Robert Lee Hart

US Patent:

7280196, Oct 9, 2007

Filed:

Feb 23, 2004

Appl. No.:

10/784595

Inventors:

Robert H. Hart - Cary NC, US
Montie W. Roland - Cary NC, US

Assignee:

GretagMacbeth LLC - New Windsor NY

International Classification:

G01J 1/04
G01J 3/42

US Classification:

356236, 356319

Abstract:

A spectrophotometric system includes a zoom lens assembly that is mounted for axial translation relative to an integrating sphere. The zoom lens assembly includes first and second focusing lens mounted to an axially movable lens carrier. The lens carrier is positioned intermediate first and second sets of mirrors for reflecting/directing SCE and SCI beams toward fiber ports. A reference beam is also emitted from the integrating sphere and transmitted to a processor, thereby resulting in simultaneous tri-beam measurements. The disclosed spectrophotometric systems may also include an aperture plate detection assembly and/or a sample holder assembly that incorporates a dampening gas spring. The aperture plate detection system includes a detection disk that may include a plurality of pre-positioned sensors that interact with an activating ridge formed on the aperture plate for identification thereof.

US Patent:

7342657, Mar 11, 2008

Filed:

Nov 3, 2005

Appl. No.:

11/266573

Inventors:

Robert H. Hart - Cary NC, US
David R. Battle - Durham NC, US
Michael R. Groh - Raleigh NC, US

Assignee:

GretagMacbeth, LLC - New Windsor NY

International Classification:

G01N 21/47

US Classification:

356319, 356446

Abstract:

The present disclosure provides for a device, as well as a system and method associated therewith, for, among other things, providing: (i) up to five distinct measurement angles along with an illumination reference channel; (ii) a plurality of illumination sources that provide a focused beam of illumination at specific desired angles of incidence to a sample under target; (iii) a shutter mechanism incorporating a calibration transfer standard; (iv) an internal optical system that is operatively associated with a gimbaled structure suitable to allow vertical and angular conformity to a target sample; and (v) a handheld and operated enclosure incorporating a user interface with a visual display unit complete with interactive navigation means and an activation switch, and a number of surface detecting contact elements operatively associated with the optical system and shutter mechanism.

US Patent:

8189192, May 29, 2012

Filed:

Jun 25, 2009

Appl. No.:

12/491546

Inventors:

Pete Huening - Clayton NC, US
Robert H. Hart - Cary NC, US
Eric L. Buckland - Hickory NC, US

Assignee:

Bioptigen, Inc. - Durham NC

International Classification:

G01J 3/28

US Classification:

356328

Abstract:

A Spectrometer is provided including a camera and an axial symmetric camera mount configured to receive the camera and to rotate. The spectrometer furthers include an input for providing optical radiation to a spectrometer system; a diffraction grating for dispersing the optical radiation along a prescribed plane; at least one lens for focusing wavelength-dispersed light onto at least one array of a detector of optical radiation, wherein the camera has at least one linear array of elements for detecting optical radiation; a mechanical housing, wherein the axial symmetric camera mount is configured to couple the camera to the mechanical housing; and a means for rotating the camera coupled to the mechanical housing about an axis. Related systems and methods are also provided.

US Patent:

8310674, Nov 13, 2012

Filed:

May 10, 2012

Appl. No.:

13/468372

Inventors:

Pete Huening - Clayton NC, US
Robert H. Hart - Cary NC, US
Eric L. Buckland - Hickory NC, US

Assignee:

Bioptigen, Inc. - Durham NC

International Classification:

G01J 3/28

US Classification:

356328

Abstract:

A spectrometer is provided including a camera and an axial symmetric camera mount configured to receive the camera and to rotate. The spectrometer furthers include an input for providing optical radiation to a spectrometer system; a diffraction grating for dispersing the optical radiation along a prescribed plane; at least one lens for focusing wavelength-dispersed light onto at least one array of a detector of optical radiation, wherein the camera has at least one linear array of elements for detecting optical radiation; a mechanical housing, wherein the axial symmetric camera mount is configured to couple the camera to the mechanical housing; and a means for rotating the camera coupled to the mechanical housing about an axis. Related systems and methods are also provided.

US Patent:

8625104, Jan 7, 2014

Filed:

Oct 22, 2010

Appl. No.:

12/910184

Inventors:

Joseph A. Izatt - Raleigh NC, US
Eric L. Buckland - Hickory NC, US
Bradley A. Bower - Hillsborough NC, US
Robert H. Hart - Cary NC, US

Assignee:

Bioptigen, Inc. - Morrisville NC

International Classification:

G01B 11/02
G01B 9/02

US Classification:

356497, 356479

Abstract:

Optical coherence tomography systems for imaging a whole eye are provided including a sample arm including focal optics that are configured to rapidly switch between at least two scanning modes in less than about 1. 0 second.

US Patent:

20090141237, Jun 4, 2009

Filed:

Oct 31, 2008

Appl. No.:

12/262692

Inventors:

Joseph A. Izatt - Raleigh NC, US
Michael E. Sullivan - Raleigh NC, US
Seungbum Woo - Bridgewater NJ, US
Robert H. Hart - Cary NC, US
Eric Buckland - Hickory NC, US

International Classification:

A61B 3/10
G01B 11/02

US Classification:

351211, 356497

Abstract:

A system for imaging a sample is provided that includes an optical coherence tomography (OCT) portion having an associated OCT path. A second imaging portion is provided having an associated second image path, different from the OCT path. A fixation target having an associated fixation path, different from the second image path and the OCT path is also provided. The OCT path, the second image path and the fixation path are confocal at a common image plane. Related handheld systems are also provided.

US Patent:

20090268161, Oct 29, 2009

Filed:

Apr 24, 2009

Appl. No.:

12/429323

Inventors:

Robert H. Hart - Cary NC, US
Eric L. Buckland - Hickory NC, US
Glenn A. Myers - Durham NC, US
Joseph A. Izatt - Raleigh NC, US

International Classification:

A61B 3/15
A61B 3/14

US Classification:

351208, 351206

Abstract:

OCT imaging systems are provided for imaging a spherical-type eye including a source having an associated source arm path and a reference arm having an associated reference arm path coupled to the source path. The reference arm path has an associated reference arm path length. A sample is also provided having an associated sample arm path coupled to the source arm and reference arm paths. A lens having a focal power optimized for a diameter of the spherical-type eye is provided along with a reference arm path length adjustment module coupled to the reference arm. The reference arm path length adjustment module is configured to automatically adjust the reference arm path length such that the reference arm path length is based on an eye diameter of the subject.

US Patent:

20120162602, Jun 28, 2012

Filed:

Dec 22, 2011

Appl. No.:

13/334678

Inventors:

Pete Huening - Clayton NC, US
Eric L. Buckland - Hickory NC, US
Robert H. Hart - Cary NC, US

International Classification:

A61B 3/14

US Classification:

351208, 351206

Abstract:

Some embodiments of the present inventive concept provide an accessory frame including an optical coherence tomography (OCT) imaging head. The accessory frame includes a mounting plate including a microscope field lens attachment port and a microscope field plate anchor pin. The mounting plate is configured to receive an intermediate field lens in the microscope field lens attachment port such that the accessory frame shares the mounting plate in common with an intermediate field lens.