APPARATUS AND METHOD FOR DETECTING MOVEMENT ALONG AN AXIS
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United States of America Patent
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Issued Date -
May 16, 2024
app pub date -
Mar 15, 2022
filing date -
Mar 17, 2021
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Abstract
An apparatus may provide a control signal based on an axial position of a controller displaceable along an axis. The apparatus may include a component for displacement with said controller along said axis, a radiation source and detector arrangement configured to direct radiation towards a target region and generate a detector signal dependent upon radiation reflected from within that target region, and a computer processor configured to process said detector signal to determine a measure of distance or change of distance to a reflecting surface region within said target region, and to use said measure to provide said control signal. The component may define a reflecting surface that passes through said target region such that a reflecting surface region is present within said target region with a distance that varies with the axial position of the component along said axis.
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