On Color Control And Definition Of LED Lamps

On Color Control And Definition Of LED Lamps

Date:Jan 01, 2019

If the user does not use a pure DMX value to control the intelligent luminaire, and with some abstract control method, a virtual strength value can be used.

Even if the manufacturer requires the luminaire to use 3 DMX channels, the abstract control method can also be assigned 4 handles to control: Strength value and 3 color parameters. The author writes "3 Color parameters" instead of red, green, and blue, because RGB is just one way to describe color. Another way to describe it is hue (hue), saturation (saturation), and brightness (luminance)-HSL (some call it strength (intensity) or brightness (lightness), not brightness). Another description is Hue (hue), saturation (saturation), and brightness (value)-hsv. Value (brightness) is also often referred to as brightness (luminance), which is similar to iumlnance (brightness). However, the definition of saturation varies greatly between HSL and HSV. For simplicity, in this article, the author defines the hue as a color and the saturation as the amount of color. If "L" is set to 100%, that is white and 0% is black, then 50% of L is a solid color with a saturation of l00%.

For "V", the o% is black and the l00% is solid, at which point the saturation value must make up for its difference. Another effective way to describe it is CMY, which is a three primary color, using subtraction blending. If white light is emitted at first, then 2 filter sheets can be used to get red: magenta and yellow; they remove the green and blue components of the when removed, respectively.

In general, led discoloration lamps do not use subtraction blending, but this is still an effective way to describe colors. Theoretically, when controlling LEDs, you should be able to adjust the strength and RGB, CMY.

One of the HSL or HSV (there are some differences between them).


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