Method and apparatus for measuring range by use of multiple rang

Details Method and apparatus for measuring range by use of multiple rang Method and apparatus for measuring range by use of multiple rang

1992-01-02

1994-12-20

Hellner, Mark

Optics: measuring and testing

Range or remote distance finding

With photodetection

G01C 308

Patent

active

053749855

ABSTRACT:
The present invention relates to a method and apparatus for extending the range and accuracy of electronic and electro-optical systems for determining the distance from a reference object to another object. A multiplicity of range baselines is employed, and a computer, usually a microprocessor, is used to automatically switch between baselines to extend the total measurement range, to increase the precision of range measurement over a prespecified set of ranges, or both. The invention has applications in a wide variety of range measuring systems, including robotics, autofocus cameras, autofocus binoculars, and autofocus vision aids for people with impaired vision.

REFERENCES:
patent: 4582424 (1986-04-01), Kawabata
patent: 4963017 (1990-10-01), Schneiter et al.
patent: 4970384 (1990-11-01), Kambe et al.
patent: 5000564 (1991-03-01), Ake

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