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Что (кто) такое contact filter - определение
WIKIMEDIA DISAMBIGUATION PAGE
Contact (Motion Picture); Contact (movie); Contact! (album); Contact (song); Contact us; Contact (album); Contact (disambiguation); Contact film; Contact (game); Cotanct; Contact (film); Contact (1997 film); The Contact (film); The Contact; The Contact (disambiguation); Contact!
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Photographic filter
![The 80A filter, mainly used to correct for the excessive redness of [[tungsten]] lighting, can also be used to oversaturate scenes that already have blue. The photo on the left was shot with a polarizer, while the one on the right was shot with a polarizer and an 80A filter.](https://commons.wikimedia.org/wiki/Special:FilePath/80a comparison.jpg?width=200 "The 80A filter, mainly used to correct for the excessive redness of [[tungsten]] lighting, can also be used to oversaturate scenes that already have blue. The photo on the left was shot with a polarizer, while the one on the right was shot with a polarizer and an 80A filter.")
![The ''LOMO effect'' imitates photos made with a low-cost Russian camera brand, named "LOMO". It is approximated by saturated central colors, blurred periphery, and darkened corners and edges ([[vignetting]]).}} effect.](https://commons.wikimedia.org/wiki/Special:FilePath/Verblühende Sauerkirsche.jpg?width=200 "The ''LOMO effect'' imitates photos made with a low-cost Russian camera brand, named \"LOMO\". It is approximated by saturated central colors, blurred periphery, and darkened corners and edges ([[vignetting]]).}} effect.")
CAMERA ACCESSORY CONSISTING OF AN OPTICAL FILTER
Daylight filter; Filter (photography); Lens filter; Filter ring; Filter mount; Filter thread; Cross screen filter; Photographic filters; Red Black and White filter; Camera filter; Series filter
In photography and cinematography, a filter is a camera accessory consisting of an optical filter that can be inserted into the optical path. The filter can be of a square or oblong shape and mounted in a holder accessory, or, more commonly, a glass or plastic disk in a metal or plastic ring frame, which can be screwed into the front of or clipped onto the camera lens.
Elliptic filter
.svg?width=200 "The frequency response of a fourth-order elliptic low-pass filter with '''ε''' = 0.5 and '''ξ''' = 1.05. Also shown are the minimum gain in the passband and the maximum gain in the stopband, and the transition region between normalized frequency 1 and '''ξ'''")
.svg?width=200 "A closeup of the transition region of the above plot.")
![Log of the absolute value of the gain of an 8th order elliptic filter in [[complex frequency space]] (s = σ + jω) with ε = 0.5, ξ = 1.05 and ω<sub>0</sub> = 1. The white spots are poles and the black spots are zeroes. There are a total of 16 poles and 8 double zeroes. What appears to be a single pole and zero near the transition region is actually four poles and two double zeroes as shown in the expanded view below. In this image, black corresponds to a gain of 0.0001 or less and white corresponds to a gain of 10 or more.](https://commons.wikimedia.org/wiki/Special:FilePath/Elliptic Filter s-Plane Response (8th Order).svg?width=200 "Log of the absolute value of the gain of an 8th order elliptic filter in [[complex frequency space]] (s = σ + jω) with ε = 0.5, ξ = 1.05 and ω<sub>0</sub> = 1. The white spots are poles and the black spots are zeroes. There are a total of 16 poles and 8 double zeroes. What appears to be a single pole and zero near the transition region is actually four poles and two double zeroes as shown in the expanded view below. In this image, black corresponds to a gain of 0.0001 or less and white corresponds to a gain of 10 or more.")
.svg?width=200 "An expanded view in the transition region of the above image, resolving the four poles and two double zeroes.")
