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See searches and references containing OPTICAL FILTER!OPTICAL FILTER
Filters which selectively transmit specific colors
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_filter
Wavelength-selective optical filter
An interference filter, dichroic filter, or thin-film filter is an optical filter that reflects some wavelengths (colors) of light and transmits others
Interference_filter
Camera accessory consisting of an optical filter
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
Photographic_filter
Topics referred to by the same term
Look up Filter, filter, filtering, or filters in Wiktionary, the free dictionary. Filter, filtering, filters or filtration may also refer to: Filter (higher-order
Filter
Mathematical transformation reducing the damage caused by aliasing
case of optical image sampling, as by image sensors in digital cameras, the anti-aliasing filter is also known as an optical low-pass filter (OLPF), blur
Anti-aliasing_filter
Filter that rejects signals inside a certain range
inverse of a band-pass filter. A notch filter is a band-stop filter with a narrow stopband (high Q factor). Narrow notch filters (optical) are used in Raman
Band-stop_filter
Device in optics that reduces light intensity
In photography and optics, a neutral-density filter, or ND filter, is a filter that reduces or modifies the intensity of all wavelengths, or colors, of
Neutral-density_filter
Type of electronic circuit or optical filter
also be used in conjunction with a low-pass filter to produce a band-pass filter. In the optical domain filters are often characterised by wavelength rather
High-pass_filter
A liquid crystal tunable filter (LCTF) is an optical filter that uses electronically controlled liquid crystal (LC) elements to transmit a selectable wavelength
Liquid_crystal_tunable_filter
Telescope accessory used to improve details of viewed objects
An astronomical filter is a telescope accessory consisting of an optical filter used by amateur astronomers to improve the details and contrast of celestial
Astronomical_filter
Set of waveguides including a closed loop
coupled to each other to form an add/drop optical filter or to send light in a preferred direction. Optical ring resonators work on the principles behind
Optical_ring_resonators
Optical filter used for identifying coloured stones
In gemmology, a Chelsea filter is a dichromatic optical filter used for identifying coloured stones. The "chelsea" filter was originally devised by Anderson
Chelsea_filter
Optical filter device
an optical filter that lets light waves of a specific polarization pass through while blocking light waves of other polarizations. It can filter a beam
Polarizer
Infrared optical filter
Metal-mesh optical filters are optical filters made from stacks of metal meshes and dielectric. They are used as part of an optical path to filter the incoming
Metal-mesh_optical_filter
Deep-red spectral line of hydrogen
H-alpha filter is an optical filter designed to transmit a narrow bandwidth of light generally centred on the H-alpha wavelength. These filters can be
Hydrogen-alpha
Optical fiber instrument
Fiber-optic filter is an optical fiber instrument used for wavelength selection, which can select desired wavelengths to pass and reject the others. It
Fiber-optic_filter
Astronomical spectral light processor
Bernard Lyot, is a type of optical filter that uses birefringence to produce a narrow passband of transmitted wavelengths. Lyot filters are used in astronomy
Lyot_filter
Optical band-pass filter used in the physical sciences
An atomic line filter (ALF) is a more effective optical band-pass filter used in the physical sciences for filtering electromagnetic radiation with precision
Atomic_line_filter
Special glass type used for optical systems
Optical glass refers to a quality of glass suitable for the manufacture of optical systems such as optical lenses, prisms or mirrors. Unlike window glass
Optical_glass
Device for suppressing part of a signal
the rise of optical fiber technology, however, optical filters increasingly find signal processing applications and signal processing filter terminology
Filter_(signal_processing)
neutral-density filter, also known as a graduated ND filter, split neutral-density filter, or just a graduated filter, is an optical filter that has a variable
Graduated neutral-density filter
Graduated_neutral-density_filter
Spectroscopic sensor
without an optical filter. The main components of an NDIR sensor are an infrared (IR) source (lamp), a sample chamber or light tube, a light filter and an
Nondispersive_infrared_sensor
Device that approximates natural sunlight
Simulator The spectral output of a xenon arc lamp, after passing through an optical filter to achieve better spectral match to AM1.5G Esen, Vedat; Sağlam, Şafak;
Solar_simulator
Optical filters that block near-infrared while passing visible light
