Position detection system for an object with at least five degre

Details Position detection system for an object with at least five degre Position detection system for an object with at least five degre

1997-02-06

1998-07-21

Pham, Hoa Q.

Optics: measuring and testing

By polarized light examination

With light attenuation

356373, 3561522, 369 4414, G01B 1114

Patent

active

057841683

ABSTRACT:
A position detection system (80) is described for detecting movements of an object (20) in at least five degrees of freedom, which system comprises a radiation source (33), a beam splitter (36) for forming a first measuring sub-beam (45) and a second measuring sub-beam (50), a reflector (38) arranged in the path of one of these measuring beams (45, 50) and a composite radiation-sensitive detection system (60). The first measuring sub-beam (45) is used for detecting displacements along three mutually perpendicular axes (X, Y, Z), and the second measuring sub-beam (50) is used for detecting rotations about at least two of these axes.

REFERENCES:
patent: 3706484 (1972-12-01), Doi et al.
patent: 4425043 (1984-01-01), Van Rosmalen
patent: 4832496 (1989-05-01), Thomas
patent: 4880992 (1989-11-01), Niedermayr et al.
patent: 5661704 (1997-08-01), Wan Rosmalen
"A Compact Optical Tape Recording System", G.E. Van Rosmalen, J.A.H. Kahlman, P.L.M. Put and C.M.J. Van Uijen, SPIE vol. 2338, Optical Data Storage, 1994, pp. 8-14.

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