252results about How to "Big image" patented technology

A digital imaging system and method using multiple cameras arranged and aligned to create a much larger virtual image sensor array. Each camera has a lens with an optical axis aligned parallel to the optical axes of the other camera lenses, and a digital image sensor array with one or more non-contiguous pixelated sensors. The non-contiguous sensor arrays are spatially arranged relative to their respective optical axes so that each sensor images a portion of a target region that is substantially different from other portions of the target region imaged by other sensors, and preferably overlaps adjacent portions imaged by the other sensors. In this manner, the portions imaged by one set of sensors completely fill the image gaps found between other portions imaged by other sets of sensors, so that a seamless mosaic image of the target region may be produced.

There is provided an electro-optical system, including at least two spaced-apart units, a head-mounted display (HIVID) unit, having a video signal source, a display source for displaying video signals from the display source, an optical module for projecting video signals from the display source into a user's eye, a driving electronic module, a power supply, and a portable control unit. The two spaced-apart units communicate by a narrowband wireless channel.

What is described here is an antireflective coating comprising a carrier layer consisting of an optically transparent material, which, at least on one surface side, presents antireflective properties with respect the wavelengths of the radiation incident on the surface. Moreover, methods of producing the coating are described.The invention excels itself by the provision that the antireflective surface side presents a surface roughness with stochastically distributed structures-the so-called macro structures-and that the macro structures are additionally modulated with surface structures presenting a periodic sequence-the so-called micro structures-which present period or cycle lengths smaller than the wave lengths of the radiation incident on the antireflective surface.

A folded telephoto lens system may include multiple lenses with refractive power and a light path folding element. Light entering the camera through lens(es) on a first path is refracted to the folding element, which changes direction of the light on to a second path with lens(es) that refract the light to form an image plane at a photosensor. At least one of the object side and image side surfaces of at least one of the lens elements may be aspheric. Total track length (TTL) of the lens system may be 14.0 mm or less. The lens system may be configured so that the telephoto ration (TTL / f) is less than or equal to 1.0. Materials, radii of curvature, shapes, sizes, spacing, and aspheric coefficients of the optical elements may be selected to achieve quality optical performance and high image resolution in a small form factor camera.

A compact telephoto lens system that may be used in a small form factor cameras. The lens system may include five lens elements with refractive power. Alternatively, the lens system may include four lens elements with refractive power. At least one of the object side and image side surfaces of at least one of the lens elements is aspheric. Total track length (TTL) of the lens system may be 6.0 mm or less. Focal length f of the lens system may be at or about 7.0 mm (for example, within a range of 6.5-7.5 mm). Lens elements are selected and configured so that the telephoto ratio (TTL / f) satisfies the relation 0.74<TTL / f<1.0. Materials, radii of curvature, shapes, sizes, spacing, and aspheric coefficients of the lens elements may be selected to achieve quality optical performance and high image resolution in a small form factor telephoto camera.

An optical scan unit (10) is configured to include a light source (11), a divergent light conversion element (12) having such positive power as to convert divergent light from the light source (11) into convergent light to form a spot on a projection plane, an optical deflector (13) deflecting a light beam from the divergent light conversion element (12) to a first scan direction and a second scan direction which is orthogonal to the first scan direction, and a deflection angle conversion element 14 (14) having such negative power as to convert a deflection angle of the light deflected by the optical deflector (13).

An imaging apparatus has image sensors, an imaging optical system of which relative position with the image sensors is fixed, and a merging unit which connects images obtained by imaging while changing the relative position between the image sensors and the imaging optical system. Aberration of the imaging optical system in an image obtained by each image sensor is predetermined based on the relative position between the imaging optical system and the image sensor. The merging unit smoothes seams of the two images by setting a correction area in an overlapped area where the two images to be connected overlap with each other, and performing correction processing on pixels in the correction area. A size of the correction area is determined according to the difference in aberrations of the two images, which is determined by a combination of image sensors which have imaged the two images.

An electromagnet comprising a ferromagnetic yoke which comprises a yoke. Mutually opposing first and second pole pieces are provided. The first pole piece is provided with a planar coil having a first side facing the yoke and a second side facing the yoke. A balancing member is arranged on the second side of the planar coil to counterbalance the attractive force between the planar coil and the yoke. The other pole piece may also be provided with a corresponding balancing member.

An image display apparatus that presents an observer an image of higher resolution than the original resolution of an image display device used, thereby allowing the observer to view a clear and beautiful image. An illuminating optical system (5) illuminates an image display device with illuminating light from a light source (1). The image display device displays an image by transmission or reflection of the illuminating light. A viewing optical system leads the image to an observer's eyeball (10). The apparatus has two image display devices (9a and 9b). An optical coupling / separating element having a light-coupling or light-separating action is provided between the image display devices (9a and 9b) and the observer's eyeball (10) to superimpose images of the two image display devices on one another. The optical coupling / separating element has an optical coupling / separating surface (40) tilted at an angle of approximately 45 degrees with respect to each of the image display devices (9a and 9b). The viewing optical system projects the superimposed images into one eyeball (10) of the observer as an enlarged virtual image.

