Patent ID: 11940304
Assignee: DR. JOHANNES HEIDENHAIN GMBH
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A position-measuring device, comprising:
a scale having a first measuring graduation and a second measuring graduation, the first measuring graduation including a series of graduation structures which each extend parallel to a first direction, the second measuring graduation including a series of graduation structures which each extend parallel to a second direction, the first and second directions extending at a respective angle different from 0° with respect to a longitudinal axis of the scale;
a first scanning unit associated with the first measuring graduation for scanning the first measuring graduation;
a second scanning unit associated with the second measuring graduation for scanning the second measuring graduation;
a third scanning unit associated with the second measuring graduation for scanning the second measuring graduation; and
a fourth scanning unit associated with the first measuring graduation for scanning the first measuring graduation, and
wherein a first straight connecting line running through centers of the first and fourth scanning units and a second straight connecting line running through centers of the second and third scanning units form a predetermined angle therebetween, the predetermined angle being not equal to a sum of the angle of the first direction and the angle of the second direction.