EP 1993816 A1 20081126 - METHOD FOR PRODUCING DEFECT-FREE LIGHT GUIDING ELEMENTS OF GREAT WIDTHS, PRODUCTION DEVICE AND DIFFRACTIVE LIGHT GUIDING ELEMENT
Title (en)
METHOD FOR PRODUCING DEFECT-FREE LIGHT GUIDING ELEMENTS OF GREAT WIDTHS, PRODUCTION DEVICE AND DIFFRACTIVE LIGHT GUIDING ELEMENT
Title (de)
VERFAHREN ZUR HERSTELLUNG VON DEFEKTFREIEN LICHTLENKELEMENTEN GROSSER BREITE, VORRICHTUNG ZUR HERSTELLUNG UND DIFFRAKTIVES LICHTLENKELEMENT
Title (fr)
PROCEDE DE FABRICATION D'UN ELEMENT SANS DEFAUT GUIDANT LA LUMIERE, DE GRANDE AMPLITUDE, DISPOSITIF POUR LA FABRICATION ET ELEMENT DE DIFFRACTION GUIDANT LA LUMIERE
Publication
Application
Priority
- EP 2007002263 W 20070314
- DE 102006011949 A 20060315
Abstract (en)
[origin: WO2007104555A1] A description is given of a method for producing a diffractive light guiding element by a continuous, single-stage reel-to-reel method, which comprises the following steps: a) applying a photosensitive coating composition to a flexible backing web, b) drying the coating composition, c) laminating on a flexible mask, d) exposing the coating composition through the mask in order to produce a refractive index gradient in the coating composition by the pattern-like exposure, and e) full-area curing of the coating composition in order to fix the refractive index gradient. This method can be used for producing high-value diffractive light guiding elements that are virtually free from inclusions or bubbles. Moreover, webs of very great widths can be produced. The light guiding elements are suitable for example for large-format applications, such as for example projection screens, projection TV or large-format LCD TV displays.
IPC 8 full level
B29D 11/00 (2006.01); B29C 39/14 (2006.01); B29C 39/18 (2006.01); G02B 5/18 (2006.01); G03F 7/00 (2006.01); G03F 7/20 (2006.01)
CPC (source: EP KR US)
B29C 39/148 (2013.01 - EP US); B29C 39/18 (2013.01 - EP US); B29D 11/0074 (2013.01 - EP US); G02B 5/02 (2013.01 - KR); G02B 5/1857 (2013.01 - EP US); G03F 7/001 (2013.01 - EP US); B29K 2995/0031 (2013.01 - EP US); B29L 2011/0016 (2013.01 - EP US)
Citation (search report)
See references of WO 2007104555A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102006011949 A1 20070920; CN 101405130 A 20090408; EP 1993816 A1 20081126; EP 2347892 A2 20110727; JP 2009529713 A 20090820; JP 5132580 B2 20130130; KR 101361914 B1 20140213; KR 20090003232 A 20090109; US 2009091833 A1 20090409; US 8277905 B2 20121002; WO 2007104555 A1 20070920
DOCDB simple family (application)
DE 102006011949 A 20060315; CN 200780009290 A 20070314; EP 07723266 A 20070314; EP 11157510 A 20070314; EP 2007002263 W 20070314; JP 2008558717 A 20070314; KR 20087022564 A 20070314; US 22498907 A 20070314