color sensor- to separate the light contemplated from the pattern into different parts
A color sensor casts RGB light (red, green, and blue LEDs) on the objects and separates the light reflected from the sample into different parts of the visible spectrum and returns the intensity value for each sub-spectrum. The distribution of these values shows the spectral characteristics and, thus, the target's color. A typical industrial color sensor allows you to teach one or more colors to the sensor's memory. In many cases, you can manipulate the threshold or change the tolerance for each color.
As soon as calculating the ratio of the intensity of the received red, green, and blue light, a switching output will be activated if the device distinguishes differences in the color or appearance of the object.
Color detection sensors are divided into three categories based on function: one-waycolor sensor, two-way color sensor (receiver and transmitter), and reflective color sensor with a mirror.
It can be used for sorting packaging, checking different labels, or detecting colors and color ranges on packaging and film.
There are some considerable Points that are useful to know about light reflection in these sensors:
Only, the red light will be reflected if the light is emitted on a red surface.
All three RGB colors will be reflected if the light is emitted to a white surface.
The ratio of the red, green, and blue reflections varies based on the color of the object.
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Curious to know more about a Color Sensor ? The below blog post is just what you need: