Extreme ultraviolet (EUV) refers to a specific range of electromagnetic radiation in the ultraviolet part of the spectrum. EUV radiation has wavelengths between 10 and 124 nanometers, which corresponds to frequencies in the range of approximately...

An old name for the rotating arm moving about an axis of rotation over a divided circle used to measure angles. Now the term...

A variation of the atomic force microscope that operates by scanning a tiny ferromagnetic probe (or a magnetized tip) over a...

The production of rough glass lens blanks that are pressed while red-hot to the approximate size and shape of the finished...

Flow chemistry, also known as continuous-flow chemistry, is a chemical manufacturing process where reactions take place in a...

One of the types of change in the energy levels of molecules or atoms in a laser that can result in lasing action. Because...

An instrument designed to give precise and rapid detection of changes in tumor growth as well as the location of small...

The process of creating a large, panoramic image by aligning and joining a set of smaller images. Image processing is used...

A technique used to store wavefront information on thin polarization information-recordable materials by controlling the...

Optical tweezers refer to a scientific instrument that uses the pressure of laser light to trap and manipulate microscopic...

The underexposure caused by the diffraction of light passing through small openings spaced closely together in masks used in...

A display format consisting of small light-emitting elements arranged as a two-dimensional array. Various elements are...

A device small enough to be held in a hand that uses a magnifying lens and a translucent back to permit the viewing of...

The area of optics that deals with the propagation of Gaussian laser beams in free space, or any general medium - i.e....

A technique for reducing data processing requirements by electronically defining only a small portion of the image to be...

A type of photoelectric proximity mode sensing incorporating a lens system to focus the light from the emitter in a small,...

Observed phenomenon of a small developed image with higher density than a larger image because of variation in photographic...

Best point of focus for an image in a beam of light at the smallest cross section of the beam.

A detector array refers to a collection of individual detector elements arranged in a two-dimensional grid or matrix format....

A technique based on the principles of laser trapping and used to manipulate the position of small particles by gradually...

An imaging system designed to highlight small deviations in a planar reflective object such as a mirror. The system can be...

The smallest object that may be seen, measured in terms of the angle subtended by the object measured at the eye. Also...

An aspheric mirror is an optical mirror surface that deviates from the shape of a perfect sphere, having a non-spherical...

A laser skin-resurfacing method that creates microscopic thermal wounds referred to as microscopic treatment zones (MTZs),...

A type of eyepiece, or the modification of an eyepiece, in which a small hole, without a lens, functions as the eye lens;...

An interferometric method for describing the surface shape of large coated or uncoated optical flats. The procedure uses a...

A hologram having an image scale that is orders of magnitude smaller than microfiche images.

An instrument capable of precise measurements of the Earth's gravity. This permits the detection of small changes in local...

Carrier injection refers to the process of introducing charge carriers (either electrons or holes) into a semiconductor...

Techniques used in biology to produce microradiographs of cells, tissues or small organisms.

A source that attempts to create the characteristics of an ideal blackbody. It consists of a cavity, generally spherical,...

A thermal radiation detector consisting of a small cell with a blackened plastic front face that bulges slightly when heat...

An LED (light-emitting diode) is a semiconductor device that emits light when an electric current passes through it. LEDs...

A photovoltaic cell, commonly known as a solar cell, is a semiconductor device that directly converts light energy into...

A pixel, short for "picture element," is the smallest controllable element of a digital image or display. It is a...

Consists of a pair of radio telescopes concentrated on a single celestial object. This technique creates a single radio...

Microscopy is a scientific technique that involves the use of microscopes to observe and study objects that are too small to...

A small incandescent lamp whose intense beam is focused on the optical soundtrack of a motion picture film. The soundtrack...

A beam shaper is an optical device or system designed to modify the spatial profile or intensity distribution of a laser or...

In a reflecting telescope, the obstruction of the primary mirror by a secondary mirror which blocks a small amount of the...

A fiber optic gyroscope (FOG) is a type of gyroscope that uses the interference of light waves to detect changes in...

Referred to as SWCNTs, these cylindrical nanostructures composed of a folded sheet of graphene can be used as near-infrared...

