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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:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 4852682 |
Underwater voice communicator |
Aug. 1, 1989 |
| 4852973 |
Diffraction free arrangement |
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 |
| 4553629 |
Ellipticized acoustical lens providing balanced astigmatism |
Nov. 19, 1985 |
| 4550609 |
Acoustic lens |
Nov. 5, 1985 |
| 4445380 |
Selectable focus sphericone transducer and imaging apparatus |
May. 1, 1984 |
| 4413704 |
Ellipticized acoustical liquid filled lens providing balanced astigmatism |
Nov. 8, 1983 |
| 4401859 |
Directional microphone with high frequency selective acoustic lens |
Aug. 30, 1983 |
| 4387599 |
Multiple field acoustic focusser |
Jun. 14, 1983 |
| 4356883 |
Ellipticized rubber acoustical lens providing balanced astigmatism |
Nov. 2, 1982 |
| 4197921 |
Anti-reflective acoustic wavefront refraction element |
Apr. 15, 1980 |
| 4193473 |
Refractive stigmatic system for elastic surface waves |
Mar. 18, 1980 |
| 4164631 |
Horn loudspeaker with acoustic lens |
Aug. 14, 1979 |
| 4061415 |
Nutating radiation deflecting method and apparatus |
Dec. 6, 1977 |
| 3980829 |
Wide angle cylindrical wave loudspeaker extending approximately from floor to ceiling height with a lens |
Sep. 14, 1976 |
| 3957134 |
Acoustic refractors |
May. 18, 1976 |
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