a hollow body having an interior of highly light reflecting but also diffusing material, and having relatively small openings in the shell of the hollow body to admit light
a hollow, spherical optical chamber coated internally with a high reflectance material that exhibits lambertian (ie diffuse) reflectance
an optical device for various purposes such as measuring the optical flux from a laser diode , light-emitting diode (LED) or bulb, or measuring scattering losses from a surface
A hollow sphere coated internally with a white diffusing material and provided with openings for incident beam, specimen and detector used for measuring the diffuse reflectance or transmittance of objects.
An Integrating sphere is an optical component consisting of a hollow cavity with its interior coated for diffuse high reflectance (i.e., white), having relatively small holes as needed for entrance and exit ports. The shape of the cavity is commonly spherical, hence the name. Its relevant property is a uniform scattering or diffusing effect.