Two-dimensional motion sensor

Details Two-dimensional motion sensor Two-dimensional motion sensor

2006-10-18

2008-12-02

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C345S156000, C345S166000

Reexamination Certificate

active

07459671

ABSTRACT:
An optical sensor and method of using the same is provided for sensing relative movement between the sensor and a surface by detecting changes in optical features of light reflected from the surface. In one embodiment, the sensor includes a two dimensional array of photosensitive elements, the array including at least a first plurality of photosensitive elements arranged and coupled to sense a first combined movement along a first set of at least two non-parallel axes, and a second plurality of photosensitive elements arranged and coupled to sense a second combined movement along a second set of a least two non-parallel axes.

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