The velocity of a moving object is determined by monitoring the rate at which an image of the object travels across the surface of the optical sensor. The sensors measure velocities as high as 4 m ...

This Design Idea utilizes an optical computer mouse's sensor for measuring rotation of a disk which can be ... The resolution is about 0.0025 inches, and the motion speed, up to 16 inches per second.

sensor, the transducer signal is more robust and stable than that of an optical system. The transducer integrates both the magnetic technology and the speed measurement sensor, which saves space ...

Optical spectral measurements ... here could facilitate new label-free sensor applications that require both high resolution and fast speed, such as measuring binding kinetics and single-molecule ...