Gregory H Rhodes

US Patent:

7302136, Nov 27, 2007

Filed:

Mar 19, 2004

Appl. No.:

10/804641

Inventors:

Daryoosh Vakhshoori - Cambridge MA, US
Masud Azimi - Belmont MA, US
Gregory Vander Rhodes - Melrose MA, US

Assignee:

Ahura Corporation - Wilmington MA

International Classification:

G02B 6/26
G02B 6/42

US Classification:

385 31, 385 52, 385 33

Abstract:

An assembly is disclosed for optical components, the assembly comprising: a platform for receiving and supporting a plurality of carrier components having optical components mounted thereon; carrier component receiving stations formed on the platform, each of the stations being adapted to receive and retain one of the carrier components; a first one of the carrier components having a light beam outlet; and a second one of the carrier components having a light beam receiving port, wherein the optical component receiving stations are disposed to position the first one of the components and second one of the components relative to one another such that the light beam outlet and the light beam receiving port are in alignment with one another.

US Patent:

8203700, Jun 19, 2012

Filed:

Apr 14, 2009

Appl. No.:

12/423203

Inventors:

Gregory Vander Rhodes - Melrose MA, US
Kevin J. Knopp - Newburyport MA, US
Christopher D. Brown - Haverill MA, US

Assignee:

Ahura Scientific Inc. - Wilmington MA

International Classification:

G01N 21/35
G01N 21/65

US Classification:

356 73, 356301, 25033908, 37910602, 4555561

Abstract:

This disclosure relates to a method that includes receiving infrared adsorption absorption information for a sample, processing the infrared adsorption absorption information for the sample to determine an identity of the sample, generating a reference signature for the identified sample, and distributing the reference signature for the identified sample to a plurality of handheld measurement devices via cellular connections with the handheld measurement devices.

US Patent:

20040240031, Dec 2, 2004

Filed:

Mar 15, 2004

Appl. No.:

10/802069

Inventors:

Masud Azimi - Belmont MA, US
Daryoosh Vakhshoori - Cambridge MA, US
Kevin Knopp - Newburyport MA, US
Gregory Rhodes - Melrose MA, US
Peidong Wang - Carlisle MA, US

International Classification:

G02F001/09
G02F001/00

US Classification:

359/280000

Abstract:

An optical isolator is disclosed for transmitting light in a first direction and blocking light in a second direction along an optical pathway. The optical isolator includes an input polarizer having a pass axis at first angle, an output polarizer having a pass axis at second angle, a Faraday rotator material between the polarizers having a Verdet constant and an axis of maximum length therethrough, generation means for generating a magnetic field around and inside the rotator material, and at least one reflector configured to define an optical length through the rotator material which is longer than the axis therethrough. The optical pathway length through the rotator material, the magnetic field strength, and the Verdet constant are selected so as to rotate light through the Faraday rotator material from the first angle to the second angle.

US Patent:

20050225758, Oct 13, 2005

Filed:

Mar 23, 2005

Appl. No.:

11/088169

Inventors:

Kevin Knopp - Newburyport MA, US
Daryoosh Vakhshoori - Cambridge MA, US
Gregory Rhodes - Melrose MA, US

International Classification:

G01J003/44
G01N021/65

US Classification:

356301000

Abstract:

A method for tagging and identifying a composition using Raman spectroscopy is disclosed, the method comprising tagging the composition by disbursing additional individual tag molecules throughout a base material thereof so as to create a tagged material having a spectral profile with a specific Raman optical signature encoded therein, wherein the specific Raman optical signature of the tagged material is distinct from the native Raman optical signature of the base material; and identifying the composition by reading a spectral response of the tagged material with a Raman spectroscopic technique so as to identify the composition based on the specific Raman optical signature encoded in the tagged material rather than the native Raman optical signature encoded in the base material.

