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ANU Dictionary Terms

ultrasonic
Ultrasonic refers to sound waves with frequencies higher than the upper audible limit of human hearing, typically above 20,000 Hz. These waves are termed ultrasonic because they are beyond the range of frequencies that the human ear can perceive....
selective laser melting
Selective laser melting (SLM) is an additive manufacturing (AM) or 3D printing technology that belongs to the powder bed...
laser texturing
Laser texturing is a manufacturing process that involves using a laser beam to selectively modify the surface of a material,...
Digital Imaging and Communications in Medicine
Digital Imaging and Communications in Medicine (DICOM) is an international standard for medical imaging created by both the...
sputtering equipment
Sputtering equipment is machinery used in the process of physical vapor deposition (PVD), specifically sputtering....
computer-integrated manufacturing
The use of computer systems for monitoring and controlling industrial production.
3D printing
3D printing, also known as additive manufacturing (AM), is a manufacturing process that builds three-dimensional objects...
laser sintering
Laser sintering is an additive manufacturing (AM) or 3D printing technology that involves using a laser to selectively fuse...
alphanumeric display
A luminous display of numbers and the letters of the alphabet.
lithography
Lithography is a key process used in microfabrication and semiconductor manufacturing to create intricate patterns on the...
organic light-emitting diode
An organic light-emitting diode (OLED) is a type of light-emitting diode (LED) technology that utilizes organic compounds to...
substrate
A substrate refers to a material or surface upon which another material or process is applied or deposited. In various...
stibine gas
The purest gas source of antimony, which is used in the manufacture of compound semiconductors for IR sensors and...
speckle effect
In laser systems, the granular effect that is noted when observing the expanded cross section of a laser beam.
laser powder bed fusion
Laser powder bed fusion (LPBF) is a type of additive manufacturing (AM) or 3D printing technology that uses a high-power...
extreme ultraviolet
Extreme ultraviolet (EUV) refers to a specific range of electromagnetic radiation in the ultraviolet part of the spectrum....
two-photon polymerization
Two-photon polymerization (TPP) is a technique used in additive manufacturing, specifically in the field of 3D printing. It...
custom optic
A custom optic refers to an optical component that is designed, manufactured, and tailored to meet specific requirements or...
probe card
A probe card is a testing device used in the semiconductor manufacturing industry to evaluate and test the electrical...
optical design software
Optical design software refers to specialized computer programs used by optical engineers, physicists, and designers to...
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...
photomask
A photomask, also known simply as a mask or reticle, is a key component in the photolithography process used in...
interferometer
An instrument that employs the interference of lightwaves to measure the accuracy of optical surfaces; it can measure a...
metrology
Metrology is the science and practice of measurement. It encompasses the theoretical and practical aspects of measurement,...
silicon carbide light-emitting diodes
Silicon carbide (SiC) light-emitting diodes (LEDs) are semiconductor devices that emit light when an electric current is...
fiber distributed data interface
A standard for fiber optic data transmission systems being developed by the American National Standards Institute (ANSI) and...
photonics contract manufacturing
Photonics contract manufacturing refers to the outsourcing of the production of photonics-related components, devices, or...
automated optical inspection
Automated optical inspection (AOI) is a technology used in manufacturing processes, particularly in electronics, to...
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...
freeform optics
Freeform optics refers to the design and fabrication of optical surfaces that do not follow traditional symmetric shapes,...
generating
A rapid roughing process for the quick removal of glass, the first step in manufacture of a curved lens surface. It is...
ultraviolet fiber optics
Ultraviolet (UV) fiber optics refers to optical fibers that are designed and optimized for the transmission of ultraviolet...
sapphire
Sapphire refers to a crystalline form of aluminum oxide (Al2O3) that is used in various optical and photonic applications...
tolerancing
The determination of the degree to which a manufactured component can deviate from its ideal specifications of material and...
