John Z Tyson

US Patent:

6639710, Oct 28, 2003

Filed:

Sep 29, 2001

Appl. No.:

09/967216

Inventors:

Peter Kurczynski - Maplewood NJ
John Anthony Tyson - Pottersville NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ
Agere Systems Guardian Corp. - Orlando FL

International Classification:

G02B 2600

US Classification:

359290, 359291, 359214, 359224, 359230, 359292, 359295, 257239, 348775

Abstract:

An adaptive optics system is disclosed whereby at least one mirror in the system is manipulated using electrostatic force to selectively attract or repel a portion of the mirror to or from a particular electrode, respectively. This attraction or repulsion is accomplished by mechanically coupling a bound charge layer of dielectric material to at least one surface of the mirror and then placing a voltage across an electrode in an array of electrodes positioned near that mirror. The charge in the dielectric material combined with a suitable electric field makes it possible to attract portions of the mirror in one instant and then, by changing the sign on the voltage placed across the electrode, to repel those same portions in the next instant.

US Patent:

6792185, Sep 14, 2004

Filed:

Feb 29, 2000

Appl. No.:

09/516268

Inventors:

Robert George Ahrens - Chatham NJ
Herman Melvin Presby - Highland Park NJ
Gerald E. Tourgee - Convent Station NJ
John Anthony Tyson - Pottersville NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G02B 604

US Classification:

385115, 385 52, 356400

Abstract:

A method and apparatus are disclosed for aligning and maintaining the alignment of the transmitting unit and the receiving unit in an optical wireless communication system. The receiving unit includes an optical bundle positioned at the focal point of an objective optic element. The optical bundle is comprised of an array of optical fibers, arranged surrounding the receiving fiber. The receiving unit also includes a number of detectors that measure the optical signal strength on a corresponding fiber in the optical bundle. The array of fibers is used to detect the location of the received signal relative to the receiving optical fiber and to provide feedback to adjust the orientation of the optical bundle to optimize the received signal strength. When misalignment occurs between the received signal and the receiving fiber, some of the incident received signal will be captured by one or more of the outer optical fibers. The amplitude of each of the generated signals are then compared to each other, thereby giving a direction in which to drive the optical bundle back into alignment with the received signal.

US Patent:

7126742, Oct 24, 2006

Filed:

Dec 23, 2004

Appl. No.:

11/024373

Inventors:

Harold M. Dyson - Beith, GB
Peter Kurczynski - South Orange NJ, US
John A. Tyson - Winters CA, US

Assignee:

Lucent Technologies Inc. - Murray Hill NJ
University of California - Oakland CA

International Classification:

G02B 26/00
G02B 5/08

US Classification:

359295, 359846, 359847

Abstract:

A membrane receives an incident energy signal at a first surface of the membrane. An actuating electrode, located adjacent to the membrane on a side opposite the first surface, applies an actuating pressure to the membrane if an actuating potential is applied between the actuating electrode and the membrane. A restoring electrode, located adjacent to the first surface of the membrane, applies a restoring pressure to the membrane if a restoring potential is applied between the restoring electrode and the membrane. The restoring electrode has an outer surface defining an aperture that enables the incident energy signal to pass, for example, without significant obstruction and without significant attenuation, through the restoring electrode to impinge upon the membrane, and the length of the restoring electrode is at least as great as the smallest width of the aperture.

US Patent:

63047608, Oct 16, 2001

Filed:

Jun 11, 1999

Appl. No.:

9/330855

Inventors:

David Thomson - Murray Hill NJ
John Anthony Tyson - Pottersville NJ

Assignee:

Lucent Technologies, Inc. - NJ

International Classification:

H04B 726

US Classification:

455503

Abstract:

A method and system for reducing the effects of atmospheric ducting on wireless transmissions, wherein a wireless communication system is comprised of a plurality of base stations having antennas, each base station having a beacon signal transmitter and a beacon signal receiver. Each beacon signal transmitter is configured to transmit a wireless beacon signal to be received by the beacon signal receiver at other, preferably every other, base stations. For each wireless beacon signal, a time delay and a propagation loss is measured. Each measured time delay and propagation loss is compared to an expected time delay and an expected propagation loss corresponding to the wireless beacon signal. The results of the comparison are processed so as to determine a location of atmospheric ducts in the region serviced by the wireless system. Once an atmospheric duct has been located, the antennas of the base stations in the wireless system are arranged so as minimize the transmission of the wireless beacon signals through the duct location.