ONE-DIMENSIONAL MEASURING MACHINE AND COMPUTER-READABLE NON-TRANSITORY MEDIUM
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United States of America Patent
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Issued Date -
Mar 7, 2024
app pub date -
Aug 16, 2023
filing date -
Sep 7, 2022
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Abstract
A one dimensional measuring machine includes a scale having graduations, a mover that has a light source configured to emit light to the graduations of the scale and a light receiving element configured to receive the light having passed through the scale from the light source, and can move along the scale, a light amount information detector that detects information regarding a light amount of the light emitted to the scale from the light source while the mover moves along the scale, and a contamination detector that detects a degree of contamination of the scale, based the information regarding the light amount of the light detected by the light amount information detector.
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