Lens-shaped
11lens — /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… …
12lens — [17] The Latin word for a ‘lentil’ was lēns; and when 17th century scientists wanted a term for a round biconvex (lentil shaped) piece of glass, they needed to look no further than lens. English lentil [13] itself comes via Old French from Latin… …
13lens — 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 …
14lens — n. 1) (in anatomy) the transparent crystalline structure situated behind the pupil of the eye and enclosed in a thin transparent capsule. It helps to refract incoming light and focus it onto the retina. See also: accommodation 2) (in optics) a… …
15freshwater lens — 1. Body of fresh ground water found typically beneath permeable limestone islands or peninsular land masses in the tropics. The lens shaped water body is bounded above by a water table and below by a mixing zone between fresh and saline ground …
16Contact lens — Contacts redirects here. For the software application, see Address book. A pair of contact lenses, positioned with the concave side facing upward …
17Explosive lens — An explosive lens as used, for example, in nuclear weapons is a highly specialized explosive charge. In general, it is a device composed of several explosive charges that are shaped in such a way as to change the shape of the detonation wave… …
18History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… …
19Fresnel lens — A Fresnel lens (pronounced [ frɛz.nəl] or [freɪ nɛl] ) is a type of lens invented by French physicist Augustin Jean Fresnel. Originally developed for lighthouses, the design enables the construction of lenses of large aperture and short focal… …
20Telecentric lens — A telecentric lens is a compound lens which has its entrance or exit pupil at infinity; in the prior case, this produces an orthographic view of the subject. This means that the chief rays (oblique rays which pass through the center of the… …
