Method and device for inspecting containers and preforms

摘要

A method and a device for inspecting containers and/or preforms. A scattering medium is provided in the interior of the containers or preforms and is irradiated in such manner that the scattering medium forms a bright field behind the container or preform wall area to be imaged. In this way, the wall area can easily be illuminated and imaged from different directions, so that inspection units can be created with a high degree of design freedom and with smaller dimensions.

主权项

1. A method for inspecting containers or preforms, comprising:
a) providing a scattering medium in an interior of the containers or preforms; b) irradiating the scattering medium in such a way that the scattering medium forms a bright field behind a wall area of the container or preform to be imaged; and c) imaging the wall area, wherein at least when imaging the wall area, the scattering medium is present in a gaseous form.