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Proceedings Paper

Miniaturized optical speckle-based sensor for cursor control
Author(s): Steen G. Hanson; Michael L. Jakobsen; Henrik C. Petersen; Carsten Dam Hansen; Jørgen Stubager
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Paper Abstract

A miniaturized optical system based on spatial filtering for measuring speckle displacement will be discussed with special emphasis on shaping the speckle spectrum in order to enhance the signal. Applications for measuring linear object velocity - being it in one or two dimensions - and for probing angular velocities will be discussed. A miniaturized system has been developed for implementation in a single chip for measuring speckle displacement in two directions. The system is dedicated for cursor control and is in order to reduce cost based on the use of a single Vertical Cavity Surface Emitting Laser (VCSEL), a dedicated single-chip detector and signal processor and a molded polymer optical element performing the necessary optical processing.

Paper Details

Date Published: 15 September 2006
PDF: 6 pages
Proc. SPIE 6341, Speckle06: Speckles, From Grains to Flowers, 63411U (15 September 2006); doi: 10.1117/12.695469
Show Author Affiliations
Steen G. Hanson, Risø National Lab. (Denmark)
Michael L. Jakobsen, Risø National Lab. (Denmark)
Henrik C. Petersen, Risø National Lab. (Denmark)
Carsten Dam Hansen, Risø National Lab. (Denmark)
Jørgen Stubager, Risø National Lab. (Denmark)

Published in SPIE Proceedings Vol. 6341:
Speckle06: Speckles, From Grains to Flowers
Pierre Slangen; Christine Cerruti, Editor(s)

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