Abstract: A method of simultaneously measuring the thickness, group index of refraction, and top and bottom surface profiles of a sample, includes the steps of locating the sample between a surface of a transparent optical flat and a parallel reflective surface such that the respective optical distances between any two of the surface of the optical flat, the top surface of the sample, the bottom surface of the sample, and the reflective surface are distinct and in a known relative optical distance relationship, the distance between the surface of the transparent optical flat and the parallel reflective surface being known.

Abstract: A lightweight mirror structure is formed from a unitary body of mirror blank material by using an abrasive water jet cutting apparatus to cut a plurality of cylindrical channels in the blank between and extending parallel to the mirror surface and the back surface of the mirror structure. The process may be employed to quickly produce inexpensive lightweight mirror structures.

Abstract: A method for enhancing the hue and lightness characteristics of a digital color image, the digital color image having pixel values from which digital luminance and color difference values can be deduced, includes the steps of: deducing digital luminance and digital color difference values for pixels of the digital color image; using the pixels of the digital color image to calculate an image dependent transform; using the image dependent transform to modify the digital luminance values for pixels of the digital color image to form modified luminance values; calculating a color transform that modifies the original digital color difference values in a manner that consistently and smoothly moves the values toward or away from predetermined digital color difference values; and using the color transform to modify the original color difference values for pixels of the digital color image to produce modified color difference values.

Abstract: A display apparatus, includes a laser light source for emitting a light beam; a beam expander for expanding the light beam; a spatial light modulator; beam shaping optics for shaping the expanded laser beam to provide uniform illumination of the spatial light modulator, the beam shaping optics including a fly's eye integrator having an array of lenslets; and a moving diffuser located in the laser beam between the laser light source and the spatial light modulator.

Abstract: A method for displaying a digital color image to a visually impaired person, includes the steps of: measuring the visual response of the person and specifying a set of enhancement profiles relating to the person's color and spatial frequency visual perception, adjusting the color content of the digital color image in response to a color content enhancement profile; adjusting the spatial frequency content of the image in response to a spatial frequency profile; adjusting the contrast of the image in response to a contrast adjustment profile; and displaying the adjusted digital image to the person.

Abstract: A method and a computer program for determining at least one component of a noise pattern of an imaging device.

Abstract: A method of manufacturing a display module, including the steps of: providing a substrate; and forming on the substrate using the same manufacturing process an image display having an array of addressable display pixels and pixel driver circuitry responsive to control signals and image data for driving the pixels; and a digital signal processing circuit having an input interface over which image data and control signals are received; a frame buffer for storing image data and from which image data is read during a display refresh; a display matrix driver circuit for receiving image data from the frame buffer and supplies control signals to the pixel driver circuitry; a control circuit for coordinating storage, retrieval, and display operations, such that the display module is capable of display refresh independently of external control; and an image processing circuit for improving the visual perception of the displayed image.

Abstract: A display apparatus includes a laser light source for emitting a light beam having a coherence length; a beam expander for expanding the light beam; a spatial light modulator; beam shaping optics for shaping the expanded laser beam to provide uniform illumination of the spatial light modulator, the beam shaping optics including a fly's eye integrator having an array of lenslets; a diffuser located in the light beam between the laser light source and the beam shaping optics; an electrically controllable de-speckling modulator for modifying the temporal and spatial phase of the light beam; and a projection lens for producing an image of the spatial light modulator on a distant screen.

Abstract: An image display device, including: a luminous display having a light emitting face for providing a luminous image; and a reflective image in a screen pattern located on the light emitting face, whereby when the luminous display is emitting light, the luminous image dominates, and when the luminous display is not emitting light the reflective image dominates.

Abstract: The invention relates to the color correction of images. The method is based on the assumption that the red, green and blue standard deviations, particularly of high frequency spatial information, as calculated in a particular space e.g. a power law space, should be equal.

Abstract: An image display device includes a substrate; a sparse array of light emitting elements formed on one side of the transparent substrate, the light emitting element being selectively addressable to form an image; an array of lens-lets located on the opposite side of the substrate, the focal plane of the lens-lets being at the one side of the substrate and the lens-lets being arranged with respect to the light emitting elements such that the light emitted by the light emitting elements is directed by the respective lens-lets to intersect at a common region associated with a predetermined viewing distance; and the sparseness of the array of the light emitting elements being such that the ratio of the light emitting area of the light-emitting element under a lens-let to the total area of the lens-let is less than or equal to 0.25.

