Pub Date : 2017-03-10DOI: 10.2150/JLVE.IEIJ150000569
Shigeo Kobayashi, Masahide Kakudate
This research targeted a suburban area in Rikuzen-Takata of the Tohoku district in Japan where large numbers of temporary buildings have been built after the great earthquake 2011. The research aimed to install adequate light fixtures which guide people to higher ground and provide them with the safety and comfort in daily life. The lighting design was examined based on the knowledge of several field surveys and previous researches. Finally, a total of 179 lights, such as incandescent bulbs were attached. The questionnaire survey to residents was carried out before or after the lighting installation. As a result, it was confirmed that the recognition of entrances to evacuate or the evacuation directions which guide to higher ground had increased enough compared with the previous situation. It was also confirmed in the temporary shopping district or the construction office that surrounding visibility and safety had been improved by lighting. The lighting social experiment was conducted over September 2013 to about one month. Most light fixtures have been continuously maintained by residents even after the end of the experiment.
{"title":"The Lighting Installation for Evacuation Guidance and the Outdoor Areas in Temporary Architecture Group District","authors":"Shigeo Kobayashi, Masahide Kakudate","doi":"10.2150/JLVE.IEIJ150000569","DOIUrl":"https://doi.org/10.2150/JLVE.IEIJ150000569","url":null,"abstract":"This research targeted a suburban area in Rikuzen-Takata of the Tohoku district in Japan where large numbers of temporary buildings have been built after the great earthquake 2011. The research aimed to install adequate light fixtures which guide people to higher ground and provide them with the safety and comfort in daily life. The lighting design was examined based on the knowledge of several field surveys and previous researches. Finally, a total of 179 lights, such as incandescent bulbs were attached. The questionnaire survey to residents was carried out before or after the lighting installation. As a result, it was confirmed that the recognition of entrances to evacuate or the evacuation directions which guide to higher ground had increased enough compared with the previous situation. It was also confirmed in the temporary shopping district or the construction office that surrounding visibility and safety had been improved by lighting. The lighting social experiment was conducted over September 2013 to about one month. Most light fixtures have been continuously maintained by residents even after the end of the experiment.","PeriodicalId":311488,"journal":{"name":"Journal of Light & Visual Environment","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129481075","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}
Pub Date : 2017-03-10DOI: 10.2150/JLVE.IEIJ150000571
Keiichi Mochizuki, Sakurai Kenji, Yoshinori Shinohara, A. Tagaya, Y. Koike
We propose a light-emitting diode (LED) flat lighting panel that is capable of seamless connection by optimizing the shape of the optical elements, as well as the concentration of the scattering particles used in the diffuser material. The LED flat lighting panels that we develop can be connected to other panels while maintaining a uniformity of 90% throughout the entire surface. The results of subjective experiments reveal that the seams between the connected LED flat panels are virtually unnoticeable. We also discuss the optimal lighting designs for using the LED flat lighting panels as bracket lighting and ceiling lighting by measuring their primary optical characteristics. In particular, the unified glare rating of the seamless panel is 19.4, which corresponds to the minimum level of uncomfortable glare. Moreover, the seamless panel exhibits a luminous efficiency as high as 79.6 lm/W, which satisfies Energy Star requirements. These evaluations show that the LED flat panel is capable of providing comfortable space and lighting designs for architecture in an environmentally friendly manner.
{"title":"LED flat panel capable of seamless connection for use in lighting","authors":"Keiichi Mochizuki, Sakurai Kenji, Yoshinori Shinohara, A. Tagaya, Y. Koike","doi":"10.2150/JLVE.IEIJ150000571","DOIUrl":"https://doi.org/10.2150/JLVE.IEIJ150000571","url":null,"abstract":"We propose a light-emitting diode (LED) flat lighting panel that is capable of seamless connection by optimizing the shape of the optical elements, as well as the concentration of the scattering particles used in the diffuser material. The LED flat lighting panels that we develop can be connected to other panels while maintaining a uniformity of 90% throughout the entire surface. The results of subjective experiments reveal that the seams between the connected LED flat panels are virtually unnoticeable. We also discuss the optimal lighting designs for using the LED flat lighting panels as bracket lighting and ceiling lighting by measuring their primary optical characteristics. In particular, the unified glare rating of the seamless panel is 19.4, which corresponds to the minimum level of uncomfortable glare. Moreover, the seamless panel exhibits a luminous efficiency as high as 79.6 lm/W, which satisfies Energy Star requirements. These evaluations show that the LED flat panel is capable of providing comfortable space and lighting designs for architecture in an environmentally friendly manner.","PeriodicalId":311488,"journal":{"name":"Journal of Light & Visual Environment","volume":"246 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115636511","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}
Pub Date : 2017-03-10DOI: 10.2150/JLVE.IEIJ150000568
F. Leccese, C. Montagnani, Sergio Iaia, M. Rocca, G. Salvadori
In hospital buildings, such as in other large and multi-purpose buildings, a wide variety of work environments can be distinguished, each of which characterized by specific visual tasks. In hospitals the visual tasks are often very demanding and consequently the lighting should be functional to ensure efficiency, safety, hygiene and well-being of medical and auxiliary staff, during the development of their activities. For this type of buildings the activity of in situ measurements is strongly recommended in order to evaluate the quality of lighting and also to perform a lighting risk assessment. In this paper an extensive lighting measurements campaign in a hospital is described. The hospital used as a case study is the “Felice Lotti” in Pontedera (Pisa district, Tuscany Region, Italy) where illuminance and luminance measurements have been carried out for different environments with different uses typically found in hospitals. The measurement results are described and discussed in detail, with particular reference to the compliance with the requirements imposed by the technical standards.
