AdTech Ceramics - Ceramic Packages 1-24 LB

Photonics Marketplace

Suppliers Products

Handbook Institutions Dictionary

Show Filters

Hide Filters

Type

DefinitionsAbbreviations/Acronyms

Browse by Letter

Excelitas PCO GmbH - Industrial Camera 11-24 VS HP

8,726 terms

Photonics Dictionary

color vision

Color vision refers to the ability of organisms to perceive and distinguish different wavelengths of light as different colors. It is a sensory ability that allows humans and many other animals to...

color-defective vision

Situation in which the observer requires fewer than three independent stimuli to make color matches. Dichromats require only two stimuli and are classified as protanopes and deuteranopes (both...

color-sensitive

An emulsion that can record colored light.

color-translating microscope

A type of compound microscope that uses three visible wavelengths to translate details produced by invisible radiation.

colorant

A substance such as a dye or pigment that is used to alter the color of light.

colored glass filters

Colored glass filters are optical components made from glass that has been uniformly tinted with specific colorants or dyes. These filters are designed to selectively transmit certain wavelengths of...

colorimeter

A colorimeter is a device used to measure and quantify the color characteristics of an object or a light source. It provides objective and standardized color information, typically expressed in terms...

colorimetric photometer

A photometer that uses a set of color filters to measure the intensity of light in various regions of the spectrum.

colorimetric purity

Ratio, to the luminance of a test color, of the luminance of the spectrum color that matches the test color when mixed with white light.

colorimetry

Colorimetry is the science and technology of quantitatively describing and measuring colors. It involves the precise evaluation of color attributes such as hue, saturation, and brightness, using...

coloring media

Transparent media which, when placed in front of a light source, change their color as a result of the selective absorption of some of the light.

colorizing -> false color

In imaging technology, assigning color to black and white images to differentiate features or convey information. Also called colorizing.

column chromatography

The chromatography method in which the stationary phase is supported in or on an inert packing in a column, through which the mobile phase passes.

COM

computer-output microfilm; Center for Optical Manufacturing

coma

A lens aberration, resulting from different magnifications in the various lens zones, that occurs in that part of the image field that is some distance from the principal axis of the system....

comb filter

A filter that passes a series of wavelength regions that are at equal distances from one another, such that its output resembles the teeth of a comb. In video transmission, a comb filter is used to...

combiner

A semitransparent mirror in an optical system that combines two or more output beams into a single coaxial beam.

COMINT

An acronym for communications intelligence, referring to the collection of communications signals in the VHF and UHF frequency ranges (20 to 1200 MHz).

COMINT

communications intelligence

common optoelectronics laser detection system

A laser warning and countermeasure system containing a sensor that indicates the direction of a laser beam, and analytical instruments to determine pulse code, repetition frequency and wavelength.

common-mode voltage

An electrical problem that occurs when voltage is not the same with respect to ground at every node of a system, causing current to circulate between nodes.

communicator bandwidth

The maximum rate at which temporally disjunct optical signals can be produced or detected.

compact disk read-only memory -> CD-ROM

compact disc read-only memory

compacting

The heat-treating method in which the index of refraction of glass is fixed near or at its maximum value by holding the glass for different periods at suitable degrees of heat below the range of...

companding

A deliberately nonlinear amplitude modulation that strengthens weak signals and reduces strong signals for transmission.

comparator

1. An eyepiece or magnifier with a scale at its image plane. That scale is placed in contact with an object, permitting direct measurement of its size. 2. Also called traveling stage and traveling...

comparator-densitometer

A device used to project a reference spectrum next to a spectrum to be analyzed to provide visual comparison.

comparison lamp

A reference incandescent light source having a luminous intensity that is used in photometry for comparison of other light sources.

comparison microscope

Two microscopes that are coupled on a common stand, the two images being projected side by side in the field of view of a single eyepiece for comparison.

comparison spectroscope

A device used for the comparison of spectra used, in turn, for the comparison of elements, such as the absorption lines in the spectra of stars and the spectra of elements in the stars being observed.

comparison spectrum

In analysis, a reference spectrum, having predetermined wavelengths, that is used to determine the wavelengths of another spectrum through comparison of the two.

compensated reflector

A corner reflector that provides an increase in the range of angles over which it may be used.

compensating eyepiece

A microscope eyepiece designed for use with apochromatic objectives. Since apochromatic objectives are undercorrected for lateral color, these eyepieces are overcorrected for that aberration.

compensating filter

A filter used in photography to change the spectral composition of light entering a camera, or to adjust color balance during printing.

compensating glass

Also known as clear glass or clear filter. The clear glass plate is used to simulate a filter, in converging or diverging light, to maintain focus.

compensating wedge -> measuring wedge

A wedge in a rangefinder or heightfinder used to displace the image produced by one telescope so that it coincides with that produced by the other telescope, thus affording a measurement of the...

compensator

An optical element that measures the phase difference between two components of elliptically polarized light to correct for mechanical or optical displacement.

complementary colors

Colors that produce an achromatic color when additively mixed.

complementary metal-oxide semiconductor

Complementary metal-oxide-semiconductor (CMOS) refers to a technology used in the fabrication of integrated circuits, particularly semiconductor devices like microprocessors, memory chips, and image...

complementary wavelength

Also called complementary dominant wavelength. On a chromaticity diagram, the wavelength on the spectrum locus that lies on the same straight line as the achromatic point and the sample point for a...

complex lens

A lens made up of a number of lens elements arranged into two or more groups.

component

1. A constituent part. It may consist of two or more parts cemented together, or with near and approximately matching surfaces. 2. The projection of a vector on a certain coordinate axis or along a...

composite video

A type of video signal in which the luminance and chrominance portions of the signal, or the luma and chroma, have been combined according to standards such as NTSC, PAL or SECAM.

composite wave filter

A transducer composed of more than one high-pass, bandpass, low-pass or band-elimination filter.

compound crosspoint

A device for obtaining very low crosstalk in a crosspoint by arranging two simple switches along different arms of a passive crossover and connecting the switches with a curved connecting guide to...

compound lens

A lens composed of two or more separate elements of optical glass that may or may not be cemented together. The surfaces of the elements are shaped to reduce or eliminate the aberrations inherent in...

compound microscope -> microscope

An instrument consisting essentially of a tube 160 mm long, with an objective lens at the distant end and an eyepiece at the near end. The objective forms a real aerial image of the object in the...

compound semiconductor

A semiconductor made up of two or more elements, in contrast to those composed of a single element such as germanium or silicon. In a III-V semiconductor, for example, one or more elements having...

compound shutter

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

compressed digital video -> digital video compression

A step-by-step method of reducing the amount of data in a digital video signal to transmit or store a high-quality image. The digitized picture is analyzed, and fine detail and redundant pixels,...

Photonics Dictionary

Need Help?