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Proceedings Paper

New tactile sensor based on holographic optical elements
Author(s): Guenter Sommer; Stephan L. Leibbrandt; Christo G. Stojanoff
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Paper Abstract

A novel tactile sensor that utilizes the deformation of a holographic membrane is presented. The deformation changes the diffraction efficiency which results in an intensity coded signal that can be measured very precisely. In this paper we present the principle, the experimental set-up, and the mode of operation of the sensor. The aim of this research is to construct a prototype sensor with an array of 8 X 8 taxels each 1.5 X 1.5 mm2 in size. The total area of the sensor is about 1.5 cm2. The sensitivity of each taxel is 0.01 N with an operating range of 10 N. The final tactile sensor consists of the following components: a holographic membrane (the actual sensor element), a stiff support defining the grasping plane and a thin film that transmits the grasping forces. To determine the deformation a laser diode illuminates the holographic sensor membrane and a CCD detects the non-diffracted light.

Paper Details

Date Published: 9 November 1994
PDF: 11 pages
Proc. SPIE 2247, Sensors and Control for Automation, (9 November 1994); doi: 10.1117/12.193954
Show Author Affiliations
Guenter Sommer, RWTH Aachen (Germany)
Stephan L. Leibbrandt, RWTH Aachen (Germany)
Christo G. Stojanoff, RWTH Aachen (Germany)

Published in SPIE Proceedings Vol. 2247:
Sensors and Control for Automation
Markus Becker; R. W. Daniel; Otmar Loffeld, Editor(s)

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