Planar LC12 manual Page 23 of

CIE: Abbreviation for the Commission Internationale de l'Eclairage, formerly referred to as the International Commission on Illumination (ICI).

Chrominance: The colormetric difference (dominant wavelength and purity) between any color and a reference "white" of equal luminance. In three-dimensional CIE color space, chrominance is a vector which lies in a plane of constant luminance.

Chromaticity: The color quality of light which is defined by its dominant wavelength and purity (see Chrominance).

Chromaticity Value: The scalar value of any one component of a three-component color (also called a tristimulus value). The unit value of each component is the amount of that component added to the other two components to produce a reference "white".

Color Data: The programmed values which determine the amplitudes of the signal which drive a color display.

Color Saturation: A psycho-physiological measurement of the degree to which a color appears to be free of white light.

Color Temperature: The temperature to which a black body must be heated to produce a color matching that of the source.

Contrast: The ratio between the maximum and minimum luminance values of a display.

dB (Decibel): A measure of the ratio of two signals. The dB value is 20 x log10 of a voltage or current ratio or 10 x log10 of a power ratio.

Foot-Candle [fC]: A unit of illumination equal to the illumination which occurs when uniformly distributed luminous flux is impinging on an area at a rate of one lumen per square foot.

Foot-Lambert [fL]: A unit of luminance equal to the uniform luminance of a perfectly diffusing surface emitting or reflecting luminance flux at the rate of one lumen per square foot.

Front Porch: The portion of a composite display signal which lies between the leading edges of a horizontal blanking pulse and the corresponding sync pulse.

Gray Scale: Variations in the luminance value of "white" light, from black to white. Shades of gray are defined as gray-scale graduations that differ by the square root of 2.

Illuminance: The density of luminance flux impinging on a surface. It is the quotient of the flux divided by the "apparent" or projected area of the surface.

Image: A displayed view of one or more objects or parts of objects.

Lambert: A unit of luminance equal to the uniform luminance of a perfectly diffusing surface emitting or reflecting light at the rate of one lumen per square centimeter.

Luminance: Luminous intensity reflected or emitted by a surface in a given direction per unit of apparent area. Measured in nits.

Lumen: The unit of luminous flux or rate of luminous energy flow. It is equal to the flux radiating through a unit solid angle (steradian) from a uniform point source of one candela.

Luminous Flux: The time rate of luminous energy flow, measured by its capacity to evoke a visual sensation. It is expressed in lumens.

Luminous Intensity: The luminous flux radiated by a point source. It is expressed in candela.

LUX: The international unit of illumination. One LUX equals one lumen per square meter.

MTBCF: Mean Time Between Critical Failure

Photometer???Any optical device which uses a comparison technique to measure luminous intensity, luminance, or illumination. An equality-of-brightness photometer is based on simultaneous comparison of adjoining visual areas; a flicker photometer compares successive stimuli in the same visual area.

Resolution: The number of addressable, controllable display or picture elements, or the number of hypothetical coordinate locations which can be used to position graphic elements on a display surface.

Shades of Gray: A division of the gray scale from black to white into a series of discrete luminance shades with a square-root-of-2 difference between successive shades.

Title: Product Specification: LC12 High-Bright Monitor	Page 23 of 24
Document Number: 023-0284-01	Revision: A