| Zugriffsnummer | 21995 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Determination of the quality index "Nonlinearity" of Imaging Luminance Measurement Device (ILMD) |
| Autor(in); Institution |
Zschenker, André; 4.1, Photometrie und Angewandte Radiometrie, PTB-Braunschweig
Sperling, Armin; 4.1, Photometrie und Angewandte Radiometrie, PTB-Braunschweig
Schmidt, Franz; TechnoTeam GmbH, Ilmenau, GERMANY
Krüger, Udo; TechnoTeam GmbH, Ilmenau, GERMANY
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| Quelle/Jahr | Proceedings of the CIE Expert Symposium on Advances in Photometry and Colorimetry:(2008), 15 - 20 |
| Schriftenreihe | CIE X: 033 |
| ISBN | 978-3-901906-73-2 |
| Verlag | Vienna: CIE |
| Konferenzangaben | 2008 CIE Expert Symposium on Advances in Photometry and Colorimetry, Turin, 07-08, July, 2008, Italy |
| Freie Schlagworte | integration time method ; luminance ; distance method ; luminance camera ; ILMD ; nonlinearity ; quality index |
| Zusammenfassung | Similary to single-element photometers, the linearity of ILMDs, i. e. the amplitude- and resolution dependent-ratio between the measured luminance of a light source and the output signal (display value) is restricted due to different nonlinear transfer functions. In contrast to photometers, in the case of which the linearity mainly depends on the línearity of the amplifier and/or the linearity of the AD Converter and the linearity of the detector the linearity of CCD cameras may also depend on the variation of the integration time, i.e. on the ability to store and transfer electron charge with nearly no losses. The aim of this paper is to discuss different methods which may be used to determine the nonlinearity of ILMDs and different approaches to generate the quality index ƒ3. Also available on CD-ROM. |
