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Proceedings of the Conference CIE 2021最新文献

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LIGHTING CONDITIONS IN BRAZILIAN AND COLOMBIAN HOME OFFICES: A PRELIMINARY STUDY BASED ON OCCUPANT´S PERCEPTION
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.op33
C. Amorim, N. G. Vasquez, J.R. Kanno, B. Matusiak
{"title":"LIGHTING CONDITIONS IN BRAZILIAN AND COLOMBIAN HOME OFFICES: A PRELIMINARY STUDY BASED ON OCCUPANT´S PERCEPTION","authors":"C. Amorim, N. G. Vasquez, J.R. Kanno, B. Matusiak","doi":"10.25039/x48.2021.op33","DOIUrl":"https://doi.org/10.25039/x48.2021.op33","url":null,"abstract":"A measure to mitigate the spread of the COVID-19 virus during the first year of the pandemic was to stay home. Thus, working and learning activities have migrated to dwellings under the so-called home office scheme. In this context, exploring the lighting conditions in home offices from the occupant's perspective is vital for understanding the quality of the perceived visual environment at home. Based on data collected in Brazil and Colombia, this preliminary study aimed to investigate occupant’s perception of the luminous environment in home offices and the influence of regional and personal characteristics. This study is part of broader research related to Subtask A of IEA Task 61, \"Integrated Solutions for Daylighting and Electric Lighting.\" Occupant's subjective assessments were collected from December 2020 to March 2021 through an online survey with professionals working from home. The results show that most professionals have an entire room for the home office, and these are more satisfied with the visual environment. In general, higher satisfaction was achieved when the lighting level was perceived as brighter and strong reflections were associated with disturbing glare situations. Most of the occupants perceived the light and colours as neutral. Daylight is more appreciated than artificial light. Participants located between 20°S and 34°S latitude were less satisfied with the visual environment in the home office. The first approach is part of comprehensive research, generating new data about lighting in home offices to subside guidelines for improving housing projects.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"18 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":"127956281","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
IMPACT OF THE NORMALIZATION OF THE SPECTRAL RESPONSIVITY ON THE PERFORMANCE OF THE GENERAL V(λ) MISMATCH INDEX 光谱响应率归一化对一般v (λ)失配指数性能的影响
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.po20
A. Ferrero, A. Thorseth
{"title":"IMPACT OF THE NORMALIZATION OF THE SPECTRAL RESPONSIVITY ON THE PERFORMANCE OF THE GENERAL V(λ) MISMATCH INDEX","authors":"A. Ferrero, A. Thorseth","doi":"10.25039/x48.2021.po20","DOIUrl":"https://doi.org/10.25039/x48.2021.po20","url":null,"abstract":"Quality indexes are usually defined for measurement instruments in order to characterize some specific aspect of their performance. The V(λ) spectral mismatch of photometers is evaluated by the general V(λ) mismatch index, f1’, whose value must be correlated with the average measurement error introduced by this spectral mismatch. The objective of this work is to assess the correlation of several indexes of this type with this average error of photometers. The difference between the studied indexes is that the spectral responsivity of the photometer is normalized with different factors to that defined for f1’. From this study, we conclude that the most suitable normalization in the definition of a f1’-type quality index is not determined by the spectral distribution used in the calibration or by those of the light sources to be measured. The normalization factor presenting the best correlation in all studied cases was obtained by numerically minimizing the value of the index instead of by applying an explicit function, as it is done in f1’.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"102 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":"121404637","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
CONCEPTUAL FRAMEWORK OF CULTURAL BACKGROUND IN THE LIT ENVIRONMENT 文学环境中文化背景的概念框架
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.op63
G. Izmir Tunahan, H. Altamirano, J. Unwin Teji
{"title":"CONCEPTUAL FRAMEWORK OF CULTURAL BACKGROUND IN THE LIT ENVIRONMENT","authors":"G. Izmir Tunahan, H. Altamirano, J. Unwin Teji","doi":"10.25039/x48.2021.op63","DOIUrl":"https://doi.org/10.25039/x48.2021.op63","url":null,"abstract":"In environmental terms, culture represents the climatic and indoor conditions people have experienced during a significant part of their life. Consequently, people exposed to different cultures might have different expectations of the lighting environment. Knowing the lighting expectations due to cultural experiences have numerous advantages; it could help meet the occupants’ needs and preferences and provide occupant satisfaction, reducing unnecessary energy consumption in the built environment. This paper aims to summarise a systematic review to create a conceptual framework of cultural background in the lit environment, which could help understand the impact of cultural background on daylight perception and expectation. This review highlighted that cultural background in lighting environment should be evaluated considering (1) the ethnicity and/or physiological characteristics of the individual eyes, (2) the area (luminance environment) where people used to live (3) the luminance environment they were recently exposed to and (4) the socio-cultural background of individuals. Future research should further test these components together and separately to investigate which component or combination is more influential on daylight perception.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"248-249 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":"114147482","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
