized as follows. 1. The general equation to predict the illumination according to the kind of incandescent lamp and the installation height was suggested as {{{{y= { a + bx+ cx^2} over { 1+dx+ex^2~ + fx^3} [lx]}}}} , where , a, b, c , d, e and of were arbitrary constants. 2. Maximum illumination of hat-covered lamp of 60 W was 1.2 -1.5 times as many as uncovered lamp. 3. Maximum illumination of yellow color painted lamp of 100 W was 1.3 times as many as unpainted lamp.

• 한국조경학회지
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• 제29권4호
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• pp.44-52
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• 2001

This study performed factor analysis for 21 independent variables related to the effect of illumination and suggested the effect by multiple regression analysis on the relationship between the effect of illumination and the satisfaction of use of a dependent variable to find the effect of illumination in urban parks at night and the effect of illumination on the satisfaction of use. The results of this study are as follows; 1) Of the 21 independent variables used to study the effect of illumination in urban parks at night, the impact on safety and possibility of crime was highly. The effects of illumination by factor analysis were abstracted as effects of removing anxiety, securing safety, increasing use. 2) As a result of multiple regression analysis, independent variables influencing satisfaction of use in urban park were proved as effects of removing anxiety, securing safety, increasing identity, preparing atmosphere and increasing use. Also, the effect of securing safety was the most important factor; it showed a level of importance 2 times higher than the effect of removing anxiety, and 7.7 times higher than the effect of preparing atmosphere in relative contribution of the effect of illumination to satisfaction of use. 3) Of the effects of illumination influencing satisfaction of use in urban parks, the effect of securing safety and the effect of increasing visibility were more significant than the effects of removing anxiety, preparing atmosphere and increasing use. This fact means that personal safety an the identity of persons or facilities in the space of use should be considered with priority in planning or designing illumination. Also, it implies hat, for night use in urban parks, lightness of the space is required for general safety of use at parks, and proper illuminance on the activity in the space of use should be required. The subject parks of this study are 8 urban neighborhood parks. The model on the effect of illumination and the satisfaction of use depends on characteristics and conditions of location of he park and user class, so the subject parks and persons should be varied, and the difference by sex or ages should be suggested.

• 조명전기설비학회논문지
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• 제23권4호
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• pp.1-7
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• 2009

본 연구에서는 농촌 청소년 공부방을 대상으로 조명환경 실태조사를 실시하였다. 그 결과, 공부방의 평균 공간의 크기는 11.42[$m^2$]이며, 주로 광원은 형광등을 사용하였으며 조명사용방법은 전반조명만 이용하는 경우가 73.8[%]이며, 배광방식은 직접조명 방식을 주로 사용하고 있었다. 또한 스탠드를 소유하고 있는 가구는 45.7[%]이었으며, 국부조명인 스탠드를 사용하는 비율은 전체 조사대상의 20[%]에 지나지 않아 시작업이 효과적이지 못하였다. 내부공간 조도는 평균 131.82[lx]이며, 책상면 조도는 253.64[lx]로 최저허용조도의 42.3[%]에 해당하는 열악한 실정이었으며, 균제도는 평균 35.61[%]로 나타났다. 또한 사용자의 조명환경에 비해 만족도는 3.93점으로 높아 조명에 대한 인식이 매우 부족한 것으로 사료된다.