An aptamer is a short, single-stranded DNA or RNA molecule that can bind to a specific target molecule with high affinity...

An optical system that rapidly alternates two similar pictures or scenes to permit the detection of small dissimilarities...

Laser annealing is a process that involves using a laser beam to heat and modify the microstructure of a material, typically...

A specialized spectrophotometer for use through a microscope on very small areas of an object.

In a lens, the square of the radius of its aperture divided by the product of the focal length and the wavelength. It...

In the context of optical materials, the term "impurity level" refers to the presence of foreign atoms or molecules within...

A system used to measure very small displacement by electrical means.

The measurement of the intensity of spectral lines by the examination of a very small area under a microscope and the...

The combination of two or more different small-molecule monomers into a polymer.

The formation of a hologram by single reference-beam interferences with waves that are diffracted or scattered from a small...

The effect by which sufficiently small particles will scatter blue light at right angles to the incident beam. This...

A tiny lens (as small as 100 µm in diameter) used to focus light on charge-coupled devices, formed by heating a...

Fusion ignition refers to the point in a controlled nuclear fusion reaction where the energy released by the fusion...

A microlens array is a grid-like structure composed of numerous small lenses, typically arranged in a regular pattern. Each...

A blackbody source, often simply referred to as a blackbody, is a theoretical or practical physical object that absorbs all...

Hyperspectral resolution refers to the level of detail or granularity in the spectral information captured by a...

The term perovskite refers to a specific crystal structure commonly found in various materials. Perovskite structures have a...

A calcium indicator is a molecule that is sensitive to changes in calcium ion (Ca2+) concentrations in biological systems....

An instrument capable of measuring the transmitted or reflected luminance from a very small area seen under a microscope....

A two-mirror lens design used in astronomical telescopes, the primary being a parabola, the secondary a smaller hyperbola....

A telescopic light-sensing meter used to measure illumination levels of small regions at a distance of many feet; it is used...

An analytical technique used to determine the nature of extremely small samples by forming the x-ray spectrum of the samples...

Nanoparticle photonic resonator absorption microscopy is a microscopy technique that combines the principles of photonic...

A term used to denote a concave surface having too long a radius of curvature. That is, its negative power is too small or...

A GRIN (gradient index) lens is a type of optical lens that utilizes a gradient in refractive index across its volume rather...

In a thermal imaging system, the smallest change in blackbody equivalent temperature that can be detected clearly by the...

A tool made by imbedding small particles of diamond in the working edge. In the optical field, the most commonly used...

A dark-field microscope used to view extremely small objects. These objects are suspended in a gas or liquid in an enclosure...

Also cellulose acetate film. The emulsion layer applied to the substrate of a photographic surface. The emulsion layer is...

A material consisting of very small colorless particles imbedded in a clear glass matrix. It is available in two forms:...

An instrument used to measure the luminance (brightness) of a distant object. The object is viewed through a small...

An instrument devised by Nichols and Hull for use in the measurement of radiation pressure. The device has two small...

1. In glass, a solid inclusion having a small diameter. 2. A particular, single crystal that, after undergoing the...

A dispersion-shifted fiber (DSF) refers to a type of optical fiber designed to minimize the effects of chromatic dispersion,...

A metabolite is any small molecule that is a product of metabolism, the chemical processes that occur within living...

A technique used in photolithography of computer chips to compensate for errors caused by the proximity effect, which...

The phenomenon observed by A.H. Compton in 1923 -- that some scattered radiation possesses a longer wavelength and...

The use of atoms, molecules and molecular-scale structures to enhance existing technology and develop new materials and...

The term quantum refers to the fundamental unit or discrete amount of a physical quantity involved in interactions at the...

A camera designed to record at rates exceeding 50 fps. For frame rates up to about 500 fps, an ordinary pull-down mechanism...

A small optical polishing machine intended for polishing the surface of a metal specimen before etching for examination...

A fiber optic sensor is a device that uses optical fibers to detect and measure physical, chemical, biological, or...

A small mirror, sometimes plane and sometimes concave, attached to the rotating coil of a galvanometer to cause a spot of...

A microcomb, short for microresonator frequency comb, is a novel photonic device that generates a precise series of evenly...

