Abstract: A light managing screen may provide a rear projection screen, front projection screen or component thereof. The screen may comprise a polymeric composition including a first polymeric material, and a second polymeric material disposed as a plurality of elongated structures within the first polymeric material. Each elongated structure has a major axis and the major axes are substantially aligned. The first polymeric material has an index of refraction that differs by at least 0.01 from an index of refraction of the second polymeric material. In some instances, a pressure sensitive adhesive material is selected as the first polymeric material. The orientation of the elongated structures and the difference in indices of refraction results in the polymeric composition scattering light asymmetrically.

Abstract: A resin composition comprising (A) an elastomeric copolymer which comprises styrene monomeric units and diene monomeric units, and (B) a copolymer which comprises styrene monomeric units and (meth)acrylate monomeric units, which has a saturated water absorption of 0.8% or less at a temperature of 60° C. and a relative humidity of 90%, a flexural modulus of at least 1,800 MPa, a notched Izod impact strength of at least 2 kJ/m2, a total light transmittance of at least 85% and a haze value of 5% or less when providing a sheet having a thickness of 2 mm, and a Vicat softening point of at least 90° C. This resin composition can suitably be used as a base material of a sheet for a screen which has good transparency, suffers from less deformation such as warp or deflection, and is hardly cracked or chipped.

Abstract: A method for automatically controlling the length of a projection screen and an apparatus thereof are proposed. They dispose a code stripe on at least a side of the projection screen and then exploit a detector of an auto-controlled hoister to read the code stripe. The detected signal is converted into digital data for comparison with the data stored in a storage device of the auto-controlled hoister so that the auto-controlled hoister can control the length of the projection screen exactly. Hence, a multi-purpose apparatus can be provided.

Abstract: The invention provides a projection device comprising a screen constituted in a layered structure with a light-transmissive screen panel and a light-transmissive reinforcing panel, wherein a front panel in the screen has a plane wider than residual panels on the back of the screen, an image projector for projecting an image on the screen, a screen frame fit on the peripheral edges of the residual back panels with a plane smaller than the front panel, a double-side adhesive tape inserted between residual back panels and the screen frame for uniting them together, a single-side adhesive tape applied across the peripheral edges of the front panel and the screen frame for uniting them together, and a housing for accommodating therein the image projector and for holding at its opening the screen via the screen frame so as that the front panel of the screen exposes outside.

Abstract: A method of producing a big size holographic screen for projection of the stereoscopic or multiview 3-dimensional color images is proposed, where a narrow and elongate slit-shaped diffuser is recorded on the hologram as an object to ensure the well defined viewing zone forming in course of the image projection. As compared with the previous art the diffuser length is increased by the calculated value to provide undistorted color reproduction on whole screen surface. The parameters required for the recording of the holographic screen, including the position of a photoplate with respect to the diffuser, the position of a reference wave point source with respect to the diffuser, the distance from which an image is observed and so on are determined by consideration of the phase relationships between the reference, object, projector and reconstructed waves on the photoplate surface.

Abstract: An improved theater geometry which is capable of providing improved image resolution and improved image contrast over prior systems is achieved with a unique projection geometry and image re-mapping technique. The projected image is provided with a continuously variable image resolution and brightness over the surface of a preferably dome-shaped screen which is to receive the image, concentrating the resolution and the brightness of the image within the central field-of-view of viewers that are unidirectionally seated in the theater, and sacrificing resolution and brightness toward the outside edges of the viewers' field-of-view. The result is a more efficient use of available projector resolution and brightness, an increase in the number of quality seats available in the theater, and an enhanced image contrast due to reductions in the light which is scattering from image elements to the rear of the screen.

Abstract: A three-dimensional surface shape is produced from input numerical data. The shape of a sheet elastic material is determined by the positions of a matrix of control rods. The position of each of the rods is determined by a computer-controlled system. Each rod is fitted with two pneumatically controlled locking mechanisms, one for the X coordinate and one for the Y coordinate. When both locks on a particular rod are released the rod is free to move to a new position determined by an elevator. Once all of the rods have been adjusted they are locked in position and the surface has been configured. In one application, the surface can be used as a mold for casting a replica or in another application can be used as the screen in an image projection system.

Abstract: This invention relates to light transmitting filters comprising: (a) a light absorbing layer of material having a front surface and a back surface, (b) transparent microspheres embedded in the light absorbing layer and contacting the front surface of the light absorbing layer with portions of the microspheres protruding through the back surface of the light absorbing layer for transmitting light through the light absorbing layer, and (c) a conformed layer of optically clear material having a front surface and a back surface wherein the front surface of the conformed layer is in contact with and conforming in shape with the protruding portions of the microspheres, and wherein the back surface of the conformed layer has a textured finish. The invention also relates to methods of making these light transmitting filters.