convention of optical filters where the name of the filter denotes the wavelengths that are blocked, and in line with the convention for air filters and oil
Infrared_cut-off_filter
Technology used to provide broadband to the end consumer via fiber
whom the signal is not intended). It is therefore up to the optical network terminal to filter out any signals intended for other customers. In addition
Passive_optical_network
2015 full-frame digital single-lens reflex camera
sensor of the "R" version includes an optical filter that cancels out the effects of a standard optical low-pass filter. This distinction is roughly similar
Canon_EOS_5DS
Material that scatters light in optics
In optics, a diffuser (also called a light diffuser or optical diffuser) is any material that diffuses or scatters light in some manner to transmit soft
Diffuser_(optics)
Logarithm of ratio of incident to transmitted radiant power through a sample
absorptivity of the attenuating species; ℓ {\displaystyle \ell } is the optical path length; and c {\displaystyle c} is the concentration of the attenuating
Absorbance
Characteristic of an optical system
The optical transfer function (OTF) of an optical system such as a camera, microscope, human eye, or projector is a scale-dependent description of their
Optical_transfer_function
Camera parts, features and technologies
cinematographers still use UV filters to protect their lenses' glass and coating. However, UV filters, as with any optical filter, may introduce lens flare
UV_filter
Material which alters light reflection or transmission on optics
another range, allowing the production of dichroic thin-film filters. The simplest optical coatings are thin layers of metals, such as aluminium, which
Optical_coating
Type of signal filter
filter depends on the filter design. The filter is sometimes called a high-cut filter, or treble-cut filter in audio applications. A low-pass filter is
Low-pass_filter
British electronics company
traditional touch sensing techniques, such as optical, acoustic, capacitive, infra-red or resistive screens. Optical filters are used to enhance the readability
Zytronic
Optical filter in fluorescence microscopy
An excitation filter is a high quality optical-glass filter commonly used in fluorescence microscopy and spectroscopic applications for selection of the
Excitation_filter
Type of distributed Bragg reflector constructed in a short segment of optical fiber
dielectric mirror. Hence a fiber Bragg grating can be used as an inline optical filter to block certain wavelengths, can be used for sensing applications,
Fiber_Bragg_grating
Pattern of color filters over an image sensor
optical properties, and optimal manufacturing processes of color filter arrays. For instance, Nakamura said that materials for on-chip color filter arrays
Color_filter_array
Filter that rejects signals outside a certain range
a band-pass filter is a computer algorithm that performs the same function. The term band-pass filter is also used for optical filters, sheets of colored
Band-pass_filter
indices match. A Christiansen filter is a narrow bandpass or monochromatic optical filter which consists of an optical cell which is stuffed with a crushed
Christiansen_effect
Branch of optics
headlights, and for high precision optical filters and mirrors. Another application of these coatings is spatial filtering. The blue wing patches of the Aglais
Thin-film_optics
Labeling system for optical filters
for optical filters, usually for photographic use comprising a number sometimes followed by a letter. The number denotes the color of the filter and its
Wratten_number
Topics referred to by the same term
Framework, integration framework for ALM tools Atomic line filter, an advanced optical filter ALF, vehicle license plate prefix for Hildesheim (district)
ALF
Optical network component
and beam-steering switches in planar waveguide circuits, and tunable optical filter technology. MEMS and liquid crystal technologies are the most widely
Reconfigurable optical add-drop multiplexer
Reconfigurable_optical_add-drop_multiplexer
Optical filter glass
Wood's glass is an optical filter glass invented in 1903 by American physicist Robert Williams Wood (1868–1955), which allows ultraviolet and infrared
Wood's_glass
Lens filter for cameras
A polarizing filter or polarising filter (see spelling differences) is a filter that is often placed in front of a camera lens in photography in order
Polarizing filter (photography)
Polarizing_filter_(photography)
Liquid that is attracted by poles of a magnet
Earth-based astronomical telescopes. Optical filters are used to select different wavelengths of light. The replacement of filters is cumbersome, especially when
Ferrofluid
Dielectric mirror that selectively reflects a particular wavelength range of light
A rugate filter, also known as a gradient-index filter, is an optical filter based on a dielectric mirror that selectively reflects specific wavelength
