T-SCAN
Hand-held Triangulation Scanner for the
Digitization of 3D-Surfaces - Typical Applications
A visible laser is used for the high-speed scanning of a surface, measuring the distance between sensor and object for each surface point in the scan direction. Moving the sensor generates a complete set of surface coordinates which is displayed in real-time. A tracking system determines the sensor position in all 6 degrees of freedom, and thus enables the optimal positioning of the sensor and the online transformation of the measured coordinates into one coordinate system. The automatic point-to-point intensity control enables the easy handling with best accuracy on almost any optical surface without the need of changing the hardware or set-up. The 3D laser scanning system can be used on site in the production area or measurement facility and is robust for industrial use.
T-SCAN : 3D Laser Scanning on site!
The contactless, three-dimensional measurement of surface coordinates represents an important tool for the following industry areas: product development, reverse engineering, quality control, digital archiving and many others.
A significant improvement has been established with the mobile and easy-to-use, handheld triangulation scanner T-SCAN. One of the most important advantages of this system lies in the fact that 3d laser scanning of objects can be done on-site in the production area or in the measurement facilities without time-consuming measurement preparation. Having launched this innovative concept a few years ago, Steinbichler Optotechnik was the first company worldwide who transformed the idea of an optically tracked handscanner into a system solution for industrial use.
The intelligent, hand-held laserscanner T-SCAN can even be used by inexperienced staff. Like painting a surface with a paintbrush, the 3D laser scanner is moved over the object surface and acquires a high number of 3D coordinate points. To support an intuitive operation, the scanning process is displayed in real-time on the monitor.
T-SCAN - Effective and Precise 3D laser scanning / Digitizing
The scanner features a scan width of 90 mm, so even large objects can be quickly and easily digitized having the measurement data displayed in real-time during the scanning process. Thus, an intuitive operation is guaranteed. Using a laser source classified in laser class 2, no special safety precautions are necessary.
Due to a variably adjustable point density within a scan line, it is possible to capture contour lines automatically and with high accuracy. The automatic point-to-point intensity control of the laser beam ensures a high measuring accuracy even on surfaces with varying optical properties (glossy, matte, etc.) with the need of a special object preparation.
Owing to its high measuring accuracy, the T-SCAN 3D laser scanner is excellently suited for demanding tasks including the 3D digitization of large objects and quality control applications. By the determination of defined points using a touch probe, both the generation of a reference coordinate system and the online acquisition of polylines can easily be carried out.
T-SCAN: How it works?
A visible laser beam (670 nm, laser class 2), which is linearly orientated by a polygon mirror, captures the surface of the object to be measured with high scanning frequency. Using the triangulation principle, the measurement distance is calculated from the position on the object surface where the incident laser light is reflected back to the receiving optics. The exact spatial position of the scanner in all 6 degrees of freedom (6D: three spatial co-ordinates and three tilting angles) is determined by an optical tracking system which identifies at least three of the 29 infrared markers that are positioned on the scanner.
By moving the scanner, the object surface is completely captured. The measured 3D co-ordinates are displayed on the monitor in real-time. A pilot beam and LED´s on the back side of the scanner are used to guarantee the optimum distance during the scanner movement over the object surface.
T-SCAN - Typical Applications - Back to the Top
The following represents some typical sectors that the T-SCAN system can be used for:
- 3D Digitizing of design models (aerospace and automotive industry,
toys, furniture, electric appliances)
- Generation of machining data for the mold and tool making industry
- Using measuring data (pointcloud) as a basis for subsequent creation of CAD data (Reverse Engineering)
- Digitizing of immobile and sensitive objectsin art, restoration, and archaeology
- Quality control / inspection by comparison of the digitizing data with reference data
(master data v CAD data)
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