Title (en)
Aberration estimating method, program, and image-pickup apparatus
Title (de)
Aberrationsschätzungsverfahren, Programm, und Bilderfassungsvorrichtung
Title (fr)
Procédé d'évaluation d'aberration, programme et appareil de capture d'image
Publication
EP 2708950 A2 20140319 (EN)
Application
EP 13183088 A 20130905
Priority
JP 2012201462 A 20120913
Abstract (en)
An aberration estimating method using a steepest descent method is configured to estimate, as an aberration of a test optical system (105),
an aberration when a predetermined evaluation function becomes less than or equal to a permissible value. The aberration estimating method
comprising the step (S209) of updating the aberration with a sum of a current aberration and a first derivative of the evaluation function by the
aberration when the evaluation function is larger than the permissible value. The aberration is an aberration of an entire pupil plane of the test optical
system. The updating step includes calculating the first derivative by Fourier-transforming the difference instead of an integration at coordinates of
respective points on an image plane of the test optical system.
Inventor
YAMAZOE KENJI (JP)
Applicant
CANON KK (JP)
IPC 8 full level (invention and additional information)
G03F 7/20 (2006.01); G01M 11/02 (2006.01)
CPC (invention and additional information)
G01M 11/0257 (2013.01); G03F 7/706 (2013.01)
Citation (applicant)
• JP 2007163461 A 20070628 - OLYMPUS CORP
• D. RUSSELL LUKE; JAMES V. BURKE; RICHARD G. LYON: 'Optical Wavefront Reconstruction: Theory and Numerical Methods,
Usa, Siam Review', vol. 44, 2002, SOCIETY OF INDUSTRIAL AND APPLIED MATHEMATICS pages 169 - 224
• R. MIYAKAWA; P. NAULLEAU; A. ZAKHOR; K. GOLDBERG: 'Iterative Procedure for In-situ Optical Testing with an Incoherent
Source' PROCEEDINGS OF SPIE, (USA) SPIE PRESS vol. 7636, 2010, pages 76361K - 1,76361K-7
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
EPO simple patent family
EP 2708950 A2 20140319; JP 2014055882 A 20140327; US 2014071261 A1 20140313; US 9228921 B2 20160105
INPADOC legal status
2015-10-28 [18W] WITHDRAWN
- Effective date : 20150918
2014-03-19 [AK] DESIGNATED CONTRACTING STATES:
- Kind Code of Ref Document : A2
- Designated State(s) : 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
2014-03-19 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO
- Countries concerned : BA ME