Positioning device and method

Details Positioning device and method Positioning device and method

1986-10-15

1989-02-28

Rosenberger, R. A.

Optics: measuring and testing

By polarized light examination

With light attenuation

356400, G01B 1114, G01B 1100

Patent

active

048080004

ABSTRACT:
An apparatus for establishing a desired position of a tool, including a means for moving the tool along a particular axis, a laser for providing a beam of coherent light along an axis which intersects the axes of tool movement and which is located so that the tool can block at least a portion of the beam, a detector of beam blockage, and a controller for tool movement which can respond to signals from the detector.

REFERENCES:
patent: 3749500 (1973-07-01), Carlson et al.
patent: 3812376 (1974-05-01), Takeyama et al.
patent: 3907439 (1975-09-01), Zanoni
patent: 3922094 (1975-11-01), Colding et al.
patent: 4009965 (1977-03-01), Pryor
patent: 4365301 (1982-12-01), Arnold et al.
patent: 4502823 (1985-03-01), Wronski et al.
patent: 4523850 (1985-06-01), Covey et al.
patent: 4585379 (1986-04-01), Nagayama et al.

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