Patent · US Expired

Device and method for recording images

US6888954B2 · kind B2 · utility

1Cited by

8References

27Claims

0Family size

Assignee

FOSS Analytical A/S · DK

Inventors

Erland Leide · Helsingborg, SE
Nils Wihlborg · Helsingborg, SE
Hakan Wedelsback · Ängelholm, SE
Tomas Jonasson · Helsingborg, SE
Roger Ylikangas · Lerberget, SE

Key dates

Filing date	Jan 11, 2001
Grant date	May 3, 2005
Priority date	—
Expiry date	Dec 28, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG01N33/02
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for recording images of small particles to detect cracking includes feeding particle samples to a place for image recording, illumination a particle sample from at least two directions simultaneously, the illumination occurring with different light wavelengths for each direction, recording partial images of the illuminated particle in different channels, which are sensitive to different wavelengths, and comparing the different partial images to analyze the particle sample. Each partial image shows the particle sample illuminated from one direction by the channel recording only one of the different light wavelengths.

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