Eastman-kodak Company

Other

Anna L Hrycin

Dilip K Chatterjee

James Michael Chwalek

Gustavo R Paz-Pujalt

Liang-sun Hung

Andrew Frederick Kurtz

Michael Alan Marcus

Steven A Van Slyke

David D Kessler

John Andrew Lebens

Keith B Kahen

John P Spoonhower

John C Boutet

Christopher M Muir

James R Milch

Leslie G Moore

Michael K Rogers

Michael B Brandt

James R Kircher

Armin K Weiss

Donald DeJager

Thomas S Albrecht

Michael J Hanrahan

Walter S Piskorowski, Jr

Andrew M Dziel

Duncan A Richards

A light collector and detector for collecting and detecting light emitted, reflected or transmitted by a scanned information medium, comprising: a planar mirror assembly for extending the width of a scanned information medium and for disposition substantially perpendicular thereto, the planar mirror assembly having a lower edge adjacent to the scanned medium and an upper edge spaced from the lower edge; first and second pyramidal mirrors located side by side facing the planar mirror, the pyramidal mirrors having respective upper edges spaced from the upper edge of the planar mirror and respective lower edges spaced from the lower edge of the planar mirror, thereby to form aligned slots for the passage of a scanning beam of light to a medium to be scanned and for allowing light emitted by, reflected from, or transmitted by the scanned medium to enter the collector; wherein the first pyramidal mirror has a first aperture in an apex region thereof and wherein the second pyramidal mirror has a second aperture in an apex region thereof; a first photodetector having a light receiving face coextensive with the aperture of the first pyramidal mirror; a second photodetector having a lightreceiving face coextensive with the aperture of the second pyramidal mirror; wherein light from the scanned medium and reflected by the collector mirrors are received by the light receiving faces of the first and second photodetectors which generate electrical signals in response thereto.

Collector design for computed radiography

A method for controlling the deposition of an organic layer in making an organic light-emitting device includes depositing at a deposition zone organic material forming a layer of the organic light-emitting device and providing a movable sensor which, when moved into the deposition zone and is being coated during the depositing step, provides a signal representing the deposition rate and thickness of the organic material forming the layer. The method also includes controlling the deposition of the organic material in response to the signal to control the deposition rate and thickness of the deposited organic material forming the layer, moving the movable sensor from the deposition zone to a cleaning position, and removing organic material from the movable sensor to permit reuse of the movable sensor.

Reusable mass-sensor in manufacture of organic light-emitting devices

An organic vertical cavity laser light producing device includes a bottom dielectric stack reflective to light over a predetermined range of wavelengths; an organic active region for producing laser light; and a top dielectric stack spaced from the bottom dielectric stack and reflective to light over a predetermined range of wavelengths. The device also includes the active region in which is contained one or more periodic gain region(s) and organic spacer layers disposed on either side of the periodic gain region(s) and arranged so that the periodic gain region(s) is aligned with the antinodes of the device's standing wave electromagnetic field.

Organic vertical cavity lasing devices containing periodic gain regions

An amorphous upconversion phosphor comprising barium fluoride a combination of rare-earth fluorides including yttrium and lanthanum and dopants, and a waveguide thereof on a substrate selected to have a refractive index lower than a thin film of the phosphor material or any other substrate with an appropriate buffer layer of lower refractive index that the film wherein infrared radiation is converted into visible or visible and ultra violet light. The amorphous upconversion phosphor is deposited at temperatures low enough to permit integration into semiconductor materials.

Device for converting invisible and visible radiation to visible light

An amorphous upconversion phosphor comprising barium fluoride a combination of rare-earth fluorides including yttrium and lanthanum and dopants, and a waveguide thereof on a substrate selected to have a refractive index lower than a thin film of the phosphor material or any other substrate with an appropriate buffer layer of lower refractive index that the film wherein infrared radiation and visible light are converted to ultraviolet and visible light. The amorphous upconversion phosphor is deposited at temperatures low enough to permit integration into semiconductor materials.

An amorphous upconversion phosphor comprising barium fluoride a combination of rare-earth fluorides including yttrium and lanthanum and dopants, and a waveguide thereof on a substrate selected to have a refractive index lower than a thin film of the phosphor material or any other substrate with an appropriate buffer layer of lower refractive index that the film wherein infrared radiation and visible light are convened to ultraviolet and visible light The amorphous upconversion phosphor is deposited at temperatures low enough to permit integration into semiconductor materials.

Method of making a device for converting infrared radiation

A highly oriented thin film of specific barium fluoride materials deposited at low temperatures are useful as Upconversion waveguides.

Highly oriented metal fluoride thin film waveguide articles on a

Forming a color filter by vacuum depositing alternating layers of SiO.sub.2 and TiO.sub.2 at a temperature of less than 150.degree. C.

Patterned dichroic filters for solid state electronic image sensors

A composite optical interference filter is used in a film scanning system having a high speed CCD imager. Multiple, alternating, variable thickness layers of higher and lower index thin film oxides deposited on an optically transmissive substrate constitute the filter and enable the filter to provide color balance, notch rejection, and IR rejection all in the same device. Three such filters in a lamphouse of the film scanning system can be selected to match the system spectral response of the CCD imager and the film thereby providing equal density and color balance of the images on the film.

Composite optical interference filter for use in film scanner system

A beam splitter for color imaging apparatus is disclosed. The beam splitter comprises two prism elements which are joined together with a dichroic interference filter interposed between the two elements. An input beam to the beam splitter is divided into a first output beam which is reflected from the filter and a second output beam which is transmitted through the filter. In order to provide a beam splitter of a generally triangular cross section in which one of the output beams has the desired spectral content for a luminance channel in the imaging apparatus and the other output beam has the desired spectral content for a chrominance channel, the interference filter is formed of alternate layers of SiO.sub.2 and TiO.sub.2 and is disposed such that an input light beam to the beam splitter has a relatively small angle of incidence on the filter.

Beam splitter for color imaging apparatus

A telecine scanner is selectively conformed to evaluate the dye densities characteristic of either negative or print film. The film is interposed in a light path between a light source and a pickup stage that develops a plurality of color output signals from the light passing through the film. Color channel filters included in the pickup stage have spectral passbands in the respective colors that are broad enough to include the spectral dye densities of both negative and print materials. The scanner sensitivity is further limited to a particular film material by inserting an appropriate shaping filter set into the light path, preferably between the light source and the film, for conforming the peak sensitivity of at least one of the passbands to the peak spectral density of the corresponding dye of the particular film material.

Growing community of inventors

Rochester, NY, United States of America

Anna L Hrycin