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Optical Mouse || PC Mouse || What is Inside An Optical Mouse? || Computer mouse - YouTube
Parul Polytechnic Institute - An optical mouse is a computer mouse which uses a light source typically a LED and a light detector such as an array of photodiodes, to detect movement
Image of Optical Mouse Wide Opened With Internal Parts Over an Isolated white Background-PC566819-Picxy
My Blog: Optical Components of an Optical Mouse (with real photos of mouse internals)