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Wesley P Townsend, 76Guttenberg, NJ

Wesley Townsend Phones & Addresses

Guttenberg, NJ   

Lawrence Township, NJ   

Lambertville, NJ   

41 Turner Ct, Princeton, NJ 08540   

Hopewell, NJ   

Savannah, GA   

Bluffton, SC   

Mentions for Wesley P Townsend

Publications

Us Patents

Methods For Making Microstructures

US Patent:
5439782, Aug 8, 1995
Filed:
Dec 13, 1993
Appl. No.:
8/165203
Inventors:
William H. Haemmerle - Florham Park NJ
William M. MacDonald - Lebanon NJ
Casimir R. Nijander - Lawrenceville NJ
Joseph Shmulovich - Murray Hill NJ
Wesley P. Townsend - Princeton NJ
Assignee:
AT&T Corp. - Murray Hill NJ
International Classification:
G02B 612
US Classification:
430321
Abstract:
Tapered optical waveguides (33') can be easily made by using photolithographic masking and etching to define on a substrate (21) a first polymer structure (22) having a substantially uniform thickness and a tapered width. The first polymer structure is heated sufficiently to form a meniscus along its entire length. The fluidity causes the material to redistribute itself such that, rather than being of uniform thickness, it has a thickness that varies with its width; consequently, the thickness as well as the width of the first polymer structure becomes tapered. The first polymer is cooled and hardened to form a second polymer structure (22') that has a tapered width and a tapered thickness as is desirable for a tapered optical waveguide. The second polymer structure itself can be used as a tapered optical waveguide, or it can be used to control the reactive ion etching of the underlying substrate. In the latter case, the configuration of the tapered second polymer structure is replicated in a glass substrate, for example, which then may be used as a glass tapered optical waveguide (33').

Free-Space Optical Interconnection Arrangement

US Patent:
5412506, May 2, 1995
Filed:
Mar 9, 1992
Appl. No.:
7/848456
Inventors:
Avi Y. Feldblum - Highland Park NJ
Jurgen Jahns - Shrewsbury NJ
Casimir R. Nijander - Lawrenceville NJ
Frank Sauer - Clarksburg NJ
Wesley P. Townsend - Princeton NJ
Assignee:
AT&T Corp. - Murray Hill NJ
International Classification:
G02B 632
G02B 634
G02B 518
G02F 103
US Classification:
359569
Abstract:
A diffractive and a refractive microlens component are combined into a doublet lens to obtain imaging properties that are improvements over those achievable using separate components. In one application, diffractive/refractive microlens arrays are arranged to provide a free-space optical permutation interconnect arrangement.

Methods For Making Microlens Arrays

US Patent:
5286338, Feb 15, 1994
Filed:
Mar 1, 1993
Appl. No.:
8/024035
Inventors:
Avi Y. Feldblum - Highland Park NJ
Keith O. Mersereau - Northampton PA
Casimir R. Nijander - Lawrenceville NJ
Wesley P. Townsend - Princeton NJ
Assignee:
AT&T Bell Laboratories - Murray Hill NJ
International Classification:
B44C 122
C03C 1500
C03C 2506
US Classification:
156643
Abstract:
During a reactive ion etching process (FIG. 5) for making lens elements (15, FIG. 4) in a silica substrate (12), the gas constituency in the reactive ion etch chamber is changed to adjust the curvature of lens elements formed in the silica substrate and to reduce the aberrations of such lens elements. For example, two gases, CHF. sub. 3 and oxygen may be supplied to the reactive ion etch chamber and, during the reactive ion etch process, the proportion of oxygen is significantly reduced, which reduces the aberrations of the lens elements formed by the process.