A view finder according to the present invention has an electroluminescence display element which displays an image of an object, and an optical element which magnifies the image.

An optical unit for forming an object image according to the present invention comprises: a reflection member for banding an optical axis of the optical unit; a front lens group arranged closer to an object side of the optical unit than the reflection member; a rear lens group arranged closer to an image forming side of the optical unit than the reflection member; and a driver for driving the optical unit. The driver drives the reflection member and the front lens group in a predefined first direction and in a predefined second direction.

Talbot imaging systems comprising a Talbot element, a phase gradient generating device, a light detector, and a processor. The Talbot element repeats a Talbot image at a distance from the Talbot element. The phase gradient generating device scans the Talbot image at a plane at the distance from the Talbot element by incrementally changing a phase gradient of a light field incident the Talbot element. As the Talbot image is scanned, the light detector captures time varying data associated with light altered by an object located at the distance from the Talbot element. The processor reconstructs an image of the object based on the time-varying light data.

There is disclosed an optical device, including a light-transmitting substrate having an input aperture, an output aperture, at least two major surfaces and edges, an optical element for coupling light waves into the substrate by total internal reflection, at least one partially reflecting surface located between the two major surfaces of the light-transmitting substrate for partially reflect ing light waves out of the substrate, a first transparent plate, having at least two major surfaces, one of the major surfaces of the transparent plate being optically attached to a major surface of the light-transmitting substrate defining an interface plane, and a beam-splitting coating applied at the interface plane between the substrate and the transparent plate, wherein light waves coupled in side the light-transmitting substrate are partially reflected from the interface plane and partially pass therethrough.

Compact narrow angle lens systems that may be used in small form factor cameras. The lens system may include six lens elements with refractive power, and may provide lower F-numbers while maintaining or improving imaging quality and package size when compared to other compact lens systems. Total track length of the lens system may be 6.5 millimeters or less, for example 5.9 or 6 millimeters. Focal length of the lens system may be 7.0 millimeters or less, for example 6.6 millimeters. The lens system may include an aperture stop located behind the front vertex of the lens system, for example between the first and second lens elements, that effectively moves the ideal principal point of the camera to in front of the front vertex. The lens system may provide a focal ratio of 2.8 or less, for example 2.6 or 2.4.

A displacement sensor comprising an imaging unit and an image processing unit. The imaging unit comprises a two dimensional imaging device and a drive control unit. The two dimensional imaging device includes a group of light receiving pixels arranged in a matrix so as to correspond to a field of view of a standard imaging unit, a plurality of vertical shift registers corresponding to different columns of the pixels, and a horizontal register for receiving the outputs of the vertical shift registers from top stages thereof, a photosensitive pixel region being defined in a prescribed horizontal band having a sufficiently narrower width than that would be provided by the total number of horizontal lines and interposed between a front optically black pixel region and a back optically black pixel region. The drive control unit controls, according to a commanded electric charge transfer protocol, a feeding of signal electric charges from each light receiving pixel to the vertical shift register of a corresponding column, a vertical transfer of signal electric charges in the vertical shift register of each column, and a horizontal transfer of signal electric charges in the horizontal shift register. The image processing unit comprises electric charge transfer protocol command means for giving an electric charge transfer protocol to the drive control unit of the imaging unit in dependence of a content of the image process.

For applying a motion filter of a video stabilization system to a sequence of video frames, an estimate of a motion in the current video frame compared to a first video frame of the sequence of video frames is received. Based on the received motion estimate and on at least one state variable of the motion filter, a correction value for the motion in the current video frame is computed. The at least one state variable is updated in the computation. In case the computed correction value exceeds a system constraint of the video stabilization system, the at least one state variable is adjusted in accordance with an extent by which the system constraint is exceeded. The correction value is then recomputed based on the motion estimate and on the adjusted state variable.

A method and system to convert an electronic image file described in a page description language containing both contone and non-contone image objects to an intermediate binary format image. The intermediate format image separately encodes the contone and non-contone image objects. The contone image objects are edge-tagged. Prior to printing, the intermediate binary format page image is separated into the contone and non-contone image objects. The contone image objects are converted back to a contone form using the edge tagging to modify the filter weights of a digital filter. The non-contone image objects are converted to contone form by means of a pattern matching scheme.

An image recording apparatus includes: a carriage that carries a recording head capable of recording an image on a recording medium and reciprocates in a main scanning direction; a substantially box-shaped main frame having an open upper side and a pair of side plates extending in a sub-scanning direction orthogonal to the main scanning direction; and first and second guide members over which the carriage extends and by which the carriage is guided, the first and second guide members being disposed to be apart from each other by a predetermined distance in the sub-scanning direction, extended in the main scanning direction at the upper side of the main frame and fixed to the pair of side plates.

