Eastman-kodak Company

Corning Incorporated

International Business Machines Corporation

Power Integrations, Inc.

Joshua Monroe Cobb

David D Kessler

Uldis Artis Ziemins

David Clifford Long

Mark J LaPlante

Candace J Freedenberg

Franz X Topolovec

John A Agostinelli

Barry David Silverstein

James G Balz

Daniel Guilford Patterson

Rongguang Liang

Andrea S Rivers

Andrew Frederick Kurtz

James E Roddy

Paul Gerard Dewa

John Weston Frankovich

Jeffery Richard Hawver

John H Bruning

Sujatha Ramanujan

Paul Francis Michaloski

Roger A Morton

Thomas James Dunn

Kevin John Magierski

Mark Christian Sanson

Jeffrey R Hawver

Peter Kevin Parker

Candace Joy Flattery-Freedenberg

Michael E Miller

Timothy John Tredwell

Xiang-Dong Mi

Gregory Roger Martin

Nelson Adrian Blish

David John Nelson

Mark E Bridges

Peter Gerard Wigley

Michael E Harrigan

Vikram Bhatia

Edward Covannon

Robert J Zolla

Horst Schreiber

James H Covell

Brian Monroe McMaster

Robert F Florence, Jr

James T Stoops

Carl Edgar Crossland

Kenneth J Repich

Robert H Cuffney

Allan M Waugh

Todd M Upton

Jennifer A Lebaron

Barry James Kosowski

Robert Raymond Raczkowski

Steven James Van Kerkhove

David Richard Bonin

A low-coherence Fizeau interferometer includes a first beamsplitter, a test arm and a reference arm, the first beamsplitter splits light into a first portion of light directed to the test arm and a second portion of light directed to the reference arm, and an imaging arm comprising a first collimating lens, a flat reference surface, and a test element. The test arm focuses the first portion of light at a first focal point, such that a virtual image of the first focal point appears at a focal point of the test element. The reference arm focuses the second portion of light at a second focal point, the first collimating lens collimates the light that then reflects off the flat reference surface. The second beamsplitter directs the first portion of light to reflect off the test element. The reflection of the first and second portion of light form an interference pattern.

Low-coherence interferometer with surface power compensation

An optical imaging system for cell culture monitoring is provided. The system includes an illumination segment having an illumination source and a collimating lens positioned between a first surface of a cell culture vessel and the illumination source. The illumination source and the collimating lens are arranged to transmit light through the first surface at an angle oblique to the first surface of the cell culture vessel. The system also includes a detection segment having a detector and a lens positioned between the first surface of the cell culture vessel and the detector. The lens focuses light to the detector through an aperture stop, and the detector receives light that exits the first surface of the cell culture vessel at an angle oblique to the first surface.

Compact optical imaging system for cell culture monitoring

A cell monitoring plate comprises a flat surface on which multiple cell culturing vessels may be stacked. The flats surface has multiple optical imaging systems embedded therein to fully image a cell culture vessels stacked on the plate. Each one of the multiple optical imaging systems provides both illumination and imaging through a single aperture in the surface of the monitoring plate.

System and method for imaging and illumination for cell confluence measurement

A method for aligning multiple optical components in an optical system including placing a sphere at a first position that is at a center of curvature of a first optical component, and aligning a focus of a first reference signal with the sphere at the first position. Then, moving the sphere along an axis of optical symmetry to a second position that is at a center of curvature of a second optical component, and aligning a focus of a second reference signal with the sphere at the second position. The first optical component is aligned with the first reference signal and fixing the first optical component, and the second optical component is aligned with the second reference signal and fixing the second optical component.

Methods for aligning multiple optical surfaces using spheres

A display apparatus has an image generator that generates image-bearing light from a surface and a lens spaced apart from the image generator and having an aspheric incident refractive surface concave to the image generator and having an aspheric reflective surface concave to the image generator, wherein a principal axis of the reflective surface is normal to the image generator. A beam splitter plate disposed in free space between the image generator and the lens has first and second parallel surfaces that are oblique to a line of sight of a viewer. The lens and the beam splitter plate define a viewer eye box for the image-bearing light along the line of sight of the viewer.

Wide field personal display device

A display apparatus has an image generator that generates image-bearing light from a f surface and a lens spaced apart from the image generator and having an aspheric incident refractive surface concave to the image generator and having an aspheric reflective surface concave to the image generator, wherein a principal axis of the reflective surface is normal to the image generator. A beam splitter plate disposed in free space between the image generator and the lens has first and second parallel surfaces that are oblique to a line of sight of a viewer. The lens and the beam splitter plate define a viewer eye box for the image-bearing light along the line of sight of the viewer.

Wide field personal display

A display apparatus comprising at least one image generator having a curved display surface that generates image-bearing light, the display surface having at least one radius of curvature r1; a reflective component spaced apart from the image generator, the reflective component having an incident reflective surface concave to the image and at least one radius of curvature r1, disposed to create a virtual image of the curved display surface; and a beam splitter plate disposed in free space between the image generator and the reflective component and having first and second surfaces that are oblique to a line of sight of a viewer, wherein the reflective component and the beam splitter plate define a viewer eye box for the image-bearing light along the line of sight of the viewer, wherein the curved display surface and the reflective surface are substantially concentric.

