EP 2198337 A2 20100623 - IMAGING SYSTEM WITH WAVEFRONT MODIFICATION AND METHOD OF INCREASING THE DEPTH OF FIELD OF AN IMAGING SYSTEM
Title (en)
IMAGING SYSTEM WITH WAVEFRONT MODIFICATION AND METHOD OF INCREASING THE DEPTH OF FIELD OF AN IMAGING SYSTEM
Title (de)
ABBILDUNGSSYSTEM MIT WELLENFRONTMODIFIKATION UND VERFAHREN ZUR ERHÖHUNG DER FELDTIEFE EINES ABBILDUNGSSYSTEMS
Title (fr)
SYSTEME D'IMAGERIE A MODIFICATION DE FRONT D'ONDE ET PROCEDE D'AUGMENTATION DE LA PROFONDEUR DE CHAMP D'UN SYSTEME D'IMAGERIE
Publication
Application
Priority
- FR 2008051847 W 20081010
- FR 0707177 A 20071012
Abstract (en)
[origin: WO2009053634A2] An imaging system (10) comprises an objective (1), an image detector (2) placed in an image plane of the objective, and a calculation unit (3) intended for executing a digital processing of an image captured by the detector. The objective is suitable for modifying a wavefront of a radiation which enters the system, so that an illumination on the detector which is produced by a source of the radiation is constant for a large interval of variation of a distance of separation of the source from the objective. The depth of field of the system is thus increased, and the calculation unit can be simplified by using a constant filter. The modification of the wavefront is created by a profile which is invariant under any rotations about the optical axis of the objective.
IPC 8 full level
G02B 27/00 (2006.01); H04N 23/40 (2023.01)
CPC (source: EP US)
G02B 27/0012 (2013.01 - EP US); G02B 27/0075 (2013.01 - EP US)
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
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
FR 2922324 A1 20090417; FR 2922324 B1 20101008; CA 2701151 A1 20090430; EP 2198337 A2 20100623; IL 204840 A0 20101130; IL 204840 A 20140130; US 2010277594 A1 20101104; WO 2009053634 A2 20090430; WO 2009053634 A3 20090618
DOCDB simple family (application)
FR 0707177 A 20071012; CA 2701151 A 20081010; EP 08841316 A 20081010; FR 2008051847 W 20081010; IL 20484010 A 20100406; US 68154808 A 20081010