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control Dictionary Terms

Nd:YAG laser
Nd:YAG laser refers to a solid-state laser that utilizes neodymium-doped yttrium aluminum garnet (Nd:Y3Al5O12) as the gain medium. This type of laser emits light at a wavelength of 1064 nm in the infrared region of the electromagnetic spectrum. ...
diamond turning
Diamond turning, also known as diamond machining or diamond cutting, is a precision machining process used to produce...
fusion ignition
Fusion ignition refers to the point in a controlled nuclear fusion reaction where the energy released by the fusion...
electro-optic modulator
An electro-optic modulator (EOM) is a device used to modulate the amplitude, phase, or polarization of light waves using an...
photonic crystals
Photonic crystals are artificial structures or materials designed to manipulate and control the flow of light in a manner...
superresolution
Superresolution refers to the enhancement or improvement of the spatial resolution beyond the conventional limits imposed by...
piezoelectric motion systems
Piezoelectric motion systems are mechanical systems that utilize piezoelectric materials to generate controlled motion or...
unipotential electrostatic lens
A simple electrostatic lens with a focus controlled by a single potential difference.
micro-robotics
Micro-robotics refers to the field of robotics that involves the design, development, and application of miniature robotic...
synchronous detector
A detector sensitive only to signals close to or at a particular frequency that is the same as the frequency of a control...
spectrosensitometer
A sensitometer having a continuously controlled monochromator to measure spectral sensitivity and contrast of photographic...
laser controlled area
Area in which laser operation occurs and therefore safety requirements are met and regulations are implemented. Lasers...
virtual reality
Virtual reality (VR) is a computer-generated simulation of a three-dimensional environment or experience that can be...
photosensitive recording
The recording achieved when a surface, illuminated by a signal-controlled light beam, emits electrons or reacts in some...
fluorescent protein
Fluorescent proteins are proteins that exhibit the property of fluorescence, which is the ability to absorb light at a...
laser rangefinder
A laser rangefinder is a device that uses laser technology to measure the distance between the device and a target. It...
blue diode laser
A blue diode laser is a type of semiconductor laser that emits light in the blue wavelength range of the electromagnetic...
autoguider
A CCD sensor that provides feedback to the motion control system for a telescope, allowing the telescope to follow a...
tracking system
A controlled motion system that may use a telescope, camera or antenna to follow accurately a satellite, missile, vehicle or...
nanoimprint lithography
Nanoimprint lithography (NIL) is a nanolithography technique used for fabricating nanoscale patterns on a substrate. It is a...
laser drift
Laser drift typically refers to a phenomenon where the frequency or wavelength of a laser source gradually changes over...
current transient
A sudden, brief increase in current or voltage in a circuit that can damage sensitive components and instruments. Preventive...
flowmeter
A flowmeter is a device used to measure the flow rate or quantity of a fluid passing through a particular point in a system....
infrared light-emitting diode
An infrared light-emitting diode (IR LED) is a semiconductor device that emits infrared light when an electric current...
resonator
A resonator is a device or system that exhibits resonance, which is a phenomenon that occurs when an external force or...
infrared automatic mass screening
A thermal infrared imaging procedure developed for quality control of printed circuit boards. The thermogram of each board...
programmable logic controller
In computerized industrial process control, the element that determines the choice and sequence of operations dependent on...
endoscope
An endoscope is a medical device used for visualizing and examining the interior of hollow organs, body cavities, or...
fiber optic preform
A fiber optic preform is a cylindrical glass rod or tube used as the starting material for manufacturing optical fibers. It...
laser surgery
Laser surgery refers to a medical procedure in which a laser, or focused beam of light, is used as a precision tool to cut,...
thyristor
A family of semiconductor switching devices of which the silicon-controlled rectifier and the triac are most commonly used....
horizontal drive control
A device that controls the output of a television receiver's horizontal oscillator.
CID camera
CID, or charge injection device, camera refers to a type of imaging device that utilizes a specific kind of solid-state...
GaN-based LEDs
Gallium nitride-based light-emitting diodes (GaN-based LEDs) are semiconductor devices that emit light when an electric...
mode beating
In optics, "mode beating" refers to an interference phenomenon that can occur in laser systems with multiple longitudinal...
reactive evaporation
Reactive evaporation refers to a process in thin-film deposition where a material is deposited onto a substrate through...
photoelectric control
The control of an instrument or electrical circuit by the current produced by varying radiation incident to a photoelectric...
two-photon polymerization
Two-photon polymerization (TPP) is a technique used in additive manufacturing, specifically in the field of 3D printing. It...
transverse mode
In the context of optics and lasers, a transverse mode refers to a specific spatial pattern of the electric field within the...
optical cements and adhesive
Optical cements and adhesives are specialized materials used in the assembly and bonding of optical components in optical...
line-scan camera
A line-scan camera, also known as a line-scan image sensor or linear array camera, is a type of digital camera designed to...
microfluidics
Microfluidics is a multidisciplinary field that involves the manipulation and control of very small fluid volumes, typically...
liquid marble
Liquid marble refers to a unique form of microscale liquid encapsulation, where small droplets of liquid are coated with a...
phase mask
In optics and photolithography, a phase mask refers to a device that modifies the phase of light waves passing through it....
hydrogel
A hydrogel is a three-dimensional network of polymer chains that are hydrophilic, meaning they have a strong affinity for...
ion-beam sputtering
Ion-beam sputtering (IBS) is a physical vapor deposition (PVD) technique used for depositing thin films onto substrates. It...
