Definition of Crossed lens. Meaning of Crossed lens. Synonyms of Crossed lens

Here you will find one or more explanations in English for the word Crossed lens. Also in the bottom left of the page several parts of wikipedia pages related to the word Crossed lens and, of course, Crossed lens synonyms and on the right images related to the word Crossed lens.

Definition of Crossed lens

Crossed 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.

Meaning of Crossed lens from wikipedia

- visible light are also called "lenses", such as microwave lenses, electron lenses, acoustic lenses, or explosive lenses. Lenses are used in various imaging...
- The lentil (Vicia lens or Lens culinaris) is a legume; it is an annual plant grown for its lens-shaped edible seeds, also called lentils. It is about...
- Refraction:[citation needed] Trial frames Trial lens box & confirmation set: Including the pinhole and occluder Jackson Cross Cylinder: a combination of two cylinders...
- Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic devices used by over...
- A Fresnel lens (/ˈfreɪnɛl, -nəl/ FRAY-nel, -⁠nəl; /ˈfrɛnɛl, -əl/ FREN-el, -⁠əl; or /freɪˈnɛl/ fray-NEL) is a type of composite compact lens which reduces...
- Google Contact Lens was a smart contact lens project announced by Google on 16 January 2014. The project aimed to ****ist people with diabetes by constantly...
- lens or asphere (often labeled ASPH on eye pieces) is a lens whose surface profiles are not portions of a sphere or cylinder. In photography, a lens ****embly...
- The Einstein Cross (Q2237+030 or QSO 2237+0305) is a gravitationally lensed quasar that sits directly behind the centre of the galaxy ZW 2237+030, called...
- The lens, or crystalline lens, is a transparent biconvex structure in most land vertebrate eyes. Relatively long, thin fiber cells make up the majority...
- A camera lens, photographic lens or photographic objective is an optical lens or ****embly of lenses (compound lens) used in conjunction with a camera...