MODULATION UNIT FOR AN ENCODER
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United States of America Patent
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Issued Date -
Jun 20, 2024
app pub date -
Dec 20, 2022
filing date -
Dec 20, 2022
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Abstract
The present disclosure concerns a modulation unit for an encoder. The modulation unit is configured to be movably supported between a receiver for converting the detection of electromagnetic radiation into an output signal and an emitter for emitting electromagnetic radiation in the direction of the receiver, and comprises a code section comprising alternating opaque and transparent segments, the opaque segments being configured, in use, to interrupt emitted electromagnetic radiation between the emitter and receiver and the transparent segments being configured, in use, to permit emitted electromagnetic radiation to impinge on the receiver according to the position of the modulation unit. The modulation unit further comprises a plurality of index segments, wherein each index segment is uniquely identifiable in dependence on the output signal so as to serve as a starting point from which to begin monitoring the position of the unit.
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