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OwnerBurkhard Altekruger, Joachim Aufreiter +2inventors
InventorsBURKHARD ALTEKRUGER, JOACHIM AUFREITER, DIETER BRUSS, KLAUS KALKOWSKI
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A device and process for the determination of the diameters of a crystal that is pulled from a liquified material. In this connection several video cameras are provided, each of which reproduces its own section along the vertical axis of the crystal or in a direction vertical to it. The angles of image of the camera are laid out in such a way that the object to be reproduced completely fills the entire picture plane - - - at least in one direction. For objects with a small diameter; e.g., the crystal neck, a camera with a small angle of image is used, while for objects with a large diameter; e.g., the crystal body, a camera with a large angle of image is used.
A device for determining the diameters of a crystal that is pulled from a liquified material, comprising a plurality, of cameras for the reproduction of m areas of the crystal, whereby m≧2, wherein said cameras have angles of the image (γ, δ) matched to each of the areas of the crystal reproduced by them.
A process for the determination of the diameter of a crystal that is pulled from a liquified material, using an evaluation control unit comprising the following steps:
Dependencies are inferred from the claim text.