JOSEPH FRANCIS REVELLI, JR
Pilots at Farm Brk Dr, Rochester, NY

4801184, Jan 31, 1989

Jun 15, 1987

7/062524

Joseph F. Revelli - Rochester NY

Eastman Kodak Company - Rochester NY

G02B 610

350 9614

Apparatus for writing and/or reading information on a recording element comprises an integrated optical write/read head of the type comprising a planar optical waveguide and means for deflecting a guided beam of radiation out of the waveguide at an egress zone and for bringing such beam to a focused spot on a desired data track on the recording element. Means, responsive to any displacement of such focused spot from a desired data track, is provided for selectively varying the effective refractive index of the waveguide in the vicinity of the egress zone in order to vary the tracking position of the spot. Such means comprises a pair of spaced parallel electrodes in close proximity to the egress zone, and means for producing an electric field between such electrodes, such field varying with the tracking error.

5723264, Mar 3, 1998

Mar 14, 1996

8/615938

Douglas R. Robello - Rochester NY
Joseph F. Revelli - Rochester NY
Jeffrey I. Hirsh - Rochester NY

Eastman Kodak Company - Rochester NY

G03F 740

430321

In a method for forming lenslets which collect light and focus it onto photosensitive elements of an electronic imager includes providing a transparent lenslet-forming layer on a substrate or on layers on the substrate, (a) providing a transparent polyester lenslet-forming layer on a substrate or on layer(s) on the substrate, the polyester containing repeat units, in part, having the structure ##STR1## wherein: n is 2 or greater; x is selected from the group consisting of H, CH. sub. 3, Br and Cl; and Z is selected from the group consisting of nil, O, S, CH. sub. 2, C. dbd. O, SO, SO. sub. 2, CH--CH. sub. 3, CH. sub. 3 --C--CH. sub. 3, CF. sub. 3 --C--CF. sub. 3, CH. sub. 3 --C--CH. sub. 2 CH. sub. 3, ##STR2## (b) forming a thin etch-stop layer on the transparent lenslet-forming layer and patterning the etch-stop layer to form a mask so that the pattern corresponds to lenslets to be formed; (c) anisotropically plasma etching the transparent lenslet-forming layer according to the pattern; (d) removing the thin etch-stop mask; and (e) thermally reflowing the patterned transparent layer to form the transparent lenslets.

5691116, Nov 25, 1997

Sep 20, 1996

8/710591

Joseph F. Revelli - Rochester NY
Jeffrey I. Hirsh - Rochester NY
Joseph Jech - Rochester NY
Douglas R. Robello - Webster NY
Stephen P. Barry - Albion NY
Alan C. G. Nutt - Rochester NY

Eastman Kodak Company - Rochester NY

G03F 700

430321

A method for forming lenslets which collect light and focus the light onto photosensitive elements of an electronic imager. The method includes providing a transparent lenslet-forming layer on a substrate or on layers on the substrate, forming a thin etch-stop layer on the transparent lenslet-forming layer and patterning a thin photosensitive resin mask on the etch-stop layer so that the mask pattern corresponds to lenslets to be formed. The method further includes transferring by etching the pattern of the photosensitive resin mask to the thin etch-stop layer to form a thin etch-stop mask, anisotropically plasma etching the transparent lenslet-forming layer according to the patterned thin etch-stop mask, removing the thin etch-stop mask, and thermally reflowing the etched transparent lenslet-forming layer to form the lenslets.

5327512, Jul 5, 1994

Mar 1, 1993

8/024716

Thomas L. Penner - Fairport NY
Nancy J. Armstrong - Ontario NY
David J. Williams - Fairport NY
Joseph F. Revelli - Rochester NY

Eastman Kodak Company - Rochester NY

G02B 610

385 3

A fully integrated electro-optic page-scanner comprises an optically-transparent waveguide made from an electro-optic polymer formed as a Langmuir-Blodgett film, and a linear array of electrically-addressable, spaced, parallel electrodes for selectively altering the refractive index across pixel-sized portions of the polymeric waveguide. Parallel addressing of the electrodes in accordance with the intensity pattern of a line of pixels to be recorded acts to modulate the phase front of an optical wave propagating within the waveguide in accordance with such line intensity pattern. Schlieren optics, also integrated with the page-scanner, convert the phase-front-modulated wave to an intensity-modulated pixel pattern which can be imaged onto a moving photosensitive recording element to record a two-dimensional (page) of image information. By using an electro-optic polymer formed as a Langmuir-Blodgett film as the waveguide, certain disadvantages of prior art scanning devices are eliminated.

5317666, May 31, 1994

Sep 29, 1992

7/953925

John A. Agostinelli - Rochester NY
Jose M. Mir - Webster NY
Joseph F. Revelli - Rochester NY

Eastman Kodak Company - Rochester NY

G02B 610

385122

An optical, waveguide, quasi-phase-matching frequency converter has integral means to vary the efficiency of the quasi-phase-matching frequency conversion process resulting in intensity modulation of the device output; said frequency converter has integral means to optimize the quasi-phase-matching frequency conversion process resulting in optimum device output; and said frequency converter has integral input signal polarization mode conversion means in optional combination with the conversion optimization means for modulating the optimized device output. Methods for modulating and optimizing the quasi-phase-matching frequency converted signal by electro-optically controlling the dispersion of the frequency converting medium are also disclosed.

