EP 1189481 B1 20050608 - Headphones without radiation
Title (en)
Headphones without radiation
Title (de)
Strahlungsarmer Kopfhörer
Title (fr)
Casque d'écoute sans radiation
Publication
Application
Priority
DE 10045177 A 20000913
Abstract (en)
[origin: US2002066617A1] The invention relates to a low-radiation headphone with right and left acoustic irradiation housings corresponding to the ears of the user, with each of the housings having an acoustic baffle (10'') comprising MU-metal and accommodating dynamic audio transducers. The acoustic baffle (10'') is formed in a manner permeable to sound in front of the audio transducers, and has a radiation dissipation zone (20) pointing at the temples of the user. The zone (20) dissipating radiation is provided through a greater density of the MU-metal than in the remaining area of the acoustic baffle (10'') that is permeable to sound. The acoustic baffle (10'') as a whole consists of MU-metal sheet and the audio transducer is perforated in one area (17), but otherwise solid. The radiation dissipation zone (20) is formed in the perforated area of the MU-metal sheet as one piece.
IPC 1-7
IPC 8 full level
H04R 1/10 (2006.01); H04R 5/033 (2006.01)
CPC (source: EP US)
H04R 1/1075 (2013.01 - EP US); H04R 1/1008 (2013.01 - EP US)
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)
US 2002066617 A1 20020606; US 6554097 B2 20030429; AT E297648 T1 20050615; EP 1189481 A2 20020320; EP 1189481 A3 20031105; EP 1189481 B1 20050608
DOCDB simple family (application)
US 95127201 A 20010913; AT 01122030 T 20010913; EP 01122030 A 20010913