The size-of-source effect in practical measurements of radiance

J. C. Solorio-Leyva, J. G. Suárez-Romero, J. B. Hurtado-Ramos, E. Tepichín-Rodríguez, J. G. Cortés-Reynoso

Producción científica: Contribución a una revistaArtículo de la conferenciarevisión exhaustiva

3 Citas (Scopus)

Resumen

One of the main sources of error when making precise measurements of radiance is the one associated to the variation in the output signal of the radiometer due to changes in the size of the source. This effect is known as the size-of-source effect (SSE). It is observed experimentally that as the size of the source increases, the output signal of the radiometer increases as well. No standard method for measuring the SSE exists. The SSE is estimated as the ratio of the output signal at a given diameter of the source to the signal at a reference diameter. One method considers this reference diameter as the diameter of an infinite source. A second method sets the reference diameter to the largest diameter experimentally possible. Commonly, the second method is the one used since it is more practical. However, the first one is a better model, even though the limit to infinite is not available experimentally. In this work, we discuss a formal method to calculate this limit. The limit can be used in the first method for a better quantification of the effect in practical measurements.

Idioma originalInglés
Número de artículo236
Páginas (desde-hasta)1243-1248
Número de páginas6
PublicaciónProceedings of SPIE - The International Society for Optical Engineering
Volumen5622
N.ºPART 3
DOI
EstadoPublicada - 2004
Publicado de forma externa
EventoRIAO/OPTILAS 2004: 5th Iberoamerican Meeting on Optics, and 8th Latin American Meeting on Optics, Lasers, and their Applications; ICO Regional Meeting - Porlamar, República Bolivariana de Venezuela
Duración: 3 oct. 20048 oct. 2004

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