RT Journal Article T1 Reflection optical encoders as three-grating moiré systems A1 Crespo Vázquez, Daniel A1 Alonso Fernández, José A1 Bernabeu Martínez, Eusebio AB Reflection optical encoders are studied as three-grating moiré systems. An analysis is made of the differences that may appear between it and the standard case in which an optical encoder is regarded as a two-grating system. PB The Optical Society Of America SN 1559-128X YR 2000 FD 2000-08-01 LK https://hdl.handle.net/20.500.14352/59235 UL https://hdl.handle.net/20.500.14352/59235 LA eng NO © Optical Society of America.This research was supported by a project from the Comisión Interministerial de Ciencia y Tecnología (CICYT) under grant TAP 98-0862. NO Comisión Interministerial de Ciencia y Tecnología (CICYT), España DS Docta Complutense RD 8 abr 2025