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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
Deep-red spectral line of hydrogen
surfaces), but the implementation is different (a dichroic interference filter relies on the interference of internal reflections while the etalon has a relatively
Hydrogen-alpha
Filters which selectively transmit specific colors
path, which are either dyed in the bulk or have interference coatings. The optical properties of filters are completely described by their frequency response
Optical_filter
Method of representing images in 3D
which filter out the very specific wavelengths allow the wearer to see a full color 3D image. Special interference filters (dichromatic filters) in the
Anaglyph_3D
Disturbance in an electrical circuit due to external sources of radio waves
Electromagnetic interference (EMI), also called radio-frequency interference (RFI) when in the radio frequency spectrum, is a disturbance generated by
Electromagnetic_interference
Type of electronic filter
A line filter (aka EMC filter, EMI filter, RFI filter) is an electronic filter that is placed between the mains electricity input and internal circuitry
Line_filter
Technique for creating or enhancing the impression of depth in an image
low-cost eyeglasses which also contain a pair of opposite polarizing filters. As each filter only passes light which is similarly polarized and blocks the opposite
Stereoscopy
projection of 3D content. The registered name INFITEC is an acronym of Interference Filter Technology, which was invented and patented by the founder of the
Infitec
System with self-optimizing transfer function
An adaptive filter is a system with a linear filter that has a transfer function controlled by variable parameters and a means to adjust those parameters
Adaptive_filter
Film that gives an illusion of three-dimensional depth
was to create a filter for reducing glare from car headlights, Land did not underestimate the utility of his newly dubbed Polaroid filters in stereoscopic
3D_film
Optical phenomenon
Walter H. Geffcken created the first interference filters using dielectric coatings. Reflectometric interference spectroscopy Thin-film optics Transfer-matrix
Thin-film_interference
Astronomical spectral light processor
A Lyot filter (polarization-interference monochromator, birefringent filter), named for its inventor and French astronomer Bernard Lyot, is a type of optical
Lyot_filter
Filter that rejects signals outside a certain range
interest. Wideband receivers are particularly susceptible to such interference. A bandpass filter also optimizes the signal-to-noise ratio and sensitivity of
Band-pass_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
Optical filters that block near-infrared while passing visible light
Chelsea (2020-05-31). Photography: A 21st Century Practice. Routledge. ISBN 978-1-000-18524-9. UV filter Cold mirror and Hot mirror Interference filter
Infrared_cut-off_filter
Phenomenon resulting from the superposition of two waves
(constructive interference) or lower amplitude (destructive interference) if the two waves are in phase or out of phase, respectively. Interference effects
Wave_interference
Filter that rejects signals inside a certain range
In signal processing, a band-stop filter or band-rejection filter is a filter that passes most frequencies unaltered, but attenuates those in a specific
Band-stop_filter
Display device
earliest form of two-view display is the color anaglyph, which uses color filtered glasses, often red for the left eye and blue for the right eye. The precursor
3D_display
Linear filter in the time domain
perform matched filtering. This helps in constraining the occupied bandwidth of the waveform without introducing intersymbol interference (ISI). The combined
Root-raised-cosine_filter
Signal processing filter
a comb filter is a filter implemented by adding a delayed version of a signal to itself, causing constructive and destructive interference. The frequency
Comb_filter
Passive component (choke) suppressing high-frequency noise in electronic circuits
balun. Ferrite beads are one of the simplest and least expensive interference filters to install on preexisting electronic cabling. For a simple ferrite
Ferrite_bead
Pulse-shaping filter in digital modulation
raised-cosine filter is a filter frequently used for pulse-shaping in digital modulation due to its ability to minimise intersymbol interference (ISI). Its
Raised-cosine_filter
Process in electronics and telecommunications
limiting the bandwidth of the transmission and filtering the pulses to control intersymbol interference. Pulse shaping is particularly important in RF
Pulse_shaping
Device for suppressing part of a signal
the filters at each transmitter and each receiver try to balance passing the desired signal through as accurately as possible, keeping interference to
Filter_(signal_processing)
Signal processing technique to reduce noise
interference, through a filter that is designed to minimise the effect of the interference. The objective of optimal filtering is to maximise the signal-to-noise
Adaptive_noise_cancelling
Glass which displays different colors under different lighting conditions
