Remote Cosine Receptors (RCR) are utilized for full hemispherical absolute energy measurements. This allows the spectroradiometer to directly measure the total full hemispherical irradiance being emitted by the sun or an artificial light source as well as the corresponding full hemispherical reflectant radiance.
The NIR Community from ASD Inc., a Malvern PANalytical company
An integrating sphere is an optical accessory that is designed to provide high precision reflectance and transmittance spectral measurements. It consists of a hollow spherical cavity coated with a diffuse white reflective material. There are ports for a light source, fiber optic cable and samples.