New tactile sensor based on holographic optical elements

Guenter Sommer; Stephan L. Leibbrandt; Christo G. Stojanoff

doi:10.1117/12.193954

9 November 1994 New tactile sensor based on holographic optical elements

Guenter Sommer, Stephan L. Leibbrandt, Christo G. Stojanoff

Proceedings Volume 2247, Sensors and Control for Automation; (1994) https://doi.org/10.1117/12.193954
Event: Optics for Productivity in Manufacturing, 1994, Frankfurt, Germany

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.

Citation Download Citation

Guenter Sommer, Stephan L. Leibbrandt, and Christo G. Stojanoff "New tactile sensor based on holographic optical elements", Proc. SPIE 2247, Sensors and Control for Automation, (9 November 1994); https://doi.org/10.1117/12.193954

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