A device for measuring diffraction grating efficiency at any angle of incidence, consisting of a reflectometer wherein the detector rotates around the grating at a specific distance and is attached to a vacuum-ultraviolet monochromator that...

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

Holographic tomography is an advanced imaging technique that combines holography and tomography to provide three-dimensional...

An endoscope is a medical device used for visualizing and examining the interior of hollow organs, body cavities, or...

A process by which a plastic cell is molded around a glass lens or lenses to create a mount, eliminating the metal barrel...

An early graphic scheme of colors in which saturated spectral colors are plotted around the circumference of a circle....

1. In a cathode-ray tube, the glow surrounding a bright spot that appears on the fluorescent screen as the result of the...

An endoscopic surgical instrument that includes a channel for the introduction of supplementary instruments.

A two-lens arrangement intended to image light into a microscope slide sample. The primary aberrations present are red and...

Long-wave infrared (LWIR) refers to a specific range of the infrared spectrum. Infrared radiation is divided into three main...

A tool used in cutting circular holes around a center. Also, a laser cutter in which the beam moves in relation to the cut...

A Risley prism, also known as a Risley prism pair or Risley rotating prism, is an optical device used for controlling the...

In a liquid crystal system, the director refers to the local symmetry axis around which the long range order of the liquid...

A nonluminous area around a negatively charged probe that is inserted into the positive column of an arc or glow discharge.

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

A special evacuated camera equipped with means for holding a specimen and bombarding it with a sharply focused beam of...

Holmium lasers are a type of medical laser that utilizes holmium-doped crystals as the gain medium. The term holmium laser...

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

Chromatic aberration is an optical phenomenon that occurs when different wavelengths (colors) of light are refracted by a...

One of two types of solar time - the other being apparent solar time - the mean solar time is the time measured by the...

A circular lamp or bundles of optical fibers placed around the perimeter of an objective lens to illuminate the object field...

A device used in electron microscopes and particle accelerators to focus electron beams by the arrangement of four...

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

Germicidal ultraviolet (GUV) refers to a specific range of UV radiation that has disinfectant properties capable of killing...

A device having a plane mirror so mounted that it can be set to reflect sunlight into a piece of laboratory equipment. It is...

An expression of the tolerance of decentration of a laser diode from the optical axis: the region around the axis in the...

A type of high-speed photographic shutter that uses Faraday rotation to produce exposure times as fast as 1 microsecond. It...

A measuring instrument used for surface profiling and quantifying the roughness of a material. The stylus is placed on the...

A rotating component with a series of flat reflective surfaces around the perimeter that is used in scanning systems to...

Deep ultraviolet (DUV or deep-UV) refers to a specific range of ultraviolet light with shorter wavelengths than those in the...

A reflecting prism that is rhomboidal in shape. It has two parallel transmitting faces, and two parallel reflecting faces;...

In fiber optics, the glass that is found around the glass core of the fiber, and that has a lower refractive index than the...

An infrared light-emitting diode (IR LED) is a semiconductor device that emits infrared light when an electric current...

Filoviruses are a family of viruses that are responsible for severe and often fatal hemorrhagic fevers in humans and...

In a fiber optic cable, the longitudinal length required for the transmission media, wrapped around a central member, to...

Recombinase polymerase amplification (RPA) is a molecular biology technique used to rapidly amplify specific DNA or RNA...

An alexandrite laser is a solid-state laser that utilizes a synthetic crystal made from the rare earth element alexandrite...

A shaft, spindle or any object generally passed through a workpiece to hold, support or shape a particular piece during its...

A laser crystal, also known as an active medium or gain medium, is a solid-state material used in the construction of...

An optical mounting device that permits adjustment around two perpendicular and intersecting axes of rotation.

A means of testing optical fiber for macrobending losses by wrapping the fiber once at very low tension around a mandrel,...

A center-opening shutter made up of several identical leaves that are mounted symmetrically around the optical axis of the...

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

An Er:YAG laser is a type of solid-state laser that uses a crystal made of erbium-doped yttrium aluminum garnet...

The separation of unpolarized light into two plane-polarized elements by a doubly refracting crystal. When a crystal, such...

An InGaAs (indium gallium arsenide) camera is a type of imaging device that utilizes InGaAs sensors to capture images in the...

Azimuthal polarization refers to a specific polarization state of light where the electric field vector of the...

A coating made up of particular birefringent materials having polarizing properties. It may be used, in some cases, to...

Low Earth orbit (LEO) refers to a region in space that is relatively close to Earth's surface, typically characterized by...

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

Self-phase modulation (SPM) is a nonlinear optical phenomenon that occurs when an intense laser beam passes through a...

Light present in the environment around a detecting or interpreting device, especially a machine vision system, and...

A type of streak camera that uses film wrapped around a drum, which moves at a constant speed to record the changing shape...

In local area networking, arrangement of the satellite nodes around a central node through which all routing of network data...

A device used in thin-film deposition; the material to be evaporated is placed in a crucible that is heated inductively by...

Hyperchromic shift refers to an increase in the absorption of light, leading to a higher absorbance, often observed in...

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

An optical filter so constructed that the density increases progressively from one end to the other, or angularly around a...

A surveying device used to measure vertical displacement of target centers of scale lines from a horizontal plane generated...

The maximum variation in thickness of a lens as measured around a diameter centered on the optical axis. The ETD divided by...

An apochromat, often referred to as an apochromatic lens or apochromatic objective, is a type of optical system designed to...

A naturally occurring crystalline mineral that has the property of polarizing transmitted light. It is little used now that...

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

A metal coil or coils wrapped around the outside of the neck of a cathode-ray tube. Current passing through the coils...

Virtual reality (VR) is a computer-generated simulation of a three-dimensional environment or experience that can be...

A method of resampling in which a 16-pixel neighborhood around a given pixel from the original image is used to calculate...

The constant outward flow of weakly magnetized plasma from the sun that is deflected by the magnetic field of the earth and,...