EP 3881041 A1 20210922 - SYSTEM AND METHODS FOR AUTOMATED EVALUATION OF GLASS-BASED SUBSTRATES FOR BIREFRINGENCE DEFECTS
Title (en)
SYSTEM AND METHODS FOR AUTOMATED EVALUATION OF GLASS-BASED SUBSTRATES FOR BIREFRINGENCE DEFECTS
Title (de)
SYSTEM UND VERFAHREN ZUR AUTOMATISCHEN AUSWERTUNG VON SUBSTRATEN AUF GLASBASIS FÜR DOPPELBRECHUNGSFEHLER
Title (fr)
SYSTÈME ET PROCÉDÉS D'ÉVALUATION AUTOMATISÉE DE SUBSTRATS À BASE DE VERRE POUR DES DÉFAUTS DE BIRÉFRINGENCE
Publication
Application
Priority
- US 201862767217 P 20181114
- US 201962791976 P 20190114
- US 2019061283 W 20191113
Abstract (en)
[origin: WO2020102425A1] Systems and methods for evaluating glass-based substrates for birefringence defects are disclosed. In a one embodiment, a method includes generating an image of the at least one glass-based substrate, and determining at least one transmission curve, wherein the transmission curve plots transmission values versus position along the at least one line. The method further includes determining a defect metric from the at least one transmission curve. The method also includes comparing the defect metric to at least one standard.
IPC 8 full level
G01J 4/00 (2006.01); G01N 21/23 (2006.01); G01N 21/896 (2006.01); G01N 21/958 (2006.01)
CPC (source: EP KR)
G01N 21/23 (2013.01 - EP KR); G01N 21/8806 (2013.01 - KR); G01N 21/8851 (2013.01 - KR); G01N 21/896 (2013.01 - KR); G01N 21/958 (2013.01 - EP KR); G06T 7/0004 (2013.01 - KR); G01N 21/896 (2013.01 - EP); G01N 2021/8887 (2013.01 - KR)
Citation (search report)
See references of WO 2020102425A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020102425 A1 20200522; CN 113272633 A 20210817; EP 3881041 A1 20210922; JP 2022508111 A 20220119; KR 20210089227 A 20210715; TW 202037892 A 20201016
DOCDB simple family (application)
US 2019061283 W 20191113; CN 201980088409 A 20191113; EP 19829356 A 20191113; JP 2021526302 A 20191113; KR 20217017444 A 20191113; TW 108141403 A 20191114