GEOMETRY-MEASUREMENT DEVICE

WIPO Patent Application WO/2013/118312

A1

In order to provide a geometry-measurement device that makes it easy to calibrate the scan-direction orientation of line laser light, a distance sensor (15) that measures the distance to a reference bolt (B) attached to a workpiece (W) is supported so as to be able to rotate between the following: a first scan position (P1) in which line laser light (L) is shone in a first scan direction (S1) parallel to an X-axis; and a second scan position (P2) in which the line laser light (L) is shone in a second scan direction (S2) parallel to a Y-axis. On the basis of distances measured by the distance sensor (15) from the aforementioned scan positions (P1, P2) to a calibration surface (31), cross-sectional geometry (30A, 30B) corresponding to the part of the calibration surface (31) exposed to the line laser light (L) is computed, and the orientation of the line laser light (L) in the scan directions (S1, S2) is calibrated by rotating the distance sensor (15) in accordance with said cross-sectional geometry (30A, 30B).

FUJITA YOSHIHITO (JP)
NAKAMURA MIKIO (JP)
IENAGA HIROFUMI (JP)

PCT/JP2012/054514

August 15, 2013

February 24, 2012

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MITSUBISHI HEAVY IND LTD (JP)
FUJITA YOSHIHITO (JP)
NAKAMURA MIKIO (JP)
IENAGA HIROFUMI (JP)

G01B11/00

JPH09145320A	1997-06-06
JPH08328624A	1996-12-13
JPH04237145A	1992-08-25
JPH05231836A	1993-09-07
JP2008246659A	2008-10-16

MITSUISHI Toshiro et al. (JP)
Toshiro Mitsuishi (JP)

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