• Title, Summary, Keyword: Lighting

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Study of Efficiency Test and Subjective Responses about Pendent Task Lighting System Using Phosphor Luminescent Film LED (광기여 필름 LED 팬던트 작업조명시스템 주관평가와 성능검증)

  • Cha, Kwang-Seok;Kim, Hway-Suh
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.23 no.3
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    • pp.188-193
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    • 2011
  • For a long time work or study, pendent task lighting system prepared with phosphor luminescent film LED was developed for eye protection and working efficiency improvement. Developed lighting system was used together with pendent and ambient lighting. Such as, we made comfortable lighting environment system. Evaluation for developed lighting system, that had proceeded to Mock-up test and subjective evaluation. Also It had proceeded that lighting environment analyzed and compatibility valuation of installation. In subjective evaluation, the students have expressed themselves satisfied to phosphor luminescent film LED lighting system. In Mock-up test, It is not problem to intensity of illumination, luminance and color temperature. Therefore, developed LED lighting system was installed at the Daegu apartment. It is having a P.O.E study progress to phosphor luminescent film LED lighting system.

Lighting Design for Efficient Installation.Operation of Roadway Lighting (도로조명의 효율적 설치.운영을 위한 조명설계)

  • Kwon, Ki-Tae;Shin, Sang-Wuk;Lee, Se-Hyun;Rho, Jae-Yup;Choi, Seok-Joon;Lee, Jeong-Keun;Seo, Jeong-Jin;Lee, Gyu-Seoung;Hwang, Myung-Keun
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • pp.81-84
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    • 2009
  • 국내외 도로조명 설계기법을 조사, 분석한 것을 바탕으로 시뮬레이션 결과와 비교 검토하였다. 그 결과 평균조도값은 설계와 큰 차이를 가지고 있지 않았지만 지그제그 배열일 경우 종합균제도 및 차선축균제도가 규정에 만족시기지 못하였다.

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Highly stable Zn-In-Sn-O TFTs for the Application of AM-OLED Display

  • Ryu, Min-Ki;KoPark, Sang-Hee;Yang, Shin-Hyuk;Cheong, Woo-Seok;Byun, Chun-Won;Chung, Sung-Mook;Kwon, Oh-Sang;Park, Eun-Suk;Jeong, Jae-Kyeong;Cho, Kyoung-Ik;Cho, Doo-Hee;Lee, Jeong-Ik;Hwang, Chi-Sun
    • 한국정보디스플레이학회:학술대회논문집
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    • pp.330-332
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    • 2009
  • Highly stable bottom gate thin film transistors(TFTs) with a zinc indium tin oxide(Zn-In-Sn-O:ZITO) channel layer have been fabricated by rf-magnetron co-sputtering using a indium tin oxide(ITO:90/10), a tin oxide and a zinc oxide targets. The ZITO TFT (W/L=$40{\mu}m/20{\mu}m$) has a mobility of 24.6 $cm^2$/V.s, a subthreshold swing of 0.12V/dec., a turn-on voltage of -0.4V and an on/off ratio of >$10^9$. When gate field of $1.8{\times}10^5$ V/cm was applied with source-drain current of $3{\mu}A$ at $60^{\circ}C$, the threshold voltage shift was ~0.18 V after 135 hours. We fabricated AM-OLED driven by highly stable bottom gate Zn-In-Sn-O TFT array.

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LED.신광원 조명기술의 동향과 특성

  • Hwang, M.K.;Shin, S.W.;Lee, Se-Hyeon;Roh, J.Y.;Choi, S.J.;Seo, J.J.;Lee, J.G.;Yang, S.Y.
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • pp.201-203
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    • 2009
  • 본 논문에서는 LED(light emitting diode)를 사용한 일반 조명에서부터 자동차 조명에 대한 LED, CNT(carbon nano-tube), OLED조명의 융합기술 현황에 대하여 살펴보았다. 정부의 15/30보급정책의 일환인 LED조명 시범보급사업(부산 및 대전 지하철역사, 김대중 컨벤션센터, 대구 및 대전 우체국 등)과 한국산업규격(KS C 7651-3)의 제정 등으로 LED 응용 조명은 시장에서의 사용으로 기존 조명기기와의 경쟁력이 예상된다.

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Research about Lighting Fixtures Development to the 300W Class PLS (300W급 광원을 이용한 조명기기디자인개발에 관한 연구)

  • Hwang Min-Ku;Shin Hyeon-Jeong;Yun Bong-Shik
    • The Journal of the Korea Contents Association
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    • v.5 no.3
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    • pp.103-111
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    • 2005
  • By international lighting market's growth and domestic landscape lighting market's growth, the latest lighting market is activated. But, They are doing price competition that domestic lighting technology and development technology of lighting fixtures design do not possess international competitiveness than these change. Specially, as image of area and the country can be influenced greatly by cityscape at present visual point that many interests are converged country and identity establishment of local government, many cities are using force hereupon. Constructs which cityscape is various including natural ecology area of life environment gather and are done Image creation and this people's consciousness and culture living soon inside thing which do speaking by proxy be. Than city's night view nature lighting more than by spectacle lighting along with life lighting to basis materialize can. It is meaning more than thing that fine view of city becomes beautiful simply that night view of city becomes superior, that means that city efficiency and quality of life are exalted by a word. Wish to establish effective lighting technology and new product design process through PLS lighting technical development and 300 W lighting fixtures design development hereupon, and raise domestic spectacle lighting market's localization and domestic lighting market's competitive power furthermore.