RTSP protocol
RTSP, or real-time streaming protocol, is a network control protocol designed for controlling streaming media servers. It is...
electrowetting display
An electrowetting display (EWD) is a type of electronic display technology that utilizes the principles of electrowetting to...
laser drill
High power laser ablation device that by pulsed operation produces holes of controllable dimension on the scale of microns....
spatial light modulator
A spatial light modulator (SLM) is an optical device that modulates or manipulates the amplitude, phase, or polarization of...
contour projection chart
A large-scale, precise drawing of the contours of a perfect mechanical part, often with plus and minus tolerances drawn or...
otoscope
An otoscope is a medical device used by healthcare professionals, particularly ear, nose, and throat (ENT) specialists,...
light-activated silicon-controlled rectifier
A PN-PN device with incident light taking the place of gate current; three of the four semiconductor regions are available...
CCD camera
A CCD camera, or charge-coupled device camera, is a type of digital camera that utilizes a CCD image sensor to capture and...
underwater television system
A television system designed to obtain pictures of objects or scenes beneath the surface of the water. Generally, a...
area scan
Area scan, in the context of imaging and cameras, refers to a method of capturing an entire two-dimensional image in a...
cold atom
Cold atoms refer to atoms that have been cooled to extremely low temperatures, typically in the microkelvin (µK) to...
photoelectric scanner
A system mounted a few inches above a moving plane that consists of a light source, lenses and one or more phototubes. In...
molded lens
A molded lens is an optical lens manufactured using a molding process, typically involving the shaping of a material, such...
chemical vapor deposition equipment
Chemical vapor deposition (CVD) equipment refers to a class of specialized apparatus used in the process of chemical vapor...
3D laser line profile sensor
A 3D profile sensor, also known as a 3D profiling sensor or 3D depth sensor, is a technology that is used to capture and...
complementary metal-oxide semiconductor
Complementary metal-oxide-semiconductor (CMOS) refers to a technology used in the fabrication of integrated circuits,...
epitaxial equipment
Epitaxial equipment refers to a set of specialized tools and systems used in the process of epitaxy, which is the growth of...
MTF optimization
Computerized lens design algorithm that permits the lens MTF characteristic to be included and controlled during the...
near-infrared spectrometer
A near-infrared (NIR) spectrometer is an analytical instrument used to measure the absorption, transmission, or reflection...
lens mount
The metal tube that maintains the optical components of a lens in proper relationship. Some lenses are mounted in metal...
deformable mirror device
A spatial light modulator consisting of a metallized polymer film stretched over an array of metal-oxide semiconductor...
digital twin
A digital twin refers to a virtual representation or digital counterpart of a physical object, system, or process. This...
lens testing equipment
Lens testing equipment refers to a range of specialized tools and instruments used to evaluate the optical performance,...
spectral repeatability
Spectral repeatability refers to the consistency and reproducibility of spectral measurements across multiple trials or...
actuator
Mechanical device intended for the translation (rotational and linear) using high precision control from electronically...
Babinet-Jamin compensator
A Babinet compensator that contains the controlled motion of one prism with respect to the other. This idea was introduced...
reagent
A reagent is a substance or compound that is used in a chemical reaction to bring about a specific transformation or to...
thin-film deposition equipment
Thin-film deposition equipment refers to machinery and tools used in the process of depositing thin layers of material onto...
hyperspectral imaging camera
A hyperspectral imaging camera is a sophisticated imaging device capable of capturing and processing data across a wide...
fiber laser
A fiber laser is a type of laser in which the active gain medium is an optical fiber doped with rare-earth ions such as...
absorption lens
An optical lens manufactured to control the transmission of light over a specified wavelength range. Low absorption lenses...
monostable display
A matrix-controlled display that has no information storage at the display surface.
stroke pattern
The pattern formed by a character generation cathode-ray tube system, in which the characters are composed of a sequence of...
optical assembly
An optical assembly refers to a collection of optical components that are carefully arranged and aligned to perform a...
global optimization
A controlled random search process, such as generalized simulated annealing, that has been incorporated into many optical...
advanced driver assistance systems
Advanced driver assistance systems (ADAS) refers to a set of safety features and technologies designed to assist drivers in...
