螢光物質の分光反射率の測定
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概要
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Spectrophotometric methods with monochromatic light sources are being widely used in dyestuff and paint industries for the measurement of fluorescent characteristics of materials. These methods are not practical when we wonder how the characteristics would be in sunlight or under incandescent tungsten-filament and fluorescent lamps.<BR>A new type fluorescence reflectance measuring attachment for recording spectrophotometers is devised. As the light source, a 500 W Xe lamp regarded as the nearest approach to the sunlight is used.The light falls perpendicularly on the sample and a standard white surface simultaneously and the reflected lights in 45° direction fall alternately on the slit of the recording spectrophotometer by means of a set of plane and concave mirrors.Curves of spectral reflectance in a range of 370-700 mμ are recorded on charts.<BR>Several colored samples of fluorescent and non-fluorescent finished sheets of cloth have been measured and the results are compared with the data obtained on a Hardy-type spectrophotometer.
- 社団法人 日本分光学会の論文