Definition of Fresne. Meaning of Fresne. Synonyms of Fresne

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Definition of Fresne

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Fresnel lens
Lens Lens (l[e^]nz), n.; pl. Lenses (-[e^]z). [L. lens a lentil. So named from the resemblance in shape of a double convex lens to the seed of a lentil. Cf. Lentil.] (Opt.) A piece of glass, or other transparent substance, ground with two opposite regular surfaces, either both curved, or one curved and the other plane, and commonly used, either singly or combined, in optical instruments, for changing the direction of rays of light, and thus magnifying objects, or otherwise modifying vision. In practice, the curved surfaces are usually spherical, though rarely cylindrical, or of some other figure. Lenses Note: Of spherical lenses, there are six varieties, as shown in section in the figures herewith given: viz., a plano-concave; b double-concave; c plano-convex; d double-convex; e converging concavo-convex, or converging meniscus; f diverging concavo-convex, or diverging meniscus. Crossed lens (Opt.), a double-convex lens with one radius equal to six times the other. Crystalline lens. (Anat.) See Eye. Fresnel lens (Opt.), a compound lens formed by placing around a central convex lens rings of glass so curved as to have the same focus; used, especially in lighthouses, for concentrating light in a particular direction; -- so called from the inventor. Multiplying lens or glass (Opt.), a lens one side of which is plane and the other convex, but made up of a number of plane faces inclined to one another, each of which presents a separate image of the object viewed through it, so that the object is, as it were, multiplied. Polyzonal lens. See Polyzonal.
Fresnel lens
Fresnel lens Fres`nel" lens" [See Fresnel lamp.] (Optics) See under Lens.

Meaning of Fresne from wikipedia

- Look up fresne in Wiktionary, the free dictionary. Fresne may refer to: Communes in France Fresne, Le Fresneand Fresné is the name or part of the name...
- Fresnes may refer to the following places in France: Fresnes, Côte-d'Or, in the Côte-d'Or département Fresnes, Loir-et-Cher, in the Loir-et-Cher département...
- Saint-Côme-de-Fresné (French pronunciation: [sɛ̃ komˈ də fʁɛneˈ] ) is a commune in the Calvados department in the Normandy region in northwestern France...
- Fresné-la-Mère (French pronunciation: [fʁɛne la mɛʁ] ) is a commune in the Calvados department in the Normandy region in northwestern France. Communes...
- Le Fresne-Camilly (French pronunciation: [lə fʁɛn kamiji] ) is a commune in the Calvados department in the Normandy region in northwestern France. It is...
- Charles du Fresne, sieur du Cange (French: [ʃaʁl dy fʁɛn sjœʁ dy kɑ̃ʒ]; December 18, 1610 in Amiens – October 23, 1688 in Paris, aged 77), also known simply...
- de Fresne, DeFrense, de-fresne or variant, may refer to: Fresne du Fresne le Fresne Chevalier de Fresne (Knight of Fresne) Camille Charles Leclerc, chevalier...
- Saint-Pierre-du-Fresne (French pronunciation: [sɛ̃ pjɛʁ dy fʁɛn] ) is a commune in the Calvados department in the Normandy region in northwestern France...
- "Le Fresne" is one of the Lais of Marie de France. It was likely written in the late 12th century. Marie claims it to be a Breton lai, an example of Anglo-Norman...
- Marc-Joseph Marion du Fresne (22 May 1724 – 12 June 1772) was a French privateer, East India captain and explorer. The expedition he led to find the hypothetical...