1. That branch of optics that illustrates the theory in which q is substituted for sin q in Snell's law. Effective results...

A liquid crystal light valve (LCLV), also known as a spatial light modulator (SLM), is an optical device that modulates the...

A micro-ring resonator is a compact optical device that utilizes the resonant behavior of light within a small ring-shaped...

The smallest area of uniform brightness that can be seen by the eye. It is measured in terms of the solid angle subtended by...

The smallest linear diameter to which a laser or other beam of radiant energy is capable of being focused, depending on the...

A furnace used to heat glass materials. It may be a small laboratory-type furnace for small-scale experiments or large...

A semiconductor is a type of material that has electrical conductivity between that of a conductor and an insulator. In...

A grating used as a reflectance filter, particularly in the far-infrared. Small plane gratings, blazed for the wavelength of...

1. Also known as near-field diffraction. The field of radiation sent through an aperture in an absorbing screen at large...

Mie scattering, named after the German physicist Gustav Mie, refers to the scattering of electromagnetic radiation (such as...

A type of ultrasensitive laser spectroscopy that can detect quantities as small as a single atom of some substances and that...

A lock-in amplifier is a specialized electronic instrument used to extract and measure small signals embedded in noise or...

Streaks of dense seeds with accompanying small bubbles.

A CubeSat is a type of miniaturized satellite characterized by its standardized size and modular design. CubeSats are...

The fundamental tool of microdensitometry, the microdensitometer is an instrument used for the precise measurement of...

The use of a krypton laser system for the measurement of small molecules aligned by an electric field, by analyzing the...

A small card (10 x 15 cm) that has been treated with a photographic emulsion to record and store the microimages of...

In semiconductor physics, the term bandgap refers to the energy range in a material where no electronic states are allowed....

A telescope with a concave paraboloidal objective mirror and a small plane (diagonal) mirror that reflects rays from the...

In visual perception, the smallest difference in illumination perceived on the average.

Use of a photoelectric receiver to sense an object's presence by detecting a small amount of the emitter's light that is...

A small section of the surface of a sensor corresponding to a single pixel in the image.

MicroRNAs (miRNAs) are a class of small, single-stranded RNA molecules, typically consisting of about 19 to 24 nucleotides,...

A device for forming at least two adjacent areas of polarized light. The angle between the directions of vibration of the...

The transmission of light by a condenser to observe either very small particles or very fine lines with a microscope.

The Weissenberg method, named after the German physicist Karl Weissenberg, is a technique used in x-ray crystallography for...

A tank with a boiling solvent at the bottom and a ring of cold piping higher up that condenses the liquid and returns it to...

A small television tube originally developed for closed-circuit television. It is about 1 inch in diameter and 5 inches...

Characteristic of optical analyses that are limited to infinitesimally small apertures. Also called first-order or Gaussian...

The use of a small ultrastable master oscillator (a diode-pumped Nd:YAG laser) to achieve single-frequency operation of a...

A form of laser output noise that is caused by thermal, mechanical, or acoustical disturbances of the cavity length. Mode...

A Mach-Zehnder interferometer is an optical device used to measure the phase difference between two collimated beams of...

Diamond turning, also known as diamond machining or diamond cutting, is a precision machining process used to produce...

Characteristic of an object so small in size or so fine in structure that it cannot be seen by the unaided eye. A...

When light is transmitted through matter, part of the light is scattered in random directions. A small part of the scattered...

A family of specialized instruments used by ophthalmologists and optometrists to study a patient's eyes and prescribe...

A fiber for which the difference between the maximum and the minimum refractive index is small, usually less than 1 percent.

A metal-semiconductor-metal (MSM) photodiode is a type of photodetector that consists of metal electrodes on a semiconductor...

1. A strainmeter capable of measuring the change in the relationship between two reference points, provided that the points...

A small bulb containing a conducting gas, an arc being formed between a metal ring and a tiny zirconium electrode near the...

In astronomy, the main lobe of an antenna pattern that has a small angular extent in two mutually perpendicular directions....

An optical element having plane-inclined surfaces. Usually the faces are inclined toward one another at very small angles....