US Patent:

20060170917, Aug 3, 2006

Filed:

Aug 30, 2005

Appl. No.:

11/215526

Inventors:

Daryoosh Vakhshoori - Cambridge MA, US
Peili Chen - Andover MA, US
Masud Azimi - Belmont MA, US
Peidong Wang - Carlisle MA, US
Yu Shen - Waltham MA, US
Kevin Knopp - Newburyport MA, US
Leyun Zhu - Andover MA, US
Christopher Brown - Haverhill MA, US
Gregory Vander Rhodes - Melrose MA, US

International Classification:

G01J 3/44
G01N 21/65

US Classification:

356301000

Abstract:

A compact, lightweight, portable optical assembly comprising: a platform; and a plurality of optical elements mounted to the platform; wherein the plurality of optical elements are optically connected to one another with free-space couplings so as to form an optical circuit; and further wherein the platform is sufficiently mechanically robust so as to maintain the free-space optical coupling between the various optical elements. A method for making a compact, lightweight, portable optical assembly, comprising: providing a platform; and mounting a plurality of optical elements to the platform; wherein the plurality of optical elements are mounted to the platform so that they are optically connected to one another with free-space couplings so as to form an optical circuit; and further wherein the platform is sufficiently mechanically robust so as to maintain the free-space optical coupling between the various optical elements.

US Patent:

20070091412, Apr 26, 2007

Filed:

Jun 2, 2006

Appl. No.:

11/446584

Inventors:

Masud Azimi - Belmont MA, US
Daryoosh Vakhshoori - Cambridge MA, US
Kevin Knopp - Newburyport MA, US
Gregory Rhodes - Melrose MA, US
Peidong Wang - Carlisle MA, US

International Classification:

G02F 1/09

US Classification:

359280000

Abstract:

An optical isolator for transmitting light in a first direction along an optical pathway and blocking light in a second direction along an optical pathway. The optical isolator includes an input polarizer having a pass axis at a first angle, an output polarizer having a pass axis at a second angle, a Faraday rotator material between the polarizers having a Verdet constant and an axis of maximum length therethrough, generation means for generating a magnetic field around and inside the rotator material, and at least one reflector configured to define an optical length through the rotator material which is longer than the axis therethrough. The optical pathway length through the rotator material, the magnetic field strength, and the Verdet constant are selected so as to rotate light through the Faraday rotator material from the first angle to the second angle.

US Patent:

20080033663, Feb 7, 2008

Filed:

Aug 7, 2007

Appl. No.:

11/890780

Inventors:

Christopher Brown - Albuquerque NM, US
Gregory Vander Rhodes - Melrose MA, US

International Classification:

G01R 23/16

US Classification:

702028000

Abstract:

In one form of the invention, there is provided a method for determining the most likely composition of a sample, comprising: obtaining data from a sample, wherein the data comprises a representation of a measured spectrum; determining the precision state of the representation of the measured spectrum; providing a plurality of library candidates and, for each library candidate, providing data representing the same, wherein the data comprises a representation of a library spectrum; determining a representation of the similarity of the sample to each library candidate using (i) the representation of the measured spectrum; (ii) the precision state of the representation of the measured spectrum; and (iii) the representation of the library spectrum for that library candidate; and determining the most likely composition of the sample based upon the determined representations of similarity of the sample to each library—candidate. In another form of the invention, there is provided a method for determining the most likely composition of a sample, comprising:

US Patent:

20120223130, Sep 6, 2012

Filed:

Aug 10, 2007

Appl. No.:

11/837284

Inventors:

Kevin J. Knopp - Newburryport MA, US
Daryoosh Vakhshoori - Cambridge MA, US
Christopher Brown - Albuquerque NM, US
Gregory Vander Rhodes - Melrose MA, US

International Classification:

G06F 17/30
G01J 3/44
G01N 21/64
G01J 1/42
G01J 3/42

US Classification:

235375, 250206, 250340, 2504591, 25033901, 2504581, 356301

Abstract:

Disclosed herein are methods and systems for scanning objects and associated substances, where the methods include: (a) using a first electronic device to scan a feature of an object and provide reference information about the object based on the scanned feature, where the feature identifies the object or a substance associated with the object; (b) using a second electronic device to measure electromagnetic radiation emitted from the object and provide sample information about the object based on the measured electromagnetic radiation; and (c) comparing the sample information and the reference information to determine whether the object includes the substance associated with the object.