Information om | Engelska ordet ILLUMINANT

Exempel på hur man kan använda ILLUMINANT i en mening

• In 1964 the 10° CIE standard observer and its corresponding color matching functions as well as the new standard daylight illuminant D6500 were added, as well as a method for calculating daylight illuminants at correlated color temperatures other than 6500 kelvins.
• In color science, the white point of an illuminant or of a display is a neutral reference characterized by a chromaticity; all other chromaticities may be defined in relation to this reference using polar coordinates.
• To calculate the dominant wavelength of a chromaticity (or color), a half straight line is drawn on the chromaticity diagram that passes through the chromaticity's coordinates and starts in the white point (almost always, illuminant E, which is the equal energy white point).
• The mixed subscripts (t, i) refer to the inner product of the test illuminant spectrum and the spectral reflexivity of sample i:.
• From the commonly used CIE 1931 chromaticity diagram, it can be seen that almost all non-spectral colors (all except those on the line of purples), including colors described as white, can be produced by infinitely many combinations of spectral colors, and therefore by infinitely many different illuminant spectra.
• The Metamerism Index tests how well five sets of metameric samples match under the test and reference illuminant.
• While ANSI shades are ranges based on a specific illuminant, and do not directly convert into other measurements of transmittance, the following table gives a rough approximation (in terms of neutral density filter numbers and f-stops).
• Blanco mentioned that the seeds yield limpid, odorous oil which is employed in food as an illuminant.
• Spectrophotometers measure the percent transmittance of the product and automatically calculate and provide the Gardner color number using illuminant C and 2º observer.
• CRI is calculated from the differences in the chromaticities of eight CIE standard color samples (CIE 1995) when illuminated by a light source and by a reference illuminant of the same correlated color temperature (CCT), commonly measured in kelvins, indicating the light color produced by a radiating black body at a certain temperature; the smaller the average difference in chromaticities, the higher the CRI.

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