Optics: measuring and testing – By alignment in lateral direction
Patent
1982-03-10
1985-08-27
Rosenberger, R. A.
Optics: measuring and testing
By alignment in lateral direction
356375, 33276, G01B 1100
Patent
active
045375097
ABSTRACT:
An optical inspection system includes a thin optical probe having spaced parallel viewing surfaces on opposite sides and image reflecting elements within for transmitting images from the viewing surfaces to viewing optics including optical paths aligned with the edge of the probe to receive and magnify images from the viewing surfaces. The apparatus permits insertion of the probe for inspection and measurement of areas not readily accessible by conventional means. The probe is preferably used as part of a system and method for optical alignment verification of double sided floppy disk transducer head assemblies, wherein the probe is inserted between the heads, with their read/write gaps adjacent the viewing surfaces. Measurement apparatus is provided to permit measurement of the relative positions of the read/write gaps for the two heads. An optical tracking scope is provided for measuring any movements of a transducer mounted on a lift arm of a transducer assembly that are caused by lifting the arm wider than normal operating position to accept the thickness of the optic probe. The induced movements can then be compensated for in the calculation of head alignment.
REFERENCES:
patent: 2247113 (1941-06-01), Benford
patent: 2327257 (1943-08-01), Gary et al.
patent: 3052974 (1962-09-01), Williams
patent: 3355979 (1967-12-01), Wirtanen
Nortronics Company, Inc.
Rosenberger R. A.
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