DISTANCE MEASUREMENT DEVICE AND DISTANCE MEASUREMENT METHOD
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United States of America
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Feb 24, 2022
app pub date -
Dec 18, 2019
filing date -
Dec 18, 2019
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Abstract
A distance measurement device for further reducing error in distance measurement results is provided. A reflective object disposed at a position of a predetermined distance along a path of a light from a light source is included. Then, first, a first time measurement unit measures a first time from when first light is emitted from the light to when reflective light from the reflective object is received by a light-receiving element. Thereafter, a second time measurement unit measures a second time from when second light is emitted from the light source to when reflective light from a target 1 is received by the light-receiving element. Subsequently, a distance calculation unit calculates a distance from the light source to the target along a path of the second light on the basis of the predetermined distance, the first time, and the second time. Accordingly, calibration for a distance measurement result is performed.
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