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A Case Study on the Role of LED Lighting at the Residential Space

  • Kim, Hye Young
    • International Journal of Advanced Culture Technology
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    • v.4 no.4
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    • pp.6-12
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    • 2016
  • Due to the development of technology, the modern people became to require not only more convenient life but also more comfortable and emotional environment, and individually suitable living environment is applied to residents in a residential space. Recently, while the LED lighting was variously attempted in every sector in society, it is needed to express differentiated lighting according to the resident's individual lifestyle in a residential space. In this paper, we analyze the role of LED lighting suitable for the digitalized lifestyle of the modern people through the relevant literature survey and case studies. The following results are obtained in summary of the rapidly changed recent trends of LED lighting. First, LED light replace existing light sources due to the advanced new technology in LED industry, and take the spotlight as a new lighting solution with the development of variable color LED bulb and the control technology by the wired and wireless communications. Second, LED lighting can be structurally applicable to every lighting device because of its compact and lightweight units, can produce abundant light environment by expression of variable colors and moods with the easy coloring and dimming control, can be reborn as emotional lighting design. Third, as recently practices are constantly appeared that integrate LED lights in the interior elements, such as object and furniture, and combine advanced LED lighting technology to new materials, the portion of illumination on the indoor environment is further increased after integrating the LED lighting and interior elements make boundaries of lighting and product architecture become blurred. LED lighting is confirmed that is being changed from the external functionality including material, shape, color, and etc. into the contextual emotion design including the lights expression, variable color, brightness control, making image, and etc. as the light source in current smart lighting era.

An Experimental Study on the Impact of the Visual Perception by the Change of the Lighting Sources Color (광원색에 의한 실내공간의 지각변화에 관한 실험연구)

  • 이성민
    • Korean Institute of Interior Design Journal
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    • no.4
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    • pp.27-30
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    • 1995
  • This study suggests the optimum interior environment by projecting the criteria to design the living space light-ing that select the lighting environment among the sever-al environmental factors that influenced on the human perception. As a correspondance between the visual perception and the lighting, visual perception process, vision system, and visual perception system are investigated to compre-hend the lighting, and then conceptual contour of the lighting environments are presented which are transmit-ted the visual informations. As a lighting factors which are influenced on the visu-al perception, light source color is analized. Foundationally, the effect of the lighting methods and the techniques are investigated, and the changes of the lighting methods which influences on the space perception are examined through the previous results. As the changing the light sources color, the changing the subjective feelings of space perception through the ex-periment. This study is concluded with the proposition of the ef-fective lighting and the importance of the lighting envi-ronment.

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A Experimental Study the Showcase Lighting by Position of Light Source (광원의 위치를 중심으로 한 쇼케이스 조명실험연구)

  • 김현지;장상옥;안옥희
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.18 no.1
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    • pp.21-27
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    • 2004
  • This experimental study investigates the showcase display of cosmetic shops among the commercial space to suggest a desirable lighting by focusing on the lighting surroundings. The important outcomes of this study are summarized below. The result of the experiment for the showcase lighting; they need put the higher intensity lighting in inside for the local lighting and different effect. And for the emotional response, they need to put the horizontal lighting which is installed the behind of showcase and the vertical lighting for the front line lighting system.

A Study on the Lighting Distribution on Road Space by Modeling Roadside Tree Types (가로수 유형별 모델링을 통한 가로공간 조도분포에 관한 연구)

  • Lee, Seok-Jun;Lee, Jong-Sung
    • Journal of Environmental Science International
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    • v.21 no.4
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    • pp.391-399
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    • 2012
  • This study proposes lighting simulation approach to assess lighting quality on motor ways and walk ways considering each type of form and growth of roadside trees. Simulation approach to assess quality of lighting is frequently used for lighting design which guarantees secure of drivers and pedestrians during the night time. But, road side trees which have diverse benefits for citizens acts on obstacles during night time needs lighting. The results of this study shows a possible way for tuning the aims of both lighting and road side tree. It will be possible to develop harmonic design standards for road way lighting if further study achieved based on the result of this study.

A Study on the Evaluation of Lighting Energy Consumption by Control Strategy of the Electric Lighting (전기조명 제어 전략에 따른 조명에너지 소비량 평가에 관한 연구)

  • Yun, Gyeong;Kim, Kang-Soo
    • KIEAE Journal
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    • v.12 no.1
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    • pp.119-125
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    • 2012
  • The objective of this study is to evaluate the electric lighting energy consumption carried out by Daysim program. A comparison between the measurement and simulated exterior global horizontal illuminance shows differences about 10% and it is very similar to the measurement. The interior illuminance simulated by Daysim are 18.9% lower than the measurement and simulated lighting energy consumption is 10% lower than the measurement. Corrected annual lighting energy simulation results show that the best case is the combination of occupancy switch-off and dimming system with automatic controlled blinds (E-3). In case of no blinds, it occasionally derives the minimum lighting energy consumption but it causes the glare, so we need to be careful for choosing the control strategy. For the overcast sky, the lighting energy consumption is not changed significantly by control strategy while the lighting energy in the clear sky is changed noticeably. So we must know the right strategy for each case to control the electric lights and blinds.