LIGHT SIGNAL DEFLECTING DEVICE FOR AN OPTICAL MEASURING SYSTEM FOR DETECTING OBJECTS, MEASURING SYSTEM, AND METHOD FOR OPERATING A LIGHT SIGNAL DEFLECTING DEVICE

摘要

The invention relates to a light signal deflecting device (26) for an optical measuring system for detecting objects in a monitoring region, to an optical measuring system, and to a method for operating a light signal deflecting device (26). The light signal deflecting device (26) comprises at least one deflecting element (32) which has at least one deflecting region (34) for deflecting light signals (22). The light signal deflecting device (26) additionally comprises at least one drive device (36), by means of which the at least one deflecting element (32) can be driven such that the at least one deflecting region (34) can be moved relative to the propagation axis (23) of each light signal (22) incident on the at least one deflecting region (34). At least one deflecting region (34) is at least partly curved. The deflecting element (32) is preferably a deflecting mirror (32) with a mirror surface (34) as a deflecting region for deflecting light signals. The mirror surface (34) is located on the side facing the transmission device (24). The mirror surface (34) is elliptically curved for example, and the mirror surface (34) is concave away from the transmission device (24) for example, i.e. in the direction of the transmitter light signals (22). The drive device (36) is a linear piezo motor for example which is connected to the deflecting mirror (32) such that the motor can move the deflecting mirror (32) and thus the mirror surface (34) along an imaginary line (38), for example a straight line. The deflecting mirror (32) has a null position I and a deflecting position II. The point of incidence at which a light signal is incident on the at least one deflecting region is modified by moving the deflecting element relative to the propagation axis of the light signal in a corresponding manner. As a result of the curvature of the at least one deflecting region, the same propagation axis is incident on different points of incidence at different angles of incidence by virtue of the movement of the deflecting element. In this manner, the light signal is deflected in a different manner according to the point of incidence.