SHAPE MEASUREMENT DEVICE AND SHAPE MEASUREMENT METHOD

Abstract

A first point measurement control unit 101 measures the position of an internal prescribed first point A on the basis of a reflection point R of laser light on a mirror 14, by causing a tubular section 11a of a tubular rotating section 11 to rotate to a prescribed reference tube angle a1, causing a cylindrical section 13a of a mirror rotating section 13 to rotate to a prescribed reference mirror angle ß1, and causing laser light L to be radiated. A first rotation control unit 102 causes the tubular section 11a to rotate 180 degrees from the reference tube angle a1. A second rotation control unit 103 causes the cylindrical section 13a to rotate 180 degrees from the reference mirror angle ß1. A second point measurement control unit 104 measures the position of an internal prescribed second point B on the basis of the reflection point R of the laser light L on the mirror 14, by causing the laser light L to be radiated after the tubular section 11a has been rotated by just 180 degrees and the cylindrical section 13a has been rotated by just 180 degrees. A correction control unit 105 corrects the rotational movement of the tubular section 11a and the rotational movement of the cylindrical section 13a.

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