Higher precision due to image analysis. An optical mouse tracks movement using a small camera and sophisticated image processing rather than rolling a ball across a surface.
Optical Mouse Work Versus Mechanical Mouse: Precision, Surface Compatibility, and Maintenance
Understanding Surface DPI and Polling Rate Not all surfaces react the same way to the sensor, which is where DPI (dots per inch) comes into play. This light is captured by a tiny optical sensor, essentially a low-resolution camera taking over a thousand images per second.
Glass Desk 400 - 800 DPI Requires high reflectivity sensors to work. This technology allows the device to function on a wide variety of desks and mouse pads without needing special pads coated with perpendicular lines.
Optical Mouse Work Versus Mechanical Mouse: Precision and Surface Compatibility
In contrast, an optical model offers consistent performance, a longer lifespan, and requires virtually no maintenance beyond keeping the lens clean. Highly reflective surfaces like mirrors or polished metal can confuse the sensor by bouncing light back into the camera incorrectly.
More About How does optical mouse work
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