Apparatus and methods of determining distance and orientation

Details Apparatus and methods of determining distance and orientation Apparatus and methods of determining distance and orientation

1987-05-29

1990-04-03

Hix, L. T.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

354162, 358107, 901 47, G03B 1708, H04N 718

Patent

active

049144600

ABSTRACT:
A method for determining position of and/or for positioning an object relative to both (a) its distance to a surface and (b) the orientation of its longitudinal axis to such surface involves emitting in a first plane toward such surface a plurality of first beams of coherent light from a first position adjacent the object so such first plane is at an acute angle relative to the object's longitudinal axis and the first beams of light project forward of the object to cross such longitudinal axis at such acute angle thereby forming on the surface a pattern of the illuminations of the first beams. Simultaneously, second beams are similarly emitted in a second plane toward the surface from a second opposed position adjacent the object to thereby form on the surface a pattern of illuminations of the second beams. The patterns of illuminations on such surface of the first and second beams, typically two parallel lines of light spots, are compared with a predetermined illumination pattern to enable the distance of the object to the surface and the orientation of the longitudinal axis of the object relative to the surface to be determined. Apparatus for conducting such methods is also disclosed.

REFERENCES:
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patent: 3435744 (1969-04-01), Stimson
patent: 3446555 (1969-05-01), Kahn
patent: 4105990 (1978-08-01), Rines et al.
patent: 4313654 (1982-02-01), Matsui et al.
patent: 4335944 (1982-06-01), Marshall
patent: 4381144 (1983-04-01), Breslau
patent: 4447896 (1984-05-01), Rines
patent: 4724480 (1988-02-01), Hecker et al.

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