发明名称 Projection screen with sound radiating segments
摘要 The projection screen (10) has a projection plane (30) formed of segments (11). At least one segment is a sound radiator segment (11') for emitting sound waves from the projection plane. The segments are connected to each other by connecting elements on their edges. The segments are formed of a core layer and a covering layer. The low-frequency segments are arranged in the middle of the projection screen.
申请公布号 DE19821624(A1) 申请公布日期 1999.11.18
申请号 DE19981021624 申请日期 1998.05.15
申请人 NOKIA (DEUTSCHLAND) GMBH 发明人 BACHMANN, WOLFGANG;KRUMP, GERHARD;REGL, HANS-JUERGEN
分类号 G03B21/56;H04R7/04;(IPC1-7):G03B21/56;G03B21/54;H04R9/06 主分类号 G03B21/56
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