some cases. The term dichroic is used more precisely when labelling interference filters for laboratory use. Another dichroic glass material first appeared
Dichroic_glass
Optical band-pass filter used in the physical sciences
systems. Atomic line filters are superior to conventional dielectric optical filters such as interference filters and Lyot filters, but their greater complexity
Atomic_line_filter
Form of distortion affecting communication reliability
shaping to avoid interference caused by the bandwidth limitation. If the channel frequency response is flat and the shaping filter has a finite bandwidth
Intersymbol_interference
Interference caused by a signal in an adjacent channel
Adjacent-channel interference (ACI) is interference caused by extraneous power from a signal in an adjacent channel. ACI may be caused by inadequate filtering (such
Adjacent-channel_interference
Measurement tool
long-life LED, is focused onto a prism surface via a lens system. An interference filter guarantees the specified wavelength. Due to focusing light to a spot
Refractometer
A 4G-LTE filter is a low-pass filter or notch filter, to be used in terrestrial television (over-the-air/OTA) TV antennas (both collective and individual)
4G-LTE_filter
Scientific facility at Haleakala Observatory in Hawaii, US
of the Sun. Each camera features 4k×4k pixels. The interference filters work as a band-pass filter that only transmits a selected wavelength range (i
Daniel K. Inouye Solar Telescope
Daniel_K._Inouye_Solar_Telescope
Distance over which a propagating wave maintains a certain degree of coherence
individual D line coherence length by a factor of 6. A very narrow-band interference filter would be required to isolate an individual D line. Physics portal
Coherence_length
Analog low-pass filter on communications networks
DSL filter prevents interference between such devices and a digital subscriber line (DSL) service connected to the same line. Without DSL filters, signals
DSL_filter
Device used to identify the presence and the amount of specific molecules in a medium
measure fluorescence on a microscopic level Interference filter, thin film filters that work by optical interference, showing how they can be tuned in some
Fluorometer
Marketing name
Digital Cinema". Retrieved 2018-11-11. Klein, Alexander (1999). "Interference Filters (Wavelength multiplex visualisation) / Infitec". Stereoscopy.com
Dolby_3D
Smoothing filler for images
A bilateral filter is a non-linear, edge-preserving, and noise-reducing smoothing filter for images. It replaces the intensity of each pixel with a weighted
Bilateral_filter
Highly visible-reflective surface that also transmits in infrared
multi-layer dielectric coatings, in a manner similar to interference filters. While the filters used with infrared photography absorb visible (and shorter)
Cold_mirror
Type of magnetometer
A SQUID (superconducting quantum interference device) is a very sensitive magnetometer used to measure extremely weak magnetic fields, based on superconducting
SQUID
Branch of physics that studies light
dielectric mirrors, interference filters, heat reflectors, and filters for colour separation in colour television cameras. This interference effect is also
Optics
Non-linear digital filtering technique to remove noise
The median filter is a non-linear digital filtering technique, often used to remove noise from an image, signal, and video. Such noise reduction is a typical
Median_filter
Filter in electronics and signal processing
signal processing, mainly in digital signal processing, a Gaussian filter is a filter whose impulse response is a Gaussian function (or an approximation
Gaussian_filter
Signal processing technique for sensor arrays
sensor array by means of optimal (e.g., least-squares) spatial filtering and interference rejection. To change the directionality of the array when transmitting
Beamforming
Constellation of six university-operated nanosatellites
satellite is equipped with one interference filter, either blue (BAb, BMb and BLb) or red (UBr, BTr and BHr). The blue filter transmits light in the range
BRITE
Statistical algorithm
squares (LMS) algorithms are a class of adaptive filter used to mimic a desired filter by finding the filter coefficients that relate to producing the least
Least_mean_squares_filter
Subatomic particle with no charge
degree of polarization, by use of magnetic mirrors and magnetized interference filters. Because of the strength of the nuclear force at short distances
Neutron
Mathematical method used in optics and acoustics
coatings, beam splitters, interferometers, neutral density filters and interference filters. The refractive index in layer m {\displaystyle m} at the wavelength
Transfer-matrix method (optics)
Transfer-matrix_method_(optics)
Type of image noise
granular structure observed in coherent light, resulting from random interference. Speckle patterns are used in a wide range of metrology techniques, as
Speckle_(interference)
Uses of the 2.4 GHz ISM radio spectrum
There are several uses of the 2.4 GHz ISM radio band. Interference may occur between devices operating at 2.4 GHz. This article details the different users
2.4_GHz_radio_use
Scientific facility in Big Bear Lake, California, U.S.
