EP 2195607 A1 20100616 - OPTICAL TEST METHOD
Title (en)
OPTICAL TEST METHOD
Title (de)
OPTISCHES PRÜFVERFAHREN
Title (fr)
PROCEDE DE TEST OPTIQUE
Publication
Application
Priority
KR 2007004807 W 20071002
Abstract (en)
[origin: WO2009044944A1] An optical test method acquires not only an image having a low regular reflection rate on a regular reflection surface, but also a peripheral image on which a peripheral lattice plane in the vicinity of a regular reflection surface is clearly seen, employs the acquired images, and improves the accuracy of a target image to be measured. The optical test method projects a lattice pattern on a target object on which a 3D image is formed, compares an optical signal modified by the shape of the target object with a reference pattern, and determines the presence or absence of a defect in the target object according to the comparison result.
IPC 8 full level
G01B 11/24 (2006.01)
CPC (source: EP)
G01B 11/2513 (2013.01)
Citation (search report)
See references of WO 2009044944A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2009044944 A1 20090409; CN 101815925 A 20100825; CN 101815925 B 20110824; EP 2195607 A1 20100616; JP 2010540955 A 20101224
DOCDB simple family (application)
KR 2007004807 W 20071002; CN 200780100955 A 20071002; EP 07833121 A 20071002; JP 2010527864 A 20071002