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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
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
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
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 (a.k.a. EMC filter, EMI filter, RFI filter) is an electronic filter that is placed between the mains electricity input and internal circuitry
Line_filter
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
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
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
Optical phenomenon
Walter H. Geffcken created the first interference filters using dielectric coatings. Reflectometric interference spectroscopy Thin-film optics Transfer-matrix
Thin-film_interference
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
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
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
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
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 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
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
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
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
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
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
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
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)
Process in electronics and telecommunications
limiting the bandwidth of the transmission and filtering the pulses to control intersymbol interference (ISI). Pulse shaping is particularly important
Pulse_shaping
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
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
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
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
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
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
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
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
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
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
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
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
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
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 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)
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
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
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
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
Marketing name
Digital Cinema". Retrieved 2018-11-11. Klein, Alexander (1999). "Interference Filters (Wavelength multiplex visualisation) / Infitec". Stereoscopy.com
Dolby_3D
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
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
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
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
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
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
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
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
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
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)
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)
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
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)
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
Point where a function crosses an axis and changes sign
within an image. They are called edge detection or gradient filters. A gradient filter is a filter that seeks out areas of rapid change in pixel value. These
Zero_crossing
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
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
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.
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
Branch of optics
organs. Dichroic filter Dichroic prism Dielectric mirror Dual polarisation interferometry Fresnel equations Thin-film interference Transparent materials
Thin-film_optics
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
Interface conditions for electromagnetic fields Interference (wave propagation) Interference filter Interferometric gravitational wave detector Interferometry
Index_of_physics_articles_(I)
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
Interference pattern
/mwɑːˈreɪ/ mwah-RAY, French: [mwaʁe] ) or moiré fringe is a large-scale wave interference pattern that can be produced when a partially opaque ruled pattern with
Moiré_pattern
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
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
selectivity (filtering) and dynamic range than poorly designed inexpensive or disposable ones. Blocking (radio) Near–far problem "1FM blanketing interference: a
Blanketing
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
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
Device for receiving radio transmissions
IF filters that have very high Q factors, to improve selectivity. The RF filter on the front end of the receiver is needed to prevent interference from
Radio_receiver
Optical device for selecting part of a spectrum
compensates for path length delays that would stretch ultrashort pulses Wien filter – a technique for producing "monochromatic" electron beams, where all the
Monochromator
filter based on (9) can be designed so that the undesired interferences are suppressed from its corresponding output trace. In designing this filter we
Velocity_filter
American bassist (born 1968)
band in 1999. She has also been a member of Catherine and performed with Filter. Wretzky was born on May 1, 1968, and grew up in South Haven, Michigan,
D'arcy_Wretzky
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
Algorithm for noise reduction in images
Block-matching and 3D filtering (BM3D) is a 3-D block-matching algorithm used primarily for noise reduction in images. It is one of the expansions of
Block-matching and 3D filtering
Block-matching_and_3D_filtering
Technology to send internet signals over conventional power line grids
degradation.) Interference mitigation: BPL systems need incorporate measures to manage interference for consistent data transmission. Specific filtering methods
Broadband_over_power_lines
INTERFERENCE FILTER
INTERFERENCE FILTER
INTERFERENCE FILTER
INTERFERENCE FILTER
Male
Danish
, forefather's relic.
Girl/Female
Tamil
Redness
Boy/Male
Hindu
Boy/Male
Gujarati, Hindu, Indian
Beam Light of Moon; Divine
Boy/Male
Tamil
Girl/Female
Biblical
Good, goodness (the tenth month of the Hebrews).
Boy/Male
Arabic, Indian, Muslim
Desirous
Boy/Male
Hindu, Indian
Love
Boy/Male
Celebrity, Gujarati, Hindu, Indian, Kannada, Kashmiri, Malayalam, Marathi, Oriya, Sanskrit, Sindhi, Tamil, Telugu, Traditional
Good Attitude; Beautiful; Captivating; One who Wins over Mind
Boy/Male
Muslim
Hope
INTERFERENCE FILTER
INTERFERENCE FILTER
INTERFERENCE FILTER
INTERFERENCE FILTER
INTERFERENCE FILTER
n.
One of a number of light or dark bands, produced by the interference of light; a diffraction band; -- called also interference fringe.
n.
A conflict by collisions; a crowding or bumping together; interference.
n.
Excessive interference.
n.
A state of opposition; antagonism; interference.
adv.
By or with interference.
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.
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.
n.
The act of interceding; intercession; intervention.
n.
The act or state of interfering, or of claiming a right to the same invention.
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.
v.
To let be or do without interference; as, I left him to his reflections; I leave my hearers to judge.
n.
The act of coming between; intervention; interference.
a.
Exhibiting interference figures without the aid of a polariscope, as certain crystals.
n.
Interference; interposition.
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.
n.
One of the contestants in interference before the Patent Office.
n.
One who, by his officious /nterference, mars or frustrates a design or plot.
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.