2 0 0 0 沖縄県立中部病院における外傷研修
1 0 0 0 OA 照度計相対分光応答度測定の国内比較
- 著者
- 中川 靖夫 大久保 和明 堀内 元美 戸沢 均 小林 健二 堀江 和泉 千田 直道
- 出版者
- 社団法人照明学会
- 雑誌
- 照明学会誌 (ISSN:00192341)
- 巻号頁・発行日
- vol.82, no.8A, pp.588-593, 1998
An intercomparison of relative spectral responsivity measurements of illuminance meters was carried out among five companies-TOPCON, HIOKI, Minolta Co., Ltd., Yokogawa M&C Corp.and Matushita Electric Industrial Co., Ltd. The spectral responsivity of the illuminance meters were measured by each company's spectral responsivity measurement system calibrated to each company's standard. As a result, the measured values of f_s(f_s is error definition of relative spectral responsivity recommended by Japanese Industrial Standard JIS-C-1609)were different within 1.7. The f_s is identical with f_1' recommended by CIE.
1 0 0 0 OA 三刺激値計算のための重価係数の求めかた
- 著者
- 大久保 和明 側垣 博明
- 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.6, pp.364-370, 1993-06-01 (Released:2011-07-19)
- 参考文献数
- 4
For reflecting or transmitting object colours, the CIE tristimulus vslues of a colour stimulus are obtained by multiplying, at each wavelength, the value of the weigthing factors by that of each of the spectral reflectance or the spectral transmittance of the object colour. Then each set of products is integrated over the wavelength range corresponding to the entire visible spectrum, 380 to 780nm. The integration may be carried out by numerical summation at a wavelength interval, equal to 5nm. The weigthing factors are obtained by multiplying, at each wavelength, the value of the relative spectral power distribution of the illuminant by the CIE colour-matching functions.In practical applications, all the required data may not be available because of measurement at greater intervals intervals than 5nm, equal to the 10nm or 20nm intervals data. In this paper, the method for the calculation of the weigthing factors for the 10nm or 20nm intervals measurenent data using interpolation is reported.
1 0 0 0 NBS標準蛍光体の量子効率の測定
- 著者
- 大久保 和明 重田 照明
- 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.83, no.2, pp.87-93, 1999-02-01
- 被引用文献数
- 9
The absolute fluorescent quantum efficiencies of NBS phosphor standard samples which were excited by a 254nm radiation were measured by a polychromator. The polychromator was calibrated by a conical cavity thermal radiation detector, which used polyvinylidene fluoride (PVDF) films, coated inside with gold black absorber. The effective spectral absorptance of the derector was constant within 0.3% over a wavelength region of 200〜600nm. Reproducibility of the absolute fluorescent quantum efficiency was within ±0.02. The relative values of fluorescent quantum emitted per 254nm incident radiation quantum agreed with the NBS data within 3%. The fluorescent quantum efficiency of NBS phosphor standard samples (NBS 1027) was 0.81.