EP 1606078 B1 20110803 - METHOD FOR TRIMMING A SPECTACLE LENS
Title (en)
METHOD FOR TRIMMING A SPECTACLE LENS
Title (de)
VERFAHREN ZUM AUSSENKONTURFRÄSEN EINES BRILLENGLASES
Title (fr)
PROCEDE DE DETOURAGE D UN VERRE DE LUNETTE
Publication
Application
Priority
- FR 2004000720 W 20040324
- FR 0303764 A 20030327
Abstract (en)
[origin: US2007097525A1] A method of trimming a lens held between two clamping pads, and the lens periphery is ground away following a controlled trajectory having a programmed terminal portion that corresponds to the desired lens shape, which includes the method comprising: while in a lightly clamped condition, taking first measurements of a plurality of points belonging to a face of the lens and measuring the coordinates of points forming the trace of the rim on the face; while in a tightly clamped condition, taking second measurements of another plurality of points of the face of the lens; making an approximate mathematical representation of the face of the lens for each of the two clamping conditions; and calculating the coordinates of the deformed outline of the lens on the face in the second clamping condition in order to correct the programmed terminal portion of the grinding trajectory.
IPC 8 full level
B24B 9/14 (2006.01); B23Q 11/00 (2006.01); B24B 41/06 (2012.01); B24B 47/22 (2006.01)
CPC (source: EP KR US)
B24B 9/14 (2013.01 - KR); B24B 9/148 (2013.01 - EP US); B24B 41/06 (2013.01 - EP US); B24B 47/22 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2007097525 A1 20070503; US 7253974 B2 20070807; AT E518621 T1 20110815; CN 100443261 C 20081217; CN 1764518 A 20060426; EP 1606078 A1 20051221; EP 1606078 B1 20110803; FR 2852877 A1 20041001; FR 2852877 B1 20050506; JP 2006514584 A 20060511; JP 4050766 B2 20080220; KR 100707944 B1 20070413; KR 20060005347 A 20060117; WO 2004087373 A1 20041014
DOCDB simple family (application)
US 55123704 A 20040324; AT 04742330 T 20040324; CN 200480008198 A 20040324; EP 04742330 A 20040324; FR 0303764 A 20030327; FR 2004000720 W 20040324; JP 2005518717 A 20040324; KR 20057018050 A 20050926