A LABORATORY STUDY ON VISUAL AND EMOTIONAL COMFORT EVALUATION OF LED WIDE BEAM ANGLE LAMPS : TAKING 3000K/ 4000K / 5000 K LINEAR LAMPS AS RESEARCH OBJECT led宽光束角灯视觉与情感舒适度评价的实验室研究:以3000k / 4000k / 5000k线性灯为研究对象
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.po59
Kai Feng, L. Hao, Shujian Dai
{"title":"A LABORATORY STUDY ON VISUAL AND EMOTIONAL COMFORT EVALUATION OF LED WIDE BEAM ANGLE LAMPS : TAKING 3000K/ 4000K / 5000 K LINEAR LAMPS AS RESEARCH OBJECT","authors":"Kai Feng, L. Hao, Shujian Dai","doi":"10.25039/x48.2021.po59","DOIUrl":"https://doi.org/10.25039/x48.2021.po59","url":null,"abstract":"LED wide beam angle lamps have been widely used but might leading to glare or light pollution easily than traditional floodlighting lamps. Standards for wide beam angle products is not enough and a laboratory experiment was carried out in which visual and emotional comfort was used as evaluation items. 3 linear lamps (3000K/4000K/5000K) were used to evaluate emotional and visual comfort changes by performing different brightness or dynamic speed. Results showed that both brightness and dynamic speed could lead to negative feelings while emotional discomfort always occurs behind the eye’s discomfort. A higher brightness could leading to more negative evaluations, while some people think that medium brightness gives a more comfort feeling. A faster speed leads to more negative evaluation while some subjects prefer a medium speed (both in shading and erasure situations); In different lighting scenes, the significance of different indicators is different.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"51 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":"124860236","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
ANALYSES ON OCCUPANT PATTERNS AND ENERGY CONSUMPTION IN RESIDENTIAL BUILDINGS INCLUDING THE COVID-19 PANDEMIC 包括COVID-19大流行在内的居民楼居住模式和能耗分析
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.op34
B. Manav, E. Kaymaz
{"title":"ANALYSES ON OCCUPANT PATTERNS AND ENERGY CONSUMPTION IN RESIDENTIAL BUILDINGS INCLUDING THE COVID-19 PANDEMIC","authors":"B. Manav, E. Kaymaz","doi":"10.25039/x48.2021.op34","DOIUrl":"https://doi.org/10.25039/x48.2021.op34","url":null,"abstract":"In the last years, as a result of environmental concerns, changes in lifestyle during the COVID-19 crisis, the role of healthy buildings in addition to the main lighting design principles are highlighted. Therefore, today’s lighting design issues include social well-being, mental well-being, and physical well-being more than we discussed in the last century. Hence, we are familiar with occupant-centric and performance-based metrics for residential and non-domestic buildings. The study analyses the extended occupancy patterns, daylight availability, and annual lighting energy demand through a case study in Bursa, Turkey including the COVID-19 pandemic scenario.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"Spec No 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":"123205149","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
DEFINITION MODIFICATIONS FOR TEMPORAL LIGHT MODULATION (“FLICKER”) 修改时间光调制(“闪烁”)的定义
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.op29
N. Miller, J. Veitch
{"title":"DEFINITION MODIFICATIONS FOR TEMPORAL LIGHT MODULATION (“FLICKER”)","authors":"N. Miller, J. Veitch","doi":"10.25039/x48.2021.op29","DOIUrl":"https://doi.org/10.25039/x48.2021.op29","url":null,"abstract":"Terminology and concepts for temporal light modulation (TLM), commonly known as “flicker,” are defined and used inconsistently, even among researchers. A literature review by the authors has identified multiple meanings for multiple terms, so it is critical that a reader be able to translate from a single article’s definitions to a more universal set. A simple example is that “flicker” is used interchangeably as the stimulus as well as the response to the stimulus, as well as the direct visual response for a specific range of modulation frequencies. This paper endeavours to clarify communication among stakeholders so that effective metrics can be developed to limit unwanted physiological, psychological, behavioural, and cognitive responses to TLM. Changes to the CIE International Lighting Vocabulary are recommended.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"42 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":"126258897","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
COLOUR & LIGHT DESIGN: AMBIENCE AS AN ANSWER TO THE PROBLEMS OF A HEALTHY COLLECTIVE HOUSING. 色彩与光线设计:氛围作为健康集体住宅问题的答案。
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.po55
