= Integrating Sphere Theory and Applications by Labsphere
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https://labsphere.com/wp-content/uploads/2021/09/Integrating-Sphere-Theory-and-Applications.pdf
Primary Labsphere technical guide. Section3.1.3, Cosine Receptor, describes experimental characterization of angular response. Sections3.2–3.2.2 discuss reflectance/transmittance collection, baffles, specular inclusion or exclusion, and measurement geometry. The guide carries copyright2017; no individual byline is given.
https://labsphere.com/wp-content/uploads/2021/09/Integrating-Sphere-Theory-and-Applications.pdf[Sections1.0–1.3: diffuse-wall radiation exchange, port fraction, sphere multiplier and spatial integration; section1.4: temporal response; section2.3: baffles and detector field of view]
https://labsphere.com/wp-content/uploads/2021/09/Integrating-Sphere-Theory-and-Applications.pdf[Section1.2, printedp2, equations6–12: total port area fraction and repeated-reflection geometric series with survival factor rho(1-f). Section1.2.2, printedp3, distinguishes the zero-port-reflectance model from average-reflectance generalizations. Section3.1.3 describes cosine-receptor characterization.]
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