Optics: measuring and testing – Refraction testing – Prism engaging specimen
Patent
1975-05-19
1977-06-28
Corbin, John K.
Optics: measuring and testing
Refraction testing
Prism engaging specimen
250237G, 356172, G01B 1104
Patent
active
RE0292826
ABSTRACT:
Measuring apparatus using the moire fringe concept of measurement to provide a precise digital numeric indication of displacement between two relatively movable members. The apparatus includes an accurately ruled grating or scale, a transducer head in the form of an index grating supported on a movable carriage and a transducer support housing. The scale is secured in a spar which is preferably mounted to the carriage of a machine tool such as a milling machine. The transducer support housing is mounted to the stationery part or bed of the machine tool and is provided with a cantilever spring element which holds the carriage in direct contact with the scale.
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Burns Richard H.
Hosack Donald R.
Welker Helmut
Bausch & Lomb Incorporated
Corbin John K.
Morgan DeWitt M.
Parker Frank C.
Rosenberger Richard A.
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