Composite Films With Langmuir-Blodgett Component

US Patent:
5024873, Jun 18, 1991
Filed:
Dec 5, 1988
Appl. No.:
7/280074
Inventors:
John J. Burack - Elizabeth NJ
Jane D. LeGrange - Princeton NJ
Wesley P. Townsend - Princeton NJ
Assignee:
AT&T Bell Laboratories - Murray Hill NJ
International Classification:
B32B 2700
US Classification:
428220
Abstract:
A Langmuir-Blodgett monolayer polyimide film and a bulk amorphous polyimide film are in contacting superposed relation to form a composite film having improved moisture resistance. The composite film may be either a free film or provide an insulating coating on the surface of a microelectronics device.

Methods For Making Planar Waveguides With Removal Of A Sacrifical Member Which Surrounds The Core

US Patent:
5387269, Feb 7, 1995
Filed:
Sep 3, 1993
Appl. No.:
8/115628
Inventors:
Casimir R. Nijander - Lawrenceville NJ
Wesley P. Townsend - Princeton NJ
Assignee:
AT&T Bell Laboratories - Murray Hill NJ
International Classification:
C03C 1500
US Classification:
65386
Abstract:
An optical waveguide is made by forming successively of light transmitting material a first clad layer (13), a core layer (15) and a second clad layer (18). The core layer has a higher refractive index than that of the first and second clad layers such that the core layer (15) can transmit light along its length as an optical waveguide. A sacrificial layer (14, 17) is formed surrounding at least a first end potion of the core layer. The sacrificial layer is selectively removed as by selective etching such that the first end portion of the core layer is separated from the first and second clad layers. With the end portion so isolated, a lens (22) can be formed on it such that light may be more effectively coupled to or from the core layer. Preferably, the lens is formed by heating the structure sufficiently to form a meniscus on the free end and then cooling it before the reminder of the core layer flows or melts. The cooling hardens the meniscus such that it constitutes an optical lens.

Method For Making Microstructures

US Patent:
5370768, Dec 6, 1994
Filed:
Oct 14, 1993
Appl. No.:
8/135644
Inventors:
Keith O. Mersereau - Northampton PA
Casimir R. Nijander - Lawrenceville NJ
Wesley P. Townsend - Princeton NJ
Assignee:
AT&T Corp. - Murray Hill NJ
International Classification:
B44C 122
H01L 21306
C03C 1500
C03C 2506
US Classification:
156643
Abstract:
Prior to the production of microlenses (29) by the reactive ion etch technique, a pattern of notches (25) is formed in a second surface of a substrate (11) opposite a first surface on which the microlenses (29) are to be formed. Reactive ion etching of the first surface to produce the microlenses is sufficiently deep to reach the pattern of notches, thereby to separate the substrate. The array of notches may define, for example, an array of first areas (26) on the second surface, each area being surrounded by a notch. Photoresist elements (28) are then each located on an area of the first surface corresponding to a first area of the second surface, so that the separation separates the substrate into a plurality of segments (26) each containing only one of the microlenses (29). The notches can be made such that each of the segments (26) is cylindrical so that each of the microlenses formed from the substrate has a circular outer periphery.

Compliant Overlay For Use As An Optically-Based Touch-Sensitive Screen

US Patent:
4816811, Mar 28, 1989
Filed:
Mar 15, 1985
Appl. No.:
6/715280
Inventors:
Eric L. Bogatin - Menlo Park CA
Xina S. Quan - Bridgewater NJ
Thomas A. Schwartz - Red Bank NJ
Wesley P. Townsend - Princeton NJ
Assignee:
American Telephone and Telegraph Company - Murray Hill NY
AT&T Technologies, Inc. - Murray Hill NY
AT&T Information Systems Inc. - Murray Hill DE
AT&T Bell Laboratories - Murray Hill NY
International Classification:
G09G 100
US Classification:
340712
Abstract:
A resilient and deformable touch screen that is adapted to be overlaid on the surface of a CRT screen is formed from a semi-rigid plastic frame attached to a flexible plastic pouch filled with a soft resilient material which adheres to the surface of the pouch.

Isbn (Books And Publications)

Target Costing: Market-Driven Product Design

Author:
Wesley P. Townsend
ISBN #:
0824746112

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