{"title":"Quality of Lighting in Hospital Environments: A Wide Survey Through in Situ Measurements","authors":"F. Leccese, C. Montagnani, Sergio Iaia, M. Rocca, G. Salvadori","doi":"10.2150/JLVE.IEIJ150000568","DOIUrl":"https://doi.org/10.2150/JLVE.IEIJ150000568","url":null,"abstract":"In hospital buildings, such as in other large and multi-purpose buildings, a wide variety of work environments can be distinguished, each of which characterized by specific visual tasks. In hospitals the visual tasks are often very demanding and consequently the lighting should be functional to ensure efficiency, safety, hygiene and well-being of medical and auxiliary staff, during the development of their activities. For this type of buildings the activity of in situ measurements is strongly recommended in order to evaluate the quality of lighting and also to perform a lighting risk assessment. In this paper an extensive lighting measurements campaign in a hospital is described. The hospital used as a case study is the “Felice Lotti” in Pontedera (Pisa district, Tuscany Region, Italy) where illuminance and luminance measurements have been carried out for different environments with different uses typically found in hospitals. The measurement results are described and discussed in detail, with particular reference to the compliance with the requirements imposed by the technical standards.","PeriodicalId":311488,"journal":{"name":"Journal of Light & Visual Environment","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134236962","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}
Pub Date : 2017-03-10DOI: 10.2150/JLVE.IEIJ16A000003
M. Furusho, M. Bessho
{"title":"100th Anniversary of IEIJ Memorial Events","authors":"M. Furusho, M. Bessho","doi":"10.2150/JLVE.IEIJ16A000003","DOIUrl":"https://doi.org/10.2150/JLVE.IEIJ16A000003","url":null,"abstract":"","PeriodicalId":311488,"journal":{"name":"Journal of Light & Visual Environment","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130784936","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}
Pub Date : 2017-03-10DOI: 10.2150/JLVE.IEIJ16A000005
S. Kubo
Lighting facilities The concept of the renovation of the lighting facilities is “achieving as much energy savings as possible” because the lighting for night games accounts for more than half of the power usage of the facility. For that reason, LED floodlights, which achieve higher light flux and longer service life than those of the conventional HID floodlights with about half the power consumption, are introduced. LED floodlights are equipped with high-heat-dissipation and high-output LED modules for high light flux, and their improved maintainability that is realized by the initial illuminance correction function and long service life provides energy savings. In addition, they are capable of instant lighting and relighting, which were not possible with HID equipment, so that they can cover a wider range of applications. Furthermore, a lighting control system has been employed for the capability to control various lighting patterns such as 1,000 lx and 500 lx. As a result, the Todoroki Athletic Stadium provides an illuminated space with a high-quality visual environment that allows football players and track and field athletes to play comfortably and vibrantly and spectators to watch plays with comfort.
{"title":"Lighting of the New Main Stand at Todoroki Athletics Stadium","authors":"S. Kubo","doi":"10.2150/JLVE.IEIJ16A000005","DOIUrl":"https://doi.org/10.2150/JLVE.IEIJ16A000005","url":null,"abstract":"Lighting facilities The concept of the renovation of the lighting facilities is “achieving as much energy savings as possible” because the lighting for night games accounts for more than half of the power usage of the facility. For that reason, LED floodlights, which achieve higher light flux and longer service life than those of the conventional HID floodlights with about half the power consumption, are introduced. LED floodlights are equipped with high-heat-dissipation and high-output LED modules for high light flux, and their improved maintainability that is realized by the initial illuminance correction function and long service life provides energy savings. In addition, they are capable of instant lighting and relighting, which were not possible with HID equipment, so that they can cover a wider range of applications. Furthermore, a lighting control system has been employed for the capability to control various lighting patterns such as 1,000 lx and 500 lx. As a result, the Todoroki Athletic Stadium provides an illuminated space with a high-quality visual environment that allows football players and track and field athletes to play comfortably and vibrantly and spectators to watch plays with comfort.","PeriodicalId":311488,"journal":{"name":"Journal of Light & Visual Environment","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127070477","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}
Pub Date : 2017-03-10DOI: 10.2150/JLVE.IEIJ150000570
Y. Ishido
Nanoporous silica glass is found to be much available for light driven hydrogen production. However, the mechanisms of production enhancement have been merely understood. From the viewpoint of optics, we try to analyze theoretically the enhancement on converging a natural light into the nanopore of a transparent substrate within photochemical species using radiant transfer model. As a result, it is found that explo-sive growing the irradiated area of the inner surface on photochemical species in the nanoporous system brings a spectral merit. However, some numerical calculations of the form factor between the outer and inner surface of the system are needed for more precise inference on its priority of light convergence to alternative fabrics.
