Definition of Etendue. Meaning of Etendue. Synonyms of Etendue

- Etendue or étendue (/ˌeɪtɒnˈduː/; French pronunciation: [etɑ̃dy]) is a property of light in an optical system, which characterizes how "spread out" the...
- surface is immersed; G is the étendue of the light beam. As the light travels through an ideal optical system, both the étendue and the radiant flux are conserved...
- system. The volume occupied by a set of rays in phase space is called etendue, which is conserved as light rays progress in the optical system along...
- stationary medium. The term étendue is used to focus attention specifically on the geometrical aspects. The reciprocal character of étendue is indicated in the...
- Ж2 is proportional to the throughput of the optical system (related to étendue). For a given optical system, the Lagrange invariant is a constant throughout...
- }=n^{2}{\frac {\mathrm {d} \Phi _{\mathrm {v} }}{\mathrm {d} G}}} where dG is the etendue of an infinitesimally narrow beam containing the specified ray; dΦv is...
- a projected area and the solid angle; this product is often called the etendue. This step can be obviated by the use of a calibrated source, where the...
- potentially powerful, did not yet find a practical application. Conservation of etendue is a central concept in nonimaging optics. In concentration optics, it...
- November 1914. L. Torres Quevedo. Essais sur l'Automatique - Sa définition. Etendue théorique de ses applications Archived 2023-02-10 at the Wayback Machine...
- Torres Quevedo. L. (1915). "Essais sur l'Automatique – Sa définition. Etendue théorique de ses applications", Revue Génerale des Sciences Pures et Appliquées...