An inspection system completes two inspections with a single camera. In one inspection polarized light illuminates the side wall of a bottle, passes through a pair of electrode surfaces on either side of a ferroelectric crystal which do not change the polarity and passes through a polarizer to image on the camera. In a second inspection the polarized light is rotated 90° by the same structure so that only light rotated as a result of stress in the bottle passes through the polarizer and images on the camera as a defect.

Container inspection machine

The present invention is a method and an apparatus for imaging a liquid-filling container in which a light emitting unit is provided for emitting and irradiating light onto the container and a light receiving unit is provided for receiving the light transmitted through the container The object of the present invention is to provide such a method and an apparatus for imaging a liquid-filling container This method and apparatus assures reliable detection of the surface of liquid filled in a container or of foreign substance mixed in the liquid or present in the container or the container material not only when the container is transparent, but also when the container is a colored container of a dark color such as black, dark green or dark brown or the container has a frosted surface of when the liquid filled in the container has a dark color For accomplishing this object, according to the present invention, the light emitting unit emits near infrared light or the light receiving unit receives near infrared light for imaging the container

Method and device for imaging liquid-filled container

Systems and methods for in-line inspection of plastic blow molded containers. The inspection system may comprise a plurality of emitter assemblies arranged in a vertical array. Each emitter assembly may cyclically emit light energy in at least two different narrow wavelength bands at a container as the container passes through an inspection area. The system may also comprise a plurality of broadband photodetectors arranged in a vertical array, each photodetector facing at least one of the emitter assemblies with the inspection area therebetween such that the photodetectors are capable of sensing light energy that passes through the container when it is in the inspection area. The system may also comprise a processor in communication with the photodetectors for determining a characteristic of the container based on signals from the photodetectors.

In-line inspection system for vertically profiling plastic containers using multiple wavelength discrete spectral light sources

A machine for inspecting a container which is being conveyed along a linear path. The machine has spaced left hand and right hand cabinets in front of the linear path with the space therebetween being space in which an operator can stand to be proximate to the linear path. The machine has left hand and right hand inspection stations which include a left-hand assembly located in front of the linear path and a right hand assembly located in front of the linear path. These assemblies are pivotally mounted about vertical axes so that they can be pivoted from a closed position proximate the liner path to a retracted position away from the linear path. At the retracted position an operator can enter the machine and service the inspection stations.

The invention relates to a device for inspecting filled and closed receptacles, comprising a carousel in which the receptacles to be inspected are rotated about their longitudinal axis in such a way that the content inside the receptacles starts to rotate sufficiently fast for stirring up from the receptacle bottom any foreign matter that might be contained. The device further comprises a second carousel arranged downstream in the direction of conveyance for the suspended transport of the receptacles. At least one inspection device working according to the dark-field principle is associated therewith to detect light-scattering foreign matter in the content. Both carousels are juxtaposed in such manner that their partial circles are tangent to each other so that the receptacles from the first carousel can be directly transferred to the second carousel.

Device for inspecting filled and closed receptacles

In a process for the optical inspection of at least partially transparent containers in an inspection area with an illuminating device and a camera for producing images to be evaluated, the degree of transparency of each container is determined, and a light field is configured for this specific container. The light intensity of the light field and/or the imaging sensitivity is adapted to the determined degree of transparency, and the traveling light field is shifted through the inspection area in synchrony with the container. The system for implementing the process has an LED light screen with a plurality of LEDs, which can be activated individually or in groups, and a device upstream of the inspection area for measuring the individual degree of transparency of each container. These components are connected to a control unit, which produces the traveling light field for each container and shifts it in synchrony with the container. The control unit also adapts the light intensity of the traveling light field to the degree of transparency found for the container in question.

Process and system for the optical inspection of transparent containers

The optical checking method has the transparent container (B) illuminated by a light source, e.g. a LED light screen (D) in an inspection zone, with evaluation of the container image provided via an electronic camera. An individual transparency level is calculated for each container, with corresponding matching of the light intensity of the illumination light field or the imaging sensitivity of the camera. The illumination light field is provided by a light fleck used for scanning the container synchronous with its movement through the inspection zone. An Independent claim is also included for a transparent container optical checking device.

Transparent container optical checking method, has illumination light field intensity and/or imaging sensitivity matched to individual container transparency

PROBLEM TO BE SOLVED: To provide a method capable of always inspecting a transparent container with high accuracy regardless of a change of transparency. SOLUTION: In the method for optically inspecting an at least partially transparent container B in an inspection range using a luminaire and a camera 11 for forming an image for the purpose of evaluation, the transparency of the container is ascertained and, next, a light field is constituted for the container and the intensity of light and/or image forming sensitivity of the light field is adapted to the ascertained transparency and the light field is moved through the inspection range as a running light field in synchronous relation to the container.

Method and apparatus for optical inspecting transparent container

In a method for optical checking at least partially transparent container in an inspection area with a lighting device and a generating for evaluating pictures camera whose degree of transparency, a light box for each container is determined, then for this container configured, the light intensity of the light field or / and the imaging sensitivity of the detected degree of transparency and adapted to move the light field as a running light field in synchronism with the container through the inspection area. The apparatus for performing the method includes an LED luminescent screen with a plurality of LEDs can be activated individually or in groups to and upstream of the inspection area a measuring device for the individual degree of transparency of each container. These components are connected via a control unit that generates with the containers for each sequential illumination field and moved synchronously with the container and the light intensity of the moving light field is adapted to the respectively measured degree of transparency.

Peter Lindner

Papers

Process and system for the optical inspection of transparent containers

Transparent container optical checking method, has illumination light field intensity and/or imaging sensitivity matched to individual container transparency

Method and apparatus for optical inspecting transparent container

Device and method for optically inspecting transparent containers