made of an interference filter and a digital CCD camera that samples the image of the Sun. The interference filter works as a band-pass filter that only
Goode_Solar_Telescope
Signal processing design process
Filter design is the process of designing a signal processing filter that satisfies a set of requirements, some of which may be conflicting. The purpose
Filter_design
Electromagnetic interference standards body
suppression characteristics of passive radio interference filters and suppression components CISPR 18-1 - Radio interference characteristics of overhead power lines
CISPR
Species of wasp
entire surface of each wing — one of the most elementary thin-film interference filters found in nature. The opacity of the wings — unusually dark compared
Megascolia_procer
Voltage common to both input terminals of an electrical device
longitudinal voltage. Common-mode interference (CMI) is a type of common-mode signal. Common-mode interference is interference that appears on both signal leads
Common-mode_signal
product created by the space industry, and was first used as an interference filter for precise scientific measuring. To create this effect, glass artists
Art_marble
American electrical engineer
Massachusetts Institute of Technology (MIT), where he worked on interference filtering and linear systems coding. While there, he worked with Norbert Wiener
John_P._Costas_(engineer)
Ability to see in low light conditions
Binocular night vision goggles on a flight helmet. The green color of the objective lenses is the reflection of the light interference filters, not a glow.
Night_vision
Labeling system for optical filters
actually Wratten filters mounted in standard 1+1⁄4 in (32 mm) or 2 in (nominal, 48 mm actual) filter threads. For imaging interference filters are used. Wratten
Wratten_number
Types of chemical compounds
Baell JB, Holloway GA (April 2010). "New substructure filters for removal of pan assay interference compounds (PAINS) from screening libraries and for their
Pan-assay interference compounds
Pan-assay_interference_compounds
Power supply with switching regulator
high-amplitude, high-frequency energy that the low-pass filter must block to avoid electromagnetic interference (EMI), a ripple voltage at the switching frequency
Switched-mode_power_supply
Electromechanical component in appliances
appliance fuse holder; a voltage selector; an electromagnetic interference line filter; an appliance outlet. Advantages of a power entry module over individual
Power_entry_module
Signal processing technique used in radar
adaptive filter on the antenna elements. For adaptive direct methods, Sample Matrix Inversion (SMI) uses the estimated (sample) interference covariance
Space-time adaptive processing
Space-time_adaptive_processing
Electric light bulb with a resistively heated wire filament
product that produced 29.8 lm/W. More advanced reflectors based on interference filters or photonic crystals can theoretically result in higher efficiency
Incandescent_light_bulb
Inductor used as a low-pass filter
but the component is simply called an "inductor" if used in electronic filters or tuned circuits. Inductors designed for use as chokes are usually distinguished
Choke_(electronics)
Imaging technology
solar-blind spectrum, but to strongly block the other wavelengths. Interference filters can pass 25% of the wanted rays, and reduce others by 1000 to 10
Solar-blind_technology
American worldwide manufacturing company
information about countermeasures against laser weapons, including light interference filters, to engineers in Singapore, the People's Republic of China, and the
ITT_Inc.
Type of photosensor
Bayer array sensors, reducing the likelihood of interference and removing a need for a low-pass filter that lowers image resolution. Conventional Bayer
Fujifilm_X-Trans_sensor
American multinational corporation
(AAC-LD), multichannel spatial audio with echo cancellation and interference filters to eliminate feedback from mobile devices, and inter-operation with
Poly_Inc.