Monocentric wide field personal display

Optical connectors for connecting optical fiber to a light source are disclosed. In one embodiment, an optical connector includes a housing with a first end having an open aperture and a second end having a blind aperture. A chamber is disposed in the housing such that the optical axis of the housing passes through the chamber. The chamber includes a first material. A light collecting region formed from a second material is disposed in the housing between the second end of the housing and the chamber. A blind aperture is positioned in the light collecting region such that a termination of the blind aperture is spaced apart from the chamber by at least a portion of the second material. A refracting surface is disposed in the housing between the open aperture and the light collecting region such that the optical axis of the housing passes through the refracting surface.

Optical connectors for coupling light sources to optical fibers

A grazing-incidence interferometer includes first and second spaced-apart diffractive optical elements with a generally planar object disposed therebetween. The first diffractive optical element forms sheared first-diffracted-order light beams that reflect from opposite first and second surfaces of the object at grazing-incidence angles, while a zero-diffracted-order light beam goes unreflected. The second diffractive optical element combines the unreflected zero-diffracted-order light beam and the sheared reflected beams to form a collimated, combined beam. A 1&#xd7; double-telecentric relay system relays the combined beam to a folding optical system that forms first and second interference images on a diffusing screen located at an image plane. Digital images of the first and second interference images are obtained and processed to characterize the thickness variation of the object.

Grazing-incidence interferometer with dual-side measurement capability using a common image plane

A light multiplexing system includes a color combining element and first, second, and third color channels. Each color channel includes a light source that directs light of a corresponding first, second, or third wavelength band, respectively, toward the color combining element. The color combining element includes first and second windows. The first and second windows are made of a solid transparent material and include, collectively, three coated surfaces. The surfaces may be non-contiguous. A first coated surface receives light of the first, second and third wavelength bands. The first coated surface reflects the light of the first wavelength band and transmits the light of the second and third wavelength bands. A second coated surface receives light of the second and third wavelength bands transmitted by the first coated surface. The second coated surface reflects the light of second wavelength band and transmits the light of the third wavelength band. The third coated surface receives the light of the third wavelength band transmitted by the second coated surface and reflects it. The reflected first, second, and third wavelength bands exit the first surface of the color combining element as a coaxial beam.

Light multiplexer with color combining element

A sensing apparatus for detecting light of first and second fluorescent wavelength bands has a light source to generate an excitation wavelength to a first collimator element. A dichroic multiplexer has a first coated surface oblique to the optical axis and treated to transmit the excitation wavelength and to reflect the second fluorescent wavelength band and a second coated surface treated to transmit the excitation wavelength and the second fluorescent wavelength band and to reflect the first fluorescent wavelength band. A focusing element focuses the excitation light toward a light guide and directs collimated light of the first and second fluorescent wavelength bands from the light guide to the dichroic multiplexer. A first detector element is in the path of reflected light of the first fluorescent wavelength band and a second detector element is in the path of reflected light of the second fluorescent wavelength band.

Apparatus for substance detection

An apparatus for providing a light beam has a solid-state laser to emit a polarized input laser light beam that has a first aspect ratio of etendue R. First and second cylindrical lenses collimate the light along orthogonal directions. An edge of a bisecting reflective surface splits the laser light beam into a first portion directed along a first beam path and a second portion along a second beam path, wherein the first and second beam paths each contain emitted light from the solid-state laser. One or more folding reflective surfaces are disposed along the first or second or both beam paths. A polarization rotator rotates polarization of the light along the second beam path. A polarization combiner combines light from the first and second beam paths to form an output beam, wherein the output beam has a second aspect ratio of etendue Rnot equal to R.

Method and apparatus for combining laser array light sources

An apparatus for providing pump light of a first wavelength &#x3bb;to a laser that emits a second wavelength &#x3bb;has first and second lasers of the wavelength &#x3bb;to direct light along first and second axes in a first direction. The first and second axes define a first plane P. To form a composite light beam of wavelength &#x3bb;, a filter apparatus has a first filter on a first surface at an oblique angle to the first and second axes and that transmits &#x3bb;and reflects &#x3bb;. A second filter on a second surface parallel to the first surface, reflects &#x3bb;and transmits &#x3bb;. A third filter formed on the first surface coplanar with the first filter reflects &#x3bb;and transmits &#x3bb;. The filter apparatus re-aligns the first and second axes along a second plane P, orthogonal to Pand parallel to the first direction.

Method and apparatus for combining light sources in a pump laser array

An apparatus emits a laser light beam with a first aspect ratio of etendue R, wherein the optical invariant with respect to a first direction is less than half the optical invariant with respect to a second orthogonal direction. A first cylindrical lens collimates the beam in the first direction. A second cylindrical lens collimates the light beam in the second direction. A bisecting reflective surface has an edge that splits the collimated beam into undeviated and first deviated beam paths. A folding reflective surface redirects the first deviated beam path back toward the bisecting reflective surface, optically parallel with and displaced from the undeviated beam path with respect to the first direction. At least a portion of the redirected first deviated beam path passes the edge and combines with the undeviated path to form an output beam having a second aspect ratio of etendue Rnot equal to R.

Single-emitter etendue aspect ratio scaler

Growing community of inventors

Victor, NY, United States of America

Joshua Monroe Cobb