SURVEYING INSTRUMENT FOR SCANNING AN OBJECT AND IMAGE ACQUISITION OF THE OBJECT

• Main Authors: SCHRÖDER, Marco, SCHWENDENER, Andreas, SEIFERT, Benjamin, WALSER, Bernd
• Format: Patent
• Language: English; French; German
• Published: 09.01.2019
• Subjects: GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

Surveying device (1), in particular laser scanner, which comprises a base (2) which defines a base axis (A), a support structure (3) which defines a rotation axis (B) a light emitting unit for emitting measuring light (5), a light receiving unit comprising a detector for detecting reflected measuring light (5) and a rotation unit (10) mounted on the support structure (3). The rotation unit (10) comprises a rotation body (11) which is mounted rotatable around the rotation axis (B) and the rotation body (11) comprises at least one scanning mirror (12) which is arranged tilted relative to the rotation axis (B) and provides defined deflection of the measuring light (5). The surveying device comprises an imaging unit (15) and a controlling and processing unit. The rotation body (11) comprises a curved deflecting element (13) different from the scanning surface. The imaging unit (15) comprises at least one camera sensor which is fixedly arranged with the support structure (3) so that an optical axis of the camera sensor is directed towards the rotation body (11). The imaging unit (15) and the rotation body (11) are designed so and arranged relative to each other so that only in a predetermined imaging-alignment of the rotation body (11) around the rotation axis (B) the optical axis of the at least one camera sensor is deflected by the curved deflecting element (13) by a desired angle and direction and a field of view of the at least one camera sensor is deflected and defined by the deflection of the optical axis so that the field of view comprises a defined field angle around the rotation axis (B).