Risley prism
A Risley prism, also known as a Risley prism pair or Risley rotating prism, is an optical device used for controlling the...
ultrafast pulsed laser
An ultrafast pulsed laser is a type of laser that emits extremely short pulses of light with durations typically on the...
annealing furnace
An oven or furnace that possesses the design requirements and heat control necessary to anneal glass for the optical...
machine vision lens
A machine vision lens is a specialized optical lens designed for use in machine vision systems, which are used for automated...
unmanned aerial vehicle
An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without a human pilot onboard. UAVs are remotely...
azimuthal polarization
Azimuthal polarization refers to a specific polarization state of light where the electric field vector of the...
modulator crystal
A nonlinear crystal used to modulate a polarized beam of light by means of the Pockels effect. A Pockels cell is used as a...
doping
In the context of materials science and semiconductor physics, doping refers to the intentional introduction of impurities...
triac
A semiconductor device that functions as an electrically controlled switch for AC loads.
resistor
A device having electrical resistance and used in an electric current for purposes of protection, operation or control of...
tetrode
An electron tube that has an anode, a cathode, a control electrode and another electrode (usually a screen grid).
nanophotonics
Nanophotonics is a branch of science and technology that explores the behavior of light on the nanometer scale, typically at...
microenvironmental control system
Equipment that supports microscopic live-cell imaging by managing the gas, media perfusion, temperature and other factors to...
scanning head
A device composed of a light source and phototube used to scan a moving strip of material in photoelectric side-register...
holographic grating
A holographic grating is a type of diffraction grating that is produced using holographic recording techniques. It consists...
dewetting
Dewetting is a phenomenon in materials science and physics where a thin film or coating spontaneously undergoes a process of...
arc flash
An arc flash is a sudden release of electrical energy due to an electric arc — a continuous, high-current discharge of...
automatic optical inspection
A system for automatic industrial process control or measurement, consisting of an optical module for image acquisition, a...
flow chemistry
Flow chemistry, also known as continuous-flow chemistry, is a chemical manufacturing process where reactions take place in a...
optical tweezers
Optical tweezers refer to a scientific instrument that uses the pressure of laser light to trap and manipulate microscopic...
automatic power control circuit
prelasing
When uncontrolled laser energy leaks from a laser cavity prematurely, it causes serious damage to optical components and...
infrared optic
Infrared optics refer to optical components and systems designed to manipulate and control infrared (IR) light, which lies...
distributed feedback laser
A distributed feedback laser (DFB laser) is a type of semiconductor laser diode designed to emit coherent, narrow-bandwidth...
active-matrix
An OLED display that has an integrated electronic backplane as its substrate. Active-matrix OLED displays use at least two...
optical memory
1. The direct storage of data as bits in memory using optical systems and properties. The memory makes use of a laser beam...
digital camera
A digital camera is a device that captures and records still images or video in digital format. Unlike traditional film...
metasurfaces
Metasurfaces are two-dimensional arrays of subwavelength-scale artificial structures, often referred to as meta-atoms or...
2D profile sensor
A 2D profile sensor is a type of sensor used in various industrial and technological applications to measure and capture...
custom lapping and polishing services
Custom lapping and polishing services involve specialized processes used to improve the surface finish and dimensional...
sagged bevel
The shape of the edge of a concave surface when the depth of the bevel plane to the vertex of the surface is controlled to a...
impurity level
In the context of optical materials, the term "impurity level" refers to the presence of foreign atoms or molecules within...
laser texturing
Laser texturing is a manufacturing process that involves using a laser beam to selectively modify the surface of a material,...
photonic integrated circuit
A photonic integrated circuit (PIC) is a compact and integrated device that incorporates multiple photonic components and...
broadband dielectric mirrors
Broadband dielectric mirrors, also known as broadband mirrors, are optical coatings designed to efficiently reflect or...
single instruction/multiple data
A computer architecture used in parallel processing whereby the processing elements are directed by a single, central...
GaN distributed feedback lasers
GaN (gallium nitride) distributed feedback (DFB) lasers refer to a specific type of semiconductor laser based on Gallium...
ellipsometry
Ellipsometry is an optical technique used to characterize the properties of thin films and surfaces. It is based on the...
pulsed sandwich holography
Separation of incident laser pulses by several seconds so holographic plates can be changed and sandwiched between the...
linear actuator
High-precision motorized positioning device, often linked to computer control equipment.
Ruticon
A ruticon is an opto-electronic device in which light going through it can be modulated by an electric field. The...
brightness control
The manual shifting bias control of a cathode-ray tube that determines both the average brightness and the contrast of a...
point cloud
A point cloud is a set of data points in a three-dimensional coordinate system, where each point represents a specific...
near-infrared spectroscopy
Near-infrared spectroscopy (NIRS) is a non-invasive analytical technique that uses the near-infrared region of the...
3D printing
3D printing, also known as additive manufacturing (AM), is a manufacturing process that builds three-dimensional objects...
camera shutter
An apparatus, designed for use with a camera, that is used to rapidly open the path from lens to film, to maintain the...
slicing and cutting machines - for crystals, quartz, glass, etc.
A crystal, glass, or quartz slicing and cutting machine is a specialized piece of equipment used in the manufacturing...
Camera Link HS
Camera Link HS (high speed) is a standard developed for high-speed digital data transmission in machine vision and...
selective laser melting
Selective laser melting (SLM) is an additive manufacturing (AM) or 3D printing technology that belongs to the powder bed...
scanning electron microscopy
Scanning electron microscopy (SEM) is an advanced imaging technique used in microscopy to obtain high-resolution,...
solid-state light valve
A light valve that uses a crystal as the control layer medium and that operates on the principle of the electro-optic effect.
photochromic
Photochromic refers to a property exhibited by certain materials, typically organic compounds or dyes, which undergo...
topological photonics
Topological photonics is a branch of physics and optics that explores the application of topological concepts to the...
