Color recognition device includes white equalization device provided by liquid crystal mirror element with 2 controlled zones respectively reflecting object light and white equalization light onto color sensor

摘要

The color recognition device has a light source (2) for illuminating an object, a color sensor (4) for detecting the light reflected from the object, a white equalization device and a device for evaluating the color sensor signal. The white equalization device has a liquid crystal mirror element (3) with 2 zones controlled electrically, to reflect the object light and white balancing light onto the color sensor.