https://www.nist.gov/publications/integrating-sphere-system-and-method-absolute-measurement-transmittance-reflectance-and
Integrating-Sphere System and Method for Absolute Measurement of Transmittance, Reflectance and...
Feb 17, 2017 - An integrating sphere system has been designed and constructed for multiple optical property measurement in the infrared spectral range.
integrating sphere systemabsolute measurementmethod