Photoelectric position measuring arrangement

Details Photoelectric position measuring arrangement Photoelectric position measuring arrangement

1989-10-10

1991-10-29

Rosenberger, Richard A.

Optics: measuring and testing

By polarized light examination

With light attenuation

33707, G01B 1102, G01B 1126

Patent

active

050610732

ABSTRACT:
A position measuring arrangement is provided which presents a graduation carrier with graduation and reference mark fields to a scanning plate. A prism is allocated to one of the measuring graduation fields and reference mark fields. The prism provides an optical separation of the measuring graduation and reference mark fields transversely to the measuring direction.

REFERENCES:
patent: 2886718 (1959-05-01), Shepherd et al.
patent: 4195909 (1980-04-01), Holle et al.
patent: 4459750 (1984-07-01), Affa
patent: 4479716 (1984-10-01), Nelle
patent: 4677293 (1987-06-01), Michel
patent: 4766310 (1988-08-01), Michel
patent: 4776701 (1988-10-01), Pettigrew

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