RT Journal Article
T1 Zero reference signal for displacement measuring systems by use of speckle
A1 Pérez Quintián, Fernando
A1 Alonso Fernández, José
A1 Atencia Carrizo, Jesús
A1 Bernabeu Martínez, Eusebio
AB An optical method for generating a reference signal for an incremental displacement measurement system is proposed. We achieved this zero reference signal by comparing two speckle patterns arriving from two symmetric diffusers, which are used as natural random codes that are identical only when the reading head is located equidistantly between the diffusers. The comparison of the speckles is obtained either by interference, as in a Michelson interferometer, or by intensity correlations.
PB The Optical Society Of America
SN 1559-128X
YR 2003
FD 2003-12-01
LK https://hdl.handle.net/20.500.14352/51207
UL https://hdl.handle.net/20.500.14352/51207
LA eng
NO © 2003 Optical Society of America.We thank M. Quintanilla for useful comments and discussions. This research has been supported by projects DPI 2001-1238 and DPI 2001-1369 of the Spanish Ministry for Science and Technology.
NO Ministerio de Ciencia y Tecnología (MCYT), España
DS Docta Complutense
RD 6 abr 2025