lens combination

См. также в других словарях:

• 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 speed — refers to the maximum aperture diameter, or minimum f number, of a photographic lens. A lens with a larger maximum aperture (that is, a smaller minimum f number) is a fast lens because it delivers more light intensity (illuminance) to the focal… …   Wikipedia

• lens — [lenz] n. [L, lentil: from the resemblance to the shape of a lentil] 1. a) a piece of glass, or other transparent substance, with two curved surfaces, or one plane and one curved, regularly bringing together or spreading rays of light passing… …   English World 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 — lensless, adj. lenslike, adj. /lenz/, n., pl. lenses, v. n. 1. a piece of transparent substance, usually glass, having two opposite surfaces either both curved or one curved and one plane, used in an optical device in changing the convergence of… …   Universalium

• 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

• lens — [[t]lɛnz[/t]] n. pl. lens•es 1) opt a piece of transparent substance, usu. glass, having two opposite surfaces either both curved or one curved and one plane, used in optical devices for changing the convergence of light rays, as for… …   From formal English to slang

• lens — /lɛnz / (say lenz) noun (plural lenses) 1. a piece of transparent substance, usually glass, having two (or two main) opposite surfaces, either both curved or one curved and one plane, used for changing the convergence of light rays, as in… …  

• lens — n. 1 a piece of a transparent substance with one or (usu.) both sides curved for concentrating or dispersing light rays esp. in optical instruments. 2 a combination of lenses used in photography. 3 Anat. = crystalline lens. 4 Physics a device for …   Useful english dictionary

• Lens — n. 1 a piece of a transparent substance with one or (usu.) both sides curved for concentrating or dispersing light rays esp. in optical instruments. 2 a combination of lenses used in photography. 3 Anat. = crystalline lens. 4 Physics a device for …   Useful english dictionary

• Secondary lens — Primary lens redirects here. See also prime lens. In photography, a secondary lens is a lens designed to be used in conjunction with another lens, called the primary lens.A secondary lens may be designed to be used either in front of the primary… …   Wikipedia