E.i. Dupont De Nemours and Company

Honeywell International Inc.

Corning Incorporated

Alliedsignal Inc.

Macrae Maxfield

Lawrence W Shacklette

Karl Wayne Beeson

Robert M Blomquist

Jian Ming S Deng

Scott Moore Zimmerman

Paul Michael Ferm

Deepti Pant

Brian R Christiani

Jose C Diaz

Kevin Battell

Michael Foley

Vinod R Sastri

The invention relates to a process a process for forming single-mode, organic waveguides employing organic polymeric materials. The process reduces dissolved and gaseous oxygen content to very low quantities, resulting in production of waveguides having superior properties and manufacturability. Also provided is a process for preventing loss of light due to cores having flared ends. A waveguide is produced by sequentially a layer of a liquid, photosensitive buffer and clad composition to a surface of a substrate; deoxygenating under vacuum; overall exposing under an inert gas actinic radiation to partially polymerize the compositions below a full curing. Coating a photosensitive core composition to the clad composition; deoxygenating under vacuum, covering with an inert gas atmosphere; positioning a photomask above, but not in contact with the core layer; imagewise exposing the core through a photomask pattern to actinic radiation to partially polymerize the core composition; developing core; coating a photosensitive overclad composition over the image areas of the core composition; deoxygenating under vacuum; overall exposing the overclad composition, under inert gas to actinic radiation to substantially fully cure the optional buffer composition, the underclad composition, the core composition and the clad composition.

Polymer waveguide fabrication process

A fluorinated polymerizable compound useful for fabricating planar optical devices includes at least one fluorinated alkylene or alkylene ether moiety and at least two terminal acrylate moieties, each terminal acrylate moiety being connected to one of the fluorinated alkylene or fluorinated alklene ether moieties by an ester linking group. The fluorinated polymerizable compounds, or macromers, of this invention are useful for forming optical components exhibiting a refractive index comparable to that of glass fiber waveguides, while also exhibiting very low absorption losses. Polymerizable compositions suitable for preparing optical components can be prepared by combining the macromers of the invention with a photoinitiator. Conventional optical monomers may also be employed, if desired.

Low optical loss polymers

An optical illumination assembly comprising an array of optical microprisms and microlenses for redirecting light from a light source. Such displays are used in a wide variety of applications such as backlit flat panel displays requiring a directed light source which provides an efficient output of light. The illumination assembly has a light transmitter optically coupled to an input end of array of microprisms through an optional diffuser, and a microlens on the light output end of each microprism. The microprisms have a light input end optically coupled to the light transmitting means and a light output end spaced from the light input end. Two pairs of oppositely positioned sidewalls having one an edge defined by said light input end and another edge defined by said light output end are positioned for reflecting of transmitted light toward the light output end; When light from the light transmitting means enters each microprism through the light input end, the light is directed by said sidewalls through the microprisms to each light output end and then through the microlenses. Optionally a light diffuser is positioned between the light transmitter and the input end of the microprisms.

Illumination assembly

This invention relates to a process of forming a composite material comprising a polymer matrix comprising a polymeric material and dispersed particles selected from the group consisting of platelet or fibrillar particles having average thicknesses of less than 50 and a maximum thickness of less than about 100 and fibrils having an average diameter equal to or less than about 200 and a maximum diameter of about 200 and having an organo metallic residue species covalently to said particles organo metallic species having a moiety which is compatible with a polymer species in the polymer matrix, or said species having a moiety which is covalently bonded to a polymer species in the polymer matrix or a combination thereof, said dispersed particles being present in an amount less than about 60% by weight of the composite material and to the composite material formed by such process

Polymer nanocomposites comprising a polymer and an exfoliated

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Teaneck, NJ, United States of America

Macrae Maxfield