A method and system to convert an image described in a page description language to a contone image. The contone image is halftoned and encoded to generate image data including edge tag data and image data. A tagged state value of each pixel of image data within a predefined neighborhood of pixels is determined. The image data is filtered using a predetermined set of filter weighting values wherein each pixel of image data within the predefined neighborhood of pixels has an associated filter weighting value. A predetermined filtered image value is assigned to each pixel having a tagged state indicating an edge pixel. A summation of all filtered image values for the predefined neighborhood of pixels is assigned when the tagged state of the pixel is a non-edge pixel.

An interactive projection system for displaying an image on a planar surface includes a base, a projector, a convex mirror, and at least one support. The base is disposed on the planer surface. The projector is housed in the base. The projector has an image projecting portion that projects an image along a projection path away from the projector. The at least one support is connected to the base and supports the convex mirror at a position along the projection path so as to face the image projecting portion of the projector and the planar surface.

Two methods are disclosed to remove the image artifacts produced by Maxwell terms arising from the imaging gradients in an echo planar imaging pulse sequence. In the first method, the frequency and phase errors caused by the Maxwell terms are calculated on an individual slice basis and subsequently compensated during data acquisition by dynamically adjusting the receiver frequency and phase. In the second method, two linear phase errors, one in the readout direction and the other in the phase-encoding direction, both of which arise from the Maxwell terms, are calculated on an individual-slice basis. These errors are compensated for in the k-space data after data acquisition.

Taking a set of unlabeled images of a collection of objects acquired under different imaging conditions, and decomposing the set into disjoint subsets corresponding to individual objects requires clustering. Appearance-based methods for clustering a set of images of 3-D objects acquired under varying illumination conditions can be based on the concept of illumination cones. A clustering problem is equivalent to finding convex polyhedral cones in the high-dimensional image space. To efficiently determine the conic structures hidden in the image data, the concept of conic affinity can be used which measures the likelihood of a pair of images belonging to the same underlying polyhedral cone. Other algorithms can be based on affinity measure based on image gradient comparisons operating directly on the image gradients by comparing the magnitudes and orientations of the image gradient.

A display illumination module for the illumination of a rear-projection screen is provided in which an array of light sources are positioned adjacent to an optical modulating array layer for modulating the transmission of light emitted by the light sources. The light sources emit light within a defined angular range, and the optical modulating array layer is positioned relative to the array of light sources so that light from adjacent light sources does not overlap with the optical modulating array layer. One or more display modules may be incorporated into a display system that further comprises a rear projection screen that is preferably spatially offset from the optical modulating array layer so that light from adjacent light sources of a common colour overlaps on the screen. A composite display with seamless edge blending may be obtained by tiling multiple display illumination modules behind a common rear-projection screen.

An x-ray and gamma-ray radiation energy imaging device has its semiconductor detector substrate and semiconductor readout / processing substrate both mounted on opposite sides of, and electrically communicating through, an intermediate substrate. The substrates are all substantially planar with the top plan perimeter of the semiconductor readout / processing substrate falling within the top plan shadow perimeter of the corresponding semiconductor detector substrate with which it electrically communicates. Additionally, all of the readout / processing circuitry contacts of the semiconductor readout / processing substrate are disposed on the surface of the semiconductor readout / processing substrate that electrically communicates with the intermediate substrate. Substantially all electrical communication to and from the semiconductor readout / processing substrate is routed through the intermediate substrate. The intermediate substrate is a printed circuit board or similar construct. The electrical contacts between the semiconductor substrates and the intermediate substrate are accomplished using bump-bonds, conductive adhesive bonds, conductive adhesive films or a combination thereof. One or two dimensional planar arrays of semiconductor readout / processing substrates and corresponding semiconductor detector substrates can be mounted on a single intermediate substrate using “tiling” techniques known in the art to form a mosaic radiation imaging device of increased active imaging area and reduced / minimized imaging dead area.

An optical lens assembly for image taking, sequentially arranged from an object side to an image side, comprising: the first lens element with positive refractive power having a convex object-side surface; the second lens element with negative refractive power having a convex object-side surfaces and a concave image-side surface; the third lens element with positive refractive power having a convex image-side surface; the fourth lens element with refractive power having two aspheric optical surfaces; the fifth lens element with refractive power having a concave object-side surface and both aspheric optical surfaces; an image sensor disposed on an image plane and a stop provided for imaging a photographed object; specific relations being satisfied. Thereby, the optical lens assembly for image taking has good aberration correction, and can shorten the total length for use in compact cameras and mobile phones requiring high resolution.

A method for applying an ink image to a receiving material using a printer containing a carriage holding a print head, the carriage being moveable along a carriage scan-axis for applying the ink image to a strip of receiving material, transporting means for stepwise advancing the receiving material in a direction of advance, which extends to a direction substantially orthogonal to the carriage scan-axis, and a camera mounted on the carriage adjacent to the print head for detecting a reference pattern, wherein the camera is arranged for imaging an area which extends in the direction of advance, said method including the steps of: moving the carriage for printing a swath in a direction wherein the camera is positioned upstream to the print head, detecting the position of a reference pattern on the receiving material relative to the carriage, determining deviations in said position from a desired position, and adjusting the position of the receiving material in the direction of advance for at least partially correcting for the deviations during the movement of the carriage.