Photonics Dictionary: C

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chromaticity coordinates

Proportions of standard primaries (tristimulus values) required for a color match; ratios of each tristimulus value of a color to their sum. In the CIE colorimetric system, designated X, Y and Z.

CIE coordinates -> chromaticity coordinates

Proportions of standard primaries (tristimulus values) required for a color match; ratios of each tristimulus value of a color to their sum. In the CIE colorimetric system, designated X, Y and Z.

calligraphic imager -> stroke pattern

The pattern formed by a character generation cathode-ray tube system, in which the characters are composed of a sequence of line segments (strokes) generated by the electron beam motion with time...

cartesian

Of or pertaining to the methods of the French philosopher Rene Descartes. Refers to the standard orthogonal X-Y-Z coordinate system.

character generator

Computer hardware or firmware that accesses character patterns stored in read-only memory and displays them at specific coordinates on a screen.

chromaticity diagram

The plane diagram produced by plotting one of the three chromaticity coordinates (X,Y,Z) against another. The most common diagram is the CIE (X,Y) diagram, which is plotted in rectangular coordinates.

CIE system

Methodology for specifying color based on the CIE sources, observers, and coordinate system.

cinetheodolite -> phototheodolite

A camera equipped with angular scales in altitude and azimuth. The scale readings are imprinted on the film when an exposure is made. The exact point indicated by the scale readings is shown by...

CMM

coordinate measuring machine

COCOM

Coordinating Committee for Multilateral Export Controls

coherent bundle -> aligned bundle

An assembly of fibers in which the coordinates of each fiber are the same at the two ends of the bundle. Also called coherent bundle.

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...

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...

coordinate measuring microscope

An instrument used to measure the coordinates of a point on an object such as a photographic plate.

Photonics DictionaryC

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