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Here is a method besed on CIE1931 system: ;T :]?5W!
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1) Try to find the intersection point of CIE1931 standrad curve and the following line:
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y=k*(x-0.3333) + 0.3333 PW+B&7{
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k=(yo-0.3333)/(xo-0.3333) and (xo,yo) is the known color coordintae point. c2wgJH!g
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2) the wavelength of the intersection point will be the dominant wave to be determined. R!rj:f!>
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If you need further help, I can share an Excel file. n;LjKE
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Let me know how thing's going. {ObUJ3
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Hope helpful. Hm'aD2k
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Mang