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Proceedings of the Conference CIE 2021最新文献

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COMPARISON OF LUMINOUS FLUX MAINTENANCE METHODS, CONTINOUS VS. ON/OFF CYCLES 光通量维护方法的比较，连续与开/关周期
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.po30
D. Corell, C. Dam-Hansen, A. Thorseth
{"title":"COMPARISON OF LUMINOUS FLUX MAINTENANCE METHODS, CONTINOUS VS. ON/OFF CYCLES","authors":"D. Corell, C. Dam-Hansen, A. Thorseth","doi":"10.25039/x48.2021.po30","DOIUrl":"https://doi.org/10.25039/x48.2021.po30","url":null,"abstract":"This paper will present preliminary results from a research project comparing two methods for estimating the lifetime of LED products, LM-84 (6000 h test) and the new EU endurance test (3600h test) including on/off cycling, that will be required by EU from 2021. Beside the luminous flux development for the sources tested, their colorimetric results will also be examined as a function of time. Preliminary results for two series of LED products will be presented. For one series, the 3600h test have been completed, for the remaining series only results from the 6000h test is available. Results of the luminous flux and colour maintenance will be presented. Initial examinations shows good agreement between the two tests methods for the first series of LED products measured.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116997094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
IMPACT OF QUALITATIVE AND QUANTITATIVE METHODS ON THE EVALUATION OF STREET LIGHTING UNIFORMITY 定性和定量方法对街道照明均匀性评价的影响
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.op53
Ulrika Wänström Lindh, A. Jägerbrand
{"title":"IMPACT OF QUALITATIVE AND QUANTITATIVE METHODS ON THE EVALUATION OF STREET LIGHTING UNIFORMITY","authors":"Ulrika Wänström Lindh, A. Jägerbrand","doi":"10.25039/x48.2021.op53","DOIUrl":"https://doi.org/10.25039/x48.2021.op53","url":null,"abstract":"Uniformity of lighting for pedestrians is often assumed to have been achieved in mixed traffic environments when the lighting uniformity requirements for vehicular traffic have been fulfilled. Uniformity of lighting for drivers is commonly evaluated based on quan-titative data on parameters such as overall luminance uniformity. However, methods for evaluating uniformity from the perspective of other road users are currently somewhat lacking. This study discusses qualitative and quantitative methods of assessing street lighting uniformity, and the potential implications for lighting design and the road us-ers. We used convergence design and imbedded design based on two field studies. The research purpose is twofold: first, to study if, and how, measured lighting uni-formity corresponds with visual perception. Secondly, to identify and explain the addi-tional value that a combined method approach can contribute. The study considers ex-amples of when the measured uniformity corresponds to visually perceived uniformity and when they do not correspond.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117046306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
DAMAGE REDUCTION WITH MAINTAINED COLOUR QUALITY OF ARTWORK UNDER RGB PROJECTOR 在RGB投影仪下保持艺术品的色彩质量，减少损坏
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.op56
R. Kore, N. Brown, D. Durmus
{"title":"DAMAGE REDUCTION WITH MAINTAINED COLOUR QUALITY OF ARTWORK UNDER RGB PROJECTOR","authors":"R. Kore, N. Brown, D. Durmus","doi":"10.25039/x48.2021.op56","DOIUrl":"https://doi.org/10.25039/x48.2021.op56","url":null,"abstract":"Light absorbed by sensitive artwork may cause irreversible damage. Optimising the spectral power distribution of light sources to minimise absorbed light can reduce damage while maintaining the colour appearance of artwork. Previous absorption minimisation studies used optimisation methods without comparing their performance. Here, three channel RGB LED projector spectra was optimised for 24 colour samples by using brute-force (BF) and a multi-objective genetic algorithm (MOGA). BF search and MOGA were similar in achieving optimal results, reducing both light absorption and energy consumption by almost half. MOGA was 2.5 times faster than BF in finding optimal solutions. The results indicate that an LED RGB projector can be used to illuminate museum artifacts to reduce light absorption and energy consumption, with the caveat of perceptible colour shifts in certain samples. Future research will investigate the use of CIECAM02 instead of CIEDE2000 and observers’ subjective evaluations of artwork under optimised lighting.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121117656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
HOME OFFICE SURVEY IN THE SCOPE OF THE IEA SHC TASK 61, THE LIGHTING CONDITIONS FOR STUDENTS 内政部在国际能源署SHC任务范围内调查了61名学生的照明条件
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.op35