Abstract: A front projection screen includes a plane base layer forming a plurality of parallel outwardly-protruding annular bars on the light-reflecting side surface thereof. Each bar contains an outside surface facing the projection light source and being a light-reflecting portion, and an outside surface not facing the projection light source and being a stray-light absorbing portion. The two surfaces intersect each other. All bottom interfaces between the bars and the base layer are in a common plane. All outside surfaces of these bars have a common focus point. The outside surface is arranged in such a manner that the outside surface of each bar does not block the projection light incident on the whole outside surface of its adjacent bar.

Abstract: An ultrathin optical panel, and a method of producing an ultrathin optical panel, are disclosed, including stacking a plurality of glass sheets, which sheets may be coated with a transparent cladding substance or may be uncoated, fastening together the plurality of stacked coated glass sheets using an epoxy or ultraviolet adhesive, applying uniform pressure to the stack, curing the stack, sawing the stack to form an inlet face on a side of the stack and an outlet face on an opposed side of the stack, bonding a coupler to the inlet face of the stack, and fastening the stack, having the coupler bonded thereto, within a rectangular housing having an open front which is aligned with the outlet face, the rectangular housing having therein a light generator which is optically aligned with the coupler. The light generator is preferably placed parallel to and proximate with the inlet face, thereby allowing for a reduction in the depth of the housing.

Abstract: A display has a screen which incorporates a light modulator. The screen may be a front projection screen or a rear-projection screen. Elements of the light modulator may be controlled to adjust the intensity of light emanating from corresponding areas on the screen. The display may provide a high dynamic range.

Abstract: An achromatic flat-panel projection display comprises a video projector 2a, a condensing lens (26) and a tapered transparent slab spreading the image input from the projector over the area of th slab. To compensate for dispersion in the slab a dispersive prism is used at the input edge of the slab, whose dispersion cancels out the dispersion of the slab. The prism can be a separate part of simply a bevel in the input edge, i.e. the thick end of the slab.

Abstract: A projector 10 projects an image onto a set of screens 14 for image formation. The set of screens 14 includes a first screen 50 and second screens 54 and 56. The projector includes a housing 20, a first screen fixture 74 and a second screen fixture 76. The housing 20 has an opening 30 for fitting the first screen 50 therein. The first screen fixture 74 positions the first screen 50 in the housing opening 30 and fixes an inner surface of the first screen 50 adhesively to the housing 20. The second screen fixture 76 is positioned between the first screen 50 and the first screen fixture 74, and fixes the second screens 54 and 56 between itself and the inside of the first screen 50.

Abstract: A projection screen includes a member that functions as a support for holding the screen upright when the screen is in an open-position and as a fastener for holding the screen shut when the screen is in a closed-position.

Abstract: A flat-panel display comprises a projector (21-23) illuminated by a collimate light source such as an infra-red laser, a waveguide (1) which ejects rays at a distance along the axis of propagation related to their angle of injection into the edge of the waveguide, an input slab (3) for magnifying the projected image in the width dimension in the plane of the panel perpendicular to the axis of propagation, and a phosphor output screen which converts the infra-red light to the visible. The use of monochromatic light within the waveguide reduces dispersion problems, and the use of a triad of projectors, each injecting at a different angle, makes registration relatively simple.

Abstract: A flexible screen with a mechanism for releasably attaching the screen to a transparent door or window is disclosed. A method of use is also disclosed.

Abstract: In varying embodiments, the present invention incorporates a combination of structures suitable for providing a lightweight and portable projection surface. In certain embodiments, the present invention includes a frame having four beams connected at the corners, with a collapsible brace at each corner, so that the frame can be collapsed for storage or transport. In certain embodiments, each beam may incorporate one or more collapsible inline braces in order to promote an even more compact profile when collapsed.

Abstract: A screen for a projector includes a Fresnel lens which concentrates incident light, a lenticular lens arranged on a front surface of the Fresnel lens and which forms an image by focusing light passing through the Fresnel lens, a protective panel installed on a front surface of the lenticular lens and which protects the lenticular lens, and a reflection reducing portion formed on one surface of the protective panel, wherein the reflection reducing portion reduces reflection of light by diffusely reflecting the light, and wherein the reflection reducing portion includes a core member capable of being emitted externally.

