Optical translation measurement
AssigneeOtm Technologies Ltd.
InventorsOpher Kinrot, Uri Kinrot, Gilad Lederer
Life of this patent
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Abstract
A method for determining the relative motion of a surface with respect to a measurement device comprising: illuminating the surface with incident illumination; detecting illumination reflected from the surface to form at least one detected signal; and determining the amount of relative motion parallel to the surface from said at least one detected signal, characterized in that said determining includes correcting for the effects of relative motion perpendicular to the surface.
Claims35
A method for determining the relative motion of a surface with respect to a measurement device comprising:
- placing a partially transmitting object, which is part of the measuring device, adjacent to the surface;
- illuminating the surface with incident illumination, which does not constitute an interference pattern, such that the illumination is reflected from portions of the surface, wherein at least part of at least one of the incident and reflected illumination passes through the object;
- detecting the illumination reflected from the surface, and generating a detected signal;
- and
- determining the relative motion of the surface parallel to the surface, from the detected signal.
A combination mouse/touch point for use as a pointer for a computer comprising:
- a housing having an aperture;
- an optical detector which determines the motion of an object which is translated across the aperture;
- and
- means for determining whether the aperture is upward or downward facing.
Dependencies are inferred from the claim text.