Global Patent Index - EP 0885376 B8

EP 0885376 B8 20070228 - OPTICAL ENCODER FOR DRIVING AN ELECTRIC MOTOR

Title (en)

OPTICAL ENCODER FOR DRIVING AN ELECTRIC MOTOR

Title (de)

OPTISCHER KODIERER ZUM BETREIBEN EINES ELEKTROMOTORS

Title (fr)

APPAREIL DE CODAGE OPTIQUE POUR ACTIONNER UN MOTEUR ELECTRIQUE

Publication

EP 0885376 B8 20070228 (EN)

Application

EP 96908483 A 19960227

Priority

  • US 9602275 W 19960227
  • US 39447395 A 19950227

Abstract (en)

[origin: US5665965A] Optical encoder apparatus and methods are provided for converting the cyclic motion of an electro-mechanical machine, such as an electric motor, into at least one electrical signal having a predetermined waveform. The apparatus may include at least one photo-detector which is responsive to at least one pattern of incident radiant energy. An optically programmed system is optically aligned with the detector, and configured to be actuated by the cyclic motion of the machine. The system modifies at least one pattern of incident radiant energy at the detector, in a plurality of directions, in accordance with an optical function which includes graphical function. The graphical function may be a transform of a waveform function. The system includes an optical element, such as an optical encoder disc, which contains at least one optically detectable graphical pattern. The system also includes a mask containing at least one aperture which permits a pattern of radiant energy to pass to the detector. The energy at the photo-detector is converted into an electrical signal having a predetermined waveform.

IPC 8 full level

G01D 5/347 (2006.01); H02J 7/02 (2006.01); B60L 3/00 (2006.01); B60L 11/18 (2006.01); G01D 5/34 (2006.01); G01D 5/36 (2006.01); G01P 3/486 (2006.01); H01M 10/48 (2006.01); H02J 3/38 (2006.01); H02J 7/00 (2006.01); H02K 29/10 (2006.01)

CPC (source: EP US)

G01D 5/3473 (2013.01 - EP US); G01D 5/36 (2013.01 - EP US); G01P 3/486 (2013.01 - EP US)

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

WO 9627118 A1 19960906; AT E349681 T1 20070115; CA 2247353 A1 19960906; CA 2247353 C 20010814; CN 1256571 C 20060517; CN 1501051 A 20040602; CN 1982851 A 20070620; CN 1982851 B 20120815; DE 69636794 D1 20070208; DE 69636794 T2 20071011; EP 0885376 A1 19981223; EP 0885376 A4 20010912; EP 0885376 B1 20061227; EP 0885376 B8 20070228; JP 2008118853 A 20080522; JP 4377427 B2 20091202; US 5665965 A 19970909

DOCDB simple family (application)

US 9602275 W 19960227; AT 96908483 T 19960227; CA 2247353 A 19960227; CN 200310103682 A 19960227; CN 200610074109 A 19960227; DE 69636794 T 19960227; EP 96908483 A 19960227; JP 2007314021 A 20071204; US 71162996 A 19960905