GaAlAs laser
A GaAlAs laser is a type of semiconductor laser diode that emits light in the near-infrared region of the electromagnetic...
deep learning
Deep learning is a subset of machine learning that involves the use of artificial neural networks to model and solve complex...
computer numerically controlled grinding
Computer numerically controlled (CNC) grinding is a manufacturing process that utilizes computerized controls and precision...
die bonding
Die bonding is a critical process in semiconductor manufacturing and microelectronics assembly, where a semiconductor die or...
vacuum chamber
A vacuum chamber is a sealed enclosure from which air and other gases are removed to create a low-pressure environment,...
2D profile sensor
A 2D profile sensor is a type of sensor used in various industrial and technological applications to measure and capture...
flexible display
A flexible display refers to a type of electronic visual display that is designed to be bendable, foldable, or rollable,...
CoaXPress
CoaXPress (CoaXPress or CXP) is a standardized digital interface and communication protocol used primarily in machine vision...
nanopositioning
Nanopositioning refers to the precise and controlled movement or manipulation of objects or components at the nanometer...
optical glass
Optical glass refers to a type of glass specifically engineered and manufactured for use in optical components and systems,...
Fizeau fringes
Fizeau fringes are interference fringes observed in an interferometer, specifically in a Fizeau interferometer. The Fizeau...
absorption lens
An optical lens manufactured to control the transmission of light over a specified wavelength range. Low absorption lenses...
GRIN lens
A GRIN (gradient index) lens is a type of optical lens that utilizes a gradient in refractive index across its volume rather...
micro-LED
Micro-LED (micro-light-emitting diode) refers to a technology that involves the use of very small light-emitting diodes to...
laser speckle
Sparkling granular pattern that is observed when an object diffusely reflects coincident laser light. Speckle appears as an...
linear positioning stage
A linear positioning stage, also known as a linear stage or translation stage, is a precision mechanical device used to...
internet of things
The internet of things (IoT) refers to a network of interconnected physical devices, vehicles, appliances, and other objects...
PLZT
A transparent lead-lanthanum zirconate titanate ceramic with optical qualities that can be controlled by applying voltages...
alexandrite lasers
An alexandrite laser is a solid-state laser that utilizes a synthetic crystal made from the rare earth element alexandrite...
microcircuit manufacturing
The formation of transistors, diodes, capacitors, resistors and other electronic elements directly on a flake of silicon by...
laser ablation
Laser ablation is a process that involves the removal or erosion of material from a target surface using laser energy. This...
microbending
In optical fiber, sharp but microscopic curvatures that create local axial displacements of a few microns and spatial...
fish-eye lens
A type of wide-angle lens that has an angular field above 140° and that exhibits barrel distortion. The most commonly...
proof stressing
A means of testing the strength of optical fibers to ensure reliability, by applying stress to the fiber so that any flaws...
motion controller
In optics, a motion controller refers to a device or system that precisely controls the movement of optical components, such...
photolithography
Photolithography is a key process in the manufacturing of semiconductor devices, integrated circuits, and...
optical barcode reader
An optical barcode reader, commonly known as a barcode scanner, is a device that uses optical technology to capture and...
machine vision
Machine vision, also known as computer vision or computer sight, refers to the technology that enables machines, typically...
Manufacturing Automation Protocol
A computerized token-passing local area network (LAN) configuration adopted by General Motors for real time control over the...
optical cable assembly
An optical cable that is connector terminated. Generally, an optical cable that has been terminated by a manufacturer and is...
near-infrared camera
A near-infrared (NIR) camera is an imaging device designed to capture images in the near-infrared region of the...
light-emitting diode
An LED, or light emitting diode, is a semiconductor device that emits light when an electric current passes through it. LEDs...
hot extrusion
A method of manufacturing polycrystalline infrared-transmitting optical fiber by heating a single halide crystal billet and...
point cloud
A point cloud is a set of data points in a three-dimensional coordinate system, where each point represents a specific...
diamond turning
Diamond turning, also known as diamond machining or diamond cutting, is a precision machining process used to produce...
laser diode module
A laser diode module is a compact device that incorporates a laser diode, optics, and often other components into a single...
colorimeter
A colorimeter is a device used to measure and quantify the color characteristics of an object or a light source. It provides...
plastic optics
Plastic optics refers to optical components or systems that are made from transparent plastic materials, as opposed to...
