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Here is a method besed on CIE1931 system: gLyE,1Z}u
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1) Try to find the intersection point of CIE1931 standrad curve and the following line: L(bYG0ZI5C
y=k*(x-0.3333) + 0.3333 C;C= g1I}
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k=(yo-0.3333)/(xo-0.3333) and (xo,yo) is the known color coordintae point. Bi'qy]%
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2) the wavelength of the intersection point will be the dominant wave to be determined. a2MFZe
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If you need further help, I can share an Excel file. fi6i{(K
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Let me know how thing's going. LR5X=&k
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Hope helpful. hrRkam !y
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Mang