Abbe constant
A dispersion relation defined in order to value the reciprocal amount of dispersion. It is defined as the refractivity over...
Manufacturing Automation Protocol
A computerized token-passing local area network (LAN) configuration adopted by General Motors for real time control over the...
in vitro
In vitro is a Latin term that translates to "in glass." In scientific contexts, particularly in biology and medicine, it...
automatic gain control
A method of producing an essentially constant output signal from an electronic circuit despite variations in the strength of...
Kerr effect
The Kerr effect, named after the physicist John Kerr who first observed it in 1875, is a nonlinear optical phenomenon where...
motion controller
In optics, a motion controller refers to a device or system that precisely controls the movement of optical components, such...
micro-optics
Micro-optics refers to the design, fabrication, and application of optical components and systems at a microscale level....
machine vision
Machine vision, also known as computer vision or computer sight, refers to the technology that enables machines, typically...
lattice
In photonics, a lattice refers to a periodic arrangement of optical elements or structures, often on a microscopic or...
electron-beam lithography system
An electron-beam lithography (EBL) system is a sophisticated nanofabrication tool used in the semiconductor industry and...
network interface card
A network interface card (NIC), also known as a network adapter or LAN adapter, is a hardware component that allows...
zoom
To control, by magnifying or reducing, the size of a televised image, either electronically or optically.
pathogen
A pathogen is a biological agent, such as a virus, bacterium, fungus, protozoan, or parasite, that causes disease in its...
electron power tube
An electron-beam tube with power-handling capability that is essentially based on controlled electron beams. Its control and...
feedback control system
A system designed to control the output quantity of a device by returning a portion of its output signal to its input. This...
vidicon
A small television tube originally developed for closed-circuit television. It is about 1 inch in diameter and 5 inches...
photobleaching
Photobleaching is a phenomenon in which the fluorescence of a fluorophore (a fluorescent molecule or dye) is permanently...
optoelectronic shutter
A device used to control or block a light beam by means of the Kerr electro-optical effect, and other electro-optic devices...
laser diode module
A laser diode module is a compact device that incorporates a laser diode, optics, and often other components into a single...
focus control
1. A mechanism that permits the focusing of an optical system.2. A means of obtaining the sharpest image from a cathode-ray...
quantum dot light-emitting diode
Quantum dot light-emitting diode (QLED) is a display technology that utilizes quantum dots, which are semiconductor...
array processor
In image processing, a specially designed programmable computer peripheral that attaches to the host system for the purpose...
contrast control
With respect to television, a potentiometer that allows variation of the intensity of the different elements of an image and...
laser-mediated gene transfer
Laser-mediated gene transfer refers to a technique in molecular biology and genetic engineering that utilizes lasers to...
PIN photodiode
A PIN photodiode is a type of photodetector or semiconductor device used to convert light signals into electrical signals....
crystal oven
A temperature-controlled container used to stabilize the temperature and resonant frequency of a crystal found in a...
ultraviolet reflectance
Ultraviolet reflectance refers to the ability of a material or surface to reflect UV light. Ultraviolet light is...
sandwich holography
The simultaneous exposure of two holographic plates with emulsions facing the object. After deformation, a second pair of...
epitaxial deposition
Epitaxial deposition is a process used in semiconductor manufacturing and materials science to grow a thin crystalline...
pixel
A pixel, short for "picture element," is the smallest controllable element of a digital image or display. It is a...
transfer blocking
A process used to control thickness and parallelism precisely during the production of plane-parallel plates. Elements are...
computer-integrated manufacturing
The use of computer systems for monitoring and controlling industrial production.
active-matrix OLED display
An OLED display that has an integrated electronic backplane as its substrate. Active-matrix OLED displays use at least two...
optical materials
Optical materials refer to substances or compounds specifically chosen for their optical properties and used in the...
phonon
A phonon is a quantum of vibrational energy associated with the periodic motion of atoms or molecules in a crystalline...
machine vision lighting
Machine vision lighting refers to the use of specific lighting techniques and equipment in the field of machine vision,...
photodetector
A photodetector, also known as a photosensor or photodiode, is a device that detects and converts light into an electrical...
infrared lens
An infrared lens is an optical component specifically designed and optimized for transmitting, focusing, or manipulating...
galvanometric scanner
A galvanometric scanner, also known as a galvanometer scanner or galvo scanner, is a type of optical scanning device used to...
modified chemical vapor deposition
Modified chemical vapor deposition (MCVD) is a technique used in the fabrication of optical fibers. It is a specialized form...
liquid crystal
Liquid crystals are a state of matter that exhibits properties intermediate between those of conventional liquids and solid...
light-activated silicon-controlled switch
Similar to LASCR, except that all four regions are available.
sun-tracking concentrator
Controlled beam technology that introduces beams of sunlight through holes in a roof that are relayed throughout the...
