1、tD N u I- m TEPAC ENGINEERING BULLETIN 1976 CIE-UCS Chromaticity Diagram With Color Boundaries TEB26 JULY 1988 ELECTRONIC INDUSTRIES ASSOCIATION ENGINEERING DEPARTMENT I- EIA TEB26 88 3234600 0007247 3 NOTICE EIA Engineering Standards and Publications are designed to serve the public interest throug
2、h eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards and Pub- lications shal
3、l not in any respect preclude any member or non-member of EIA from manufacturing or selling products not conforming to such Standards and Publications, nor shall the existence of such Standards and Publications preclude their voluntary use by those other than EIA members, whether the standard is to
4、be used either domestically or internationally. Recommended Standards and Publications are adopted by EIA without regard to whether or not their adoption may involve patents on articles, materials, or processes. By such action, EIA does not assume any liability to any patent owner, nor does it assum
5、e any obligation whatever to parties adopting the Recom- mended Standard or Publication. This TEFAC Engineering Bulletin was developed by the JT-20 Committee on Cathode-Ray Display Devices, Publieshed by ELECTRONIC INDUSTRIES ASSOCIATION Engineering Department 2001 Eye Street, N.W. Washington, D.C.
6、20006 PRICE: $10.00 n Printed in U.S.A. x- EIA TEB2b 88 3234b00 00072q8 5 TEB26 Page 1 1976 CIE=UCS CHROMATICITY DIAGRAM WITH COLOR BOUNDARIES Peter Keller Tektronix, Inc. .- The 1931 CIE*, chromaticity diagram (Fig 1) has long been used to graphically depict color charac- teristics of hue and satur
7、ation for cathode-ray tube phosphors, In 1943, K. L. Kelly of NBS published a paperi that greatly enhanced its usefulness by di- viding the diagram into areas with identifying color names (Fig. 2), thus aiding comprehension of the significance of the 300 2.00 .IO0 .IOO. .200 .SOO .400 SOO .600 .700
8、.eo0 .o00 X COORDINATE FIG. 2. Kelly Chart of Color Designation for Lights. Source: K. L. Kelly, “Color Designations for Lights,” NBS Research Paper RP1565, J. Res. of NBS 31,271 (1943). I EIA TEB2b BB W 323qbOO 0007250 3 W . TEB26 Page 3 YELLOWISH- .-I- X FIG. 3. Kelly Chart of Color Designations f
9、or Lights (1931 CIE System). Source: EIA Publication TEP-116-B “Optical Characteristics of Cathode Ray Tubes.” The equal energy point is u =0.210, v =0.473. The ratio of distances between two colors and an intermediate third point is no longer proportional to the intensities of the first two colors
10、required to produce the third. Straight lines on the 1931 CIE diagram remain straight lines on the 1976 CIE-UCS diagram. Equal distances on the diagram represent ap- proximately equal perceived color differences. The 1976 CIE-UCS diagram is now .the official recommended practice of CIE. The EIA JT-%
11、O Committee e on Cathode-Ray Display Devices supports this sys- tem and will publish future data in u, v coordi- nates. REFERENCES Commission Internationale de L Eclairage. *;Uniform Chromaticity Scale. K. L. Kelly, Color Designations for Lights, NBS Research Paper RP 1565, Journal of Research of NB
