| Zugriffsnummer | 39282 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Determination of stray-light and interreflection at a table-top near-field goniophotometer |
| Autor(in); Institution |
Ledig, Johannes; 4.1, Photometrie und Spektroradiometrie, PTB-Braunschweig
Bizjak, Grega; University of Ljubljana, Faculty of Electrical Engineering, Ljubljana, SLOVENIA
Gerloff, Thorsten; 4.1, Photometrie und Spektroradiometrie, PTB-Braunschweig
Sperling, Armin; 4.1, Photometrie und Spektroradiometrie, PTB-Braunschweig
|
| Quelle/Jahr | CIE 2017 Midterm Meeting Proceedings:(2017), 208 - 217 |
| Schriftenreihe | CIE: x044:2017 |
| Availability | [CD-ROM] |
| ISBN | 978-3-901906-95-4 |
| DOI | |
| Verlag | Vienna: CIE Central Bureau |
| Konferenzangaben | CIE 2017 Midterm Meeting, Jeju, 23-25, October, 2017, Republic of Korea |
| Freie Schlagworte | total luminous flux ; ray data ; stray-light ; interreflection ; ILMD ; near-field goniophotometer ; LED |
| Zusammenfassung | The stray-light characteristic of a near-field goniophotometer with respect to the integral luminous flux obtained from photometer measurements is evaluated by comparing the measurements of lamps with different emission directionality (luminous intensity distribution, LID), e.g. by means of a wide or narrow beam. The asymmetry of the setup related stray-light is discussed in detail by measurements of a narrow LID with non-rotational symmetry and demonstrate the impact of scanning mode. We present a route to estimate and experimentally determine the impact of stray-light (to the photometer) and interreflection between the environment and the lamp. For comparison, a ray-tracing simulation is performed verifying the indirect reflection allocated to the setup and enclosure. |
