Patent · US Active

Method and device for the detection in particular of refracting defects

US9804099B2 · kind B2 · utility

0Cited by

7References

11Claims

0Family size

Assignee

TIAMA · FR

Inventors

Michel Ollivier · Acigné, FR
Olivier Colle · Redmond, US
Marc Leconte · Givors, FR
Florence Drouet · Les Ulis, FR

Key dates

Filing date	Jan 21, 2015
Grant date	Oct 31, 2017
Priority date	—
Expiry date	Jan 21, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/90
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method of inspecting containers (3) moving between a linear camera and a light source (7) presents continuous variation of light intensity with a periodic pattern (71) along at least one variation direction (D). According to the method, for each movement increment of the container, a sequence of N successive image lines of the container is acquired cyclically so that for each image line; the container (3) is illuminated by the light source (7); the image line of the container is acquired; and the periodic pattern (71) is shifted for the next line along the variation direction (D). For each increment of the container (3), at least one phase image line is calculated; and the phase image lines (LP(k)) are analyzed.

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