5093874, Mar 3, 1992

Apr 1, 1991

7/678486

Gilbert A. Hawkins - Mendon NY
Joseph F. Revelli - Rochester NY
David J. Williams - Fairport NY

Eastman Kodak Company - Rochester NY

G02B 610

385 8

A fully integrated electro-optic page-scanner comprises an optically transparent waveguide made from an electro-optic polymer, and an electrode structure including a linear array of electrically-addressable, spaced, parallel electrodes for selectively altering the refractive index across pixel-sized portions of the polymeric waveguide. According to the invention, the addressable electrodes are disposed on a photoconductive substrate which facilitates poling of the polymer waveguide to rander it electro-optic in nature. During the poling process, the photoconductive substrate is made electrically conductive by flood illumination, while a uniform electric field is established between the substrate and a transparent electrode which overlies the waveguide layer, opposite the addressable electrodes. Preferably, the photoconductive substrate comprises undoped silicon which enables certain electrode-addressing circuitry to be integrated within the scanner structure.

5291567, Mar 1, 1994

Jul 21, 1992

7/916422

Joseph F. Revelli - Rochester NY
Thomas L. Penner - Fairport NY
Nancy J. Armstrong - Ontario NY
Douglas R. Robello - Webster NY
Jay S. Schildkraut - Rochester NY

Eastman Kodak Company - Rochester NY

G02B 610

385 8

An electro-optic waveguide deflector appropriate for use in an optical pickup head uses any film exhibiting high second order susceptibility such as nonlinear optic organic Langmuir-Blodgett films or nonlinear optic organic poled polymer films, or a liquid-crystal overlay cell. The deflector comprises a base support, a planar electrode layer disposed on the base support, a first buffer layer atop the first electrode layer, and an optical waveguide layer overlying the first buffer layer and planar electrode. When nonlinear optic films are used to form the waveguide layer, a second buffer layer is disposed atop the waveguide layer, and a pair of spaced electrodes is disposed atop the second buffer layer. When a nematic-type liquid-crystal overlay cell is used, it is disposed atop a passive dielectric waveguide, and a pair of spaced electrodes is disposed on the under surface of the liquid-crystal cell cover plate. The spaced electrodes are shaped so that selectively applying an electric field causes deflection to vary with the applied voltage according to the geometrical configuration of the spaced electrodes.

2007006, Mar 22, 2007

Sep 22, 2005

11/232555

Ronald Cok - Rochester NY, US
Joseph Revelli - Rochester NY, US
Joel Shore - Rochester NY, US
Lee Tutt - Webster NY, US
Donald Preuss - Rochester NY, US

H05B 33/00

313506000

An organic light-emitting diode (OLED) device, comprising: first and second non-metallic transparent electrodes, and one or more layers of organic material formed between the first and second non-metallic transparent electrodes, the layers of organic material including one or more light-emitting layers; and one or more non-metallic reflective layers located on a side of either of the first or second non-metallic transparent electrodes opposite to the organic material layers; wherein the device further comprises a light transmissive scattering layer in optical contact with the organic material layers and the electrodes or wherein at least one of the one or more non-metallic reflective layers comprises a reflective scattering layer in optical contact with the organic material layers and the electrodes. Additionally, a low-index layer is preferably employed in various embodiments to improve device sharpness.

5418871, May 23, 1995

Aug 23, 1994

8/294688

Joseph F. Revelli - Rochester NY
Alan C. G. Nutt - Rochester NY
Jay S. Schildkraut - Rochester NY
Eric J. Lim - Rochester NY
David A. Roberts - Rochester NY
David J. Williams - Fairport NY
Douglas R. Robello - Webster NY
Thomas L. Penner - Fairport NY
Sanwal Sarraf - Webster NY
Chih-Li Chuang - Pittsford NY

Eastman Kodak Company - Rochester NY

G02B 600, G02B 636

385 44

A mulitchannel optical waveguide page scanner has a diode laser and a primary optical channel waveguide. Light is coupled from the diode into the primary channel waveguide. Multiple secondary side channels each have a thin-film electro-optic waveguide modulator. A series of T-branch connectors distribute light from the primary channel to the secondary side channels. Each of the electro-optic waveguide modulators is addressable individually.

2003011, Jun 26, 2003

Dec 21, 2001

10/027293

Joseph Revelli - Rochester NY, US
Chris Honsinger - Ontario NY, US
Paul Jones - Churchville NY, US
Lawrence Ray - Rochester NY, US

Eastman Kodak Company

G03B021/32

352/090000

An apparatus for optically embedding hidden data in a source image, wherein the hidden data is updateable in real-time, the apparatus includes (a) optical masks bearing a data image and an encoding carrier image either or both of which may be updated in real-time; (b) optical components for convolving, the data image with the encoding carrier image to produce a spatially dispersed data image; and (c) optical beam combiner for combining the spatially dispersed data image with the source image to produce a source image containing embedded hidden data.