Chromaticity diagram

Ghromaticity Diagrams. The CIE 1931 chromaticity diagram uses the chromaticity coordinates ... 

Fig. 8. The 1931 CIE chromaticity diagram showing wavelengths in nm and energies in eV. The central point W (for white) corresponds to standard...

Fig. 10. The currently recommended 1976 CIE uniform u v chromaticity diagram showing wavelength in nm and energies in V A, C, and are...

Color from Incandescence. Any object emits light when heated, with the sequence of blackbody colors, black, red, orange, yellow, white, and bluish-white as the temperature increases. The locus of this sequence is shown on a chromaticity diagram in Eigure 14. 

Eig. 14. Blackbody colors shown on a chromaticity diagram the asterisk is standard illuminant at 650 K (5). 

OLEDs are obviously able to produce light with virtually every color in the CIE chromaticity diagram but the optimum inexpensive method to manufacture a pixeiatcd full color display is not yet established. The difficulty lies in patterning OLED materials with standard photolithographic methods. Five schemes to achieve color have been suggested, as illustrated schematically in Figure 13-19. 

These points on the chromaticity diagram are shown in the following diagram, given as 7.8.28. on the next page. 

It was soon determined that the 1931 CIE chromaticity diagram, and lumincmce function, Y, are not representative of equal visual spacing, that is, equal changes in Y do not represent equal changes in visual perception for all values of Y. Nor do equal increments of x and y represent the same visual effect for all locations on the chromaticity diagram. In other words, there is a minimum perceptual difference on both x and y (i.e.- Ax and Ay). But, the size of Ax and Ay is not the same at all parts of the chromaticity diagram. This is the same problem that Munsell encountered and is due to the fact that the human eye is... 

Fig. 9 (a) Molecular structures of novel ESIPT dyes, 2,5,-bis[5-(4-t-butylphenyl)-[l,3,4]oxadia-zol-2-yl]-phenol (SOX), and 2,5-bis[5-(4-t-butylphenyl)-[l,3,4]oxadiazol-2-yl]-benzene-l,4,-diol (DOX). (b) Emission colors in the Commission Internationale de L Eclariage (CEE) chromaticity diagram. The inner oval and the filled circle at coordinate (x,y) of (0.33, 0.33) indicate the white region and the ideal color, respectively. Note that PS and PVK denote polystyrene and poly (N-vinylcarbazole) film (reprint from ref. [91], Copyright 2005 Wiley-VCH)... 

A chromaticity diagram can therefore be drawn presenting colors in terms of their andy coordinates, which are often termed hue and saturation, respectively. A diagram of this type is presented in Fig. 7. 

In terms of the chromaticity diagram, it can be said that two colors having the same chromaticities (x,y) and the same luminous reflectance (Y) are matched. Technically, no information is provided about the appearance of two matched colors, although subjective judgements about specific colors identified by a pair of (, y) corrdinates are often made. 

Fig. 7 Chromaticity diagram presented in terms of the x and y coordinates. (Data adapted from Ref. 39.)...

CIE chromaticity diagram, 7 313, 315 typical applications of inorganic in plastics, 7 372t... 

CVD processes, 24 746 CVS system flow, 10 33, 35 CW laser beam, 14 673, 674 Cyagard RF1204, 11 496 Cyan, CIE chromaticity diagram, 7 313, 315. See also Cyan dyes... 

The CIE chromaticity diagram for the desired red, green and blue phosphors in colour television is given in Figure 3.5. There is some tolerance level around the... 

Figure 3.5 CIE chromaticity diagram for the desired phosphors in colour television.

Chromaticity diagram is a diagram which shows the colour stimulus in terms of two of its three attributes hue and chroma. 

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