Realization of photometric standards by ECARs and trap detectors: a comparison of different methods

Stefania Castelletto; Maria Luisa Rastello

doi:10.1117/12.221417

26 September 1995 Realization of photometric standards by ECARs and trap detectors: a comparison of different methods

Stefania Castelletto, Maria Luisa Rastello

Proceedings Volume 2550, Photodetectors and Power Meters II; (1995) https://doi.org/10.1117/12.221417
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

This paper presents a comparison of two different methods for the realization of the SI unit of luminous intensity, the candela. A measurement system has been set up at IEN for comparing results obtained by a standard ECAR technique with those based on the work of Ikonen et al. on trap detectors. The paper highlights some of the problems encountered; preliminary results show that the agreement between the two methods is within the declared uncertainty and suggests promising areas for future works.

Citation Download Citation

Stefania Castelletto and Maria Luisa Rastello "Realization of photometric standards by ECARs and trap detectors: a comparison of different methods", Proc. SPIE 2550, Photodetectors and Power Meters II, (26 September 1995); https://doi.org/10.1117/12.221417

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