Abstract: This invention comprises a method and system for displaying free-space, full color, high-resolution video or still images while simultaneously enabling the user to have real-time direct interaction with the visual images. The system comprises a self-generating means for creating a dynamic, non-solid particle cloud by ejecting atomized condensate present in the surrounding air, in a controlled fashion, into an invisible particle cloud. A projection system consisting of an image generating means and projection optics, projects an image onto the particle cloud. Any physical intrusion, occurring spatially within the image region, is captured by a detection system and the intrusion information is used to enable real-time user interaction in updating the image. This input/output (I/O) interface provides a display and computer link, permitting the user to select, translate and manipulate free-space floating visual information beyond the physical constraints of the device creating the image.

Abstract: An ultrathin optical panel, and a method of producing an ultrathin optical panel, are disclosed, including stacking a plurality of glass sheets, which sheets may be coated with a transparent cladding substance or may be uncoated, fastening together the plurality of stacked coated glass sheets using an epoxy or ultraviolet adhesive, applying uniform pressure to the stack, curing the stack, sawing the stack to form an inlet face on a side of the stack and an outlet face on an opposed side of the stack, bonding a coupler to the inlet face of the stack, and fastening the stack, having the coupler bonded thereto, within a rectangular housing having an open front which is aligned with the outlet face, the rectangular housing having therein a light generator which is optically aligned with the coupler. The light generator is preferably placed parallel to and proximate with the inlet face, thereby allowing for a reduction in the depth of the housing.

Abstract: A projection screen is provided that includes a display surface having a plurality of elements. Each element has an optical property that is responsive to an appropriate applied voltage. The display surface may be configured so that the optical properties of each element may be coordinated with the projected image.

Abstract: Disclosed is a projection media comprising a transparent polymer layer with random light diffusing elements and having a Tg of less than 75° C.

Abstract: In a projector apparatus, one end of a fixing member is adhered to an outer peripheral portion of a back of a first screen, and a first pressing member having a protrusion is adhered to a back surface of the end of the fixing member. A fixing plate having a predetermined height is provided at an inside of housing frames, and a hole is formed in the fixing plate and a fixing protrusion is provided in the rearside of the hole. Further, a second pressing member is adhered to the outside of the protrusion of the front surface of the fixing plate. The fixing member adhered to the first screen is inserted from another hole and the fixing protrusion is engaged with the fixing hole formed in the other end of the fixing member.

Abstract: Selective reflective optical apparatus includes a projection screen. The projection screen has structure constructed and arranged to selectively reflect only incident optical energy of a predetermined number of narrow bands of optical wavelength regions.

Abstract: A screen unit includes a semipermeable screen sheet sandwiched between a first transparent sheet and a second transparent sheet. The semipermeable screen sheet transmits and reflects a projected image in a constant percentage. The first transparent sheet such as an acrylic sheet wider than the semipermeable screen sheet. The second transparent sheet is the same as the first transparent sheet.

Abstract: A projection screen (1) made of a laminated glass which has at least two glass plates (3, 4) bonded to each other by means of a layer of plastic (2) is described. In order to create advantageous construction conditions, it is proposed that the glass plate (3) facing the projection bears on its outer side (6) a translucent ceramic coating extending at least over the projection area and that the glass plate (4) facing away from the projection preferably has a surface roughness preventing reflections.

Abstract: A three-dimensional image optical system comprising of at least an elementary image optical subsystem constructed with plural afocal optical elements which include the first and the second optical components, wherein the plural afocal optical elements are aligned in a planar arrangement. The variety of the focal length to satisfy the afocal property is realized with the combination of the first optical components and the second optical components, that results in to provide the flexibility of the depth magnification, by which a remote observation is possible.

Abstract: A display system is provided that includes a light source configured to project an image, and a display surface configured to receive the projected image and at least partially compensate for a non-ideal spectral power distribution exhibited by the light source.

Abstract: A front projection screen for a video projection system is provided. The front projection screen includes a reflection screen surface, and a reflection material on the reflection screen surface, wherein the reflection material consists of a plurality of red, green, and blue color reflecting cells for receiving projected lights, absorbing a part of the projected lights having spectrums beyond ranges of red, green, and blue color spectrums, and reflecting a part of the projected lights having spectrums within ranges of red, green, and blue color spectrums back.

Abstract: A window is mounted in a wall between two adjacent rooms. The window has at least one suspended particle device glass pane that can be switched from a clear window mode to a partially reflective, partially translucent screen mode. A video image, such as a television program, can be projected onto the pane in its screen mode and is simultaneously viewable from either side of the pane and thus either of the two adjacent rooms. The window allows a parent in a kitchen, for example, to view continuously the programs children in an adjacent den are watching without physically leaving the kitchen to visit the den. The window screen provides dual room video program viewability without requiring multiple television sets.

