Programmable light curtains
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United States of America Patent
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Nov 8, 2022
Grant Date -
Feb 4, 2021
app pub date -
Mar 11, 2019
filing date -
Feb 13, 2015
priority date (Note) -
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Abstract
Embodiments described herein are generally directed to a device that monitors for the presence of objects passing through or impinging on a virtual shell near the device, referred to herein as a “light curtain”, which is created by rapidly rotating a line sensor and a line laser in synchrony. The boundaries of the light curtain are defined by a sweeping line defined by the intersection of the sensing and illumination planes.
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