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Your search keyword '"Brill, Michael H."' showing total 519 results
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519 results on '"Brill, Michael H."'

4. Kubelka, Paul

Author

Brill, Michael H., Vik, Michal, Shamey, Renzo, Section editor, and Shamey, Renzo, editor

Published
2023
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13. Chromaticity

Author

Brill, Michael H., Deguchi, Koichiro, Section editor, and Ikeuchi, Katsushi, editor

Published
2021
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22. New method of whiteness calibration of spectrophotometers.

Author

Brill, Michael H. and Xu, Zhiling

Subjects
*SPECTROPHOTOMETERS, *CALIBRATION, *QUADRATIC equations, *REFERENCE values, *REFLECTANCE, *FLUORESCENCE
Abstract

A method is described for determining and calibrating the CIE Whiteness Index (WI) of an OBA‐treated specimen without incorporating into the measurement system a mechanically adjustable UV filter. The method requires spectrophotometric measurement of the specimen under two lights: UV‐excluded to infer the reflectance r(λ) and UV to infer the fluorescence profile f(λ). Also required is a stored illuminant spectrum Iin(λ) that covers at least the whole visible wavelengths. Only one scalar value k is then needed to mathematically characterize the total spectral radiance factor (TSRF) of the same specimen under Iin(λ). Calibration uses a reference specimen with known WI, and adjusts k until the computed WI matches the reference WI value. If Iin(λ) is the illuminant chosen from ASTM E313 to define the WI, the k adjustment reduces to solving a single quadratic equation for k that involves the reference WI. In general, relative to directly measuring a specimen's TSRF, it is more instrument‐independent to use the current method to characterize TSRF. Therefore, if a fluorescent specimen is measured using UV and UV‐excluded illuminants, a complete, instrument‐stable characterization of the specimen's TSRF can be derived by adjusting k, which can be done through a closed‐form relation of k to the WI. [ABSTRACT FROM AUTHOR]

Published
2023
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26. Problems

Author

Holing, Kent, Chao, Wu Wei, Klamkin, Murray S., Niculescu, Constantin P., Wee, Hoe-Teck, Efthimiou, Costas, Radu, Mircea, Fischer, Ismor, Woltermann, Michael, Risteski, Ice B., Arrigo, Danny, Otto, Debra P., Cook, Charles K., Brill, Michael H., Zimmerman, Seth, Wong, Yan-Loi, Fukuta, Jiro, and Reid, Michael

Published
2000
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27. Problems

Author

Fischer, Ismor, Risteski, Ice B., Brill, Michael H., Fukuta, Jiro, McGeachie, Michael, Wagon, Stan, Rosenholtz, Ira, Zimmerman, Seth, Just, Erwin, Christopher, John, Getz, Marty, Jones, Dixon, Klein, Benjamin G., Holshouser, Arthur L., Zarnowski, Roger, Diminnie, Charles, White, Homer, Bailey, Robert, Peng, Gao, and Richardson, Ken

Published
1999
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