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Concept information

astronomical technique > measuring instrument > astronomical instrument > integrating sphere

Terme préférentiel

integrating sphere  

Définition(s)

  • An integrating sphere (also known as an Ulbricht sphere) is an optical component consisting of a hollow spherical cavity with its interior covered with a diffuse white reflective coating, with small holes for entrance and exit ports. Its relevant property is a uniform scattering or diffusing effect. Light rays incident on any point on the inner surface are, by multiple scattering reflections, distributed equally to all other points. The effects of the original direction of light are minimized. An integrating sphere may be thought of as a diffuser which preserves power but destroys spatial information. It is typically used with some light source and a detector for optical power measurement. A similar device is the focusing or Coblentz sphere, which differs in that it has a mirror-like (specular) inner surface rather than a diffuse inner surface. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Integrating_sphere)

Concept(s) générique(s)

Synonyme(s)

  • Ulbricht sphere

Traductions

URI

http://data.loterre.fr/ark:/67375/MDL-QFS3WHN1-T

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RDF/XML TURTLE JSON-LD Dernière modif. 24/04/2023