Optical system for scanning a part with a beam and especially an

Details Optical system for scanning a part with a beam and especially an Optical system for scanning a part with a beam and especially an

1980-09-09

1982-10-05

Gill, James J.

Measuring and testing

Vibration

By mechanical waves

350432, 356239, G01N 2904

Patent

active

043522947

ABSTRACT:
The constructional arrangement and position of an optical system with respect to a part under inspection are such that the caustic formed within the part by the optical system by refraction of an ultrasonic or electromagnetic beam is concentrated on an axis at right angles to the surface of the part. Scanning of parts having different shapes can be performed to any predetermined depth by means of a single focusing transducer while a constant distance is maintained between the part and the transducer.

REFERENCES:
patent: 3028752 (1962-04-01), Bacon
patent: 3233449 (1966-02-01), Harmon
patent: 3924453 (1975-12-01), Clark et al.
patent: 3974684 (1976-08-01), Roule

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