Noncontact position measurement system using optical sensors

Details Noncontact position measurement system using optical sensors Noncontact position measurement system using optical sensors

1994-11-21

1996-09-03

Buczinski, Stephen C.

Optics: measuring and testing

Angle measuring or angular axial alignment

Relative attitude indication along 3 axes with photodetection

3561411, 3561522, G01B 1126, G01C 100

Patent

active

055528830

ABSTRACT:
Optical and computational components are combined to form a high precision, six degree-of-freedom, single-sided, noncontact position measurement system. Reflective optical targets are provided on a target object whose position is to be sensed. Light beams are directed toward the optical targets, producing reflected beams. Electrical signals are produced indicating the points of intersection of the reflected beams and the position-sensitive detectors. The position sensitive detectors may be lateral-effect photodiodes. The signals are transformed to provide measurements of translation along and rotation around three nonparallel axes which define the space in which the target object moves.

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