From Event: SPIE Optical Engineering + Applications, 2016
In a previous work, we described the theoretical fundamentals for the design of radiance meters. There, we observed that the length between the first and the second aperture of the instrument plays an important role in the performance of the meter. Such a length is a parameter related with the instrument response to variations of the size of the source and of the distance between the instrument and the source. Such dependences are not predicted by the theory of geometrical optics, normally used in the instrument design. Even the approximation of wave optics gives a partial understanding of the propagation of optical radiation. A more general treatment, based in the theory of partial coherence, gives a better description of the propagation.
J. G. Suárez-Romero, J. C. Solorio-Leyva, and J. B. Hurtado-Ramos, "Design of a radiance meter with predicted size of source and distance effects," Proc. SPIE 9947, Current Developments in Lens Design and Optical Engineering XVII, 99470L (Presented at SPIE Optical Engineering + Applications: September 01, 2016; Published: 13 October 2016); https://doi.org/10.1117/12.2238394.
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