EP 3247519 A1 20171129 - METHOD AND DEVICE FOR MANUFACTURING A FRESNEL FREEFORM SURFACE SUPERPOSED ON A PLANAR OR CURVED AREA
Title (en)
METHOD AND DEVICE FOR MANUFACTURING A FRESNEL FREEFORM SURFACE SUPERPOSED ON A PLANAR OR CURVED AREA
Title (de)
VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG EINER FRESNELISIERTEN FREIFORMOBERFLÄCHE, DIE AUF EINE PLANARE ODER GEKRÜMMTE FLÄCHE SUPERPONIERT IST
Title (fr)
PROCÉDÉ ET DISPOSITIF DE FABRICATION D'UNE SURFACE GAUCHE FRESNELLISÉE ET SUPERPOSÉE SUR UNE SURFACE PLANE OU INCURVÉE
Publication
Application
Priority
- DE 102015000673 A 20150123
- DE 2016000006 W 20160108
Abstract (en)
[origin: WO2016116089A1] The invention relates to a method and a device for ultra-precision machining of a Fresnel lens describing a rotationally asymmetrical optical free-form surface superposed on a planar or curved area. In order to achieve said aim, the Fresnel lens is manufactured by having a diamond tool perform turning and planing operations.
IPC 8 full level
B23B 1/00 (2006.01); B23B 5/36 (2006.01); B24B 13/00 (2006.01)
CPC (source: EP)
B23B 1/00 (2013.01); B23B 5/36 (2013.01); B23B 27/20 (2013.01)
Citation (search report)
See references of WO 2016116089A1
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 2016116089 A1 20160728; DE 102015000673 A1 20160728; DE 112016000441 A5 20171109; EP 3247519 A1 20171129
DOCDB simple family (application)
DE 2016000006 W 20160108; DE 102015000673 A 20150123; DE 112016000441 T 20160108; EP 16711961 A 20160108