Optical position detection

Details Optical position detection Optical position detection

1989-07-31

1991-04-09

Evans, F. L.

Optics: measuring and testing

By polarized light examination

With light attenuation

2504581, G01B 1114, F21V 916

Patent

active

050059793

ABSTRACT:
An apparatus for determining the position of an object comprises a light source positioned in relation to the object so that at least one collimated beam is issued from a particular positon on the object and bearing a fixed and definite geometric relationship to the sought position; a fluorescent foil or plate is positioned in relation to such object such that a particular spot is stimulated by that collimated beam which then provides the fluorescence; a plurality of fiber optics are arranged such that one end of each fiber optics is placed on a particular geometric pattern to receive radiation from the stimulated spot while the respective other end of each fiber optics is arranged in a similar but smaller scale geometric pattern as the first ends are and in relation to a detector that provides an electrical signal representing the position of the object.

REFERENCES:
patent: 4885471 (1989-12-01), Telfair et al.

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