Displacement measurement device, non-contact input apparatus, and biological micromotion measurement apparatus
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United States of America
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Mar 4, 2025
Grant Date -
Sep 21, 2023
app pub date -
Feb 14, 2023
filing date -
Feb 14, 2023
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Abstract
A displacement measurement device includes: an irradiation unit that irradiates a measurement object with coherent light; a luminance-change coordinate point detection unit that detects a luminance-change coordinate point where a luminance change has occurred, based on light reflected from the measurement object, and outputs data related to the luminance-change coordinate point; and circuitry that calculates an amount of displacement of the measurement object, based on the data related to the luminance-change coordinate point, by performing computations of a first numerical sequence and a second numerical sequence. The first numerical sequence includes a set of first elements each representing a location of the luminance-change coordinate point extracted from the data. The second numerical-sequence includes a set of second elements each representing a location of the luminance-change coordinate point extracted from the data.
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