Patent · US Expired

Device for producing images of a layer of an object from multiple shadow images with varying degrees of overlap

US4416019A · kind A · utility

2Cited by

3References

18Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Hermann Weiss · Hamburg, DE
Rolf Linde · Haseldorf, DE
Wilfried Mauser · Bad Schwartau, DE
Erhard Klotz · Halstenbek, DE

Key dates

Filing date	Apr 7, 1982
Grant date	Nov 15, 1983
Priority date	—
Expiry date	Apr 7, 2002

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B6/06
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The invention relates to a device for producing images of a layer of a three-dimensional object, with radiation sources arranged in a radiation source plane, for irradiating the object with beams of rays from different directions, and with several planar recording layers, arranged parallel to one another, of recording all said shadow images, wherein before each recording layer there is arranged a diaphragm arrangement that has been allocated to it for (stepwise) masking of the beams of rays, and wherein the diaphragm apertures of each diaphragm arrangement are so much the smaller, the greater the distance the diaphragm arrangement is from the radiation sources.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.