著者

土井 滋貴 大塚 智仁 高橋 晴雄

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)

巻号頁・発行日

vol.117, no.4, pp.409-415, 1997-03-20 (Released:2008-12-19)

参考文献数

24

被引用文献数

1

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In this paper, an illuminating method with the 1/f-fluctuation is proposed to produce the peaceful lighting stage, because it is said that the 1/f-fluctuation will make a relaxed mental state.The light intensity from the normal light bulb is changed by the phase control in the A. C. power source with the 1/f-fluctuation signals generated by performing the First Fourier Transformation (FFT) on the normal random numbers and by passing through the 1/f-filter. The light power spectrum is measured by calculating the picture image from the CCD camera to check the tendency of 1/f-fluctuation in the illumination from the bulb, and also in the flame light from the candle. Physiological impression for the 1/f-fluctuating illumination is compared with the change of the heart rate in other lighting conditions: the normal lighting, and the flashing lighting using the random numbers. From the result of physiological measurements, the decrease in the heart rate for the proposed 1/f-fluctuating illumination is observed.