SIGNAL PROCESSING FILTER
Cauer filter; Elliptical filter; Equiripple filter; Eliptic filter
An elliptic filter (also known as a Cauer filter, named after Wilhelm Cauer, or as a Zolotarev filter, after Yegor Zolotarev) is a signal processing filter with equalized ripple (equiripple) behavior in both the passband and the stopband. The amount of ripple in each band is independently adjustable, and no other filter of equal order can have a faster transition in gain between the passband and the stopband, for the given values of ripple (whether the ripple is equalized or not).
Electronic filter
![A low-pass electronic filter realised by an [[RC circuit]]](https://commons.wikimedia.org/wiki/Special:FilePath/1st Order Lowpass Filter RC.svg?width=200 "A low-pass electronic filter realised by an [[RC circuit]]")
ELECTRONIC CIRCUIT THAT REMOVES UNWANTED COMPONENTS FROM THE SIGNAL, OR ENHANCES WANTED ONES, OR BOTH
Electronic filters; Filter (circuits); Pi filter; Pi Filter; Frequency filter; BAW filter
Electronic filters are a type of signal processing filter in the form of electrical circuits. This article covers those filters consisting of lumped electronic components, as opposed to distributed-element filters.
Optical filter
![Coloured and [[neutral-density filter]]s](https://commons.wikimedia.org/wiki/Special:FilePath/Filter-optics-1.jpg?width=200 "Coloured and [[neutral-density filter]]s")
DEVICE THAT SELECTIVELY TRANSMITS LIGHT OF CERTAIN WAVELENGTHS
Optic filter; Wedge filter; Glass filter; Optical Filters; Optical band-pass filter; Optical bandpass filter; Filter (optics); Light filter
An optical filter is a device that selectively transmits light of different wavelengths, usually implemented as a glass plane or plastic device in the optical path, which are either dyed in the bulk or have interference coatings. The optical properties of filters are completely described by their frequency response, which specifies how the magnitude and phase of each frequency component of an incoming signal is modified by the filter.
contact lens
![In 1888, [[Adolf Gaston Eugen Fick]] was the first to successfully fit contact lenses, which were made from blown glass](https://commons.wikimedia.org/wiki/Special:FilePath/Adolf Fick-adjust.png?width=200 "In 1888, [[Adolf Gaston Eugen Fick]] was the first to successfully fit contact lenses, which were made from blown glass")
![One-day [[disposable]] contact lenses with blue handling tint in blister-pack packaging](https://commons.wikimedia.org/wiki/Special:FilePath/ColorContactLens.JPG?width=200 "One-day [[disposable]] contact lenses with blue handling tint in blister-pack packaging")
![Leonardo's]] method for neutralizing the refractive power of the cornea](https://commons.wikimedia.org/wiki/Special:FilePath/Davinci.jpg?width=200 "Leonardo's]] method for neutralizing the refractive power of the cornea")
![Dracula]]'' (1958) in one of the first uses of contact lens with makeup in films](https://commons.wikimedia.org/wiki/Special:FilePath/Dracula 1958 c.jpg?width=200 "Dracula]]'' (1958) in one of the first uses of contact lens with makeup in films")
![[[Otto Wichterle]] (pictured) and [[Drahoslav Lím]] introduced modern soft hydrogel lenses in 1959.](https://commons.wikimedia.org/wiki/Special:FilePath/Prof. Ing. RTDr. Otto Wichterle.jpg?width=200 "[[Otto Wichterle]] (pictured) and [[Drahoslav Lím]] introduced modern soft hydrogel lenses in 1959.")
VERY THIN PLASTIC LENS WORN DIRECTLY ON THE EYE TO CORRECT VISUAL DEFECTS
Contact lenses; Contact lense; Contact Lenses; Contact Lens; Contact lens solution; Thoric lens; Contacts; Contact lens prescription; Corneal neutralization; Colored contact lens; Colored contact lenses; Piggybacked contact lens; RGP contact lenses; Monovision; Disposable contact lens lid; Corneal Neutralization; Multifocal contact lens; Soft contact lens; Bandage contact lens; Decorative contact lens; History of contact lenses; Soft contact lenses; Contact lens solutions
(contact lenses)
Contact lenses are small plastic lenses that you put on the surface of your eyes to help you see better, instead of wearing glasses.
