Matrix of image brightness detector's elements formed by different groups of different shape or size

US5164583A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Horst Aichinger · Ergolding, DE
• Udo Heinze · Erlangen, DE

Key dates

• Filing date: Sep 3, 1991
• Grant date: Nov 17, 1992
• Expiry date: Sep 3, 2011

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05G1/64
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A detector for the image brightness which is present at the output screen of an x-ray image intensifier is formed by a combination of individual detector elements, the detector elements having different shapes and/or sizes. The detector elements in combination form a matrix which enables an optimum selection of a desired measurement field by selecting defined combinations of individual detector elements.