Daniel H Raguin

6587618, Jul 1, 2003

Apr 30, 2001

09/845558

Daniel H. Raguin - Spencerport NY
Theodore J. Tiberio - Hilton NY
Bradley J. Ward - Pittsford NY
Steve Chakmakjian - Honeoye Falls NY
Nestor Farmiga - Rochester NY

Corning Incorporated - Corning NY

G02B 632

385 33, 385 80

A method for aligning optical fibers to a lens array is provided, including, providing a planar reflective surface facing the front surface of lens array, locating one end of a fiber adjacent the back surface of the substrate upon which the lens array is formed or integrated to face one of the lenses of the array, propagating light through the fiber and the lens facing the fiber to the planar reflective surface, receiving returned reflected light from the reflective surface through the fiber and the lens facing the fiber, and then adjusting the position of the fiber to change the amount of the returned reflected light received by the fiber to determine when the fiber is at a position which provides a maximum amount or power of the returned reflected light, thereby aligning the end of the fiber to the focal point of the lens. The fiber is attached to the substrate at that position, such as by an adhesive material, and the method repeated for each fiber to a different lens of the array. A ferrule may be provided about each end of the fibers attached to the substrate.

6620576, Sep 16, 2003

Apr 10, 2002

10/119139

Daniel H. Raguin - Spencerport NY

Corning Incorporated - Corning NY

G03F 738

430321, 430322, 430330, 430935, 430945, 427240, 4273722

A method for fabricating a structure on a substrate with a low contrast photoresist having a height greater than 15 microns is provided. A uniformly thick film of photoresist is achieved on a substrate by spinning the substrate at two different speeds, then at least partially, but not fully drying the layer of photoresist at ambient temperature. The layer of photoresist is then dried and hardened by applying heat to the bottom surface of the substrate via a hot plate. The substrate is maintained level at all times during the spinning and drying steps in order to prevent wedging of the photoresist which remains in a plastic state until fully hardened by the hot plate. A surface relief pattern is then created in the photoresist via a scanning beam of electromagnetic radiation, which is preferably a laser beam. The resulting exposed surface relief patterns are then developed to produce the desired structure, which has a height of 15 microns or greater.

6813080, Nov 2, 2004

Jan 31, 2003

10/356424

Daniel H. Raguin - Acton MA
John R. Marciante - Webster NY

Corning Incorporated - Corning NY

G02B 518

359572, 359576, 359569, 359566

The invention is directed to metal-free grating for use in wavelength optical communications, and in particular to metal-free, reflective immersed diffraction gratings. The gratings of the invention area made of at least a first material of refractive index n and a second material of refractive index n. Materials and must obey the Expressions: (I) n n , (II) n /2L n for single diffracted order at Littrow, and (III) n /n Sin| |1; wherein is the wavelength of the light incident on the grating, represents any and all propagation angles of incident and diffracted light, and L is the grating period. The grating profile is located at the interface of material and to material. In one embodiment, the grating profile is made from additional material and of refractive index n and n , respectively, and is placed between materials and. In another embodiment the grating is made from silicon.

7143609, Dec 5, 2006

Oct 29, 2002

10/283402

Bruce G Aitken - Corning NY, US
Dilip K Chatterjee - Rochester NY, US
Daniel H Raguin - Acton MA, US

Corning Incorporated - Corning NY

C03B 23/00
C03C 3/32

65 26, 6537412, 65319

A method is provided for molding from glass certain complex optical components, such as lenses, microlens, arrays of microlenses, and gratings or surface-relief diffusers having fine or hyperfine microstructures suitable for optical or electro-optical applications. Thereby, mold masters or patterns, which define the profile of the optical components, made on metal alloys, particularly titanium or nickel alloys, or refractory compositions, with or without a non-reactive coating are used. Given that molding optical components from oxide glasses has numerous drawbacks, it has been discovered in accordance with the invention that non-oxide glasses substantially eliminates these drawbacks. The non-oxide glasses, such as chalcogenide, chalcohalide, and halide glasses, may be used in the mold either in bulk, planar, or power forms. In the mold, the glass is heated to about 10–110 C. , preferably about 50 C.