CMOS camera
A CMOS camera refers to an imaging device that employs a complementary metal-oxide-semiconductor (CMOS) image sensor to...
halogen lamp
A halogen lamp, also known as a tungsten halogen, quartz-halogen, or quartz iodine lamp, is an incandescent lamp that uses a...
character read-out system
A photoelectrically controlled, alphanumeric reading device that converts characters to audible or sorting signals which can...
fiber optic sensor
A fiber optic sensor is a device that uses optical fibers to detect and measure physical, chemical, biological, or...
molecular motor
A molecular motor refers to a nano-sized device composed of organic molecules or other small-scale components that can...
input/output
I/O stands for input/output. In computing, it refers to the communication between a computer system or program and its...
acousto-optic modulators and deflectors
An acousto-optic modulator (AOM) is a device that utilizes the interaction between sound waves and light waves to modulate...
electroforming process
An electrochemical process of metal fabrication using an electrolyte, an anode to supply the metal, and a control of the...
electron multiplication charge-coupled device camera
An EMCCD (electron-multiplying charge-coupled device) camera is a type of scientific camera specifically designed for...
voltage contrast analysis
A nondestructive testing method for very large scale integration circuits, using a scanning electron microscope to monitor...
FTIR spectrometer
FTIR (Fourier transform infrared) spectrometer is a powerful analytical instrument used to obtain an infrared spectrum of...
machine vision system
A machine vision system is an integrated combination of hardware and software components designed to capture, process, and...
magnetorheological finishing
Magnetorheological finishing (MRF) is a precision optics polishing technique used for shaping and finishing optical surfaces...
crystal oscillator
An oscillator that uses a piezoelectric crystal to control its frequency.
lab-on-a-chip
A lab-on-a-chip (LOC) is a miniaturized device that integrates various laboratory functions and capabilities onto a single,...
entrance slit
The entrance slit, also known simply as the slit, is an essential component in optical instruments such as spectrometers and...
wedge ring detector
A diffraction pattern sampling unit composed of a 32-element monolithic silicon photodiode array and a readout unit. The...
process control
The collection and analysis of data relevant to monitoring the rate and quality of industrial production, either...
optical clock
An optical clock is a highly precise and advanced timekeeping device that relies on the oscillations of electromagnetic...
organic light-emitting diode
An organic light-emitting diode (OLED) is a type of light-emitting diode (LED) technology that utilizes organic compounds to...
vacuum chamber
A vacuum chamber is a sealed enclosure from which air and other gases are removed to create a low-pressure environment,...
standard thermal profile
In infrared imaging systems used for mass screening of printed circuit boards or other quality control applications, an...
monitor current
In a laser diode, the photocurrent produced by a photodiode that detects the emission from the rear facet of the...
fiber-coupled LED
A fiber-coupled LED (light-emitting diode) refers to an LED device that is optically coupled to an optical fiber for the...
photonic crystal surface-emitting laser
A photonic crystal surface-emitting laser (PCSEL) refers to a type of laser diode that emits light from its surface rather...
bistable display
A matrix-controlled display that has information storage at the display surface, and requires that an element be addressed...
optical switching
Optical switching refers to the process of controlling the routing or transmission of optical signals within a network using...
quantum cascade laser
A quantum cascade laser (QCL) is a type of semiconductor laser that operates based on the principles of quantum mechanics....
optical gate
An optical gate typically refers to a device or system that controls the transmission of light, allowing it to pass through...
infrared filter
A filter exhibiting transparency, absorption or reflectance characteristics specifically for spectral control of wavelengths...
electro-optic shutter
A device used to control or block a light beam by means of the Kerr electro-optical effect.
birefringence
Birefringence is an optical property of certain materials that causes them to exhibit different refractive indices for light...
solar simulator
A solar simulator is a device used to replicate the spectrum and intensity of sunlight in a controlled environment for...
cell
1. A single unit in a device for changing radiant energy to electrical energy or for controlling current flow in a circuit....
terahertz spectrometer
A terahertz spectrometer is a scientific instrument used to measure and analyze the properties of materials in the terahertz...
ultraviolet fiber optics
Ultraviolet (UV) fiber optics refers to optical fibers that are designed and optimized for the transmission of ultraviolet...
optical manufacturing tools and machinery
Optical manufacturing tools and machinery encompass a wide range of equipment, instruments, and systems used in the...
etalon
An etalon is an optical device that consists of two parallel reflecting surfaces separated by a precise and known distance....
filovirus
Filoviruses are a family of viruses that are responsible for severe and often fatal hemorrhagic fevers in humans and...
laser ablation
Laser ablation is a process that involves the removal or erosion of material from a target surface using laser energy. This...
PLZT
A transparent lead-lanthanum zirconate titanate ceramic with optical qualities that can be controlled by applying voltages...
gradient-index profile
The term gradient-index profile refers to a specific type of refractive index distribution within an optical material. In...
epitaxy
A well controlled thin films technique for growing films with good crystal structure in ultra high vacuum environments at...
adaptive optics
Adaptive optics (AO) is a technology used to improve the performance of optical systems by reducing the effects of...
color center
A color center, in the context of materials science and condensed matter physics, refers to a specific type of...
iris diaphragm
A mechanical device designed to smoothly vary the effective diameter of a lens, thereby controlling the amount of light...
camera
A light-tight box that receives light from an object or scene and focuses it to form an image on a light-sensitive material...
passive-matrix OLED display
An OLED display formed by creating an array of OLED pixels connected by intersecting anode and cathode conductors arranged...