epitaxial deposition
Epitaxial deposition is a process used in semiconductor manufacturing and materials science to grow a thin crystalline...
telephotometer
An instrument used to measure the luminance (brightness) of a distant object. The object is viewed through a small...
machine vision system
A machine vision system is an integrated combination of hardware and software components designed to capture, process, and...
machine vision lighting
Machine vision lighting refers to the use of specific lighting techniques and equipment in the field of machine vision,...
sapphire crystal
Sapphire crystal refers to a transparent, single-crystal form of aluminum oxide (Al2O3) known as corundum. It is one of the...
hyperspectral resolution
Hyperspectral resolution refers to the level of detail or granularity in the spectral information captured by a...
line scan
Line scan refers to a method of capturing images or data by scanning a single line at a time, as opposed to capturing the...
step-and-repeat camera
A type of camera that has scales or other arrangements by which successive exposures can be lined up and equally spaced on a...
optical testing instrument
An optical testing instrument is a device or system used to evaluate and measure the performance, quality, and...
CID camera
CID, or charge injection device, camera refers to a type of imaging device that utilizes a specific kind of solid-state...
phase mask
In optics and photolithography, a phase mask refers to a device that modifies the phase of light waves passing through it....
integrated photonics
Integrated photonics is a field of study and technology that involves the integration of optical components, such as lasers,...
volumetric imaging
Volumetric imaging refers to the capture, visualization, and analysis of three-dimensional (3D) information from a volume of...
gallium nitride
Gallium nitride (GaN) is a compound made up of gallium (Ga) and nitrogen (N). It is a wide-bandgap semiconductor material...
laser drill
High power laser ablation device that by pulsed operation produces holes of controllable dimension on the scale of microns....
piezoelectric motion systems
Piezoelectric motion systems are mechanical systems that utilize piezoelectric materials to generate controlled motion or...
deep ultraviolet
Deep ultraviolet (DUV or deep-UV) refers to a specific range of ultraviolet light with shorter wavelengths than those in the...
epitaxy
A well controlled thin films technique for growing films with good crystal structure in ultra high vacuum environments at...
epitaxial
Epitaxial refers to the growth of a crystalline layer on a crystalline substrate in such a way that the orientation of the...
custom lapping and polishing services
Custom lapping and polishing services involve specialized processes used to improve the surface finish and dimensional...
pixel binning
Pixel binning, also known as pixel merging or pixel combining, is a technique used in digital imaging and camera technology....
lens blank
A lens blank is a piece of optical material in a raw, unfinished state, typically in the form of a disk or block, from which...
alphanumeric reader
An instrument that reads alphabetic, numerical and special characters by means of a photosensor that measures the varying...
chalcogenide
Chalcogenide refers to a class of compounds containing elements from group 16 of the periodic table, which includes sulfur...
optical manufacturing tools and machinery
Optical manufacturing tools and machinery encompass a wide range of equipment, instruments, and systems used in the...
raw glass
A term that describes any state of glass before its manufacture as an element.
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...
chemical vapor deposition equipment
Chemical vapor deposition (CVD) equipment refers to a class of specialized apparatus used in the process of chemical vapor...
embedded vision
Embedded vision refers to the integration of computer vision technologies into various embedded systems, devices, or...
liquid crystal display
An alphanumeric display formed by a layer of liquid crystal material sandwiched between two sheets of glass; a transparent...
Munsell notation
Alphanumerical description of color according to Munsell hue, value and chroma.
character read-out system
A photoelectrically controlled, alphanumeric reading device that converts characters to audible or sorting signals which can...
freeform mirrors
Freeform mirrors refer to reflective optical components that deviate from traditional symmetric or rotationally symmetric...
spatial resolution
Spatial resolution refers to the level of detail or granularity in an image or a spatial dataset. It is a measure of the...
fused quartz and silica
Fused quartz and silica are closely related materials, both composed primarily of silicon dioxide (SiO2), but they are...
augmented reality
Augmented reality (AR) is a technology that integrates digital information, typically in the form of computer-generated...
