Device for detecting surface flaws of rapidly moving sheet material
AssigneeHoesch Werke Aktiengesellschaft
InventorsH. J. Kopineck, Wilhelm Tappe
Life of this patent
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Abstract
A device for detecting surface flaws of rapidly moving metal strip in rolling mills includes a lens which scans the sheet material surface and a camera tube which converts optical images of the lens into electrical values. These values are stored in a magnetic storage and are called out to be converted and displayed on an image reproducing device as a visible image. At least one image amplifier or image converter tube is interposed between the lens and the camera tube and includes an electronic speed shutter.
Claims12
Device for detecting surface flaws of rapidly moving sheet material, particularly of metal strip in rolling mills, comprising lens means for scanning the sheet material surface;
- a camera tube for converting optical images received by said lens means into electrical values;
- a magnetic storage connected with said camera tube to receive said electrical values therefrom;
- an image reproducing device connected with said storage to receive the stored values therefrom and convert them into a visible image;
- and at least one image amplifier tube means interposed between said lens means and camera tube and including an electronic speed shutter for interrupting plate voltage of said image amplifier tube means, said electronic speed shutter being built into said image amplifier tube means.
Dependencies are inferred from the claim text.