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Class Information
Number: 181/176
Name: Acoustics > Sound-modifying means > Lens
Description: Subject matter wherein a structure is placed in front of an acoustic wave device having an aperture which inserts a phase delay over the cross section of the aperture so as to effect a convergence or divergence of acoustic waves from the acoustic wave device.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8702612 Catheter for three-dimensional intracardiac echocardiography and system including the same Apr. 22, 2014
8672088 Phase plug and acoustic lens for direct radiating loudspeaker Mar. 18, 2014
8616329 Air coupled acoustic aperiodic flat lens Dec. 31, 2013
8596410 Solid-state acoustic metamaterial and method of using same to focus sound Dec. 3, 2013
8442242 Acoustic reflector May. 14, 2013
8418802 Phase plug and acoustic lens for direct radiating loudspeaker Apr. 16, 2013
8300303 Acoustically focused optical lens Oct. 30, 2012
8290195 Acoustic radiation pattern adjusting Oct. 16, 2012
8256568 Protective sleeve having an external sound-amplifying member Sep. 4, 2012
8181736 Phase plug and acoustic lens for direct radiating loudspeaker May. 22, 2012
7970158 Sound system Jun. 28, 2011
7888847 Apodizing ultrasonic lens Feb. 15, 2011
7837006 Enhanced spectrum acoustic energy projection system Nov. 23, 2010
7770689 Lens for concentrating low frequency ultrasonic energy Aug. 10, 2010
7766122 Acoustic energy projection system Aug. 3, 2010
7702123 Loudspeaker assembly Apr. 20, 2010
7669692 Sound diffuser Mar. 2, 2010
7621369 Acoustic energy projection system Nov. 24, 2009
7316290 Acoustic lens system Jan. 8, 2008
7278513 Internal lens system for loudspeaker waveguides Oct. 9, 2007
7266211 Speaker grill Sep. 4, 2007
7204342 Sound focus speaker of gas-filled sound lens attachment type Apr. 17, 2007
6820718 Acoustic reproduction device with improved directional characteristics Nov. 23, 2004
6554826 Electro-dynamic phased array lens for controlling acoustic wave propagation Apr. 29, 2003
6533063 Video equipment speaker device with acoustic lens Mar. 18, 2003
6527080 Passive system for speech enhancement Mar. 4, 2003
6478109 Laminated composite panel-form loudspeaker Nov. 12, 2002
H2049 Differential property sensitive acoustic lens Oct. 1, 2002
6435301 Apparatus for the redistriabution of acoustic energy Aug. 20, 2002
6068080 Apparatus for the redistribution of acoustic energy May. 30, 2000
5850060 Acoustic lens device Dec. 15, 1998
5365024 Acoustic lens system Nov. 15, 1994
5345045 Acoustic lens Sep. 6, 1994
5274709 Speaker device for television receiver Dec. 28, 1993
5190826 Interlayers for use in sound-insulating laminated glasses Mar. 2, 1993
4970705 Constant focal length acoustic lens Nov. 13, 1990
4967873 Acoustic lens apparatus Nov. 6, 1990
4922594 Method of making a focussing element for use in a lenseless focussed transducer May. 8, 1990
4887692 Noise reducing device for marine propulsion Dec. 19, 1989
4881618 Acoustic lens for use in acoustic microscope Nov. 21, 1989
4858720 Noise reducing apparatus Aug. 22, 1989
4852973 Diffraction free arrangement Aug. 1, 1989
4852682 Underwater voice communicator Aug. 1, 1989
4844198 Plane wave focusing lens Jul. 4, 1989
4836328 Omnidirectional acoustic transducer Jun. 6, 1989
4779241 Acoustic lens arrangement Oct. 18, 1988
4726444 Sound wave control device Feb. 23, 1988
4651850 Acoustic lens Mar. 24, 1987
RE32062 Multiple field acoustic focusser Jan. 14, 1986
4562900 Lens system for acoustic transducer array Jan. 7, 1986

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