Eastman-kodak Company

Carestream Health, Inc.

Lumetrics, Inc.

Other

University of California

Carestream Dental Technology Topco Limited

Lumentrics, Inc.

Imax Theatres International Limited

Michael Alan Marcus

Hrishikesh Vijaykumar Panchawagh

Jiann-Rong Lee

John A Agostinelli

Shashishekar P Adiga

David Lynn Patton

Victor C Wong

Rongguang Liang

Marek W Kowarz

Paul O McLaughlin

Filipp V Ignatovich

Donald S Gibson

Jeremy M Grace

Timothy M Trembley

Mark E Bridges

Peter D Burns

Donald R Lowry

James Alan Katerberg

Carolyn Rae Ellinger

Thomas W Palone

Steven A Van Slyke

Kam Chuen Ng

James G Phalen

Andrew Frederick Kurtz

Thomas F Kaltenbach

Barry David Silverstein

Rodney Ray Bucks

Rajesh Vinodrai Mehta

Kathleen M Vaeth

Andrew Ciaschi

Diane E Kestner

Kyle J Hadcock

Stanley Gross

Kenneth R Schafer

Eric A Dilella

David D Kessler

Gilbert Allan Hawkins

Yonglin Xie

Steven C Switalski

Anna L Hrycin

Ali G Lopez

Harry Wayne Harris

David C Wideman

Justin H Klug

Elena A Fedorovskaya

John P Spoonhower

Albert P Pisano

James K Lee

Edward Covannon

Serguei Endrikhovski

Dana W Wolcott

Andrew C Blose

Dennis R Freeman

Ruizheng Wang

Robert G Spahn

Mario Joseph Ciminelli

David Scott Uerz

Robert Link

Edward D Morrison

John E Benson

Ernest A Graff

Kenneth J Repich

Richard R Kelbe

Jaime I Waldman

Donald A Stephenson

Matthew A Hopcroft

John Solpietro

David Compertore

Ya-Mei Chen

Michael Stephen Sheppy

Duane M Courtney

Marek Wlodzimierz Kowarz

John Alphonse Agostinelli

Ali Gerardo Lopez

Jeremy Matthew Grace

Gilbert Allen Hawkins

A method of identifying the material and determining the physical thickness of each layer in a multilayer structure is disclosed. The method includes measuring the optical thickness of each of the layers of the multilayer object as a function of wavelength of a light source and calculating a normalized group index of refraction dispersion curve for each layer in the multilayer structure. The measured normalized group index of refraction dispersion curves for each of the layers is then compared to a reference database of known materials and the material of each layer is identified. The physical thickness of each layer is then determined from the group index of refraction dispersion curve for the material in each layer and the measured optical thickness data. A method for determining the group index of refraction dispersion curve of a known material, and an apparatus for performing the methods are also disclosed.

Apparatus and method for measurement of multilayer structures

A method of identifying the material and determining the physical thickness of each layer in a multilayer structure is disclosed. The method includes measuring the optical thickness of each of the layers of the multilayer object as a function of wavelength of a light source and calculating a normalized group index of refraction dispersion curve for each layer in the multilayer structure. The measured normalized group index of refraction dispersion curves for each of the layers is then compared to a reference data base of known materials and the material of each layer is identified. The physical thickness of each layer is then determined from the group index of refraction dispersion curve for the material in each layer and the measured optical thickness data. A method for determining the group index of refraction dispersion curve of a known material is also disclosed.

Method of measurement of multilayer structures

An apparatus for obtaining an image of a tooth having at least one light source providing incident light having a first spectral range for obtaining a reflectance image from the tooth and a second spectral range for exciting a fluorescence image from the tooth. A polarizing beamsplitter in the path of the incident light from both sources directs light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor, wherein the second polarization state is orthogonal to the first polarization state. A first lens in the return path directs image-bearing light from the tooth toward the sensor, and obtains image data from the portion of the light having the second polarization state. A long-pass filter in the return path attenuates light in the second spectral range.

