• 조명전기설비학회논문지
• /
• 제25권12호
• /
• pp.21-26
• /
• 2011

This is a study to establish regulations against light pollution for lighting on roads. Many kinds of light pollution by luminaire on roads was calculated and analyzed by applying the classification method of luminaires(Cut-off classification of IDA-IESNA, BUG Rating Classification) and the calculation method of Upward Lighting Ratio of CIE among measures to prevent light pollution that international lighting organizations suggest. As a result of the analysis, it was found that the regulation by Cutoff of IESNA and ULR classification of CIE could be one for scattered light of light pollution compared to BUG classification but is not sufficient for the regulation of light tresspass or glare. BUG classification by each lighting zone was suggested as threshold value of the light pollution regulation considering domestic conditions.

• 전기학회논문지
• /
• 제67권6호
• /
• pp.759-766
• /
• 2018

Although the Act on the Prevention of Light Pollution Due to Artificial Lighting has been enforced since 2013, the area of advertisement lighting has made slow progress in solving the problems of light pollution. This paper first investigated institutional problems by analyzing domestic laws and regulations relating to the light pollution of advertisement lighting, and investigated and analyzed methods for reducing light pollution that were applied in overseas countries. Then, problems of light pollution were analyzed by conducting a research on the actual status of advertisement lightings installed in South Korea and applying various methods for reducing light pollution, and advertisement lighting using LED was recommended. As a method for reducing light pollution that can be applied to the process of manufacturing channel letter-type advertisement lights, power consumption per unit area ($W/m^2$) was proposed, and $100W/m^2$ was recommended as a value currently suitable for South Korea.

• 한국정보기술학회논문지
• /
• 제16권12호
• /
• pp.13-24
• /
• 2018

최근 과도한 야간조명의 사용으로 인해 발생하는 빛공해가 사회적 문제로 대두되면서, 빛공해 피해를 최소하기 위한 시도들이 지속되고 있다. 현재 국내에서 사용되고 있는 빛공해 진단방법은 주로 국소지역의 광원을 조사하는 직접 측정 방식이다. 본 연구에서는 서울시 전역의 빛공해 실태를 파악하는 기법 개발을 목적으로 국제 우주정거장(International Space Station)에서 촬영되는 야간 조명 이미지 데이터를 사용하여 서울시 빛지도를 제작하고 이를 활용하여 서울시의 빛공해 실태를 진단하고자 한다. 연구의 결과 업무시설 밀집지역과 상업 활성화 지역이 서울시 내 가장 밝은 곳으로 나타났으며, 대형 체육시설 또한 서울시내 빛을 유발하는 주요 요소인 것으로 확인되었다. 본 연구는 현재 국내에서는 잘 알려지지 않은 ISS이미지 데이터를 사용하여 서울시 빛공해의 현황을 고찰하고, 빛공해 지도를 제작할 수 있는 새로운 방법론을 제안했다는 것에 그 의의가 있다.

• 조명전기설비학회논문지
• /
• 제28권3호
• /
• pp.7-13
• /
• 2014

As issues on light pollution is being raised recently, movements to prevent light pollution is being implemented by each local government, such as by enforcing the Light Pollution Act from February 2013, in order to require compliance with the light-emitting permission level of existing lighting facilities. However, despite the regulations, no specific measures on products are being prepared. Thus, this Research has designed a light shield as a measure to minimize the burden of the effectiveness and time required for development and the burden of the cost necessary to re-install existing light facilities in its entirety and reviewed the effect of the measure through the BUG ratings.

• 조명전기설비학회논문지
• /
• 제26권10호
• /
• pp.9-15
• /
• 2012

There have been light pollution standards just for architectural lighting and sign in the "Light Pollution Abatement Law" so far. However, both of them regulate only one of the three main light pollution elements-"Glare". Therefore, it is imperative to do research on the other two light pollution elements-"Upward" and "Light Trespass" and make proper restriction. Subsequently, this study focuses on the upward light from the street light and suggests its analysis method. Eventually, this study aims to make viable management which is suitable for the nation and, in addition, to suggest appropriate level of restriction to "Light Pollution Abatement Law" by doing site survey.

