James Lindsey Snyder

US Patent:

7333210, Feb 19, 2008

Filed:

Aug 30, 2005

Appl. No.:

11/216548

Inventors:

James J. Snyder - Matthews NC, US
Stephen L. Kwiatowski - Sunnyvale CA, US

Assignee:

Fizeau Electro-Optic Systems, LLC - Matthews NC

International Classification:

G01B 9/02

US Classification:

356477, 356450, 356 285

Abstract:

A method and system for controlling the wavelength of light emitted by a tunable laser. The system includes a wavelength tuner that provides information of a desired wavelength; a coupler for tapping a portion of the light from the tunable laser; and an apparatus for measuring the actual wavelength of the light. The apparatus takes the portion of the light as an input signal and splits the input signal into two beams that are directed through two paths of different optical lengths. Then, the two beams are interfered with each other in order to form a fringe pattern at an observation plane, where the fringe pattern is detected and analyzed to determine the wavelength of the light. A processor compares the difference between the desired and determined wavelengths, and sends a tuning signal to the tunable laser forming a feedback control of the tunable laser.

US Patent:

51473461, Sep 15, 1992

Filed:

Aug 14, 1989

Appl. No.:

7/393646

Inventors:

Leopoldo V. Cancio - Cincinnati OH
James R. Snyder - Cincinnati OH
Pai-Chuan Wu - Cincinnati OH

Assignee:

Clopay Corporation - Cincinnati OH

International Classification:

A61F 1315

US Classification:

604389

Abstract:

Novel thermoplastic sheet materials, absorbant articles formed therewith and method of producing such sheet materials are disclosed. The novel thermoplastic sheet materials are soft and pliable having a high modulus, high impact resistance and tear strengths and enhanced tape adhesion. The novel thermoplastic sheet materials are formed directly during a coextrusion process which may thereafter include an embossing step. The novel, coextruded thermoplastic sheet materials comprise a plurality of coextruded layers having high modulus outer layers for permitting pressure-sensitive adhesive tape-tab fasteners to be positioned and repositioned thereon without losing substantial tape adhesion therebetween or tearing the sheet materials following their original attachments. The outer layers are formed with a first thermoplastic polymer, such as a polypropylene, having an effective modulus to resist tearing, yielding and deformation upon detaching tape-tab fasteners therefrom, and further having an effective bonding affinity to maintain tape adhesion after initial attachment. The other layer of the thermoplastic sheet materials is an inner layer(s) being formed with a second thermoplastic polymer, such as a polyethylene, to impart softness or low stiffness and effective impact resistance and tear strengths to the sheet materials.