Abstract: A system for enhancing the quality of an image on a screen is provided. The system typically includes an illumination source configured to produce light and direct such light along an optical path, and a time-varying focus device disposed in the optical path and configured to periodically alter incident light to enhance the quality of the image on the screen.

Abstract: The present invention provides an optical faceplate made from fibrous crystals which are transparent, colorless and work as a coherent faceplate. The numeric aperture of a single fiber is within a range of about 0.20 to 0.66. A nonlimiting example of such a fibrous crystal is Ulexite (also known as “TV” rock). In one embodiment the present invention comprises an optical faceplate made of a fibrous crystal in lab-created, artificially grown form. In a further embodiment, an optical faceplate is made of crystals not found in nature, or not found in nature in fibrous form. In one embodiment the present invention provides a seamlessly tiled projection display comprising at least one fibrous crystal faceplate as a pre-screen in combination with a diffused rear projection screen. A faceplate made of fibrous crystals does not have a size limitation. In one embodiment, smaller plates of crystals may be seamlessly tiled into a larger plate, satisfying the need for a large projection screen.

Abstract: A terrestrial telescope with a digital camera includes an objective lens group and a quick-return half-mirror located on the downstream side of the objective lens group. The quick-return half-mirror can be retractably inserted into the optical axis of the objective lens group. An image pickup device is provided downstream of the quick-return half-mirror, and there is an observation optical system for observing an image reflected by the quick-return half-mirror. The transmission surface of the quick-return half-mirror has a toroidal shape that corrects image-formation positional deviations caused by the insertion of the quick-return half-mirror.

Abstract: A projection screen that includes a multilayer, multiband, single stack device that selectively reflects light with wavelengths in plurality of narrow wavelength bands, and methods for making the screen. The multilayer, multiband, single stack device may be an etalon device. The multiple layers may be deposited on a diffusing substrate. The projection screen may also include a polarizer that coacts with a projector. The projector polarizes the projected light in the narrow wavelength bands into the same polarity and the screen reflects the light with the same polarization and does not reflect light of another polarization. The polarizer may include substrate with a thin polarizing coating. The screen may include a matte surfaced diffuser.

Abstract: The invention relates to a method for producing a non-solid projection screen (3), projection volume (8), or the like, the method comprising the steps of supplying and/or forming light scattering/reflecting scattering centres (4) to a substantially laminar transfer flow (2) to be transferred by said transfer flow (2). In accordance with the invention, the scattering centres (4) are supplied and/or formed to the transfer flow (2), to the central/inner parts thereof that remain laminar, away from the direct vicinity of the interfaces between the transfer flow (2) and the area surrounding thereof, in order to keep the projection screen in shape. In accordance with the invention, as the scattering centres (4) can be used light elastically or non-elastically scattering, solid liquid or gaseous substance.

Abstract: A light managing screen may provide a rear projection screen, front projection screen or component thereof. The screen may comprise a polymeric composition including a first polymeric material, and a second polymeric material disposed as a plurality of elongated structures within the first polymeric material. Each elongated structure has a major axis and the major axes are substantially aligned. The first polymeric material has an index of refraction that differs by at least 0.01 from an index of refraction of the second polymeric material. In some instances, a pressure sensitive adhesive material is selected as the first polymeric material. The orientation of the elongated structures and the difference in indices of refraction results in the polymeric composition scattering light asymmetrically.

Abstract: A flat mirror for folding an optical path in a casing of a rear projection television is arranged in the casing on not the side of a screen but a rear or upper side of the casing. In order to direct an optical path of an image projection to a flat mirror on a rear or upper side of the casing, a plurality of focusing mirrors, with which a light beam can be directed at a large angle with respect to a normal line of the screen and can focus an image through a shorter distance compared with a conventional lens system, are used. Since the light beam projected by the focusing mirrors is directed at high angle and reflected by the rear or upper side flat mirror in the casing, the light beam is focused on the screen provided on a front side of the casing.

Abstract: A marker for lens is provided as aligning unit in a lenticular lens that is of optical unit, and a marker for display panel is provided as aligning unit in a transmissive liquid crystal display panel that is of the display panel. Fixing unit is provided in at least a part of an area that encloses an image display area of the lenticular lens. An image display device is formed in such a manner that alignment between the lenticular lens and the liquid crystal display panel is performed by the marker for lens and the marker for display panel and the lenticular lens is fixed to a surface of the liquid crystal display panel on the side of a viewer.

