Prüfung durchsichtiger Behälter mit Hilfe eines Retroreflektors

Contrôle de récipients transparents à l'aide d'un rétroréflecteur

Inspection of transparent containers with opposing reflection means


Apparatus (10) for detecting commercial variations in transparent containers (12) such as glass bottles that includes a conveyor (14) for directing containers along a path through an inspection station, and a light source (16) disposed on one side of the path for directing light energy through a container at the inspection station. A light sensing camera (28) is positioned on the same side of the conveyor path, and a retroreflector (22) is positioned on the opposing side of the conveyor path opposite the light source and camera for reflecting light energy transmitted from the source through a container at the station back through the container onto the camera. Commercial variations are detected as a function of variations in intensity of light energy received at the camera.




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Patent Citations (4)

    Publication numberPublication dateAssigneeTitle
    EP-0091854-A1October 19, 1983Regie Nationale Des Usines RenaultMethod and device for identifying and/or locating objects transported by means of a conveyor
    GB-2157824-AOctober 30, 1985Owens Illinois IncInspecting and sorting of glass containers
    US-3628872-ADecember 21, 1971Baxter Laboratories IncSpectrophotometric test apparatus and method employing retroflective means
    US-4403858-ASeptember 13, 1983Hajime Industries Ltd.Defect inspection system

NO-Patent Citations (1)

    OPTIK vol. 71, no. 3, 1985, STUTTGART DE pages 105 - 112 H. MAGUERRE 'Ein neues inkohärentes Schlierenverfahren mit Retroreflektor'

Cited By (2)

    Publication numberPublication dateAssigneeTitle
    EP-0692710-A1January 17, 1996Verreries Souchon Neuvesel - VsnMethod and device for image processing for detecting light reflecting faults
    FR-2722574-A1January 19, 1996Verreries Souchon NeuveselProcede et dispositif pour detecter, par le traitement de sequences d'images, des defauts reflechissant la lumiere et presentes par un objet creux transparent