Fresnel lens
A Fresnel lens is a type of optical lens that consists of a series of concentric grooves or steps carved into a flat, thin...
lock-in amplifier
A lock-in amplifier is a specialized electronic instrument used to extract and measure small signals embedded in noise or...
ospin
Opsins are a group of light-sensitive proteins found primarily in the retinas of vertebrate and invertebrate eyes, as well...
meta-optics
Meta-optics, also known as metasurface optics or flat optics, is a branch of optics that involves the design, fabrication,...
mirror mount
A mirror mount is a mechanical device used to secure and precisely position mirrors in optical systems. Mirrors are...
metalens
A metalens, short for "metasurface lens," is a type of optical lens that uses nanostructured materials to manipulate light...
Rockwell hardness
Rockwell hardness (Rc) refers to a method for measuring the hardness of a material, primarily metals, using an indentation...
liquid crystal light valve
A liquid crystal light valve (LCLV), also known as a spatial light modulator (SLM), is an optical device that modulates the...
monochromator
A monochromator is an optical instrument used to isolate and select a narrow range of wavelengths from a broader spectrum of...
plasmon ion-assisted deposition
Plasmon ion-assisted deposition (PIAD) is a technique used in thin-film deposition processes, particularly in the production...
electronically controlled coupling
The use of an electric field or signal to couple a lightwave from one dielectric waveguide into another dielectric waveguide.
time domain
The time domain is a concept used in signal processing and analysis to describe signals in terms of their behavior over...
jig
A device to hold and locate a workpiece as it guides, controls or limits a cutting tool.
biometrics
Biometrics refers to the automated recognition of individuals based on their physiological or behavioral characteristics....
inertial confinement fusion
Inertial confinement fusion (ICF) is a method of achieving nuclear fusion, a process where two atomic nuclei combine to...
function generator
A computer hardware unit that generates required functional information on the screen by controlling CRT beam movements or...
metrology
Metrology is the science and practice of measurement. It encompasses the theoretical and practical aspects of measurement,...
colorimeter
A colorimeter is a device used to measure and quantify the color characteristics of an object or a light source. It provides...
GigE
GigE, short for gigabit Ethernet, refers to a standard for high-speed Ethernet communication, capable of transmitting data...
Koehler illumination
A two-stage illuminating system for a microscope in which the source is imaged in the aperture of the substage condenser by...
in vivo
In vivo is a Latin term that translates to "within the living." In scientific contexts, particularly in biology and...
phototube relay
A photoelectrical relay that uses a phototube as its photoelectric device to open and close an electrical relay; used to...
freeform mirrors
Freeform mirrors refer to reflective optical components that deviate from traditional symmetric or rotationally symmetric...
light valve
With respect to display systems, a device that uses an independent light source and a control-layer medium, the active...
cleanroom
An area in which airborne particulates can be monitored and controlled so that given size particles do not exceed a...
sputtering equipment
Sputtering equipment is machinery used in the process of physical vapor deposition (PVD), specifically sputtering....
evaporation coating
Coating carried out in a sealed chamber evacuated by a mechanical pump in series with an oil diffusion pump to a pressure...
MEMS fiber optic switch
A MEMS fiber optic switch is a microelectromechanical system (MEMS) device designed to selectively route optical signals...
additive manufacturing
Additive manufacturing (AM), also known as 3D printing, is a manufacturing process that involves creating three-dimensional...
rotating mirror scanner
Developed for use in military reconnaissance systems, it consists of a polygonal mirror, drive motor, interface between...
long-pass filter
A long-pass filter is an optical filter that allows longer wavelengths of light to pass through while blocking or...
femtosecond laser
A femtosecond laser is a type of laser that emits ultrashort pulses of light with durations on the order of femtoseconds,...
optical fiber optic switches
Optical fiber optic switches are devices used in optical fiber communication systems to selectively route optical signals...
Pockels
In optics, the Pockels effect refers to the phenomenon where the refractive index of a material changes in response to an...
optogenetics
A discipline that combines optics and genetics to enable the use of light to stimulate and control cells in living tissue,...
output coupler
The partially reflective mirror at the end of the laser cavity that is the source of the beam. It controls the coupling...
germicidal UV
Germicidal ultraviolet (GUV) refers to a specific range of UV radiation that has disinfectant properties capable of killing...
mixed-signal oscilloscope
A mixed-signal oscilloscope (MSO) is a type of electronic test instrument that combines the capabilities of both a...
phase screen
A phase screen, in the context of optics and wave optics, refers to a surface or medium that introduces a phase delay to an...
masks for evaporation/deposition
In the context of thin film deposition processes such as evaporation or sputtering, masks are used to selectively deposit...
