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Proceedings Paper

Customer-design approach in development of LED array-based range-imaging sensors: applications case studies
Author(s): Janusz A. Marszalec
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Paper Abstract

An angular scan triangulation range imaging sensor using an integrated array of light-emitting diodes (LEDs) and a lateral-effect position-sensing detector is described in the paper. A range map is obtained by means of fast electronic scanning of the LEDs of the array. No moving parts are needed for the scanning. The sensor can be designed according to the customer needs. Two application cases of specially developed devices are studied. In one case the sensor is used for profile measurements of cylindrical objects. For a paper roll placed at a distance of about 2 m, the diameter from 600 mm to 1100 mm was estimated with the accuracy better than 2 percent. A more compact version of the sensor was manufactured and tested for metal surface orientation measurements in surface treatment robot application. The sensor was placed in the robot end effector to perform angle measurements and surface profile determination for obstacle detection and collision avoidance. The cases presented show that the customer-design approach based on geometrical modeling of the sensor sensitive volume is a good solution for designing the sensor according to specific application needs.

Paper Details

Date Published: 19 August 1997
PDF: 10 pages
Proc. SPIE 3101, New Image Processing Techniques and Applications: Algorithms, Methods, and Components II, (19 August 1997); doi: 10.1117/12.281288
Show Author Affiliations
Janusz A. Marszalec, VTT Electronics (Finland)


Published in SPIE Proceedings Vol. 3101:
New Image Processing Techniques and Applications: Algorithms, Methods, and Components II
Philippe Refregier; Rolf-Juergen Ahlers, Editor(s)

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