Acoustics – Sound-modifying means – Lens
Reexamination Certificate
2007-10-09
2007-10-09
Donovan, Lincoln (Department: 2837)
Acoustics
Sound-modifying means
Lens
C181S187000, C181S152000, C181S199000, C181S191000
Reexamination Certificate
active
10180691
ABSTRACT:
This invention provides a lens system for a loudspeaker. The loudspeaker may include a driver unit and a waveguide attached to the driver unit. The loudspeaker further may include a lens system. The lens system may include a plurality of plates. The plates may be positioned to divide an interior of the waveguide into a plurality of acoustic paths of substantially equal length. The acoustic paths may bend the propagation of one or more acoustic elements of a sound wave so that each acoustic element arrives at a plane substantially at the same time.
REFERENCES:
patent: 969126 (1910-08-01), White
patent: 1067905 (1913-07-01), English
patent: 2001089 (1935-05-01), Blattner
patent: 2684724 (1954-07-01), Kock
patent: 2819771 (1958-01-01), Kock
patent: 2848058 (1958-08-01), Hartsfield
patent: 3027964 (1962-04-01), Spragins, Jr. et al.
patent: 3735336 (1973-05-01), Long
patent: 3776361 (1973-12-01), Rolle
patent: 3957134 (1976-05-01), Daniel
patent: 4071112 (1978-01-01), Keele, Jr.
patent: 4091891 (1978-05-01), Hino et al.
patent: 4156476 (1979-05-01), Matsumoto et al.
patent: 4164631 (1979-08-01), Garner et al.
patent: 4344504 (1982-08-01), Howze
patent: 4390078 (1983-06-01), Howze et al.
patent: 4445380 (1984-05-01), Kaminski
patent: 4470308 (1984-09-01), Hayakawa et al.
patent: 4685532 (1987-08-01), Gunness
patent: 4726444 (1988-02-01), Iida et al.
patent: 4753318 (1988-06-01), Mizuno et al.
patent: 4764905 (1988-08-01), Granz et al.
patent: 4776428 (1988-10-01), Belisle
patent: 4836328 (1989-06-01), Ferralli
patent: 4852682 (1989-08-01), Benjamin
patent: 4945334 (1990-07-01), Biersach
patent: 5163167 (1992-11-01), Heil
patent: 5168130 (1992-12-01), Shima et al.
patent: 5214394 (1993-05-01), Wong
patent: 5524062 (1996-06-01), Oh
patent: 6095279 (2000-08-01), Adamson
patent: 6112847 (2000-09-01), Lehman
patent: 6394223 (2002-05-01), Lehman
patent: 6581719 (2003-06-01), Adamson
patent: 6628796 (2003-09-01), Adamson
patent: 6744899 (2004-06-01), Grunberg
patent: 2002/0114482 (2002-08-01), Adamson
patent: 2003/0132056 (2003-07-01), Meyer et al.
Kock, W. and Harvey, F.K., “Refracting Sound Waves,”The Journal of the Acoustical Society of America, vol. 21, No. 5, Sep. 1949.
Frayne, J. and Loganthi, B., “Theater Loudspeaker System Incorporating an Acoustic-Lens Radiator,”Journal of the SMPTE, vol. 63, Sep. 1954.
Augspurger, G., “The Acoustical Lens,”Electronics World, Dec. 1962.
X-Line™ Speaker System User's Guide, Chapter 3: Linear Arrays 2001 Telex Communications, Inc. (Cover Sheet and pp. 9-15).
X-Line™ Speaker System User's Guide, Chapter 2: Linear Arrays 2001 Telex Communications, Inc. (Cover Sheet and pp. 5-8, Insert (1 page)).
JBL Professional Division, JBL Incorporated, 8500 Balboa Boulevard, P.O. Box 2200, Northridge, California 91329 (4 pages).
Donovan Lincoln
Harman International Industries Incorporated
McCloud Renata
LandOfFree
Internal lens system for loudspeaker waveguides does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Internal lens system for loudspeaker waveguides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Internal lens system for loudspeaker waveguides will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3844494