Rugate_filter
Optical device with parallel mirrors
layers on an optical surface by vapor deposition. These optical filters usually have more exact reflective and pass bands than absorptive filters. When properly
Fabry–Pérot_interferometer
Study of interactions between sound and light
the optical wave can be diffracted acousto-optically. There are two major types of the acousto-optic filters, the collinear and non-collinear filters. The
Acousto-optics
Yellow color filter sometimes applied in films to depict Mexican locations
The Mexican filter, or Mexico filter, is a yellow-colored or sepia filter or overly warm color grade that is sometimes employed in films and television
Mexican_filter
Optical filter
field. In this sense, an FSS is a type of optical filter or metal-mesh optical filter in which the filtering is accomplished by virtue of the regular,
Frequency_selective_surface
Deep blue glass coloured with cobalt
noticeable amount of colour. Cobalt glass plates are used as an optical filter in flame tests to filter out the undesired strong yellow light emitted by traces
Cobalt_glass
Eyeglasses marketed to color-blind people
users. EnChroma lenses are composed primarily of an optical notch filter that selectively filters wavelengths of light in the part of the spectrum where
EnChroma
French manufacturer of optical filters for photography
French manufacturer of optical filters for photography. The system allows filters such as rectangular graduated neutral density filters which are versatile
Cokin
Blue pigment
Mountains of Saxony. Cobalt glass is used decoratively, and also as an optical filter to remove or hide certain visible colors. Art Cobalt blue was the primary
Cobalt_blue
Filters for an optical system
(or optical filters), with a known sensitivity to incident radiation. The sensitivity usually depends on the optical system, detectors and filters used
Photometric_system
Manipulates DWDM channel contents
division multiplexing (DWDM) used for long-haul communications. The main optical filtering technology used in add-drop multiplexers is the Fabry–Pérot etalon
Add-drop_multiplexer
Type of fluorometer in fluorescence spectroscopy
compound to be measured. Filter fluorometers produce specific excitation and emission wavelengths by using optical filters. The filter blocks other wavelengths
Filter_fluorometer
Lab technique in biology and chemistry
fluorophores may cause overlap. To add specificity, optical filters and dichroic mirrors are used to filter and move light to the detectors such as photomultiplier
Flow_cytometry
Multiplicative amount of light a photography filter blocks
photography, filter factor refers to the multiplicative amount of light a filter blocks. The table below illustrates the relationship between filter factor
Filter_factor
Effectiveness of a material in transmitting radiant energy
luminous transmittance of a filter is a measure of the amount of luminous flux or intensity transmitted by an optical filter. It is generally defined in
Transmittance
Optical phenomenon
commercial applications including anti-reflection coatings, mirrors, and optical filters. In optics, a thin film is a layer of material with thickness in the
Thin-film_interference
Heat and light produced during an electrical arc fault
significantly be reduced by protection based on detection of arc-flash light. Optical detection is often combined with overcurrent information. Light and current
Arc_flash
Wide-band photometric system used in astronomy
magnitudes respectively. The system is defined using a set of color optical filters in combination with an RMA 1P21 photomultiplier tube. The choice of
UBV_photometric_system
Law of wavelength-specific emission and absorption
reflective to any wavelength, to be brought into connection, through an optical filter, with the blackbody enclosure, both at the same temperature. Radiation
Kirchhoff's law of thermal radiation
Kirchhoff's_law_of_thermal_radiation
Surface with certain thermo-radiative properties
In solar thermal collectors, a selective surface or selective absorber is a means of increasing its operation temperature and/or efficiency. The selectivity
Selective_surface
Quantum explanation of electromagnetic polarization
wavelength. A linear filter transmits one component of a plane wave and absorbs the perpendicular component. In that case, if the filter is polarized in the
Photon_polarization
Aiming device, usually for firearms
diameter apertures) to increase the depth of field and reduce reflections. Optical filter systems to increase the contrast sensitivity for the aiming eye. Semi-transparent
Diopter_sight
Canadian manufacturer of scientific instruments
etc. is a Canadian manufacturer of infrared cameras, widely tunable optical filters, hyperspectral imaging and spectroscopic scientific instruments for
Photon_etc.