12、S, 31,271 (1943). K. L. Kelly, (to be published). D. L. MacAdam, Visual Sensitivities to Color Differences in Daylight, Journal of Optical Society of America 32,247 (1942). CIE Supplement No. 2 to CIE Publication No. 15, 1978. EIA TEB2b BB m 3234600 0007253 5 m TEB26 Page 4 .a .I .6 .6 Y A .3 2 .1 x
13、 FIG. 4. 1931 Chromaticity Diagram with MacAdam Ellipses Showing Each Perceived Color Differences. Source: Wyszecki and Stiles, Color Science (John Wiley & Sons, New York, 1967). 06 FIG. 5. 1960 CIE-UCS Chromaticity Diagram. Source: W. G. Driscoll, Handbook of Optics (McGraw-Hill, New York, 1978), p
14、. 9-30 ,800 ,500 - 400 u ,300 .zoo .mo .ODD .mo ,200 ,300 ,400 ,500 400 .mo U FIG. 6. Kelly Chart of Color Designation for Lights (1976 CIE-UCS System). . -. EIA TEB2b 88 = 3234600 3 e APPENDIX a. 1931 CIE Standard Observer Wave- (nano- (nano- 0 r:g j(X) i(X) length i(X) j(A) i(X) meter) meter) 380
15、0.0014 O.oo00 0.0065 580 0.9163 0.8700 0.0017 385 0.0022 0.0001 0.0105 585 0.9786 0.8163 390 0.0042 395 400 405 410 415 420 425 430 435 440 445 450 455 460 465 470 475 480 485 490 495 500 505 510 515 520 525 530 535 0 5: 550 555 560 565 570 575 580 0.0076 0.0143 0.0232 0.0435 0.0776 O. 1344 0.2148 0
16、.2839 0.3285 0.3483 0.3481 0.3362 0.3187 0.2908 0.251 1 0.1954 0.1421 0.0956 0.0580 0.0320 0.0147 0.0049 0.0024 0.0093 0.0291 0.0633 O. 1096 0.1655 0.2257 0.2904 0.3597 0.4334 0.5121 0.5945 0.6784 0.7621 0.8425 0.9163 0.0001 0.0002 0.0004 0.0006 0.0012 0.0022 0.0040 0.0073 0.0116 0.0168 0.0230 0.029
17、8 0.0380 0.0480 0.0600 0.0739 0.0910 0.1126 O. 1390 0.1693 0.2080 0.2586 0.3230 0.4073 0.5030 0.6082 0.7100 0.7932 0.8620 0.9149 0.9540 0.9803 0.9950 1 .o002 0.9950 0.9786 0.9520 0.9154 0.8700 0.0201 590 0.0362 0.0679 o. 1102 0.2074 0.3713 0.6456 1 .O391 1.3856 1.6230 1.7471 1.7826 1.7721 1.7441 1.6
18、692 1.5281 1.2876 1.0419 0.8130 0.6162 0.4652 0.3533 0.2720 0.2123 0.1582 .O. 11 17 0.0782 0.0573 0.0422 0.0298 0.0203 0.0134 0.0087 0.0057 0.0039 0.0027 0.0021 0.0018 0.0017 595 600 605 610 615 620 625 630 635 640 645 650 655 660 665 670 675 680 685 690 695 700 705 710 715 720 725 130 735 740 745 7
19、50 755 660 765 770 775 780 1 .O263 1 .O567 1 .O622 1 .O456 1 .O026 0.9384 0.8544 0.7514 0.6424 0.5419 0.4479 0.3608 0.2835 0.2187 0.1649 0.1212 0.0874 0.0636 0.0468 0.0329 0.0227 0.0158 0.01 14 0,0081 0.0058 0.0041 0.0029 0.0020 0.0014 0.0010 0.0007 0.0005 0.0003 0.0002 0.0002 0.0001 o.ooo1 O.oo00 O
20、.oo00 0.7570 0.6949 0.6310 0.5668 0.5030 0.4412 0.3810 0.3210 0.2650 0.2170 O. 1750 0.1382 0.1070 0.0816 0.0610 0.0446 0.0320 0.0232 0.0170 0.01 19 0.0082 0.0057 0.0041 0.0029 0.0021 0.0015 0.0010 0.0007 0.0005 0.0004 0.0003 0.0002 0.0001 0.0001 0.0001 O.oo00 O.oo00 O.oo00 O.oo00 0.0014 0.001 1 0.00
21、10 0.0008 O.OOO6 0.0003 0.0002 0.0002 0.0001 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 O.oo00 *Corrected for spectrometer response 0
22、007252 7 TEB26 Page 5 To calculate color coordinates from spectral Multiply reading* at each wavelength by I 9 i Sum all I values to obtain X Sum ail 9 values to obtain Y Sum all i values to obtain Z x coordinate = curve: factors. X X+Y+Z Y X+Y+Z 4x -2x+ 12y+3 9Y y coordinate = u coordinate = v coordinate = -2+12+3