A molecular motor refers to a nano-sized device composed of organic molecules or other small-scale components that can...

Light diffracted by a solid (usually quartz in crystal or fused form) traversed by acoustic waves. If the ultrasonic...

A blur circle refers to the out-of-focus region in an image captured by an optical system. When an object in a scene is not...

An imaging process in which the single opening of a simple pinhole camera is replaced with many openings called,...

A photographic objective that uses the thick meniscus principle to obtain its power. It is designed to photograph small...

The Shack-Hartmann wavefront sensor is an optical device used for measuring the wavefront aberrations of an optical system....

Stochastic optical reconstruction microscopy (STORM) is a superresolution microscopy technique that enables imaging of...

An approximated measure of the smallest change in color temperature detectable by the human eye, defined as the reciprocal...

A small half-shade analyzer placed in the eyepiece of a polarimeter to determine the character of the polarized light...

Light produced when a metal is bombarded with high-velocity electrons causing small amounts of the metal to vaporize and...

Spatial resolution refers to the level of detail or granularity in an image or a spatial dataset. It is a measure of the...

A lab-on-a-chip (LOC) is a miniaturized device that integrates various laboratory functions and capabilities onto a single,...

A well plate, also known as a microplate or microtiter plate, is a flat plate with multiple small wells or depressions...

A single number, defined by the computer program or the user that expresses the performance of an optical system. Also known...

A lens made from transparent plastic material. Lenses over 31/2 in. in diameter are usually machined, ground and polished....

The bending of x-rays by the regular layers of molecules in a crystal acting like a very small diffraction grating. The...

A manufacturing process used to construct substrates for large optical components. Used with IR materials, planform bonding...

The small central portion of the human retina that is responsible for providing the clearest, and most distinct aspects of...

A ring laser gyroscope (RLG) is a type of gyroscope that uses laser light to detect and measure changes in orientation. It...

A phase-modulated sensor is a type of sensor that uses modulation of the phase of a signal to measure changes in a physical...

Small clefts or fissures that penetrate the glass surface in the form of short-hooked crescents. Fire cracks result from a...

A small fiber optic endoscope used in laser surgery.

An electrowetting display (EWD) is a type of electronic display technology that utilizes the principles of electrowetting to...

Small tungsten lamp used in surgical instruments such as cystoscopes, and for other purposes where space is limited.

Micro-robotics refers to the field of robotics that involves the design, development, and application of miniature robotic...

An instrument for detecting or measuring small electric currents.

The optical phenomenon in which white light dispersed by small particles in suspension appears blue when viewed through a...

Process of synthesizing long molecular chain materials (polymers) by reaction of many small molecules (usually thousands)...

A noncrystalline, inorganic mixture of various metallic oxides fused by heating with glassifiers such as silica, or boric or...

A specific type of photographic plate designed with only a small amount of gelatin to function in the extreme ultraviolet...

Quantum confinement refers to the phenomenon in quantum mechanics where the motion of charge carriers, such as electrons or...

A screen with a reflected or transmitted light beam that is confined to a much smaller bundle than was received by the...

A lens aberration, resulting from different magnifications in the various lens zones, that occurs in that part of the image...

An optical wedge of very small angles that admits light while sealing out moisture and dirt and that may be rotated to...

Essentially, a hologram of a hologram, in which the first-generation hologram is masked with a narrow slit. During image...

Housing that resembles a small metal can for a semiconductor component, photodetector or similar device.

the photography of very close, and typically small objects with a magnification of approximately 1:1

A small television monitor that replaces the reflex viewfinder in a television camera.

An array of refractive microlenses that are round, square and hexagonal and as small as 15 µm. They are used for...

In biaxial crystals, the principal angle that bisects the smaller angle between the optic axes.

A test for spherical aberration, coma or astigmatism in which incident rays from a point source are isolated by small holes...

An instrument for measuring the brightness (luminance) of a scene. It may be a spot meter, covering an area of a degree or...

The Casimir force is a quantum phenomenon that results in an attractive force between two closely spaced uncharged...

Laser lithotripsy is a medical procedure that uses laser energy to break down or fragment stones in various parts of the...