Method for reducing unwanted sound
wave, in a process called interference, and effectively cancel each other out – an effect which is called destructive interference. Modern active noise control
Active_noise_control
Object used to guide and confine magnetic fields
lower Q than carbonyl iron. They are used mostly for electromagnetic interference filters and low-frequency chokes, mainly in switched-mode power supplies
Magnetic_core
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
Branch of optics
organs. Dichroic filter Dichroic prism Dielectric mirror Dual polarisation interferometry Fresnel equations Thin-film interference Transparent materials
Thin-film_optics
selectivity (filtering) and dynamic range than poorly designed inexpensive or disposable ones. Blocking (radio) Near–far problem "1FM blanketing interference: a
Blanketing
Instrument for scientific study of photosynthesis in plants
fluorometry. For that purpose, the LIFT instrument has a built-in optical interference filter to separate the red chlorophyll fluorescence from reflected light
Light-induced fluorescence transient
Light-induced_fluorescence_transient
Pattern of color filters over an image sensor
In digital imaging, a color filter array (CFA), or color filter mosaic (CFM), is a mosaic of tiny color filters placed over the pixel sensors of an image
Color_filter_array
Visual artifact present in composite video signals
take two forms: chrominance interference in luminance (chrominance being interpreted as luminance), luminance interference in chrominance. Dot crawl is
Dot_crawl
Process of removing noise from a signal
median filter is an example of a nonlinear filter and, if properly designed, is very good at preserving image detail. To run a median filter: consider
Noise_reduction
Iranian electronic equipment manufacturers
Computer Aided Design of multilayer coatings Production of different interference filters Production of long range binoculars Production of military periscopes
Iran_Electronics_Industries
Optical fiber instrument
self-focusing lens, its effect is completely the same. Interference film filter principle The interference film structure as shown in the drawings. The superposition
Fiber-optic_filter
United States law
information about countermeasures against laser weapons, including light interference filters, to engineers in Singapore, the People's Republic of China, and the
Arms_Export_Control_Act
Image denoising algorithm
"local mean" filters, which take the mean value of a group of pixels surrounding a target pixel to smooth the image, non-local means filtering takes a mean
Non-local_means
Image noise reducing technique
convolution between the image and a 2D isotropic Gaussian filter, where the width of the filter increases with the parameter. This diffusion process is
Anisotropic_diffusion
Electrical engineering concept
electromagnetic energy which may cause unwanted effects such as electromagnetic interference (EMI) or even physical damage to operational equipment. The goal of EMC
Electromagnetic_compatibility
Electronic filter that is constructed with waveguide technology
A waveguide filter is an electronic filter constructed with waveguide technology. Waveguides are hollow metal conduits inside which an electromagnetic
Waveguide_filter
Noise removal process during image processing
as total variation regularization or total variation filtering, is a noise removal process (filter). It is based on the principle that signals with excessive
Total_variation_denoising
Uses of capacitors in daily life
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
Applications_of_capacitors
Electric circuit added to biological signal amplifiers
is often added to biological signal amplifiers to reduce common-mode interference. Biological signal amplifiers such as ECG (electrocardiogram), EEG
Driven_right_leg_circuit
low cost light-emitting diode (LED) detectors in place of optical interference filters and photodiodes have a relatively wide spectral response. They might
Langley_extrapolation
Daily care of cultural heritage
this the materials themselves decay and the filters must be replaced. A better solution is interference filters, which can be customized for the setting
Collections_maintenance
Radio signal filtering device
off-frequency signals, cutting down or eliminating unwanted interference. Extra filtering can be useful because the first input stage ("front end") of
Preselector
Excessive displeasing noise
ZM, Turajlic SR (October 2005). "Application of the maximum signal to interference ratio criterion to the adaptive microphone array". Acoustics Research
Noise_pollution
Great Comet of 1970
images of the comet were taken from March 28 to April 18, 1970, with interference filters at different wavelengths in the violet, blue, green, and yellow regions
Comet_Bennett
High bandwidth channel access method
downlink beamforming is performed and is capable of spatial filtering known interference generating locations. Transmit and receive beam shaping and steering
WSDMA
Technique for patterning photomasks
Interference lithography (or holographic lithography) is a technique that uses coherent light (such as light from a laser) for patterning regular arrays
Interference_lithography
Compressed sensing spectroscopic technique
engine such as an interference filter based multivariate optical element (MOE), holographic grating, liquid crystal tunable filter, spatial light modulator
Multivariate optical computing
Multivariate_optical_computing
Mirror made of dielectric materials
prism systems. The reflectivity of a dielectric mirror is based on the interference of light reflected from the different layers of a dielectric stack. This
Dielectric_mirror
Optical filter device
optical filter that lets light waves of a specific polarization pass through while blocking light waves of other polarizations. It can filter a beam of
Polarizer
Electronic components
current filters are electronic components that can prevent noise signals travelling in the sheath of sheathed cables, which can cause interference. Using
Sheath_current_filter
Set of waveguides including a closed loop
functions as a filter. Additionally, as implied earlier, two or more ring waveguides can be coupled to each other to form an add/drop optical filter or to send
Optical_ring_resonators
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
INTERFERENCE FILTER
INTERFERENCE FILTER
INTERFERENCE FILTER
INTERFERENCE FILTER
Boy/Male
Welsh
Legendary son of Cadwy.
