LENSES - definition. What is LENSES
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%ما هو (من)٪ 1 - تعريف

OPTICAL DEVICE WHICH TRANSMITS AND REFRACTS LIGHT
Convex lens; Concave lens; Lenses; Optical lens; Thin Lens Formula; Thin lens formula; Lens maker's formula; Lens Maker's Formula; Lens formula; Lens Formula; Diverging lens; Lens maker equation; Lensmaker's equation; Lens maker's equation; Lens makers equation; Converging lens; Biconvex lens; Biconcave lens; Convex Lens; Meniscus lens; Crystal Lens; Curved lens; Spherical lens; Convex lenses; Compound lens; Lensmaker's formula; Lensmakers' equation; Lensmakers' forumula; Lensmakers forumula; Lensmakers equation; Lensmaker equation; Lensmaker formula; Plano-convex lens; Double convex lens; Plano-concave lens; Convex-concave lens; Negative lens; Equiconvex lens; Real-is-positive convention; Lens equation; Biconcave; Planoconcave; Plus lens; Convexo-concave lens; Minus lens; Conventional lens; LENS; Singlet (lens); Double-convex lens; Double concave lens; Double-concave lens; Bi-convex lens; Bi-concave lens; Double-convex converging lens; Double convex converging lens; Biconvex converging lens; Bi-convex converging lens; Double-concave diverging lens; Biconcave diverging lens; Bi-concave diverging lens; Double concave diverging lens; Meniscus (optics); Positive lens; Plano-concave; Planoconvex lens; Lens (optics); Optical lenses
  • A biconvex lens
  • 400px
  • Close-up view of a flat [[Fresnel lens]].
  • LSST]], a planned sky surveying telescope
  • 250px
  • 400px
  • Lenses can be used to focus light
  • Types of lenses
  • Meniscus lenses: negative (top) and positive (bottom)
  • Light being refracted by a spherical glass container full of water. [[Roger Bacon]], 13th century
  • An aspheric biconvex lens.
  • The position of the focus of a spherical lens depends on the radii of curvature of the two facets.
  • A watch with a plano-convex lens over the date indicator
  • Images of black letters in a thin convex lens of focal length ''f'' are shown in red. Selected rays are shown for letters '''E''', '''I''' and '''K''' in blue, green and orange, respectively. '''E''' (at 2''f'') has an equal-size, real and inverted image; '''I''' (at ''f'') has its image at [[infinity]]; and '''K''' (at ''f''/2) has a double-size, virtual and upright image.

Lenses         
·pl of Lens.
Contarex lenses         
  • 2}}; note bayonet lugs are on the body instead of the lens
  • 1.4}}]]
  • 2}}
  • 2.8}} inside front of lens info
Carl Zeiss lenses for Contarex
Draft:Contarex Lenses (Zeiss Ikon; Contarex Lenses
Contarex lenses are a series of photographic camera lenses used by the Contarex camera. They use the Contarex bayonet lens mount.
Photochromic lens         
OPTICAL LENSES THAT DARKEN ON EXPOSURE TO CERTAIN WAVELENGTHS OF LIGHT
Photochromatic glass; Photochromic Lenses; Photochromic lenses; Transitions lens; Photochromic glass; Photochromatic lens; Transition lenses; Transition lens; Self-tinting lenses; Photochromic sunglasses; Photochromic glasses
A photochromic lens is an optical lens that darkens on exposure to light of sufficiently high frequency, most commonly ultraviolet (UV) radiation. In the absence of activating light, the lenses return to their clear state.

ويكيبيديا

Lens

A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis. Lenses are made from materials such as glass or plastic and are ground, polished, or molded to the required shape. A lens can focus light to form an image, unlike a prism, which refracts light without focusing. Devices that similarly focus or disperse waves and radiation other than visible light are also called "lenses", such as microwave lenses, electron lenses, acoustic lenses, or explosive lenses.

Lenses are used in various imaging devices like telescopes, binoculars, and cameras. They are also used as visual aids in glasses to correct defects of vision such as myopia and hypermetropia.

أمثلة من مجموعة نصية لـ٪ 1
1. This can be set to apply only to certain lenses, or all lenses.
2. Lenses: Like all of Pentax‘s current dSLRs, the K20D accepts the company‘s K–mount lenses.
3. This style is available in petrol blue with matching lenses, lilac ruthenium with lilac lenses, blue ruthenium with dark blue lenses, black ruthenium with grey lenses, grey–green ruthenium with matching lenses, and white ruthenium with grey or black mirror lenses.
4. Great looking lenses Varilux lenses are now available with all types of frames, even rimless and fashionable shallow frames.
5. An estimated 30 million Americans wear soft contact lenses.