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  • Lighting Design

    Blend Warm and Cool White

    Posted by Pippo Pluto on April 11, 2015 at 6:22 am

    Hi all,
    I’m working with a system where I can dimmer 2 type of lights: Warm White (2600 °K) and a Cool White (8000 °K).

    What I’m tring to do is to find a formula/correlation to calculate the dimmer to apply to each single light to manage different color temperature.

    So far I’m starting from a Temp. (eg 5000 °K). I convert the this to xc and yc coordinates. Then I convert them to XYZ values.
    At this step I know that my two light have xyY coos. What I can mange to dimmer is only the Y component (luminance).

    Does anybody know a way to find the two Y coos to apply to Warm and Cool lights to reach the desired white color temp?

    thanks

    Pippo Pluto replied 11 years ago 2 Members · 2 Replies
  • 2 Replies

  • Dennis Size

    April 13, 2015 at 5:24 am

    Can you not afford a color temperature meter?

  • Pippo Pluto

    April 13, 2015 at 6:17 am

    Yes, I can.
    Is what I did so far to understand color coordinates shifts temperature derating of leds.
    My aim is to do an automatic control where I can set a Color Temperature and the algorithm set Warm and Cool to reach the desired temp.

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