著者

関 秀光

出版者

一般社団法人 照明学会

雑誌

照明学会雑誌 (ISSN:00192341)

巻号頁・発行日

vol.49, no.3, pp.107-111, 1965-03-25 (Released:2011-07-19)

著者

小島 福生

出版者

一般社団法人 照明学会

雑誌

照明学会雑誌 (ISSN:00192341)

巻号頁・発行日

vol.81, no.10, pp.924-926, 1997

著者

小島 福生 井川 憲男 田吹 允幸 伊藤 隆之

出版者

一般社団法人 照明学会

雑誌

照明学会雑誌 (ISSN:00192341)

巻号頁・発行日

vol.81, pp.170, 1997

著者

山元 摂 干潟 哲司 斉藤 昌生

出版者

一般社団法人 照明学会

雑誌

照明学会雑誌 (ISSN:00192341)

巻号頁・発行日

vol.80, pp.208, 1996

著者

梶原 浩史 山口 浩司

出版者

一般社団法人 照明学会

雑誌

照明学会雑誌 (ISSN:00192341)

巻号頁・発行日

vol.86, pp.154, 2002

著者

須永 聡

出版者

一般社団法人 照明学会

雑誌

照明学会雑誌 (ISSN:00192341)

巻号頁・発行日

vol.85, no.4, pp.288-291, 2001

著者

上野 隆士

出版者

一般社団法人 照明学会

雑誌

照明学会誌 (ISSN:00192341)

巻号頁・発行日

vol.77, no.11, pp.706-708, 1993-11-01 (Released:2011-07-19)

著者

沖 允人 中村 洋

出版者

一般社団法人 照明学会

雑誌

照明学会誌 (ISSN:00192341)

巻号頁・発行日

vol.74, no.4, pp.217-221, 1990-04-01 (Released:2011-07-19)

参考文献数

6

著者

大山 正

出版者

一般社団法人 照明学会

雑誌

照明学会雑誌 (ISSN:00192341)

巻号頁・発行日

vol.52, no.Appendix, pp.10a-15, 1968 (Released:2011-07-19)

参考文献数

19

著者

安西 良矩 大久保 啓介

出版者

一般社団法人 照明学会

雑誌

照明学会誌 (ISSN:00192341)

巻号頁・発行日

vol.74, no.5, pp.286-291, 1990-05-01 (Released:2011-07-19)

参考文献数

59

著者

江湖 俊介 阿山 みよし

出版者

一般社団法人 照明学会

雑誌

照明学会誌 (ISSN:00192341)

巻号頁・発行日

vol.100, no.10, pp.449-454, 2016-10-01 (Released:2016-12-01)

参考文献数

17

被引用文献数

1

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The previous study reported by some members of the Research Group for Glare Evaluation of Outdoor LED Light Sources established in the Illuminating Engineering Institute of Japan, showed that luminance based photometric quantities have a stronger correlation to discomfort glare evaluation than those based on equivalent veiling luminance or illuminance at the observer’s eye. They proposed the m_DGI as an index to assess the degree of discomfort glare. However, the test lights that cause strong discomfort glare were not examined there.In this study, we conducted a subjective evaluation experiment using seven types of LED streetlights including those of higher luminance in the outer environment similar to the previous study. The results revealed several findings. First, discomfort glare is strongly felt when the positional relationship between the pedestrian and lighting fixtures is in a certain range; second, light sources with spatially non-uniform luminance distribution cause a strong discomfort glare; third, GR for sports-field lighting is not suited for discomfort glare evaluation of pedestrian zones; and fourth, the relation found in the previous study was confirmed.In addition, we confirmed the versatility of m_DGI from weak to strong discomfort glare evaluation. We proposed a new index m_GR calculated using equivalent veiling luminance. Correlation to the discomfort glare evaluation is worse than m_DGI, our data indicate that m_GR is applicable to estimate a degree of discomfort glare in practical situations.

著者

藤木 顯文

出版者

一般社団法人 照明学会

雑誌

照明学会雑誌 (ISSN:00192341)

巻号頁・発行日

vol.28, no.8, pp.215-218, 1944 (Released:2011-07-19)

著者

大山 能永 廣川 純一 山口 亮 井川 憲男 望月 菜穂子 似鳥 雅則

出版者

一般社団法人 照明学会

雑誌

照明学会誌 (ISSN:00192341)

巻号頁・発行日

vol.86, no.Appendix, pp.136-137, 2002 (Released:2011-07-19)

著者

坂上 美香 明石 行生 梅野 千絵 八木 昭宏

出版者

一般社団法人 照明学会

雑誌

照明学会誌 (ISSN:00192341)

巻号頁・発行日

vol.81, no.5, pp.385-390, 1997-05-01 (Released:2011-07-19)

参考文献数

15

被引用文献数

4 8

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We compared the concentration levels of subjects under several lighting conditions in which the ratio of the task illuminance to the ambient illuminance was varied.In order to evaluate the subjects' levels of concentration, subjective appraisals and measurements of the subjects' lambda responses (one of the brain's responses) were carried out. The results showed a close correlation between the subjective appraisals and the measured lambda responses.We found that lighting in which the ratio of the ambient illuminance to the task illuminance was from 0.02 to 0.3 provided the optimum conditions for concentration.