Peltier cooler
A Peltier cooler, also known as a thermoelectric cooler (TEC) or thermoelectric module, is a solid-state device that uses...
telepresence
The use of head-mounted displays and body-operated remote actuators to control distant machinery. Provides a virtual...
computer polarization holography
A technique used to store wavefront information on thin polarization information-recordable materials by controlling the...
micro-LED
Micro-LED (micro-light-emitting diode) refers to a technology that involves the use of very small light-emitting diodes to...
embedded vision
Embedded vision refers to the integration of computer vision technologies into various embedded systems, devices, or...
electron-gun system
An electron-gun system is an assembly used to generate and control a focused beam of electrons. Electron guns find...
exposure meter
An instrument used to measure the light from a scene to be photographed and to indicate the camera lens and shutter settings...
phototoxicity
Phototoxicity refers to the harmful effects caused by exposure to light, particularly intense or ultraviolet (UV) light, on...
quantum well
A quantum well is a structure in quantum mechanics that confines particles, such as electrons or holes, in one spatial...
laser output
The laser output refers to the generated and emitted light produced by a laser system. This output is characterized by...
flip chip
An optical switch that controls conduction paths into and out of a junction in fiber optic and integrated optical circuits.
feedback compensation
The placement of a device or an additional circuit into a feedback control system to improve its response in relation to a...
optical coatings
Optical coatings are thin layers of materials applied to optical components, such as lenses, mirrors, filters, and prisms,...
thermoplastic recording device
A display device having a thermoplastic film as the control layer medium. The film, moving from a playoff reel, is scanned...
epitaxial
Epitaxial refers to the growth of a crystalline layer on a crystalline substrate in such a way that the orientation of the...
fiber optic spectrometer
A fiber optic spectrometer is a device used for measuring the spectral content of light. It utilizes optical fibers to...
Mach-Zehnder interferometer
A Mach-Zehnder interferometer is an optical device used to measure the phase difference between two collimated beams of...
variable-speed scanning
A scanning technique in which the optical density of the film being scanned controls the speed of deflection of the scanning...
Pockels cell
A Pockels cell, also known as an electro-optic modulator, is an optical device used to control the polarization of light by...
edge-emitting LED
An edge-emitting light-emitting diode is a type of LED structure where light emission occurs primarily along the edge of the...
Nichols radiometer
An instrument devised by Nichols and Hull for use in the measurement of radiation pressure. The device has two small...
Wehnelt cylinder
Also known as cathode-ray tube grid or shield. A cylindrically shaped electrode that, containing the cathode of a...
photocoagulator
An optical medical instrument that uses an intense, precisely focused beam of light to stop weakened blood vessels from...
optical transform image modulation
A technique for detecting and measuring atmospheric pollution, in which an oscillating mirror directs half the incoming...
servomotor
A type of motor that acts as the control element in a servomechanism. It is powered by an amplifier circuit and drives the...
spatial light interference microscopy
Spatial light interference microscopy (SLIM) is an optical microscopy technique that belongs to the category of quantitative...
automated optical inspection
Automated optical inspection (AOI) is a technology used in manufacturing processes, particularly in electronics, to...
diffractive optics
Optical elements that use diffraction to control wavefronts. Diffractive optical elements include diffraction gratings,...
remote inspection
Remote inspection refers to the process of inspecting, evaluating, or monitoring assets, equipment, infrastructure, or...
directed energy
Directed energy refers to a type of energy that is emitted and transferred in a controlled direction. The term is often...
thermal dissociation
A technique for detecting free radicals by their electronic spectra. The material to be studied is placed in a...
diffraction efficiency
Diffraction efficiency is a measure of how effectively a diffractive optical element (DOE) or diffraction grating directs...
prism
A prism is a geometric optical element with flat, polished surfaces that refract light. It is typically a solid, transparent...
extreme ultraviolet
Extreme ultraviolet (EUV) refers to a specific range of electromagnetic radiation in the ultraviolet part of the spectrum....
waveguide
A waveguide is a physical structure or device that is designed to confine and guide electromagnetic waves, such as radio...
electron optics
The control of free electron movement through the use of electrical or magnetic fields, and use of this electron movement in...
synchronous transmission
A mode of transmission whereby the sending and receiving stations operate continuously at a fixed relationship of phase and...
carrier injection
Carrier injection refers to the process of introducing charge carriers (either electrons or holes) into a semiconductor...
optofluidics
Optofluidics is an interdisciplinary field that combines principles from optics and fluidics to create devices and systems...
grating beamsplitter
A grating beamsplitter is an optical device that utilizes the principles of diffraction to split a beam of light into...
computer numerically controlled grinding
Computer numerically controlled (CNC) grinding is a manufacturing process that utilizes computerized controls and precision...
Nernst glower
A Nernst glower, also known simply as a Nernst lamp or Nernst filament, is a type of incandescent lamp or radiant heater...
active element
Component that is externally controlled via electronic or photon signal.
shutter
A mechanical or electronic device used to control the amount of time that a light-sensitive material is exposed to radiation.
glass annealing furnace
A furnace, generally electrically heated, with a control system capable of following a cam by which the temperature can be...
optical filter
An optical filter is a device that selectively transmits or blocks specific wavelengths, or colors, of light. Optical...
micro-ring resonator
A micro-ring resonator is a compact optical device that utilizes the resonant behavior of light within a small ring-shaped...
