| 摘要 |
The measuring apparatus serves for measuring the distance of an object from a measurement surface. The apparatus contains an illumination unit, which is preferably a laser. Furthermore the apparatus contains an optical image reproduction system with which a light ray projected onto the object by the illumination unit is imaged, after reflection, on an optical sensor. A two-dimensional charge-coupled semiconductor sensor should be used as optical sensor, which sensor has a plurality of electrodes arranged in the form of a matrix. To evaluate the position of the light spot-point of concentration on the image region of the charge-coupled semiconductor sensor all pulse trains should be evaluated which can be retrieved from illuminated electrode series. In this way a high resolution is achieved despite a relatively small number of electrodes in any one series. |
