| 摘要 |
The invention relates to a method for optically determining a distance (A) between an opening (7) formed on a device (1) and a reference surface (8), having the following steps: illuminating the reference surface (8) through the opening (7) by means of at least one illuminating beam (17a, 17b), which passes through the opening (7) at an angle (α, -α'), capturing at least one image of the reference surface (8) through the opening (7), and determining the distance (A) using an offset (V) between a reference surface (8) region (22) illuminated by the illuminating beam (17a, 17b) and an edge contour (9) of the opening (7) in the at least one captured image. The invention also relates to a device (1) for optically determining the distance (A) between an opening (7) formed on the device (1) and a reference surface (8). The opening (7) can be formed in particular on a processing nozzle (6), and the reference surface (8) can be a workpiece surface. |
