An optical encoder is a type of encoder that uses optical technologies to provide position, velocity or rotation angle feedback. Optical encoders use optical sensors combined with a disc with transparent and opaque regions to determine movement and position via an interrupter beam of light. They offer several advantages over traditional mechanical and electrical encoder technologies such as...
Dutch 
English
French
Spanish
Portuguese
Deutsch
Turkish
Italiano
Russian
Romaian
Portuguese (Brazil)
Greek
urdu