Template for electronic filter design
applied to any kind of linear filter or signal processing, including mechanical, acoustic and optical filters. Filters are required to operate at many
Prototype_filter
Instrument on the Swift satellite
filters or grisms. The seven filters, which are similar to those on the XMM-Newton Optical Monitor instrument, cover the near-ultraviolet and optical
Ultraviolet/Optical_Telescope
Measure the amount of a target entity
arrangements and noise reduction or filtering arrangements. These may simply be in the form of a narrow band-pass optical filter, or a blocking reagent in a binding
Assay
Mirror made of dielectric materials
Bragg reflector – Structure used in waveguides Dichroic filter – Wavelength-selective optical filterPages displaying short descriptions of redirect targets
Dielectric_mirror
Digital movie camera
dimensions: 197mm x 117mm x 349mm Optical filters: f1.4 prism system; first filter wheel clear, 2-stop, 4-stop, 6-stop ND; second filter wheel clear, 4-point star
Thomson Viper FilmStream Camera
Thomson_Viper_FilmStream_Camera
Interferometric technique
formed by a Mach-Zehnder interferometer which acts as an optical filter. The shape of the filter transfer function has a perfectly sinusoidal pattern by
Self-mixing_interferometry
Sufficiency theorem for reconstructing signals from samples
anti-aliasing filter (optical low-pass filter) may be included in a camera system to reduce the MTF of the optical image. Instead of requiring an optical filter, the
Nyquist–Shannon sampling theorem
Nyquist–Shannon_sampling_theorem
Measurement method using interference of waves
narrow band optical filters and as the core hardware component of Fourier transform spectrometers. When used as a tunable narrow band filter, Michelson
Interferometry
Synthesized biomolecular magnetic particles
particle imaging, data storage, environmental remediation, nanofluids, optical filters, defect sensor, magnetic cooling and cation sensors. The physical and
Magnetic_nanoparticles
Light fixture that emits long-wave ultraviolet light and very little visible light
visible light. One type of lamp has a violet filter material, either on the bulb or in a separate glass filter in the lamp housing, which blocks most visible
Blacklight
Nonlinear optical process
harmonic, but this light can nevertheless be detected with the help of optical filters. Second-harmonic generation was first demonstrated by Peter Franken
Second-harmonic_generation
Submarine communication
reality. A recently demonstrated laser will be matched with a special optical filter to form the core of a communications system with a signal-to-noise ratio
Communication_with_submarines
Type of wall art
blacklight technology began with the development of Wood's glass, an optical filter glass that allows only UV and infrared light to pass through. In 1932
Blacklight_poster
NASA infrared space telescope
detectors from Teledyne Technologies Optical Telescope Assembly The filters on the Coronagraph Instrument's Color Filter Assembly The focal plane mask for
Nancy Grace Roman Space Telescope
Nancy_Grace_Roman_Space_Telescope
Electronic device
Photodetector receives light through the optical system consisting of the mirror wheel and an optical filter. The reflected light, rapidly varying in
Barcode_reader
Material used to color light or correct color
A color gel or color filter (Commonwealth spelling: colour gel or colour filter), also known as lighting gel or simply gel, is a transparent colored material
Color_gel
light Absorption Lenses Prisms Mirrors Transparent materials (e.g. optical filters) Translucent materials (e.g. frosted glass) Opaque materials Bass,
Optical_path
different methods to resolve this problem. RCA, in their TK-42, placed an optical filter in front of the luminance tube which transmitted light according to
Four-tube_television_camera
Optical device which splits a beam of light in two
beamsplitter is an optical device that splits a beam of light into a transmitted and a reflected beam. It is a crucial part of many optical experimental and
Beam_splitter
Star-forming galaxies at high redshift
used to select galaxies at redshifts of z = 3–4 using ultraviolet and optical filters, but progress in ultraviolet astronomy and in infrared astronomy has
Lyman-break_galaxy
input signal which is multiplied by some filter in the Fourier domain. An example filter is the matched filter which uses the cross correlation of the
Optical_correlator
American optical engineer
at Texas A&M University. Her research interests include optical filters, photonics, optical communication using wavelength-division multiplexing, and
Christi_Madsen
Visually perceived images that differ from objective reality
In visual perception, an optical illusion (also called a visual illusion) is an illusion caused by the visual system and characterized by a visual percept
Optical_illusion
Imaging of astronomical objects