{"title":"Radiant Transfer Analysis on Enhancement of Light Convergence into Transparent Nanoporous Substrate for Supporting Photochemical Species","authors":"Y. Ishido","doi":"10.2150/JLVE.IEIJ150000570","DOIUrl":"https://doi.org/10.2150/JLVE.IEIJ150000570","url":null,"abstract":"Nanoporous silica glass is found to be much available for light driven hydrogen production. However, the mechanisms of production enhancement have been merely understood. From the viewpoint of optics, we try to analyze theoretically the enhancement on converging a natural light into the nanopore of a transparent substrate within photochemical species using radiant transfer model. As a result, it is found that explo-sive growing the irradiated area of the inner surface on photochemical species in the nanoporous system brings a spectral merit. However, some numerical calculations of the form factor between the outer and inner surface of the system are needed for more precise inference on its priority of light convergence to alternative fabrics.","PeriodicalId":311488,"journal":{"name":"Journal of Light & Visual Environment","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134120284","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}
Pub Date : 2017-03-10DOI: 10.2150/JLVE.IEIJ140000559
K. Suehara, K. Isoda, H. Mizutani, A. Hashimoto
To eliminate the color appearance variation of the images acquired under the various lighting conditions, we have developed a simple four colored chart (Skin chart) for the color calibration of the human skin images based on the features of the human skin color. The color calibration with the Skin chart worked better than that with a standard color chart. A conventionally obtained photo-image of the pressure ulcer (PU) in medical facilities can be translated into a standard photo-image taken in the standard lighting. The present method is more convenient compared with the previously reported systems using the commercially available color charts. Accordingly, the method successfully identified the involved areas from the healthy skin areas by the color image. The newly developed method is a useful tool for the color image acquisition using conventional digital cameras for the electronic medical recording systems and for the medical consulting network by the information communication technologies (ICTs). The developed color calibration method enables simple, easy, rapid, and less expensive record for the shapes of PUs and the quantitative color distribution of the widely involved areas. Thus, this system is expected as an evaluation tool for the topical therapies for PUs in future.
{"title":"Color Calibration for the Pressure Ulcer Image Acquired Under Different Illumination: A Key Step for Simple, Rapid and Quantitative Color Evaluation of the Human Skin Diseases Using a Digital Camera","authors":"K. Suehara, K. Isoda, H. Mizutani, A. Hashimoto","doi":"10.2150/JLVE.IEIJ140000559","DOIUrl":"https://doi.org/10.2150/JLVE.IEIJ140000559","url":null,"abstract":"To eliminate the color appearance variation of the images acquired under the various lighting conditions, we have developed a simple four colored chart (Skin chart) for the color calibration of the human skin images based on the features of the human skin color. The color calibration with the Skin chart worked better than that with a standard color chart. A conventionally obtained photo-image of the pressure ulcer (PU) in medical facilities can be translated into a standard photo-image taken in the standard lighting. The present method is more convenient compared with the previously reported systems using the commercially available color charts. Accordingly, the method successfully identified the involved areas from the healthy skin areas by the color image. The newly developed method is a useful tool for the color image acquisition using conventional digital cameras for the electronic medical recording systems and for the medical consulting network by the information communication technologies (ICTs). The developed color calibration method enables simple, easy, rapid, and less expensive record for the shapes of PUs and the quantitative color distribution of the widely involved areas. Thus, this system is expected as an evaluation tool for the topical therapies for PUs in future.","PeriodicalId":311488,"journal":{"name":"Journal of Light & Visual Environment","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115608675","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}
Pub Date : 2017-03-10DOI: 10.2150/JLVE.IEIJ16A000002
H. Matsuki
{"title":"The 100th Anniversary of the IEIJ Founded in 1916","authors":"H. Matsuki","doi":"10.2150/JLVE.IEIJ16A000002","DOIUrl":"https://doi.org/10.2150/JLVE.IEIJ16A000002","url":null,"abstract":"","PeriodicalId":311488,"journal":{"name":"Journal of Light & Visual Environment","volume":"77 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133799298","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}
Pub Date : 2017-03-10DOI: 10.2150/JLVE.IEIJ160000575
Shino Okuda, K. Okajima
This study aims to clarify which spectral component is critical for preferable appearance of the skin of the women ʼ s faces in daily lives. We conducted a subjective experiment on the appearance of a woman ʼ s face with make-up. We created spectral distributions by adding or cutting a specific wavelength on a flat spectral distribution with a wavelength programmable light source. We set up 53 kinds of lighting conditions with different spectral distributions in total. We measured the skin color of the face of the female model, and transformed measured chromaticity values into RGB values of a calibrated LC-display for generating the digital images of the lower half of the face. Twenty female participants observed the cheek illuminated by one of lights with different spectral distributions and evaluated the “ naturalness ” , “ activity ” , “ sophistication ” , “ health ” , “ familiarity ” and “ preference ” of the face. The results show that the lighting including the spectral component of 534 nm makes look the women ʼ s skin worst, and the preference of women ʼ s face can be explained with three aspects, naturalness, activity and sophistication.
