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lens of material

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  • Lens flare — is the light scattered in lens systems through generally unwanted image formation mechanisms, such as internal reflection and scattering from material inhomogeneities in the lens. These mechanisms differ from the intended image formation… …   Wikipedia

  • lens´less — lens «lehnz», noun, plural lens|es. 1. a curved piece of glass, or something like glass, that will bring closer together or send wider apart the rays of light passing through it. The lens of a camera forms images. The lenses of a telescope make… …   Useful english dictionary

  • lens — ► NOUN 1) a piece of transparent material with one or both sides curved for concentrating or dispersing light rays. 2) the light gathering device of a camera, containing a group of compound lenses. 3) Anatomy the transparent elastic structure… …   English terms dictionary

  • Lens (optics) — For other uses, see Lens. A lens. Lenses can be used to focus light. A lens is an optical device with perfect or approximate axial symmetry which tra …   Wikipedia

  • Lens clock — A lens clock is a mechanical dial caliper that is used to measure dioptric power of a lens. It is a specialized version of a spherometer. A lens clock measures the curvature of a surface, but gives the result in diopters, assuming the lens is… …   Wikipedia

  • Lens — The transparent structure inside the eye that focuses light rays onto the retina (the nerve layer that lines the back of the eye, senses light and creates impulses that go through the optic nerve to the brain). The lens was named after the lentil …   Medical dictionary

  • lens — I. noun Etymology: New Latin lent , lens, from Latin, lentil; from its shape Date: 1673 1. a. a piece of transparent material (as glass) that has two opposite regular surfaces either both curved or one curved and the other plane and that is used… …   New Collegiate Dictionary

  • Material culture — In the social sciences, material culture is a term that refers to the relationship between artifacts and social relations. Studying a culture s relationship to materiality is a lens through which social and cultural attitudes can be discussed. It …   Wikipedia

  • lens —    Physically essential to sight, a transparent tissue that bends light passing through the eye. To focus light, the lens can change shape by bending. Also, a transparent piece of glass or another material, which is shaped to focus the passage of …   Glossary of Art Terms

  • lens — noun 1》 a piece of glass or other transparent material with one or both sides curved for concentrating or dispersing light rays.     ↘Anatomy the transparent elastic structure behind the iris by which light is focused on to the retina of the eye …   English new terms dictionary

  • lens —    One or more pieces of optical glass or similar material designed to collect and focus rays of light to form a sharp image on the film, paper or projection screen …   Forensic science glossary

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