Abstract: A three-dimensional image/two-dimensional image display device includes a plurality of display pixels, and a lenticular lens for three-dimensional display. Each display pixel is consisted of M×N number of sub-pixels to be viewed from N view points. A pitch a of sub-pixels arranged in the longitudinal direction of ridge projection of the lenticular lens and a pitch b of the sub-pixels arranged in a direction orthogonal to the longitudinal direction of the lenticular lens satisfy the following expression. The M×N number of sub-pixels included in each of said display pixels are formed within a square area.

Abstract: A projection apparatus is disclosed for displaying an image projected by a projector. The projection screen apparatus includes a frame, a screen, and a screen coupler configured to couple the screen to the frame.

Abstract: A presentation device for generating a virtual screen used for performing a pointing operation, has a photographing section of which an angle of view can be adjusted by operating a zoom function and a pan-and-tilt mechanism, a monitor for a presenter, displaying an image photographed by the photographing section, and a control section. A mark for generating the virtual screen is set on a photographing range of the photographing section or the monitor, a virtual screen area having a predetermined size is set within the angle of view of the photographing section based on the mark, and the control section generates XY coordinates of the virtual screen on the virtual screen area.

Abstract: A rear projection screen for use in a rear projection display apparatus contains a Fresnel lens sheet, a horizontal lenticular lens sheet capable of horizontally refracting the incident light, and a vertical lenticular lens sheet capable of vertically refracting the incident light, in this order from the incident side of the incident light, in which the lens center of the Fresnel lens sheet is arranged upward with respect to the mechanical center of the screen, and, in relation to this arrangement, black stripes of the vertical lenticular lens sheet are shifted with respect to the vertical lenticular lens.

Abstract: The MRI video system is a display system that provides visual stimuli to a patient who is undergoing diagnostic treatment within a magnetic resonance imagery (MRI) apparatus. The system utilizes a magnetically inert and RF shielded projector located in the close proximity to the MRI to transpose a video picture on a translucent screen inside the bore of the MRI. The patient views the screen through a prism.

Abstract: A projection screen and a method for manufacturing the same providing clear images regardless of the brightness of the environment where the projection screen is used.

Abstract: A method and systems for projecting an image onto a screen in high ambient light. The image is composed as pixels comprising selected intensities of preselected bands of visible light. The pixels are created by modulating three frequencies of light corresponding to hues in the red, green, and blue spectrum. The modulated light selectively generates pixels of a frame of the image. A diffusive projection screen has a triple bandpass light filter surface that selectively transmits preselected bands of light frequencies around the red, green, and blue spectrums of the modulated light source. The triple bandpass light filter is used with projection screens in front and rear projection systems. The hues of red, green, and blue may be generated from LEDs or from extracting the frequencies from a broadband source. The modulator system may comprise a time multiplexed single modulator design or a triple modulator design.

Abstract: An instrument panel including at least one instrument indicator positioned in the panel. At least one active display is positioned in the panel and is capable of displaying images from data provided to the display.

Abstract: The present invention relates to projection systems for displaying visual information in a variety of applications in order to reduce the projection area, the weight and the dimensions thereof. In one embodiment, the projection system for producing an external surface projection on a visualization screen comprises a flat and thin visualization screen for carrying out projection on both sides. Images can be watched on the left side and on the right side of this screen. From the surface of the screen and on the left and right sides thereof, projectors are provided for projecting images simultaneously on both sides of the screen. Light diffusers are provided on both sides of the screen. The projections are converted through the optics of the projectors so as to form reduced-divergence projection beams which are entirely captured by the light diffusers and which are diverted and diffused at wide angles of image observation ranges.

Abstract: A crystallization apparatus includes a mask and an illumination system which illuminates the mask with a light beam, the light beam from the illumination system becoming a light beam having a light intensity distribution with an inverse peak pattern when transmitted through the mask, and irradiating a polycrystal semiconductor film or an amorphous semiconductor film, thereby generating a crystallized semiconductor film. The mask includes a light absorption layer having light absorption characteristics according to the light intensity distribution with the inverse peak pattern.

Abstract: A phase shift mask is arranged before a laser device through a beam expander, a homogenizer and a mirror, and a processed substrate is set on an opposed surface of the phase shift mask with an image forming optical system therebetween. The processed substrate is held at a predetermined position by using a substrate chuck such as a vacuum chuck or an electrostatic chuck.

Abstract: An image projection system includes an image generator and first and second projection screens. The image generator respectively generates the first and second portions of the image on the first and second projection screens. The first projection screen projects the first portion of the image in a first color, and the second projection screen projects the second portion of the image in a second color. Such an image projection system is often less complex and less expensive than a conventional image projection system such as a projection television system. In addition, such a projection system often provides a higher-quality image than a conventional image projection system.