Optics: measuring and testing – By polarized light examination – With light attenuation
Patent
1990-10-15
1992-02-25
Evans, F. L.
Optics: measuring and testing
By polarized light examination
With light attenuation
356 1, G01B 1124
Patent
active
050908111
ABSTRACT:
A non-contacting system for measuring the radius of a curved surface. The system includes a light source for illuminating the surface along the intersection of the surface with a plane which includes the radius to be measured. A lens, arranged such that its principal axis is perpendicular to the plane which includes the radius to be measured, is utilized to project a distortion free image of the intersection onto the photosensitive array within a video camera. The video signal generated by the camera is provided to a microcomputer which calculates surface radius from the image data included in the video signal.
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Kevin G. Harding, "Improved Optical Design for Light Stripe Gages", SME Sensors Symposium 1986.
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Article titled "Non-Contact Measurement of Radii", by Charles W. Donaldson, published in Spring, 1988 (Jun.) issue of Leading Edge Magazine.
Evans F. L.
General Electric Company
Moore, Jr. Charles L.
Squillaro Jerome C.
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