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What do smart lights rgb, rgbw, and rgbcw mean?

2024-07-26 11:45:53

It is often seen that lights on the market are marked with rgb, rgbw, rgbcw, etc. So what do they mean? This article will explain one by one below.

RGB refers to the three colors of red, green and blue light, which can be mixed to produce various colored lights.

rgbw, refers to the three colors of red, green and blue light, as well as warm white light

rgbcw, refers to the three colors of red, green and blue light, as well as warm white light and cold white light

Regarding warm white light and cold white light, another thing must be mentioned here, the color temperature value.

In the field of lighting, the color temperature of light refers to: in blackbody radiation, with different temperatures, the color of light varies. The blackbody presents a gradient process from red-orange-red-yellow-yellow-white-white-blue-white. When the color of the light emitted by a certain light source appears to be the same as the color of the light emitted by a black body at a certain temperature, the temperature of the black body is called the color temperature of the light source (the color temperature of a total radiator with the same chromaticity of the measured radiation). absolute temperature).

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Based on the absolute temperature attribute of the color temperature of light, the unit of expression of the color temperature of light is the unit of the absolute temperature scale (Kelvin temperature scale): K (kevin). Color temperature is generally expressed by Tc.

When the temperature of the "black body" is higher, the spectrum has more blue components and less red components. For example, the light color of an incandescent lamp is warm white, and its color temperature is expressed as 2700K, which is usually called "warm light" "; The color temperature of daylight fluorescent lamps is expressed as 6000K. This is because when the color temperature increases, the proportion of blue radiation in the energy distribution increases, so it is usually called "cold light".

The color temperatures of some commonly used light sources are: standard candlepower is 1930K; tungsten lamp is 2760-2900K; fluorescent lamp is 3000K; flash lamp is 3800K; noon sunlight is 5600K; electronic flash lamp is 6000K; blue sky is 12000-18000K.

The color temperature of the light source is different, the color of the light is also different, and the feelings it brings are also different:

<3300K warm (reddish white) stable and warm

3000-5000K middle (white) refreshing

>5000K cool type (bluish white) cold

Color temperature and brightness: When illuminated by a high color temperature light source, if the brightness is not high, it will give people a cold atmosphere; when illuminated by a low color temperature light source, if the brightness is too high, it will give people a stuffy feeling. Author: Tuya Smart Home Product Sales https://www.bilibili.com/read/cv10810116/ Source: bilibili

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RGBCW light strip is a kind of intelligent lighting device, where "RGGBW" stands for red, green and blue light, warm white light and cold white light. This kind of light strip has five-way light sources, which can achieve rich color changes and lighting effects by controlling the combination and intensity of different colors. Specifically:

RGB: stands for red, green and blue light, which is the basis of all colors in light. Various colored lights can be produced by mixing them.

CW: stands for cool white light. This kind of light tends to be cold in color and is usually used in lighting scenes that require bright and cool lighting.

W: stands for warm white light. The color of this light tends to be warm and is usually used to create a warm and comfortable atmosphere.

The characteristic of the RGBCW light strip is that it has both cool white light and warm white light. By adjusting the intensity and proportion of these light sources, more diverse lighting effects can be achieved to meet the needs of different usage scenarios.For example, in home decoration, the atmosphere of the room can be changed by adjusting the color and brightness of the light. From a warm family gathering atmosphere to a formal business meeting environment, or even a relaxing reading corner, all can be achieved with RGBCW light strips