Fiber optic bore inspection probe

Details Fiber optic bore inspection probe Fiber optic bore inspection probe

1987-11-13

1989-07-18

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356241, H01J 516, G01N 2116

Patent

active

048496260

ABSTRACT:
A bore inspection probe utilizing optical fibers. A first layer of optical fibers and a second layer of optical fibers are placed over a tubular mandrel having a circular cross-section, and a mirror is placed adjacent the distal ends of the first and second optical fiber layers within the probe. The proximate ends of the optical fibers forming the second optical fiber layer are gathered into a bundle for exposure to a light source, whereas the proximate ends of the optical fibers forming the first optical fiber layer are fanned outwardly adjacent the end of the probe to form a thin optical fiber line. Light is transmitted to the surface of the bore via the second optical fiber layer and the mirror and is reflected from same via the mirror and the first optical fiber layer to form an image on the thin optical fiber line. Synchronization of a film with the movement of the probe within the bore produces a panoramic image of the surface of the bore on the thin optical fiber line.

REFERENCES:
patent: 3494354 (1970-02-01), Yokota et al.
patent: 4277168 (1981-07-01), Oku
patent: 4281929 (1981-08-01), Lord et al.
patent: 4634857 (1987-01-01), Fey
patent: 4657387 (1987-04-01), Heising et al.
patent: 4672432 (1987-06-01), Casper
Kloots, "The Expanding World of Fiber Optics", Optical Spectra, 6/71, pp. 29-32.

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