SMA connector
The fiber optic connector developed and manufactured by Amphenol Fiber Optic Products.
pyramid error
Pyramid error in optics refers to an aberration in the shape of an optical surface, particularly in the context of mirrors....
Rockwell hardness
Rockwell hardness (Rc) refers to a method for measuring the hardness of a material, primarily metals, using an indentation...
aspheric lens
An aspheric lens is a type of lens whose surface profiles deviate from the traditional spherical shape. Unlike spherical...
fiber curl
A property of optical fiber that results from thermal stresses during manufacturing and is defined as the amount of...
solar simulator
A solar simulator is a device used to replicate the spectrum and intensity of sunlight in a controlled environment for...
digital twin
A digital twin refers to a virtual representation or digital counterpart of a physical object, system, or process. This...
optical fiber optic switches
Optical fiber optic switches are devices used in optical fiber communication systems to selectively route optical signals...
process control
The collection and analysis of data relevant to monitoring the rate and quality of industrial production, either...
photoresist
Photoresist is a light-sensitive material used in photolithography processes, particularly in the fabrication of...
mirror blank
A mirror blank refers to the initial piece of material from which a mirror is made. It is typically a flat or slightly...
GaN-based LEDs
Gallium nitride-based light-emitting diodes (GaN-based LEDs) are semiconductor devices that emit light when an electric...
lab-on-a-chip
A lab-on-a-chip (LOC) is a miniaturized device that integrates various laboratory functions and capabilities onto a single,...
alphanumeric generator
In computer graphics, a character generator that produces alphabetical and numerical characters with some punctuation and...
fluorozirconate
A highly stable heavy-metal fluoride glass made from the fluorides of zirconium, barium, lanthanum, aluminum and sodium.
flow chemistry
Flow chemistry, also known as continuous-flow chemistry, is a chemical manufacturing process where reactions take place in a...
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....
turbidity
Turbidity is a measure of the cloudiness or haziness of a fluid caused by the presence of suspended particles. These...
sapphire optical fiber
Sapphire optical fiber is a type of optical fiber made from single-crystal sapphire, which is a form of aluminum oxide...
electron-gun system
An electron-gun system is an assembly used to generate and control a focused beam of electrons. Electron guns find...
minimum object distance
Minimum object distance, often abbreviated as MOD, refers to the closest distance at which a camera lens or optical system...
brightness control
The manual shifting bias control of a cathode-ray tube that determines both the average brightness and the contrast of a...
strain
In optics, the mechanical tension, compression or shear in optical glass due to internal stress caused by improper cooling...
laser peening
Laser peening is a surface enhancement technique used to improve the mechanical properties of materials, particularly...
infrared light-emitting diode
An infrared light-emitting diode (IR LED) is a semiconductor device that emits infrared light when an electric current...
laser annealing
Laser annealing is a process that involves using a laser beam to heat and modify the microstructure of a material, typically...
optical design and engineering services
Optical design and engineering services involve the development, customization, and optimization of optical systems and...
excimer laser
An excimer laser is a type of ultraviolet laser that emits short pulses of light in the ultraviolet spectrum. The term...
laser
A laser, which stands for "light amplification by stimulated emission of radiation," is a device that produces coherent and...
striae
An imperfection in optical glass consisting of a distinct streak of transparent material having a slightly different...
additive manufacturing
Additive manufacturing (AM), also known as 3D printing, is a manufacturing process that involves creating three-dimensional...
wafer
In the context of electronics and semiconductor manufacturing, a wafer refers to a thin, flat disk or substrate made of a...
scanning electron microscope
A scanning electron microscope (SEM) is a powerful imaging instrument used in scientific research, materials...
planform bonding
A manufacturing process used to construct substrates for large optical components. Used with IR materials, planform bonding...
complementary metal-oxide semiconductor
Complementary metal-oxide-semiconductor (CMOS) refers to a technology used in the fabrication of integrated circuits,...
beam profiling
Beam profiling is a technique used to characterize and analyze the spatial intensity distribution of a laser beam. It...
transmitter central wavelength range
The central wavelength range of a transmitter based on the worst-case scenarios of temperature, manufacturing and other...
prism
A prism is a geometric optical element with flat, polished surfaces that refract light. It is typically a solid, transparent...
near-infrared spectrometer
A near-infrared (NIR) spectrometer is an analytical instrument used to measure the absorption, transmission, or reflection...
quantum dot light-emitting diode
Quantum dot light-emitting diode (QLED) is a display technology that utilizes quantum dots, which are semiconductor...
ellipsometry
Ellipsometry is an optical technique used to characterize the properties of thin films and surfaces. It is based on the...
