Short-exposure tomosynthesis apparatus for the formation of laye

Details Short-exposure tomosynthesis apparatus for the formation of laye Short-exposure tomosynthesis apparatus for the formation of laye

1981-12-14

1984-09-04

McGraw, Vincent P.

Optics: measuring and testing

Document pattern analysis or verification

378 23, G06K 958

Patent

active

044694407

ABSTRACT:
An apparatus for generating images of layers of an object from perspective images recorded from different positions by an array of radiation sources. The apparatus comprises an illumination device, for transilluminating the perspective images, and an imaging matrix comprising imaging elements. An optical system axis extends perpendicularly through the center of the matrix. The matrix superimposes the perspective images on a light-sensitive detector surface. In the apparatus, an optical deflection element is arranged in front of or behind each imaging element. The deflection element blurs the perspective image along a pattern which exhibits a major direction. The relevant deflection element is so arranged that the major direction extends at least substantially perpendicularly to a straight line connecting the optical system axis to the center of the imaging element within the matrix plane. All deflection elements are arranged in such a way relative to each other that the major directions subtend substantially equal angles with each other.

REFERENCES:
patent: 4246483 (1981-01-01), Weiss et al.
Chu, D. C. et al., "Multiemulsion On-Axis Computer Generated Hologram," Applied Optics, vol. 12, No. 7, pp. 1386-1388 (Jul. 1973).

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