7164514, Jan 16, 2007

Nov 15, 2004

10/988951

Daniel H. Raguin - Acton MA, US

DCE Aprilis, Inc. - Maynard MA

G03H 1/02

359 3, 359566, 359577, 369103

Holographic media for storing and reading holographic data is provided having one or more external or internal surfaces having structures for at least one of minimizing reflections from illumination incident the surface, or enhancing adhesion between surfaces within the media. Structures for minimizing reflections represent a grating pattern of subwavelength structures providing low reflectivity at the operating characteristics of holographic optical systems to use the media, such as spectral bandwidth, angular bandwidth, and polarization of illumination incident the media. Adhesion promotion may be provided by structures along an interior surface of the media, such as along an interfacing surface between photosensitive material of the media and a substrate material adjoining the photosensitive material. Such adhesion promotion may be provided by such structured surface with or without providing low reflectivity at the operating characteristics of holographic optical systems to use the media. The structures may be same or similar to one-, two-, or three-dimensional sinusoidal, triangular, staircase, moth eye, pyramidal, lamellar, or binary structures, or combinations thereof, and may be periodic or random.

7453611, Nov 18, 2008

Jun 9, 2006

11/450158

Daniel H. Raguin - Acton MA, US
David A. Waldman - Concord MA, US
George Barbastathis - Boston MA, US

STX Aprilis, Inc. - Maynard MA

G03H 1/20

359 12

An apparatus for replicating holographically recorded data, comprising a holographic master media having holographically recorded data thereon; a holographic copy media; a light source for generating a master reference beam and a copy reference beam, coherent with the first object beam, the first master reference beam incident on the holographic master media, the holographic master media diffracting the master reference beam to provide a first object beam; the copy reference beam incident on the holographic copy media; and a first optical relay system, disposed between the holographic master media and the holographic copy media, for relaying the first object beam from the holographic master media to the holographic copy media, the holographic copy media recording an interference pattern between the first object beam and the copy reference beam, thereby replicating at least a portion of holographically recorded data.

7728959, Jun 1, 2010

Jun 21, 2004

10/561646

David A. Waldman - Concord MA, US
Vincent Fedele - Harvard MA, US
Richard T. Ingwall - Newton MA, US
Daniel H. Raguin - Acton MA, US
John S. Berg - Franklin MA, US
Joby Joseph - New Delhi, IN
David L. Kent - Framingham MA, US

Aprilis, Inc. - Maynard MA

G06K 9/74

356 71

An apparatus for image acquisition of topological features of the surface of skin. The apparatus comprises a waveguide, having an entrance edge and top and bottom surfaces; a light source, configured to direct a light beam at the entrance edge of the waveguide; a skin contact layer, disposed at or near the top surface of the waveguides; a holographic optical element (HOE), disposed at the top or at the bottom surfaces of the waveguide, configured to diffract the light beam incident from the light source to the skin contact layer; a sensor array, configured to detect light reflected from the surface of skin in contact with skin contact layer; and means for compensating for changes in the Bragg matching condition of the HOE due to temperature.

7742210, Jun 22, 2010

Oct 10, 2008

12/287702

Daniel H. Raguin - Acton MA, US
David A. Waldman - Concord MA, US
George Barbastathis - Boston MA, US

STX Aprilis, Inc. - Maynard MA

G03H 1/20

359 12

An apparatus for replicating holographically recorded data, comprising a holographic master media having holographically recorded data thereon; a holographic copy media; a light source for generating a master reference beam and a copy reference beam, coherent with the first object beam, the first master reference beam incident on the holographic master media, the holographic master media diffracting the master reference beam to provide a first object beam; the copy reference beam incident on the holographic copy media; and a first optical relay system, disposed between the holographic master media and the holographic copy media, for relaying the first object beam from the holographic master media to the holographic copy media, the holographic copy media recording an interference pattern between the first object beam and the copy reference beam, thereby replicating at least a portion of holographically recorded data.