• Journal of Microbiology and Biotechnology
• /
• 제28권12호
• /
• pp.2019-2028
• /
• 2018

Natural astaxanthin mainly derives from a microalgae producer, Haematococcus pluvialis. The induction of nitrogen starvation and high light intensity is particularly significant for boosting astaxanthin production. However, the different responses to light intensity and nitrogen starvation needed to be analyzed for biomass growth and astaxanthin accumulation. The results showed that the highest level of astaxanthin production was achieved in nitrogen starvation, and was 1.64 times higher than the control group at 11 days. With regard to the optimization of light intensity utilization, it was at $200{\mu}mo/m^2/s$ under nitrogen starvation that the highest astaxanthin productivity per light intensity was achieved. In addition, both high light intensity and a nitrogen source had significant effects on multiple indicators. For example, high light intensity had a greater significant effect than a nitrogen source on biomass dry weight, astaxanthin yield and astaxanthin productivity; in contrast, nitrogen starvation was more beneficial for enhancing astaxanthin content per dry weight biomass. The data indicate that high light intensity synergizes with nitrogen starvation to stimulate the biosynthesis of astaxanthin.

• 환경영향평가
• /
• 제28권1호
• /
• pp.63-70
• /
• 2019

인공조명은 필수적인 부분이지만, 불필요하거나 과도한 빛의 사용으로 인해 빛공해를 유발시킨다. 빛공해는 전력낭비, 인체의 건강상 악영향, 생태계 파괴 등과 같은 부정적인 영향으로 국 내외에서 법적인 규제를 하고 있다. 하지만 현재는 조명기구 설치 이후의 방법으로만 관리하기 때문에 사전에 빛공해가 유발될 우려가 있는 지역을 효과적으로 관리하고 영향을 저감시키기 위한 빛공해분야 영향평가지침을 제안하고자 한다. 영향평가작성지침을 수립하여 작성자 및 검토자의 혼란을 방지하고 중장기적으로 국내의 빛공해 관리를 효과적으로 수립하는데 활용하고자 한다.

• KIEAE Journal
• /
• 제9권6호
• /
• pp.45-50
• /
• 2009

Nowadays, the lighting of urban nightscape has become important for improvement in city. Lighting the outdoor is different that lighting an interior. Outdoor lighting designs should be designed to minimize glare, light trespass, light clutter and energy conservation to avoid light pollution. Mokpo city launched into a large scale project of the city beautification using outdoor lighting. However, outcomes of outdoor lighting project have faced strong opposition from environmental groups. This study aims to analyze the light pollution of outdoor lighting in Mokpo-si for creating a health night environment. The Radiant Imaging Prometric-1400 was used to measure the luminance of Yudal Mountain, Goha Island and Luminarie Street. The result showed that the all the outdoor lighting produce light pollution and some places like mountain and island did not need a lot of lighting all the time.

• 수면정신생리
• /
• 제27권1호
• /
• pp.1-7
• /
• 2020

Mobile digital devices are very familiar and useful devices in the daily life of modern people, and are used for various tasks such as communication, reading, writing, and playing media. As the use of mobile digital devices has become more prevalent, user time has also been increasing. In particular, the number of people who use digital devices before sleep is growing. The light pollution associated with these devices is classified into four categories: urban sky glow, glare, light trespass, and clutter. The pattern in which modern people use digital devices corresponds to light pollution caused by light trespass and clutter from light exposure to artificial light at night. The light pollution caused by digital devices can cause melatonin secretion suppression, delayed sleep onset, reduction of sleepiness before bedtime, and periodic rhythm and cognitive function disturbances. In addition, a study of children and adolescents showed there may be disturbances in the sleep-wake cycle and circadian rhythm, deterioration of sleep quality, and daytime fatigue due to light pollution caused by artificial light at night from mobile digital devices. A multi-faceted research effort is also necessary to investigate the healthy use of mobile digital devices based on research evidence and insights with an accurate evaluation of the influence of mobile digital devices as a form of light pollution.

• 대한건축학회논문집:구조계
• /
• 제34권4호
• /
• pp.83-91
• /
• 2018

Artificial lighting contributes greatly to developing civilizations. It allows daytime activities to continue throughout the dark hours of the day and thus increasing work productivity as well as allowing people to enjoy nighttime activities. In addition, artificial lighting is used to beautify landscapes, architectural monuments, and thus highlighting the social-economic development of a given place. However, excessive and improper usage of artificial lighting can lead to light pollution. Light pollution is a serious issue that is detrimental to human health. It has been linked to a number of health conditions including sleep disorder, visual discomfort as well as cancer. The effects of light pollution extend throughout the entire ecosystem, affecting both plants and animals. Furthermore, sky-glow from light pollution hinders astronomical observation. The current paper presents a study conducted on lit environment of a nightscape. The quality of the sky was measured in 144 spots using Sky Quality Meter (SQM) devices. The measured spots were chosen on the basis of land use as well as distance from the Halla Mountain.