Planckian locus


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Planckian locus

[′pläŋ·kē·ən ′lō·kəs]
(optics)
The locus of points on a chromaticity diagram that represents blackbody radiators at various temperatures.
References in periodicals archive ?
Those sources also appeared whiter despite their shift from the nominal Planckian locus. Perhaps the key lesson here is that even a color scientist takes the lamps home and performs a visual experiment before making a purchase.
The simulation program can predict not only the relative SPD, chromaticity coordinates, but also numbers of LED (N), drive currents ([I.sub.F]), the input power ([P.sub.in]), the luminous flux ([PHI]), and the luminous efficacy ([eta]) according to requirements of CRI, R9, CCT, and the distance from the Planckian locus on the CIE 1960 uv chromaticity diagram (dC), with polarity, plus (above the Planckian locus) or minus (below the Planckian locus) [15].
Similarly, a wide variety of colors, not limited to the Planckian locus, can be created via manipulation of red, blue, and green LEDs within a luminaire.