| 主权项 |
1. Method for determining the distance from a light beam (10) to a point (12) on a surface of an object (14) by means of a light sensor (16) with a planar measuring field (18), comprising the following steps:
(A) Positioning of the measuring field (18) such that the light beam (10) strikes the measuring field (18), (B) Pivoting of the measuring field (18) about a first pivot axis (22), which runs parallel to and at a distance from the light beam (10), and pivoting of the measuring field about at least one second pivot axis (20) while the measuring field is pivoted about the first pivot axis (22), wherein the second pivot axis (20) is skew to the light beam (10), wherein the measuring field (18) is pivoted about the common point of intersection (24) of the second pivot axis (20) and the first pivot axis (22) when pivoting, which has a predefined position relative to the point (12) on the object surface (14), and wherein, when pivoting about the second pivot axis (20), a pivot position in which the light beam (10) is oriented perpendicularly to the measuring field (18) is traversed at least three times, (C) Capturing of the positions of the point of light (26) of the light beam (10) on the measuring field (18) by the light sensor (16), which the point of light (26) assumes on the measuring field (18) during pivoting in accordance with Step B, (D) Determining of the positions among those captured in step C which describe on the measuring field (18) a circular arc (28) having a distance to the point of intersection (24) less than the distance between the point of intersection (24) and the other positions captured in step C, and (E) Determining of the distance between the light beam (10) and the point (12) on the object surface (14) on the basis of the path of the circular arc (28) in accordance with step D and the predefined position relative to the point (12) on the object surface (14). |