著者

東 堯

出版者

一般社団法人 照明学会

雑誌

照明学会雑誌 (ISSN:00192341)

巻号頁・発行日

vol.26, no.6, pp.231-250, 1942 (Released:2011-07-19)

著者

関根 征士

出版者

一般社団法人 照明学会

雑誌

照明学会誌 (ISSN:00192341)

巻号頁・発行日

vol.80, no.5, pp.354-363, 1996-05-01 (Released:2011-07-19)

参考文献数

28

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The correlated color temperature (CCT) of total skylight, which comes to a horizontal plane from all sky components, varies hourly with atmospheric transmittance pv and the amount of cloud m. The parameter pvcaused by visible solar radiation is calculated from the atmospheric transmittance based on direct solar radiation. A new practical formula for estimating the CCT of the total skylight is proposed. Using the formula, the CCTs of the total skylight at 14 areas in Japan are calculated from the parameter pv and the number of days that is calculated from the parameter m. Consequently, it is estimated that variation in the CCT of daylight is 5900K to 8000K. The mean CCT of total skylight is 6800K, where the mean CCT of global light is 5900K and that of the total skylight for the parameter m=0 is 8000K.

著者

野口 公喜 白川 修一郎 駒田 陽子 小山 恵美 阪口 敏彦

出版者

一般社団法人 照明学会

雑誌

照明学会誌 (ISSN:00192341)

巻号頁・発行日

vol.85, no.5, pp.315-322, 2001-05-01 (Released:2011-07-19)

参考文献数

25

被引用文献数

2 2

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The effects of simulating dawn lighting with an ordinary ceiling light on the quality of awakening were investigated. The subjects were healthy men, aged 24-27. After sleep for about 7 hours with polysomnographic recordings in a climatic chamber kept at a temperature of 25t and a relative humidity of 50%, each subject was awakened by an alarm. For the 30 minutes immediately before the subject was awakened, the illumination in the chamber was gradually increased, simulating the condition of waking up as the sun rises. Alpha attenuation test, measuring blood pressure and awakening feelings were conducted after awakening.The time of sleep stage 2 appearing during the 30-minute simulating dawn lighting was significantly less (p<0.05; Wilcoxon test) than during typical waking conditions (i. e., waking up in the dark), while the time of stage W was higher (p=0.0796). The mood after awakening in the simulatig dawn lighting condition was significantly better (p<0.05). There were no significant differences in the alpha attenuation coefficients and blood pressures after awakening between the two conditions.These results suggest that simulating dawn lighting arouses subjects to light sleep, which makes awakening less sudden and more pleasant. There was no evidence that the light sleep immediately before awakening decreased the subjects' cerebral cortex activity or sympathetic nervous activity after awakening.

出版者

一般社団法人 照明学会

雑誌

照明学会雑誌 (ISSN:00192341)

巻号頁・発行日

vol.48, no.9, pp.plate1-plate2, 1964-09-25 (Released:2011-07-19)

著者

山田 知生 太田 誠 高橋 昌司

出版者

一般社団法人 照明学会

雑誌

照明学会雑誌 (ISSN:00192341)

巻号頁・発行日

vol.44, no.3, pp.139-142, 1960-03-25 (Released:2011-07-19)

参考文献数

4

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The preparation, structure and photoconductive characteristics of the CdS sintered layer cell are described.The photoconductive characteristics of the CdS sintered layer are dependent on the CdS composition, layer preparative techniques and structures of the unit.And its photoconductive properties are similar to those of the huge CdS crystal.The features of the photoconductive cell prepared by using this layer are that it has a high sensitivity, an extensive spectral-sensitivity and can get a large photo-current.

著者

山口 勝也

出版者

一般社団法人 照明学会

雑誌

照明学会雑誌 (ISSN:00192341)

巻号頁・発行日

vol.49, no.5, pp.247-253, 1965-05-25 (Released:2011-07-19)

参考文献数

16