B. Matusiak, C. Amorim, S. Sibilio, J. Martyniuk-Pęczek, N. Sokół, Y. Koga, J. Debik
{"title":"HOME OFFICE SURVEY IN THE SCOPE OF THE IEA SHC TASK 61, THE LIGHTING CONDITIONS FOR STUDENTS","authors":"B. Matusiak, C. Amorim, S. Sibilio, J. Martyniuk-Pęczek, N. Sokół, Y. Koga, J. Debik","doi":"10.25039/x48.2021.op35","DOIUrl":"https://doi.org/10.25039/x48.2021.op35","url":null,"abstract":"This paper has been developed in the IEA SHC Task 61 Integrated Solutions for Daylighting and Electric Lighting scope. Task 61 aims at developing and testing strategies and solutions combining daylighting, electric lighting, and the most suitable control systems. Some of the planned activities, especially in the Subtask A: User perspective and requirements, were not possible due to the Coronavirus pandemic restrictions. On the other side, new challenges emerged, for example, the migration of workplaces to homes. It occurred both for professionals and students, and the lighting conditions in these new improvised workplaces are unknown. In this context, the article presents the part of the home office survey aiming to understand lighting conditions for students in home offices in different countries: Brazil, Italy, Japan, Columbia, Denmark, and Poland. The paper also seeks to define the current limitations of a home office in providing a resilient visual environment.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124712924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CHROMATIC DISCRIMINATION THRESHOLDS OBSERVED IN CAM02-UCS AND CAM16-UCS 在cam02-ucs和cam16-ucs中观察到色差区分阈值
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.op46
Á. Urbin, B.V. Nagy
{"title":"CHROMATIC DISCRIMINATION THRESHOLDS OBSERVED IN CAM02-UCS AND CAM16-UCS","authors":"Á. Urbin, B.V. Nagy","doi":"10.25039/x48.2021.op46","DOIUrl":"https://doi.org/10.25039/x48.2021.op46","url":null,"abstract":"In our study chromatic discrimination thresholds of normal colour observers measured with the Trivector test of the Cambridge Colour Test were analysed. Chromaticity coordinates were transformed from the CIE (1976) u’v’ diagram to the CAM02-UCS and CAM16-UCS colour spaces, where colour differences were calculated.\u0000The measured data consisted of chromatic discrimination thresholds measured in 66 reference points covering the gamut of a CRT display. The test directions were set to the confusion axes towards the Protan, Deutan and Tritan confusion points.\u0000Our results show variance in the ΔE values expressed both in the CAM02-UCS and CAM16-UCS colour spaces.\u0000Since our input chromaticity values described previously measured just-noticeable stimuli – therefore perceptually equal colour differences – we assumed that our data show equal colour differences in the uniform colour spaces. However, the discrimination thresholds transformed to CAM02-UCS and CAM16-UCS show that colour differences increase towards the chromaticity of the adapting light.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124913452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ARTIFICIAL LIGHTING DESIGN WITH CONCEPT OF HUMAN CENTRIC LIGHTING CRITERIA IN CELL OFFICES 以人为本的室内室内人工照明设计
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.po42
S. Aliparast, S. Onaygil
{"title":"ARTIFICIAL LIGHTING DESIGN WITH CONCEPT OF HUMAN CENTRIC LIGHTING CRITERIA IN CELL OFFICES","authors":"S. Aliparast, S. Onaygil","doi":"10.25039/x48.2021.po42","DOIUrl":"https://doi.org/10.25039/x48.2021.po42","url":null,"abstract":"Human centric lighting (HCL) is the sum of visual and non-visual effects of light on humans. According to the results of the research carried out to date it is explained that lighting design results for cell office should reach EML (Equivalent Melanopic Lux) higher than 250 and CS (Circadian Stimulus) approximately 0.4-0.3 at office hours 8:00 AM – 5:00 PM. This study is an alternative lighting design were created in which EML and CS criteria values are specified in cell office without receiving daylight. Artificial electrical lighting design should be analysed in order to deliver an optimal circadian lighting that can help to increase occupant’s productivity, performance and decreasing energy consumption.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123410027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
UNFILTERED TRAP-BASED PHOTOMETER CALIBRATION 基于未过滤陷阱的光度计校准
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.po19
P. Kliment, M. Smíd, G. Porrovecchio