GigE
GigE, short for gigabit Ethernet, refers to a standard for high-speed Ethernet communication, capable of transmitting data...
magnetorheological finishing
Magnetorheological finishing (MRF) is a precision optics polishing technique used for shaping and finishing optical surfaces...
laser marking
Laser marking is a process in which a laser beam is used to mark or engrave a surface by altering its properties or...
diffuse reflectance spectroscopy
Diffuse reflectance spectroscopy (DRS) is a nondestructive analytical technique used to investigate the optical properties...
fiber optic preform
A fiber optic preform is a cylindrical glass rod or tube used as the starting material for manufacturing optical fibers. It...
molded lens
A molded lens is an optical lens manufactured using a molding process, typically involving the shaping of a material, such...
thin-film deposition equipment
Thin-film deposition equipment refers to machinery and tools used in the process of depositing thin layers of material onto...
panoramic telescope
A telescope so manufactured that the image remains erect and the position of the eyepiece is unchanged as the line of sight...
modified chemical vapor deposition
Modified chemical vapor deposition (MCVD) is a technique used in the fabrication of optical fibers. It is a specialized form...
modulation transfer function analysis/measurement equipment
MTF analysis/measurement equipment refers to instruments and tools used to measure and analyze the modulation transfer...
pyrex
Trade name for a type of borosilicate glass manufactured by Corning Glass Works, noted for its low coefficient of thermal...
dewetting
Dewetting is a phenomenon in materials science and physics where a thin film or coating spontaneously undergoes a process of...
grinding
The process in the manufacture of an optical system that gives it the required geometric shape.
rare-earth elements
Rare-earth elements (REEs) are a group of seventeen chemical elements found in the Earth's crust, characterized by their...
sputtering target
A sputtering target is a solid material used in the process of physical vapor deposition (PVD), specifically sputtering....
cleaning equipment
In optics, degreasers or ultrasonic arrangements used for removing pitch, cement or polishing material from lenses during...
optical comparator
Typically used for the examination of manufactured or engineered parts, an optical gauging device, in which a backlight is...
etching
The engraving of a surface by acid, acid fumes or a tool; a process extensively used in the manufacture of reticles.
flow cytometry
Flow cytometry is a powerful technique used in biology and medicine for the quantitative analysis of the physical and...
epitaxial equipment
Epitaxial equipment refers to a set of specialized tools and systems used in the process of epitaxy, which is the growth of...
off-axis paraboloid and ellipsoid mirror
Off-axis paraboloid and ellipsoid mirrors are specialized optical components used in various optical systems, particularly...
optical figure
The amount by which an optical surface deviates from its ideal design value, expressed in wavelengths of light. Optical...
metallographic polishing machine
A small optical polishing machine intended for polishing the surface of a metal specimen before etching for examination...
rare-earth type glass
Optical glasses containing the oxides of rare earths such as lanthanum to impart a very high refractive index combined with...
infrared lens
An infrared lens is an optical component specifically designed and optimized for transmitting, focusing, or manipulating...
thermography
Thermography is a technique that involves the use of an infrared imaging device, called a thermal camera or infrared camera,...
photonic integrated circuit
A photonic integrated circuit (PIC) is a compact and integrated device that incorporates multiple photonic components and...
micro-robotics
Micro-robotics refers to the field of robotics that involves the design, development, and application of miniature robotic...
electrowetting display
An electrowetting display (EWD) is a type of electronic display technology that utilizes the principles of electrowetting to...
hypersensitizing
With respect to photography, the process used to increase the effective speed of an emulsion between manufacture and...

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