OPTICAL DISTANCE MEASURING DEVICE

• Main Authors: SCHMIDTKE, BERND, WOLST, OLIVER, EISELE, ANDREAS
• Format: Patent
• Language: English
• Published: 01.05.2015
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; GYROSCOPIC INSTRUMENTS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SURVEYING; TESTING

Described herein is a measuring device (10) for optical distance measurement', particularly a hand-held measuring device. The measuring device (10) includes an emitter device (12) for emitting optical measuring beam (13) towards a target object (15), a capturing device (14) having a detection surface (110) for detecting an optical measuring beam (16) returned by the target object (15), and an evaluation device (36). The detection surface (110) has a plurality of pixels (111), where each pixel (111) has at least one SPAD (single photon avalanche diode, 101), and each of the plurality of pixels (111) is connected to the evaluation device (36). The emitter device (12) and the capturing device (14) are configured in such a manner that the optical measuring beam (16) returned by the target object (15) simultaneously illuminates a plurality of pixels (111). Further, the evaluation device (36) is configured to determine a distance (48) between the measuring device (10) and the target object (15) based on an evaluation of detection signals of the plurality of pixels (111). Fig. 6