Eastman-kodak Company

Other

Torii Winding Machine Co., Ltd.

Techwell Consulting LLC

Rockwell, Thomas L.

Roddy, James E.

James E Roddy

Robert J Zolla

Badhri Narayan

William R Markis

Nelson Adrian Blish

Louis S Horvath

David D Kessler

Joshua Monroe Cobb

Richard L Druzynski

Sujatha Ramanujan

Martin E Oehlbeck

Richard A Stark

Laurie L Voci

Mark M Meyers

Mark E Bridges

James K Lee

Edward M Granger

Kevin J Klees

Richard J Federico

William M Barnick

Allan M Waugh

Robert H Cuffney

Leslie Gutierrez

Lou Horvath

Thomas L Rockwell

Dennis A Thompson

An apparatus is provided having a source for illuminating a remote surface with at least one wavelength of light (e.g., in the range of 940 to 970 nm), a detector for receiving returned illumination from the surface and providing an analog signal representative of the returned illumination, and a controller which samples the analog signal to obtain sample data representative of amplitude of light of the source returned from the surface by the detector. The controller determines the presence of water (or moisture, liquid, ice, vapor or heavy gases) on the surface in accordance with the sample data. An audible alarm is activatable by the controller. The source and detector are in a housing in perpendicular or non-perpendicular orientations with respect to the surface. Such housing being mountable at a distance from the surface where water detection is desired.

Apparatus and method for detecting the presence of water on a remote surface

A printing apparatus () for printing digital images onto a photosensitive medium () employing, for exposure energy, a light source () that uses various arrays of LEDs (). The printing apparatus () may form the print image using sequential modulation, one color at a time, or by applying all colors simultaneously. Arrangements of discrete LEDs () may include high-intensity devices configured with collector cones () arranged as a multicone structure (), with parabolic reflectors (), or collimating lenses (). Large area LEDs () may alternately be used, arranged on an angled mounting surface (), for example.

Light source using large area LEDs

A method for display of radar data includes performing a first radar scan to obtain, for at least one object (), a first range reading, a first azimuth reading, and a first altitude reading. A second radar scan is then performed to obtain, for the at least one object (), a second range reading, a second azimuth reading, and a second altitude reading. Position and travel direction of the at least one object () are computed within a predetermined cylindrical volume (), according to readings from the first and second radar scans. An icon () is assigned to the at least one object (). A reference point (R) is determined for the predetermined cylindrical volume. The icon () is then displayed within the predetermined cylindrical volume () in stereoscopic form.

Stereo display for position sensing systems

An improved autostereoscopic display apparatus () forms left and right virtual images for pupil imaging by forming, through a beamsplitter (), a real intermediate image near the focal surface of a curved mirror (). A circular polarizer () is disposed at a position between viewing pupils () and the beamsplitter (), minimizing glare due to stray light reflection from the curved mirror surface.

Autostereoscopic display apparatus having glare suppression

An imaging camera apparatus () for capturing images electronically and providing output data for four separate color channels, red, green, blue, and a fourth saturated primary color, expanding the color gamut over conventional three color channel cameras. An image acquisition unit () directs input light to one, two, or four photosensors () for obtaining four-color image data.

Four color image sensing apparatus

A system and method of stabilizing laser output levels includes a laser (), an injection circuit for injecting a radio frequency waveform, and a control circuit for energizing and stabilizing the laser. The radio frequency waveform injected by the injection circuit has a high duty cycle to maintain high output power while providing a stable multimode spectrum. A back facet photodiode sensor () detects radiation emitted from a back facet semiconductor laser () and provides a feedback signal to the control circuit () for maintaining the laser output power. The response of the photodiode is not fast enough to track intensity variations due to the RF waveform, and thus provides feedback to the control circuit () only when there is a substantial need to adjust laser power.

