Dimensional inspection process of medical ampules

Details Dimensional inspection process of medical ampules Dimensional inspection process of medical ampules

G - Physics

01

N

G01N 21/90 (2006.01) G01B 11/00 (2006.01) G01B 11/02 (2006.01) G01B 11/24 (2006.01)

Patent

CA 2084666

To carry out an entirely automatic dimensional inspection process of medi- cal ampules, the ampules (1) are cyclically transported in the horizontal position on a chain conveyor (30) through an opto-electronic inspection station (10). The ampules are lifted from the chain conveyor to be inspected and illuminated bytransmitted light in a direction normal to their longitudinal axis by a diffuse light- ing source (11). In the case of OPC-ampules, the ampule is retated around its lon- gitudinal axis during inspection. The light that shines through the ampule is repro- duced on the opto-electronic converter (photodiode line) of a camera system (12) which converts the reproductions into electric video signals. These video signals are evaluated on the basis of the intensity variations caused by the inspected am- pule, in order to generate measurement values for the desired ampule dimensions as well as, if necessary, for deviations from the standard ampule dimensions.

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