CD/I
A technical specification for a consumer product drawn up by Sony and Philips. CD/I combines audio, video and text recorded...
volumetric imaging
Volumetric imaging refers to the capture, visualization, and analysis of three-dimensional (3D) information from a volume of...
sunlight recorder
An instrument consisting essentially of a photoelectric cell filtered to respond to a specified wavelength region, an...
unstable resonator
A resonator often used for mode control in Fresnel number laser cavities that is highly vulnerable to extremely weak...
flat machine
A polishing machine designed to permit adjustment of the polisher speed and motion for the control of flat surfaces.
accelerometer
An accelerometer is a sensor or transducer that measures the rate of change of velocity of an object, or in simpler terms,...
image intensifier
An image intensifier, also known as an image intensification tube or image intensification device, is a specialized...
fiber optic guided missile
A weapon launched from a ground-based platform and controlled by a two-way fiber optic data link. The fiber is payed out...
injection locking
The use of two lasers as a master-slave pair in order to control frequency and prevent chirp. When light from the master is...
fiber-coupled photoconductive antenna
A fiber-coupled photoconductive antenna (FCPA) is a type of optoelectronic device that combines a photoconductive antenna...
infrared light source
An infrared light source is a device that emits light in the infrared spectrum, which lies beyond the visible spectrum of...
near-infrared camera
A near-infrared (NIR) camera is an imaging device designed to capture images in the near-infrared region of the...
self-phase modulation
Self-phase modulation (SPM) is a nonlinear optical phenomenon that occurs when an intense laser beam passes through a...
dispersion
Dispersion refers to the phenomenon where different wavelengths (colors) of light travel at different speeds when passing...
modulated grating hologram
A computer-generated, phase-and-amplitude, off-axis hologram made by a multi-exposure technique that uses three computer...
zero-order transmission grating
A polyethylene grating that transmits the long wavelengths and diffracts shorter wavelengths in controlled directions.
metamaterial
Metamaterials are artificial materials engineered to have properties not found in naturally occurring substances. These...
polymerase chain reaction
The polymerase chain reaction (PCR) is a widely used molecular biology technique used to amplify a specific segment of DNA...
nanopositioning
Nanopositioning refers to the precise and controlled movement or manipulation of objects or components at the nanometer...
medical lasers
Medical lasers are devices that produce intense beams of light with specific characteristics and properties, which are used...
gain-switching
Gain-switching is a technique used in lasers to generate short pulses of light by modulating the gain of the laser medium....
signal-induced noise
Noise generated in the flow of current in the photomultiplier, produced by the intentional or controlled application of...
system on chip
Abbreviated SoC. A single chip containing all the electronic circuits required for a complete, working product. SoCs are...
CoaXPress
CoaXPress (CoaXPress or CXP) is a standardized digital interface and communication protocol used primarily in machine vision...
interference filter
A filter that controls the spectral composition of transmitted energy partially by the effects of interference. Frequently,...
neutral density coating
A coating applied to a neutral density glass that is designed to reduce the amount of light evenly across the transmitted...
second-harmonic generation
Second-harmonic generation (SHG) is a nonlinear optical process that occurs when two photons with the same frequency combine...
thermography
Thermography is a technique that involves the use of an infrared imaging device, called a thermal camera or infrared camera,...
CMOS image sensor
A CMOS image sensor, short for complementary metal-oxide-semiconductor image sensor, is a type of semiconductor device used...
matrix-controlled display
A display that is formed in an X-Y manner; i.e., two inputs allow control of X2 elements.
image motion compensation
The active control of various aspects (optical element position, airspace thickness, etc.) of an optical system that...
attosecond photonics sources
Attosecond photonics sources refer to devices or systems that generate extremely short pulses of light on the order of...
thin-film coating
Thin-film coatings are layers of material applied to the surface of an object or substrate, typically to modify its optical,...
thin film
A thin layer of a substance deposited on an insulating base in a vacuum by a microelectronic process. Thin films are most...
q-switched operation
Q-switched operation, or q-switching, is a technique used in lasers to produce short and intense pulses of light. The term...
phase-locked loop
A circuit that uses feedback to synchronize the phase of a voltage-controlled oscillator with the phase of an incoming or...
auto-iris lens
A device for automatic exposure control in which a motor-driven diaphragm adjusts the aperture in response to a signal from...
liquid crystal on silicon
Liquid crystal on silicon (LCoS) is a display technology that combines liquid crystal materials with silicon-based...
linear positioning stage
A linear positioning stage, also known as a linear stage or translation stage, is a precision mechanical device used to...
multiple instruction/multiple data
A computer architecture used in parallel processing whereby all the processing elements are operating under their own local...
electromagnon
An electromagnon is a quasiparticle excitation that combines aspects of both magnetism and electric polarization in a...
phage
A phage, short for bacteriophage, is a type of virus that infects and replicates within bacteria. Phages are composed of...
laser optics
Laser optics refers to a broad category of optical components and systems designed for manipulating and controlling laser...
optical glass
Optical glass refers to a type of glass specifically engineered and manufactured for use in optical components and systems,...
fused quartz and silica
Fused quartz and silica are closely related materials, both composed primarily of silicon dioxide (SiO2), but they are...
soliton laser
A color center laser whose output is coupled to an external control laser cavity and then fed back to the main laser cavity...
particle acceleration
Particle acceleration refers to the process by which charged particles, such as electrons or protons, gain kinetic energy...
laser annealing
Laser annealing is a process that involves using a laser beam to heat and modify the microstructure of a material, typically...
semiconductor
A semiconductor is a type of material that has electrical conductivity between that of a conductor and an insulator. In...
STED microscopy
STED microscopy, or stimulated emission depletion microscopy, is a superresolution imaging technique in fluorescence...

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