EP 2243007 A4 20170301 - SYSTEM AND METHODS OF PHASE DIVERSITY WAVEFRONT SENSING
Title (en)
SYSTEM AND METHODS OF PHASE DIVERSITY WAVEFRONT SENSING
Title (de)
SYSTEM UND VERFAHREN ZUR PHASENDIVERSITÄTS-WELLENFRONTMESSUNG
Title (fr)
SYSTÈME ET PROCÉDÉS DE DÉTECTION DE FRONT D'ONDE DE DIVERSITÉ DE PHASE
Publication
Application
Priority
- US 2008081402 W 20081028
- US 98383007 P 20071030
- US 2887708 P 20080214
- US 4804208 P 20080425
Abstract (en)
[origin: WO2009058747A1] A phase diversity wavefront sensor includes an optical system including at least one optical element for receiving a light beam; a diffractive optical element having a diffractive pattern defining a filter function, the diffractive optical element being arranged to produce, in conjunction with the optical system, images from the light beam associated with at least two diffraction orders; and a detector for detecting the images and outputting image data corresponding to the detected images. In one embodiment, the optical system, diffractive optical element, and detector are arranged to provide telecentric, pupil plane images of the light beam. A processor receives the image data from the detector, and executes a Gerchberg- Saxton phase retrieval algorithm to measure the wavefront of the light beam.
IPC 8 full level
G01J 1/02 (2006.01); G01J 1/04 (2006.01); G01J 9/00 (2006.01)
CPC (source: EP)
G01J 9/00 (2013.01); G01J 2009/002 (2013.01); G01J 2009/0203 (2013.01)
Citation (search report)
- [Y] US 7232999 B1 20070619 - OTTEN III LEONARD JOHN [US], et al
- [A] WO 2004113856 A1 20041229 - UNIV HERIOT WATT [GB], et al
- [Y] BLANCHARD P M ET AL: "PHASE-DIVERSITY WAVE-FRONT SENSING WITH A DISTORTED DIFFRACTION GRATING", APPLIED OPTICS, OPTICAL SOCIETY OF AMERICA, WASHINGTON, DC; US, vol. 39, no. 35, 10 December 2000 (2000-12-10), pages 6649 - 6655, XP001017744, ISSN: 0003-6935, DOI: 10.1364/AO.39.006649
- [Y] SLIMANE DJIDEL ET AL: "High-speed, 3-dimensional, telecentric imaging", SCIENCE APPL. OPT. OPT. COMMUN OPT. LETT. OPT. EXPRESS OPT. EXPRESS OPT. EXPRESS OPT. EXPRESS JULY OPTICS EXPRESS, 4 September 2006 (2006-09-04), pages 82 - 86, XP055180342, Retrieved from the Internet <URL:http://www.opticsinfobase.org/DirectPDFAccess/553514A0-C23E-3DAA-BD02D64E50A149F6_97946/oe-14-18-8269.pdf?da=1&id=97946&seq=0&mobile=no> [retrieved on 20150331]
- See references of WO 2009058747A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2009058747 A1 20090507; AU 2008318889 A1 20090507; AU 2008318889 B2 20140123; CA 2713418 A1 20090507; CA 2713418 C 20160126; CA 2912003 A1 20090507; CA 2912003 C 20170718; EP 2243007 A1 20101027; EP 2243007 A4 20170301
DOCDB simple family (application)
US 2008081402 W 20081028; AU 2008318889 A 20081028; CA 2713418 A 20081028; CA 2912003 A 20081028; EP 08844854 A 20081028