US 12,140,411 B2
Standard for calibrating a coordinate measuring machine
Volker Greifzu, Oberkochen (DE); Uwe Holz, Essingen (DE); Nils Haverkamp, Aalen (DE); and Ulrike Zeiser, Nattheim (DE)
Assigned to Carl Zeiss Industrielle Messtechnik GmbH, Oberkochen (DE)
Filed by Carl Zeiss Industrielle Messtechnik GmbH, Oberkochen (DE)
Filed on Dec. 25, 2019, as Appl. No. 16/726,855.
Claims priority of application No. 10 2018 133 671.3 (DE), filed on Dec. 28, 2018.
Prior Publication US 2020/0256662 A1, Aug. 13, 2020
Int. Cl. G01B 11/00 (2006.01); G01B 7/008 (2006.01); G01B 21/04 (2006.01)
CPC G01B 11/005 (2013.01) [G01B 7/008 (2013.01); G01B 21/042 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A standard for calibrating a coordinate measuring machine, the standard comprising:
a main body; and
a permanent calibration structure including a plurality of calibration arrangements, wherein the plurality of calibration arrangements includes:
a first arrangement including a plurality of adjacent zones along at least three different axes that intersect at a common point, wherein:
the plurality of adjacent zones along each axis of the at least three different axes form a respective portion of the first arrangement delimited by the common point on one side,
each axis of the at least three different axes runs over a respective portion, and
the respective portions each have at least three adjacent zones including at least two directly adjacent zones that differ in at least one optical property; and
a second arrangement including a first set of elongated rectangular markers whose longitudinal axes converge at a first convergence point, wherein:
the first set of elongated rectangular markers includes a first elongated rectangular reference marker, a second elongated rectangular reference marker, and a third elongated rectangular reference marker, and
a first angle between the first elongated rectangular reference marker and the second elongated rectangular reference marker is different than a second angle between the third elongated rectangular reference marker and the first elongated rectangular reference marker.