An astronomical telescope is a type of optical instrument designed to gather and magnify light from distant celestial...

Plasmonics is a field of science and technology that focuses on the interaction between electromagnetic radiation and free...

A prism formed by dividing a Nicol prism in a plane parallel to the path of vibration of the transmitted light and taking...

The use of the photographic process to produce precision copies of an original image that are many times smaller in size....

A photon jet is a narrow, highly collimated beam of light that is formed when light interacts with small dielectric...

A breakout cable, also known as a fan-out cable or breakout assembly, is a type of cable that combines multiple individual...

An autocollimator is an optical instrument used for measuring small angular deviations with high precision. It operates on...

A small region within a single crystal where the molecules form a perfect lattice.

A small defocused Galilean telescope mounted in a hole in a door. Viewed from inside through the positive lens, a wide-angle...

A small mass spectrometer used to find leaks in a vacuum system by detecting the presence of helium. Using a magnetic...

The use of a specialized optical microscope designed to provide a more three-dimensional view of a sample. Stereomicroscopy...

A large telescope mirror fabricated from several smaller sections.

A lamp, usually incandescent, that has a very compact filament, permitting a greater concentration of emitted light, aided...

A digital camera is a device that captures and records still images or video in digital format. Unlike traditional film...

The Mills Cross telescope is a two dimensional radio telescope in which the two antenna arrays are positioned perpendicular...

The formation of an interferogram by means of two holograms on the same recording medium, often used for determining small...

A compound prism consisting of an assembly of small prisms cemented together that is used in a coincidence rangefinder to...

Nanophotonics is a branch of science and technology that explores the behavior of light on the nanometer scale, typically at...

With respect to photography, the change in the density-exposure relations, for small details of the photographic image, that...

Spectroscopy used to study the concentration, diffusion and Brownian motion of small particles suspended in a fluid by...

A device used to scan, with a small, intensely bright spot, portions of a picture surface and to transform the original...

A GaAlAs laser is a type of semiconductor laser diode that emits light in the near-infrared region of the electromagnetic...

A small handheld instrument consisting of a slit and collimator that feeds light into a small direct-vision dispersing...

A chart on paper or glass containing a series of sets of lines at progressively smaller spacing and used to ascertain the...

In image processing, a morphology operator in which a structuring element or probe of a particular shape is moved over the...

The photographic recordformed in macrophotography in which the size of the small nearby object at theimage plane is the same...

Nanopositioning refers to the precise and controlled movement or manipulation of objects or components at the nanometer...

A laser device used to establish a location or target usually for detection by an impact source e.g. missiles and guided...

An instrument for measuring the vertical angle of an object. It usually contains an accurately made protractor, a sensitive...

A wave that is guided by the interface between two different media or by a refractive index gradient in the medium. The...

Illumination of hologram facets with a beam that covers only a small portion of the hologram in order to optimize laser...

Microfluidics is a multidisciplinary field that involves the manipulation and control of very small fluid volumes, typically...

A small erect-image telescope for use as a sighting device on a rifle. The chief requirement is a long eye relief to avoid...

Photovoltaic (PV) refers to a technology that converts sunlight directly into electricity using semiconductors. The term...

Diamond turning refers to a precision machining process used to produce complex optical components, particularly lenses and...

An array of optically distinct fibers that are fused into one strand. They are used to keep the resolution efficiency of the...

Multi-axis alignment refers to the process of aligning or adjusting components or systems in multiple spatial dimensions or...

Pixel pitch refers to the distance between the centers of two adjacent pixels on a display screen or imaging sensor. It is...

A camera that consists of a concave spherical mirror with an aspheric plate situated at the center of curvature of the...

An interferometric technique for the generation of precision gratings that allows for sequential exposure of small segments...

A fiber optic cable assembly refers to a complete unit consisting of optical fibers, connectors, protective jackets, and...

An interferometer in which interference is produced between wavefronts that are sheared in the sample object by a small...

1. In relation to cathode-ray tube displays, errors in the signal's amplitude, phase or both that result in small, rapid...

The soft x-rays used in the industrial radiography of materials having too small a range of densities to produce an image...

