ACOUSTIC LENS, AND ULTRASONIC SPEAKER USING IT

申请公布号：JP2006013903(A)

申请号：JP20040188350

申请日期：2004.06.25

申请公布日期：2006.01.12

申请人：

SEIKO EPSON CORP

发明人：FUKUI YOSHIKI

分类号：H04R1/34;H04R3/00

主分类号：H04R1/34

摘要：PROBLEM TO BE SOLVED: To provide an acoustic lens and an ultrasonic speaker using it which can maintain the lens shape for a long time, and reduce leakage of charged gas. SOLUTION: The acoustic lens 1 changes a travelling direction of an acoustic wave at a boundary plane between different gases separated by a rubber membrane 10, and is composed so that a shape for developing a lens function of the desired acoustic wave by supporting the rubber membrane 10 by a supporting structure 11. COPYRIGHT: (C)2006,JPO&NCIPI

MAISHAECKSLER

CONTROL DEVICE FOR INTAKE VALVE OF ENGINE

LIGHT FIXING TYPE THERMAL RECORDING MEDIUM

REGENERATING METHOD FOR THERMAL TRANSFER RECORDING MEDIUM

MUSIC REPRODUCER WITH INDICATION OF NAME OF MUSIC SELECTED FREELY

ANTI-THEFT APPARATUS FOR CAR

CARBON PASTE ELECTRODE

INFRARED LIGHT-EMITTING DIODE

INTAKE DEVICE FOR 4-CYCLE INTERNAL-COMBUSTION ENGINE

FORCEPT FOR ENDOSCOPE

OPTICAL ARTICLE HAVING CONDUCTIVE ANTI-REFLECTION COATING

ADHESION FOR LAMINATE ASSEMBLY

MANUFACTURE OF ELASTIC PLASTIC COMPOSITION

RECORDER

REGENERATING METHOD OF CHEMICAL TRAP

MOUNT DEVICE FOR DOCUMENT FEEDER IN COPYING MACHINE

SPRING ACTED HOOK APPARATUS

CONNECTOR AND INSTALLATION FOR SCAFFOLD

MANUFACTURE OF FIBER REINFORCED CYLINDRICAL MOLDED ITEM WITH FOAMED UNSATURATED POLYESTER RESIN LAYER

OPTICAL FIBER CORE