{"title":"UNFILTERED TRAP-BASED PHOTOMETER CALIBRATION","authors":"P. Kliment, M. Smíd, G. Porrovecchio","doi":"10.25039/x48.2021.po19","DOIUrl":"https://doi.org/10.25039/x48.2021.po19","url":null,"abstract":"LED-based light sources have replaced massively traditional sources. The metrology traceability chains realised in leading European NMIs utilise the absolutely calibrated broadband radiometers (three-element silicon trap detectors) for calibrating primary photometers. Specific spectral properties of white LED allow to apply the trap detectors directly as new primary photometers. The unfiltered technique (Dӧnsberg at al., 2014) is used and the calibration of spectral irradiance responsivity is needed. We have a long experience in detector-based spectral irradiance responsivity calibrations declared by particular CMC’s published in BIPM KCDB. The aim of this work was to revise the uncertainty budget in order to reduce the measurement uncertainties for specific application of calibration of the trap-based unfiltered primary photometers UPP. The two calibration methods were used to analyse the occasional back-reflection effect of the UPP front aperture. The measurement was performed using our reference spectral responsivity facility in spectral range 350 nm – 900 nm.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128371618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
USEFUL CONTRAST INDEX FOR ROADWAY LIGHTING STANDARDS 对道路照明标准有用的对比度指数
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.po65
A. R. AbouElhamd, R. Saraiji
{"title":"USEFUL CONTRAST INDEX FOR ROADWAY LIGHTING STANDARDS","authors":"A. R. AbouElhamd, R. Saraiji","doi":"10.25039/x48.2021.po65","DOIUrl":"https://doi.org/10.25039/x48.2021.po65","url":null,"abstract":"This article proposes a new metric for roadway lighting design that has the potential to improve visibility for drivers during nighttime. The new metric is named as Useful Contrast Index (UCI) and it relates the contrast of obstacles (targets) to the contrast threshold. We define the useful contrast index as the percentage of targets that have a contrast value greater than the contrast threshold along the length of the road. We conclude that the Useful Contrast Index has merit and could be used to provide a better visual environment for drivers.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128971801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
RISKS IN THE VISUAL ENVIRONMENT SUCH AS GLARE, ILLUMINANCE AND LUMINANCE RATIO - RISK ASSESSMENTS MADE WITH VISUAL ERGONOMICS RISK ASSESSMENT METHOD, VERAM– A DESCRIPTIVE PAPER 视觉环境中的风险，如眩光、照度和亮度比。用视觉工效学风险评估方法veram进行风险评估。一篇描述性论文
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.op62
H. Hemphälä, S. Glimne, Marina Heiden, J. Lindén, P. Lindberg, P. Nylén
{"title":"RISKS IN THE VISUAL ENVIRONMENT SUCH AS GLARE, ILLUMINANCE AND LUMINANCE RATIO - RISK ASSESSMENTS MADE WITH VISUAL ERGONOMICS RISK ASSESSMENT METHOD, VERAM– A DESCRIPTIVE PAPER","authors":"H. Hemphälä, S. Glimne, Marina Heiden, J. Lindén, P. Lindberg, P. Nylén","doi":"10.25039/x48.2021.op62","DOIUrl":"https://doi.org/10.25039/x48.2021.op62","url":null,"abstract":"The visual environment has an impact on subjective strain and headaches. A visual ergonomics risk assessment method, VERAM, was used on 217 workplaces, and consists of both of a subjective questionnaire and an objective risk assessment, the latter risks are presented in this paper. The risk for daylight was assessed to be yellow (moderate risk) or red (high risk) at 53% of the workplaces and the risk for glare was yellow or red at 66%. The assessment of the lighting design showed a yellow or red risk at 44% of the workplaces and the illuminance was assessed to be insufficient at 49% of the workplaces. Flicker or TLM (temporal light modulation) was assessed to be a problem among 33%. These results show that the design of the visual environment is in most cases not performed in a satisfying way. The visual environment is essential to increase wellbeing, health and performance.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123590460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DEVELOPMENT OF NEW STANDARDS FOR MUSEUM LIGHTING 制定博物馆照明新标准
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.po48
A. Bartseva, A. Shakhparunyants, A. Chernyak, R. Stolyarevskaya, E. Rozovskiy
{"title":"DEVELOPMENT OF NEW STANDARDS FOR MUSEUM LIGHTING","authors":"A. Bartseva, A. Shakhparunyants, A. Chernyak, R. Stolyarevskaya, E. Rozovskiy","doi":"10.25039/x48.2021.po48","DOIUrl":"https://doi.org/10.25039/x48.2021.po48","url":null,"abstract":"The new standards for museum lighting development was based on data collection by means of questionnaires, processing and analysis of subjective assessments of art historians, museum workers, research results of restorers and expert visitors, along with objective, physical measurements of photometric parameters of lighting installations in selected exhibition halls of the most famous museums in Russia.\u0000Based on the studies performed, national standards of both permanent and preliminary nature were prepared and introduced in 2020 by institute VNISI named after S.I. Vavilov.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121471429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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