EP 1386183 A2 20040204 - A SYSTEM AND METHODS FOR FILTERING ELECTROMAGNETIC VISUAL, AND MINIMIZING ACOUSTIC TRANSMISSION
Title (en)
A SYSTEM AND METHODS FOR FILTERING ELECTROMAGNETIC VISUAL, AND MINIMIZING ACOUSTIC TRANSMISSION
Title (de)
SYSTEM UND VERFAHREN ZUR FILTERUNG ELEKTROMAGNETISCHER SICHTBARER UND MINIMIERUNG AKUSTISCHER TRANSMISSION
Title (fr)
SYSTEME ET PROCEDES DE FILTRAGE ET DE MINIMISATION DE TRANSMISSIONS ACOUSTIQUES ELECTROMAGNETIQUES, VISUELLES
Publication
Application
Priority
- US 0213735 W 20020503
- US 28807301 P 20010503
Abstract (en)
[origin: WO02091042A2] The invention describes a system and methods for filtering electromagnetic, visual, and minimizing acoustic transmissions. In particular, the anti-surveillance security system of the present invention can be readily configured by connecting a combination of filters to a transparent substrate, whereby the system has a shielding effectiveness between 22db - 40db in the frequency range of 30 megahertz - 3 gigahertz, an IR transmission at wavelengths between 780nm and 2500nm of no more than 50%, and a light transmission less than 1% for wavelengths up to 450nm.
IPC 1-7
IPC 8 full level
G02B 5/20 (2006.01)
CPC (source: EP)
G02B 5/208 (2013.01)
Citation (search report)
See references of WO 02091042A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02091042 A2 20021114; WO 02091042 A3 20030227; AU 2002256414 A1 20021118; EP 1386183 A2 20040204
DOCDB simple family (application)
US 0213735 W 20020503; AU 2002256414 A 20020503; EP 02725877 A 20020503