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(Image Omitted) The method determines the angular alignment of two objects about a mutual axis, where the center of rotation and transverse motions are not controlled.
English (United States)
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The method determines the
angular alignment of two objects about a mutual axis, where the
center of rotation and transverse motions are not controlled.
A rectangular collimated beam of light emanating from the reference surface
of the first object is directed upon a photocell array affixed to the reference
surface of the second object. The photocell array consists of four cells
electrically interconnected. The axis of sensitivity is parallel to the rays of the
collimated light beam.
Rotation of either object about this axis unbalances the bridge resulting in an
output voltage which is a function of angular mis-alignment.
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