N-COUNT: usu pl
Contact lens
VERY THIN PLASTIC LENS WORN DIRECTLY ON THE EYE TO CORRECT VISUAL DEFECTS
Contact lenses; Contact lense; Contact Lenses; Contact Lens; Contact lens solution; Thoric lens; Contacts; Contact lens prescription; Corneal neutralization; Colored contact lens; Colored contact lenses; Piggybacked contact lens; RGP contact lenses; Monovision; Disposable contact lens lid; Corneal Neutralization; Multifocal contact lens; Soft contact lens; Bandage contact lens; Decorative contact lens; History of contact lenses; Soft contact lenses; Contact lens solutions
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 150 million people worldwide, and they can be worn to correct vision or for cosmetic or therapeutic reasons.
contact lens
VERY THIN PLASTIC LENS WORN DIRECTLY ON THE EYE TO CORRECT VISUAL DEFECTS
Contact lenses; Contact lense; Contact Lenses; Contact Lens; Contact lens solution; Thoric lens; Contacts; Contact lens prescription; Corneal neutralization; Colored contact lens; Colored contact lenses; Piggybacked contact lens; RGP contact lenses; Monovision; Disposable contact lens lid; Corneal Neutralization; Multifocal contact lens; Soft contact lens; Bandage contact lens; Decorative contact lens; History of contact lenses; Soft contact lenses; Contact lens solutions
¦ noun a thin plastic lens placed directly on the surface of the eye to correct visual defects.
contacts
VERY THIN PLASTIC LENS WORN DIRECTLY ON THE EYE TO CORRECT VISUAL DEFECTS
Contact lenses; Contact lense; Contact Lenses; Contact Lens; Contact lens solution; Thoric lens; Contacts; Contact lens prescription; Corneal neutralization; Colored contact lens; Colored contact lenses; Piggybacked contact lens; RGP contact lenses; Monovision; Disposable contact lens lid; Corneal Neutralization; Multifocal contact lens; Soft contact lens; Bandage contact lens; Decorative contact lens; History of contact lenses; Soft contact lenses; Contact lens solutions
contact lenses.
Air filter
DEVICE COMPOSED OF FIBROUS MATERIALS WHICH REMOVES SOLID PARTICULATES FROM THE AIR
Filter (air); Air cleaner; Air filtration; Air filters; Universal air filter; Cabin air filter; Dust filter; Air Filters
A particulate air filter is a device composed of fibrous, or porous materials which removes solid particulates such as dust, pollen, mold, and bacteria from the air. Filters containing an adsorbent or catalyst such as charcoal (carbon) may also remove odors and gaseous pollutants such as volatile organic compounds or ozone.
Contact print
![''Namaka'', contact sheet photograph combined with [[intentional camera movement]]](https://commons.wikimedia.org/wiki/Special:FilePath/Namaka - Contact sheet art photography.jpg?width=200 "''Namaka'', contact sheet photograph combined with [[intentional camera movement]]")
![Contact print of a photo film cut in pieces, used for reviewing and selecting images for the final print. Photo by [[Paolo Monti]], 1975.](https://commons.wikimedia.org/wiki/Special:FilePath/Paolo Monti - Serie fotografica (Livigno, 1975) - BEIC 6359945.jpg?width=200 "Contact print of a photo film cut in pieces, used for reviewing and selecting images for the final print. Photo by [[Paolo Monti]], 1975.")
PHOTOGRAPHIC IMAGE PRODUCED FROM FILM
Contact printing; Contact sheet
A contact print is a photographic image produced from film; sometimes from a film negative, and sometimes from a film positive or paper negative. In a darkroom an exposed and developed piece of film or photographic paper is placed emulsion side down, in contact with a piece of photographic paper, light is briefly shone through the negative or paper and then the paper is developed to reveal the final print.
