Tomograph using phase information of a signal beam having transm

Details Tomograph using phase information of a signal beam having transm Tomograph using phase information of a signal beam having transm

1991-07-03

1992-12-22

Howell, Janice A.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 19, 378145, 378901, 378 62, 250237G, 36441314, 36441326, G01N 2306

Patent

active

051739283

ABSTRACT:
A tomograph makes use of phase information obtainable from a radiation beam having transmitted a to-be-inspected object. In one embodiment, the tomograph has an interferometer for producing interference infringes between a signal beam having transmitted through the object and a reference beam and eventually producing Moire fringes a detector for detecting the Moire fringes, and a signal processing unit for processing outputs of the detector.

REFERENCES:
patent: 4340304 (1982-07-01), Massie
patent: 4562540 (1985-12-01), Devaney
Applied Physics Letters, vol. 6, No. 8, Apr. 1965, pp. 155-156.

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