A handheld navigational instrument used to measure the elevation angle of celestial bodies such as the sun. An image of the...

An image intensifier that consists of an evacuated tube with a large input phosphor screen at one end. The phosphor screen...

A small round mirror on the end of a handle used for viewing inside an inaccessible cavity.

Liquid marble refers to a unique form of microscale liquid encapsulation, where small droplets of liquid are coated with a...

A scientific CMOS (complementary metal-oxide-semiconductor) camera is a type of digital camera specifically designed for...

Tip-enhanced Raman scattering (TERS) is a powerful technique that combines Raman spectroscopy with the enhanced spatial...

Very small phosphor particles present on the screen of a picture tube.

A type of mosaic detector array that combines features of scanning and staring sensors by using a small rapid scanning...

A microbubble resonator is a device used in photonics and optical physics for the precise manipulation of light waves. It...

Circular dichroism (CD) is a spectroscopic technique used to study the structural characteristics of chiral (asymmetric)...

An infrared detector is a device that is used to detect and measure infrared radiation, which lies beyond the visible...

Metasurfaces are two-dimensional arrays of subwavelength-scale artificial structures, often referred to as meta-atoms or...

A device used to detect and measure small amounts of rotation. The rotating object contains a reflecting surface from which...

A type of laser used when a great amount of power is required. Avoiding the bulk of large numbers of optical lenses, this...

Dewetting is a phenomenon in materials science and physics where a thin film or coating spontaneously undergoes a process of...

A small object that behaves as a whole unit or entity in terms of it's transport and it's properties, as opposed to an...

Of evaporative coatings, a condition resulting when small chunks of material fly from the hot crucible onto the substrate...

Superresolution refers to the enhancement or improvement of the spatial resolution beyond the conventional limits imposed by...

The radiography of small objects having detail too fine to be seen by the unaided eye. The resulting negative, when...

The length of the small space within which the atmosphere exhibits coherence, particularly in relation to an observer on...

A technique for confining atoms, molecules or small particles within one or more laser beams. This can be accomplished...

A small instrument containing a picture support and a pair of magnifying lenses so arranged that the left eye sees only the...

A nanotube, also known as a nanotubule or simply a tube-like structure, is a nanoscale cylindrical structure composed of...

On a display monitor, a small, mobile rectangle, cross-hair or pointer that locates a feature in an image that is the object...

Two-photon polymerization (TPP) is a technique used in additive manufacturing, specifically in the field of 3D printing. It...

A circular optical wedge (prism of small refracting angle) mounted to be rotated in the path of light rays to divert the...

A zone plate produced by a computer and having a binary structure that can be etched into a chromium or quartz layer. It...

Minimum object distance, often abbreviated as MOD, refers to the closest distance at which a camera lens or optical system...

The point spread function (PSF) is a fundamental concept in imaging that describes the response of an imaging system to a...

STED microscopy, or stimulated emission depletion microscopy, is a superresolution imaging technique in fluorescence...

A linear image sensor is a type of solid-state electronic device used to capture and convert light into electrical signals....

Micro-LED (micro-light-emitting diode) refers to a technology that involves the use of very small light-emitting diodes to...

The combination of more than one type of small-molecule monomer into a polymer.

The use of photoetching techniques to produce small tools, parts and dies from sheet metal.

The Foucault test is performed by moving a knife edge laterally into the image of a small point source. The eye, or a...

A small low-power microscope or magnifier with a scale that is used to measure the exit pupil diameter and eye relief on...

A halogen lamp, also known as a tungsten halogen, quartz-halogen, or quartz iodine lamp, is an incandescent lamp that uses a...

A wide-angle lens is a type of camera lens that has a shorter focal length than a standard or normal lens, allowing it to...

A telescope that produces an erect image. Erection is achieved either by a lens (for a long instrument) or a prism (for a...

A galvanometer having a small mirror that is mounted on a moving element and that reflects a light beam onto a scale.

Raman spectroscopy is a technique used in analytical chemistry and physics to study vibrational, rotational, and other...

The fringes used in the Jamin interferometer and produced by light that has been internally and externally reflected by two...

The investigation of microstructures by an instrument that generates a narrow, highly collimated beam of x-rays.

