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出典:『Wikipedia』 (2011/05/15 19:39 UTC 版)

英語による解説

引用

An Integrating sphere (also known as an Ulbricht sphere) is an optical component consisting of a hollow cavity with its interior coated for high diffuse reflectivity (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. Light rays incident on any point on the inner surface are, by multiple scattering reflections, distributed equally to all other such points and effects of the original direction of such 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.