{"title":"Effects of Spectral Component of Light on Appearance of Skin of Woman’s Face with Make-up","authors":"Shino Okuda, K. Okajima","doi":"10.2150/JLVE.IEIJ160000575","DOIUrl":"https://doi.org/10.2150/JLVE.IEIJ160000575","url":null,"abstract":"This study aims to clarify which spectral component is critical for preferable appearance of the skin of the women ʼ s faces in daily lives. We conducted a subjective experiment on the appearance of a woman ʼ s face with make-up. We created spectral distributions by adding or cutting a specific wavelength on a flat spectral distribution with a wavelength programmable light source. We set up 53 kinds of lighting conditions with different spectral distributions in total. We measured the skin color of the face of the female model, and transformed measured chromaticity values into RGB values of a calibrated LC-display for generating the digital images of the lower half of the face. Twenty female participants observed the cheek illuminated by one of lights with different spectral distributions and evaluated the “ naturalness ” , “ activity ” , “ sophistication ” , “ health ” , “ familiarity ” and “ preference ” of the face. The results show that the lighting including the spectral component of 534 nm makes look the women ʼ s skin worst, and the preference of women ʼ s face can be explained with three aspects, naturalness, activity and sophistication.","PeriodicalId":311488,"journal":{"name":"Journal of Light & Visual Environment","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121946935","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}
Pub Date : 2017-03-10DOI: 10.2150/JLVE.IEIJ16A000004
Eiki Takeuchi
Brief summary On the east end of the Azuma-bashi bridge on Sumida River stands the Asahi Group’s Azumabashi Hall designed by Philippe Starck. At the top of the building, an enormous objet (approximately 43 m×14 m×14 m) designed by Starck is installed. The embodiment of a burning flame is called Flamme d’Or (meaning “a golden flame” in French) and symbolizes the “burning heart of Asahi Breweries making great strides.” The number of tourists visiting Taito District, Tokyo, without distinction of whether they come from within or outside Japan, amounts to about 45 million annually. In Asakusa area, which is the most popular spot of the tourist sites in Taito, there seems to be no end to those who take souvenir photographs with this objet, floating with golden glow in the night sky, as their background. Along with Tokyo Sky Tree, Flamme d’Or is a popular photo scenery from Azuma-bashi.
{"title":"Light up of “Flamme d’Or” on Asahi Group Hall Building","authors":"Eiki Takeuchi","doi":"10.2150/JLVE.IEIJ16A000004","DOIUrl":"https://doi.org/10.2150/JLVE.IEIJ16A000004","url":null,"abstract":"Brief summary On the east end of the Azuma-bashi bridge on Sumida River stands the Asahi Group’s Azumabashi Hall designed by Philippe Starck. At the top of the building, an enormous objet (approximately 43 m×14 m×14 m) designed by Starck is installed. The embodiment of a burning flame is called Flamme d’Or (meaning “a golden flame” in French) and symbolizes the “burning heart of Asahi Breweries making great strides.” The number of tourists visiting Taito District, Tokyo, without distinction of whether they come from within or outside Japan, amounts to about 45 million annually. In Asakusa area, which is the most popular spot of the tourist sites in Taito, there seems to be no end to those who take souvenir photographs with this objet, floating with golden glow in the night sky, as their background. Along with Tokyo Sky Tree, Flamme d’Or is a popular photo scenery from Azuma-bashi.","PeriodicalId":311488,"journal":{"name":"Journal of Light & Visual Environment","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125387906","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}
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