System and method for improving laser power and stabilization using high duty cycle radio frequency injection

An apparatus and method of printing images onto a photosensitive media () using multiple reflective spatial light modulators (). In the apparatus and method, illumination optics uniformize and image light from at least one light source () through polarization beamsplitting elements (). The polarization beamsplitting elements () divide the illumination light into two polarization states. One polarization state of the illumination light illuminates the reflective spatial light modulators () in a telecentric manner. The reflective spatial light modulators () are addressed with image data signals. The reflective spatial light modulators () modulate the polarized illumination light on a site by site basis and reflect the modulated light back through the polarization beamsplitting elements. The modulated light beams are combined to form an image, which is directed through a print lens assembly () to expose a photosensitive media (). The position of the spatial light modulators () can be changed, and a new image can be printed.

Method and apparatus for printing high resolution images using multiple reflective spatial light modulators

A two level image writer () forms an image from digital data onto a photosensitive medium. A first level illumination system has a first source () for emitting a first polarized light beam having a first color; a second source () for emitting a second polarized light beam having a second color; and a third source () for emitting a third polarized light beam having a third color. A fold mirrors directs each beam to a second level. Three polarizing beamsplitters () on the second level receive the polarized beams from the fold mirrors and isolate polarization states of each of the first, second, and third polarized light beam. Three spatial light modulators () on the second level modulate the first, second, and third polarized light beam from the polarizing beamsplitter prisms to form an array of image pixels according to said digital data. A diechroic combiner () combines the three modulated light beams.

Two level image writer

A printing method and apparatus () for pre-exposing a digital watermark along a length of photosensitive medium at the time of manufacture is disclosed. The printing apparatus has an illumination source () for providing an exposure illumination, first and second LCD spatial light modulators () for modulating the exposure illumination to form first and second exposure patterns according to image data, combining optics providing a single output path for directing both first and second exposure patterns onto the photosensitive medium and transport means for providing, during exposure, lengthwise displacement of the photosensitive medium with respect to the output path. The first and second exposure patterns form, lengthwise along the photosensitive medium, a latent image with modulated stripes having a predetermined intensity corresponding to the exposure patterns.

Method and apparatus for exposing a latent watermark on film

An apparatus and method of printing images () onto a photosensitive media () using multiple reflective spatial light modulators. In the apparatus and method, illumination optics () uniformize and image light from at least one light source through polarization beamsplitting elements (). The polarization beamsplitting elements () divide the illumination light into two polarization states. One polarization state of the illumination light illuminates the reflective spatial light modulators in a telecentric manner. The reflective spatial light modulators are addressed with image data signals. The reflective spatial light modulators modulate the polarized illumination light on a site by site basis and reflect the modulated light back through the polarized beamsplitting elements (). The modulated light beams are combined to form an image, which is directed through a print lens () to expose a photosensitive media (). The position of the spatial light modulators can be changed, and a new image can be printed.

A printing method and apparatus () for pre-exposing a digital watermark image onto a photosensitive medium () at the time of manufacture is disclosed. For exposure energy, the apparatus employs a single color light source () consisting of an array of LEDs. The LEDs are spatially modulated in intensity by means of a reflective LCD array (). The photosensitive medium () may be compensated to allow such single color pre-exposure while avoiding hue shift and contrast loss. The exposure at the film may be increased by: employing partial frame illumination, pulsing the LEDs with high currents with short pulse durations and low duty cycles, employing two LCD devices () to utilize both polarizations, and dichroically combining two LED () arrays of slightly different wavelengths.

Method and apparatus for watermarking film

An autostereoscopic optical apparatus () for viewing a stereoscopic virtual image comprises a left image to be viewed by an observer () at a left viewing pupil () and a right image to be viewed by the observer at a right viewing pupil (). The apparatus comprises a left pupil imaging system for forming the left image. A right pupil imaging system forms the right image.

Autostereoscopic optical apparatus

A display system () for digital color images using six color light sources () or two or more multicolor LED arrays () or OLEDs () to provide an expanded color gamut. Apparatus () uses two or more spatial light modulators (), which may be cycled between two or more color light sources () or LED arrays () to provide a six-color display output. Pairing of modulated colors using relative luminance helps to minimize flicker effects.

Growing community of inventors

Rochester, NY, United States of America

James E Roddy