Light phenomena in architecture and their relation to the illumination and texture
In architecture there are some optical phenomena always referred to as <light >. By extracting these light phenomena from architectural reviews and comments and investigating their characteristics, it has turned out that the <light > appears when surfaciness or objectivity is reduced. We classified these phenomena by applying the modes of color appearance proposed by D. Katz in the previous paper. Film color, volume color and luminosity, more precisely the transitions to these modes, are probably the most important and interesting light phenomena in architectural design. In this paper the pre-luminous super white appearance, named <fluorence >, which appears between surface color and luminosity, was brought into focus.For architectural design not only phenomenological descriptions but also concrete techniques, in other words engineering solutions, are necessary. Appearance of the fluorence is relevant to the theory of lightness perception, so the anchoring theory by A.Gilchrist was applied to clarify the fluorence conditions on flat surfaces. Then the influence of surface roughness to the fluorence threshold was examined. As a consequence it turned out that the appearance of fluorence was basically predictable by the Gilchrist theory, but the target with texture became fluorence more easily with the low luminance than the matte and flat surfaces did.
Light Phenomena Illumination Texture Luminosity Fluorence
Yoshizawa, Nozomu
Kanto Gakuin University
国际会议
26th Session of the CIE(国际照明委员会（CIE）第26届大会)
北京
英文
613-616
2007-07-04（万方平台首次上网日期，不代表论文的发表时间）