Incremental optical positioning sensor

Details Incremental optical positioning sensor Incremental optical positioning sensor

1996-12-18

1998-10-06

Allen, Stephone B

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2502081, 318687, G01B 7287

Patent

active

058180397

ABSTRACT:
An imaging system for a linear motor that provides information concerning movement of the same along a plurality of directions, with the information concerning motion along any one direction being substantially unaffected by motion of the motor in a differing direction. In this fashion, a plurality of detectors may be mounted onto the rotor of the linear motor to sense movement along a particular direction, with the detector being insensitive to motion of the motor along a differing direction. The system includes a substantially planar surface, such as a platen, having disposed thereon a pattern forming a two dimensional grid-like array.

REFERENCES:
patent: 3735231 (1973-05-01), Sawyer
patent: 3857078 (1974-12-01), Sawyer
patent: 4742219 (1988-05-01), Ando
patent: 4893071 (1990-01-01), Miller
patent: 5012089 (1991-04-01), Watanabe
patent: 5028969 (1991-07-01), Kasahara et al.
patent: 5324934 (1994-06-01), Clark
patent: 5378902 (1995-01-01), Pankove et al.
patent: 5434504 (1995-07-01), Hollis et al.

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