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Proceedings Paper

Low-cost high-resolution diffractive position sensors for X-by-wire applications
Author(s): L. Tupinier; O. Marroux; M. Ndao; B. Kress; P. Meyrueis
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Paper Abstract

We are proposing a novel method to implement high resolution optical position sensors for automotive and other applications. Grating diffractive incremental encoders (both linear and rotation) are already becoming commodity products now, and include a read-out grating and a ruling grating [3]. We are implementing out high resolution incremental and/or absolute position encoders with a single diffractive substrate, replicated in mass in plastic. The diffractive structures are here much more complex than standard linear gratings. These new optical position sensors can achieve high absolute resolution without need of electronic interpolation, therefore being potentially very fast and accurate. Furthermore, due to the nature of these diffractive optical elements (surface relief elements), they are very cheaply replicated in mass by either polymers embossing or injection moulding.

Paper Details

Date Published: 21 April 2006
PDF: 8 pages
Proc. SPIE 6198, Photonics in the Automobile II, 61980D (21 April 2006); doi: 10.1117/12.669780
Show Author Affiliations
L. Tupinier, Société DELPHI Mechatronics (France)
O. Marroux, Société DELPHI Mechatronics (France)
M. Ndao, Univ. Louis Pasteur (France)
B. Kress, Univ. Louis Pasteur (France)
P. Meyrueis, Univ. Louis Pasteur (France)


Published in SPIE Proceedings Vol. 6198:
Photonics in the Automobile II
Patrick P. Meyrueis; Thomas P. Pearsall, Editor(s)

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