Contactless electronic alignment device has a bubble element and an image capture unit that images the bubble in a liquid containing tube, with the deviation in the bubble position used to generate an alignment signal

摘要

Contactless electronic alignment arrangement has a light source (208) that illuminates a container (202) and a bubble (214). A photosensor (204) is placed in a position aligned with the bubble at a defined distance from the container. The sensor captures a picture of the bubble after it has been illuminated with the light source. An image processing unit (206), which is electrically coupled to the photosensor, compares the center of gravity of the bubble in the image with a reference center of gravity and generates a corresponding electronic alignment signal. An independent claim is made for a method for measuring and or setting an alignment.