Surname or Lastname
English (Midlands)
English (Midlands) : habitational name from a place in Staffordshire, recorded as Bidolf in Domesday Book, from Old English bī ‘beside’ + dylf ‘digging’ (a putative derivative of delfan ‘to dig’), i.e. a mine or quarry.
Girl/Female
Hindu, Indian
Progress
Girl/Female
Muslim
Noble, Excellent, Generous, Distinguished
Surname or Lastname
English
English : topographic name from Middle English grene ‘green’ + dale ‘dale’, ‘valley’ or hille, hull ‘hill’; alternatively, the surname may have arisen from either of two habitational names meaning ‘green valley’: Greendale in Devon or Grindale in East Yorkshire, or from Grindal (‘green hill’) in Shropshire.South German : from Middle High German grindel ‘latch’, ‘beam’, ‘pole’, probably a metonymic occupational name for a doorman.Respelling of North German Grindel.
Girl/Female
Bengali, Gujarati, Hindu, Indian, Kannada, Kashmiri, Malayalam, Marathi, Oriya, Sanskrit, Sindhi, Tamil, Telugu
A Young Girl
Girl/Female
Hebrew Greek
From Elisheba, meaning either oath of God, or God is satisfaction.
Girl/Female
Hebrew
God will add.
Boy/Male
Hindu
Boy/Male
Arabic, Indian, Muslim, Turkish
Talented; Scholar; Another Name for God; Virtuous; Expert; Intelligent; Wise Elligent
INTERFERENCE FILTER
INTERFERENCE FILTER
INTERFERENCE FILTER
INTERFERENCE FILTER
INTERFERENCE FILTER
n.
Interference; interposition.
n.
The state or quality of being independent; freedom from dependence; exemption from reliance on, or control by, others; self-subsistence or maintenance; direction of one's own affairs without interference.
n.
Any interference that may affect the interests of others; especially, of one or more states with the affairs of another; mediation.
n.
One of a number of light or dark bands, produced by the interference of light; a diffraction band; -- called also interference fringe.
n.
Excessive interference.
a.
Exhibiting interference figures without the aid of a polariscope, as certain crystals.
n.
The act of coming between; intervention; interference.
n.
The act or state of interfering; as, the stoppage of a machine by the interference of some of its parts; a meddlesome interference in the business of others.
adv.
By or with interference.
n.
A state of opposition; antagonism; interference.
n.
The act of interceding; intercession; intervention.
n.
One who, by his officious /nterference, mars or frustrates a design or plot.
v. i.
To act reciprocally, so as to augment, diminish, or otherwise affect one another; -- said of waves, rays of light, heat, etc. See Interference, 2.
v.
To let be or do without interference; as, I left him to his reflections; I leave my hearers to judge.
n.
One of the contestants in interference before the Patent Office.
n.
The mutual influence, under certain conditions, of two streams of light, or series of pulsations of sound, or, generally, two waves or vibrations of any kind, producing certain characteristic phenomena, as colored fringes, dark bands, or darkness, in the case of light, silence or increased intensity in sounds; neutralization or superposition of waves generally.
n.
A conflict by collisions; a crowding or bumping together; interference.
v. t.
Unconstrained by the interference of another; unimpelled by the influence of another; not prompted or persuaded by another; done of his or its own accord; spontaneous; acting of one's self, or of itself; free.
v. i.
To keep one's self from action or interference; to hold aloof; to forbear; to abstain.
n.
The act or state of interfering, or of claiming a right to the same invention.