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pan - Modern surface-independent optical mice work by using...

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Modern surface-independent optical mice work by using an optical sensor to take successive pictures of the surface the mouse is operating on. Most of these mice use LEDs to illuminate the surface that is being tracked; LED optical mice are often mislabeled as 'Laser Mice', probably due to the red LED which is used in almost all optical mice, though lasers are becoming more common, as they allow greater precision in movement detection. Changes between one frame and the next are processed by the image processing part of the chip and translated into movement on the two axes. For example, the Agilent Technologies ADNS-2610 optical mouse sensor processes 1512 frames per second: each frame is a rectangular array of 18*18 pixels, and each pixel can sense 64 different levels of gray. Demand for advances in optical mouse technology comes in large part from competitive FPS gamers, who prefer more accurate mice for more accurate aiming. Razer USA Ltd
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