Apparatus for caries detection

An interferometer apparatus which include two or more coupled fiber optic Michelson interferometers using fiber optic stretches which stretch two or more optical fibers wound around the perimeter of the optical fiber stretchers by the same amount is disclosed. Preferably a pair of reference and sample fiber optic stretches are utilized which run in a push-pull mode of operation. When one of the interferometers is a coherent light interferometer it can be used as a reference distance scale for all of the remaining low coherence light interferometer. A method for measuring a physical property of a device under test is also disclosed using the apparatus of the present invention.

Associated interferometers using multi-fiber optic delay lines

An apparatus for measuring the optical performance characteristics and dimensions of an optical element comprising a low coherence interferometer and a Shack-Hartmann wavefront sensor comprising a light source, a plurality of lenslets, and a sensor array is disclosed. The low coherence interferometer is configured to direct a measurement beam along a central axis of the optical element, and to measure the thickness of the center of the optical element. The light source of the Shack-Hartmann wavefront sensor is configured to emit a waveform directed parallel to and surrounding the measurement beam of the interferometer, through the plurality of lenslets, and to the sensor array. A method for measuring the optical performance characteristics and dimensions of a lens using the apparatus is also disclosed.

Apparatus and method for evaluation of optical elements

An apparatus for determining the angular error in the placement of fiducial marks on a toric intraocular lens with respect to the true location of a meridional axis of the intraocular lens, the fiducial marks defining an estimate of the angular orientation of the meridional axis of the intraocular is disclosed. The apparatus includes a rotatable intraocular lens holder coupled to drive assembly and an actuator which are mounted into an optical measurement cell receptacle of a wavefront measuring instrument or an angular error measuring instrument. A method for determining the angular error in the placement of fiducial marks on a toric intraocular lens with respect to the true location of a meridional axis of the intraocular lens is also disclosed.

Toric intraocular lens measurement apparatus and method

An acoustic wave drying system for drying a material using an acoustic resonant chamber that imparts acoustic energy to transiting air received from an airflow source. The acoustic resonant chamber includes a primary air channel having side surfaces connecting an air inlet and an air outlet, the primary air channel having a primary air channel length between the air inlet and the air outlet. A closed-end resonant chamber is formed into a first side surface of the primary air channel, the closed-end resonant chamber having a resonant chamber length. The acoustic resonant chamber also includes a sound air channel having a sound air channel inlet on a second side surface of the primary air channel opposite to the closed-end resonant chamber and a sound air channel outlet for directing an air impingement airstream containing acoustic energy onto the material.

Acoustic drying system with sound outlet channel

An acoustic wave drying system for drying a material using an acoustic resonant chamber that imparts acoustic energy to transiting air received from an airflow source. The acoustic resonant chamber includes a primary air channel having side surfaces connecting an air inlet and an air outlet, the primary air channel having a primary air channel length between the air inlet and the air outlet. One or more secondary closed-end resonant chambers are formed into side surfaces of the primary air channel. An air impingement airstream containing acoustic energy exits the air outlet and impinges on the material.

Acoustic wave drying system

A method of separating metallic semiconducting carbon nanotubes includes providing a source of a mixture of semiconducting and metallic carbon nanotubes in a carrier liquid with one of the semiconducting and metallic carbon nanotubes being functionalized to carry a charge. The mixture is pressurized to cause a liquid jet of the mixture to be emitted through a nozzle. A drop formation mechanism modulates the liquid jet to form from the jet first and second drops traveling along a path. An electric field modulating device, positioned relative to the jet, produces first and second electric fields. A deflection device applies the first electric field as the first drop is formed to concentrate the functionalized carbon nanotubes in the first drop and applies the second electric field as the second drop is formed. The deflection device causes the first or second drop to begin traveling along another path.

Metallic and semiconducting carbon nanotube sorting

A method for drying a material using an acoustic wave drying including an acoustic resonant chamber that imparts acoustic energy to transiting air received from an airflow source. The acoustic resonant chamber includes a primary air channel having side surfaces connecting an air inlet and an air outlet, the primary air channel having a primary air channel length between the air inlet and the air outlet. One or more secondary closed-end resonant chambers are formed into side surfaces of the primary air channel. An air impingement airstream containing acoustic energy exits the air outlet and impinges on the material.

Acoustic wave drying method

Growing community of inventors

Honeoye Falls, NY, United States of America

Michael Alan Marcus