Abstract: A digital color image display device, includes a plurality of pixels, each pixel having a plurality of subpixels with at least one of the subpixels producing a color other than red, green or blue.

Abstract: A solid-state area illumination lighting apparatus, including a plurality of light sources, each light source having, a substrate; an organic light emitting diode (OLED) layer deposited upon the substrate, the organic light emitting diode layer including first and second electrodes for providing electrical power to the OLED layer; an encapsulating cover covering the OLED layer; and first and second conductors located on the substrate and electrically connected to the first and second electrodes, and extending beyond the encapsulating cover for making electrical contact to the first and second electrodes by an external power source; and a lighting fixture for removably receiving and holding the plurality of light sources and having a plurality of first electrical contacts for making electrical connection to the first and second conductors of the light sources, and second electrical contacts for making electrical connection to an external power source.

Abstract: A digital image processing method for generating a low resolution, low bit depth digital image from a higher resolution, higher bit depth input color digital image, includes the steps of: generating a gray scale image from the input color digital image; generating a valley image; filtering the valley image with a rank order filter to produce a filtered valley image; thresholding the filtered valley image to generate a binary valley image; generating a shadow image and a highlight image from the gray scale image; combining the shadow image, the highlight image, and the binary valley image to produce a combined binary image; and sub-sampling the combined binary image to a desired low resolution.

Abstract: A system for monitoring the life cycle of an electronic apparatus of the type that creates an output data record such as an exposed photographic film, or a digital data, sound or image file, includes a sensor in the electronic apparatus for monitoring the operation and condition of the apparatus to produce operational data; means in the electronic apparatus for appending the operational data to the data record; a data record utilization device that receives and operates on the data record; and a digital processor in the data record utilization device having a software agent that retrieves the operational data from the data record, processes the operational data and produces a message related to the life cycle of the product.

Abstract: A method of processing interferometric data relating to a sample having multiple reflective surfaces, includes the steps of: specifying a set of acceptance ranges for peaks of interest in the interferogram, based on a knowledge of the sample; determining which peaks in the interferogram fall within the acceptance ranges; identifying which peaks within the acceptance ranges represent multiple reflections and eliminating these peaks from the interferometric data; identifying acceptance ranges which do not contain peaks; and employing other peaks in the interferogram to calculate the locations of peaks in the acceptance ranges that do not contain peaks.

Abstract: A method and system for processing photographic film images, includes the steps of: providing a film processor having a plurality of adjustable parameters for a given process for processing a family of photographic films; defining a plurality of processing profiles having different values of the adjustable parameters for different members of the film family; and chemically processing a photographic film that is a member of the film family using the processing profile for that family member.

Abstract: A method and system for photofinishing, includes generating a unique roll ID number for a roll of photographic film to be finished; recording customer order information for the roll of film; associating the customer order information with the unique roll ID number in a central computer facility; marking the roll of film with a machine readable version of the unique roll ID number; and reading the roll ID number on the roll of film, and accessing the customer order information from the central computer facility to control a photo finishing operation, whereby the roll of film can be transported to a photofinishing laboratory without the use of an envelope bearing customer order information.

Abstract: A display includes an electroluminescent display panel containing a light emitting material; a video interface circuit for producing an analog video signal for driving the display; an age circuit for supplying a signal representing the age of the light emitting material; an aging correction circuit responsive to the age signal for forming an analog aging correction signal, the aging correction circuit including, controller means responsive to the age signal for producing a digital correction value, and a digital to analog converter for converting the digital correction value to an analog correction signal; and a summing amplifier for summing the analog aging correction signal with the video signal.

Abstract: An image sensing device having an array of light-sensitive elements, including: a first type of element sensitive to a spectral region corresponding to luminance; a second type of element sensitive primarily to red light; a third type of element sensitive primarily to green light; and a fourth type of element sensitive primarily to blue light, the four types of elements occurring in repeating patterns.