accumulate and sum photons over long periods of time or using specialized optical filters which limit the photons to a certain wavelength. Photography using
Astrophotography
Materials engineered to have properties that have not yet been found in nature
applications of metamaterials are diverse and include sports equipment, optical filters, medical devices, remote aerospace applications, sensor detection and
Metamaterial
Appearance of the sky in a clear night
light pollution has been a growing problem for viewing the night sky. Optical filters and modifications to light fixtures can help to alleviate this problem
Night_sky
Optical device
A spatial filter is an optical device which uses the principles of Fourier optics to alter the structure of a beam of light or other electromagnetic radiation
Spatial_filter
Color filter array
A Bayer filter mosaic is a color filter array (CFA) for arranging RGB color filters on a square grid of photosensors. Its particular arrangement of color
Bayer_filter
Means of communication using light
mux/demux, filter, or prism. These can include Optical Add/Drop Multiplexer (OADM) and Reconfigurable Optical Add/Drop Multiplexer (ROADM). Optical switch
Optical_networking
Topics referred to by the same term
Network filter may refer to: Firewall (computing), especially a packet filter, to control inbound and outbound network traffic at the device or local-area-network
Network_filter
Hubble Telescope instrument
wheel which moves different optical filters into the lightpath (between the WFPC2's aperture and the CCD detectors). The 48 filter elements included: A set
Wide Field and Planetary Camera 2
Wide_Field_and_Planetary_Camera_2
Non-lethal temporary blindness weapon
of them as well. One defense against laser dazzlers are narrowband optical filters tuned to the frequency of the laser. To counter such defence, dazzlers
Dazzler_(weapon)
OPTICAL FILTER
OPTICAL FILTER
OPTICAL FILTER
Girl/Female
Tamil
A decree, Command
Male
Celtic
, votary of Minos.
Boy/Male
Tamil
Kalidas | காலிதாஸ
Great poet, Dramatist, Slave of Goddess Kali
Female
English
Pet form of English Jennifer, JENAE means "white and smooth."
Surname or Lastname
English
English : variant spelling of Vickery.
Female
Ukrainian
, God's glory.
Girl/Female
Afghan, Arabic, Indian, Kannada, Muslim, Tamil
God-inspired Peace of Mind; Tranquillity; Devout
Surname or Lastname
English and Scottish
English and Scottish : topographic or habitational name for residence on or near land covered with ash trees. There are minor places called Ashland(s) in Hampshire and Leicestershire, Staffordshire, and Galloway. Asland, a river name in Lancashire, refers to the lower reaches of what is more generally known as the Douglas river. It is named from Old Norse askr ‘ash’ + Old English lanu ‘lane’.Americanized form of Norwegian Ask(e)land (see Askeland).Probably an Americanized form of the common French Canadian name Asselin. Compare Ashline.In the U.S., Ashland is the name of two counties and at least thirteen cities, towns, and villages. Most, perhaps all, were named after Ashland in Lexington, KY, home of Henry Clay (1777–1852), who is said to have named his estate from a characteristic feature of the site, not from anyone’s surname.
Boy/Male
Australian, Hindu, Indian, Marathi, Telugu
Smile; Lord Shiva
Girl/Female
Arabic, Muslim
Most Noble; Gentle; Urbane
OPTICAL FILTER
OPTICAL FILTER
OPTICAL FILTER
OPTICAL FILTER
OPTICAL FILTER
a.
Alt. of Optical
a.
Topical.
a.
Of or pertaining to a vortex or vortexes; resembling a vortex in form or motion; whirling; as, a vortical motion.
n.
An optical toy similar to the phenakistoscope. See Phenakistoscope.
n.
The space covered by an optical instrument at one view.
n.
Of or pertaining to the science of vision; optical.
a.
Relating to the science of optics; as, optical works.
a.
Of or pertaining to the eye; ocular; as, the optic nerves (the first pair of cranial nerves) which are distributed to the retina. See Illust. of Brain, and Eye.
n.
An optical glass; a telescope.
a.
Expressed in metrical form; exhibiting the imaginative or the rhythmical quality of poetry; as, a poetical composition; poetical prose.
n.
A reflecting optical glass or instrument; a mirror.
n.
Of or pertaining to a place; limited; logical application; as, a topical remedy; a topical claim or privilege.
n.
An optical glass that is convex on both sides.
adv.
By optics or sight; with reference to optics.
a.
Involving an option; depending on the exercise of an option; left to one's discretion or choice; not compulsory; as, optional studies; it is optional with you to go or stay.
a.
One who deals in optical glasses and instruments.
a.
Belonging to, or consisting of, bark or rind; resembling bark or rind; external; outer; superficial; as, the cortical substance of the kidney.
n.
An instrument for showing the optical effects of color.
a.
One skilled in optics.
a.
Of or pertaining to vision or sight.