noun

definition

The quality of being luminous.

definition

The amount of light that passes through, is emitted, or is reflected from a particular area, and falls within a given solid angle.

definition

The luminous flux emitted in a given direction divided by the product of the projected area of the source element perpendicular to the direction and the solid angle containing that direction (i.e. luminous intensity divided by unit area), measured in stilbs or apostilbs.

Examples of luminance in a Sentence

A third signal uses all 3 cones to produce luminance.

Figure 5. The variation in maximum and minimum luminance for one laptop as a function of vertical viewing angle.

It has been characterizing displays since 1985, calibrating instruments and measuring luminance and chromaticity of displays.

Warm humid climates have predominantly overcast skies of very high luminance.

Monochrome display is not really adequate for debugging most graphics modes, because some colors have the same luminance.

Luminance Signal - That portion of the NTSC color television signal which contains the luminance Signal - That portion of the NTSC color television signal which contains the luminance or brightness information.

The functions listed below are the results of our collaborative research on human cone spectral sensitivities and luminance sensitivity.

Aided by a dual-layer, auto-exposure sensor, the T2i exposure system (iFCL for intelligent focus, color and luminance) takes factors like subject luminosity, focus distance and perceived color information into account during shooting.

Gray scale conversion is based on the C.I.E. x,y,z system where y represents luminance.

The TFT screens evaluated showed little or no variation in screen luminance.

Unless stated otherwise the sky luminance distribution is assumed to be that of the CIE standard overcast sky.

Measurements include directional luminous intensity, illuminance of lamps and meters, luminance of sources and meters and total luminous flux.

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