L. Caumon, G. Zissis, C. Caumon, E. Bécheras, C. Infantes
{"title":"COLOUR & LIGHT DESIGN: AMBIENCE AS AN ANSWER TO THE PROBLEMS OF A HEALTHY COLLECTIVE HOUSING.","authors":"L. Caumon, G. Zissis, C. Caumon, E. Bécheras, C. Infantes","doi":"10.25039/x48.2021.po55","DOIUrl":"https://doi.org/10.25039/x48.2021.po55","url":null,"abstract":"For several months now, the global pandemic that we are experiencing has highlighted that the quality of the habitat has a proven impact on our quality of life. In this context, it becomes fundamental to take into account the needs of each individual. The aim of this study is to show the benefits of designing the right atmosphere for the place and the needs of all inhabitants. Designing the ambience of a space leads us to anticipate the environment that will influence the subject who lives there. The design of the colour and light atmosphere contributes to improving the quality of life by ensuring a certain comfort in their daily activities. Through a case study, we will present an analysis protocol to examine a visual environment. The data collected will allow designers to move towards a more sensitive and adapted design of lighting and colour applied to collective housing.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"97 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":"130222975","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
ACCURATE MEASUREMENT OF ULTRAVIOLET LIGHT-EMITTING DIODES 紫外发光二极管的精确测量
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.op43
C. Yuqin Zong, Cameron A. Miller
{"title":"ACCURATE MEASUREMENT OF ULTRAVIOLET LIGHT-EMITTING DIODES","authors":"C. Yuqin Zong, Cameron A. Miller","doi":"10.25039/x48.2021.op43","DOIUrl":"https://doi.org/10.25039/x48.2021.op43","url":null,"abstract":"We have developed a new calibration capability for 200 nm to 400 nm ultraviolet light-emitting diodes (UV LEDs) using a Type D gonio-spectroradiometer. The recently-introduced mean differential continuous pulse (M-DCP) method is used to overcome the measurement difficulty associated with the initial forward voltage, VF, anomaly of a UV LED, which makes it impossible to use VF to infer junction temperature, TJ, during pulsed operation. The new measurement facility was validated indirectly by comparing the measured total luminous flux of a white LED with that measured using the NIST’s 2.5 m absolute integrating sphere. The expanded calibration uncertainty for the total radiant flux is approximately 2 % to 3 % (k = 2) depending the wavelength of the UV LED.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"44 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":"132936668","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
TOWARDS AN AVIAN FLICKER VISIBILITY MEASURE 向鸟类闪烁能见度测量方向
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.po03
D. Sekulovski, M. Perz, A. Stephan
{"title":"TOWARDS AN AVIAN FLICKER VISIBILITY MEASURE","authors":"D. Sekulovski, M. Perz, A. Stephan","doi":"10.25039/x48.2021.po03","DOIUrl":"https://doi.org/10.25039/x48.2021.po03","url":null,"abstract":"We propose a measure of temporal light quality that could be used to design flicker-free light sources, as perceived by birds. It can be applied to, among others, the poultry industry to reduce the negative impact of the modulated light on chicken health and well-being. The model is built by modifying an existing human flicker visibility model considering properties of bird vision. We discuss the implications of the model responses on the temporal quality of relevant historical light sources.","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":"114249650","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
ON SENSITIVITY TO GLARE AND ITS RELATIONSHIP WITH MACULAR PIGMENT 对眩光的敏感性及其与黄斑色素的关系
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.op21
Sneha Jain, J. Wienold, M. Andersen
{"title":"ON SENSITIVITY TO GLARE AND ITS RELATIONSHIP WITH MACULAR PIGMENT","authors":"Sneha Jain, J. Wienold, M. Andersen","doi":"10.25039/x48.2021.op21","DOIUrl":"https://doi.org/10.25039/x48.2021.op21","url":null,"abstract":"Current trends in discomfort glare research have suggested the influence of physiological parameters on individual glare perception. To this end, we hypothesize that a specific ocular physiology characteristic, namely the macular pigment (MP) in the retina, could have an influence on glare sensitivity, encouraged by recent findings from the literature that have shown that high MP levels were indicative of better visual performance. This study investigates whether a person’s sensitivity to glare could be somehow correlated to their macular pigment optical density (MPOD). We measured MPOD in 56 participants and compared it with their discomfort glare thresholds, which were determined psychophysically by exposing the participants to a series of lighting conditions varying in intensity. We found that the influence of MPOD on glare sensitivity is borderline significant with small effect size but does not follow intuition. Additional data will be required to validate and refine these initial findings.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"12 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":"114585265","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
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