A flexible fiber cable with a small diameter that transports light from the excitation laser to the target. Used in Raman...

The movement of the eye as it focuses on details of a scene. Some imaging systems mimic this movement by small, rapid...

Rayleigh scattering is a phenomenon that occurs when light waves interact with particles or molecules that are much smaller...

A device used to project a small area of light on a screen for indication.

3D printing, also known as additive manufacturing (AM), is a manufacturing process that builds three-dimensional objects...

Glass containing small quantities of neodymium oxide that is used as a filter plate in color television or as a lasing...

The smallest angle through which light is bent by an optical element or system. In a prism, the angle of deviation is a...

A small convergent lens, located between the objective and eyepiece of a microscope, that focuses an image of the upper...

Metamaterials are artificial materials engineered to have properties not found in naturally occurring substances. These...

An LED, or light emitting diode, is a semiconductor device that emits light when an electric current passes through it. LEDs...

A miniature projecting device designed to enhance and reproduce the image generated by a smaller image-forming instrument....

The compression and intensification of a laser pulse of a specific width into a smaller pulse width. A spherical cavity, in...

In optics, "mode beating" refers to an interference phenomenon that can occur in laser systems with multiple longitudinal...

The removal of the zero-order component of the Fourier spectrum distribution of an object with a small, opaque absorber or...

A device for the internal inspection of hard-to-get-at mechanical parts, such as rifle barrels, sewer pipes, oil wells, or...

A small opening or slit in a mask.

A perfectly diffusing surface; the intensity of the light emanating in a given direction from any small surface component is...

A method of heat removal in which liquid passes through small channels with high packing densities.

The smallest amount of photon energy to pass a detector window and be counted.

A microscope that allows examination of a small crystal and conveniently provides linearly polarized object and reference...

An electron lens consisting of a homogeneous axial electric field and a magnetic field used in high-quality image tubes for...

Inertial confinement fusion (ICF) is a method of achieving nuclear fusion, a process where two atomic nuclei combine to...

A small xenon-filled tube with metal electrodes fused into the ends. The gas flashes brilliantly when a condenser is...

A microdisplay is a miniature electronic display technology that is designed to project visual information onto a small...

A hyperspectral imaging camera is a sophisticated imaging device capable of capturing and processing data across a wide...

A telescope that corrects dispersion and spherical aberration through the use of one or more lenses, usually smaller than...

An early type of nonvacuum photocell consisting of a layer of copper oxide on a metallic substrate, with a thin transparent...

A fiber optic transceiver, often simply referred to as an "optical transceiver," is a device used in fiber optic...

A small telescope mounted on a tripod and free to rotate about a vertical axis. A spirit level is mounted over the telescope...

Scalar diffraction theory is a simplified approach used to describe the propagation of electromagnetic waves, particularly...

A device composed of dissimilar metals that, when welded together, develop a small voltage dependent upon the relative...

A small mass spectrometer, with a limited mass range, equipped with an analyzer to generate a cycloidal-path beam of the...

Intravital microscopy is an imaging technique used to visualize biological processes within living organisms, typically in...

An instrument used to measure the light from a scene to be photographed and to indicate the camera lens and shutter settings...

The term that represents the size of one of the many small elements into which a television image is necessarily broken down...

An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without a human pilot onboard. UAVs are remotely...

Instantaneous field of view (iFOV) is a term commonly used in the context of remote sensing, imaging systems, and optical...

The polymerase chain reaction (PCR) is a widely used molecular biology technique used to amplify a specific segment of DNA...

A lensless photographic camera that uses a small sharp-edged hole as its aperture. The light passed by this aperture onto...

Extremely small organic and inorganic systems of molecules within a substance. In general, systems are colloidal size in...

A dye laser cell configuration in which the dye flows in the direction of the axis of the laser, yielding symmetrical energy...

An aperture, usually rectangular in shape, with a large length-to-width ratio, and a fixed or adjustable shape through which...

1. With respect to angular subtense, a source of light, such as a star, that is very small. In a lab, a point source may be...

A rare gas used in small high-pressure arc lamps to produce a high-intensity source of light closely resembling the color...