Abstract: An apparatus and method for reducing the moiré effect in rear-projection displays by rotating the dark-stripe structure (711, 712) in the screen (71) 45±15 degrees relative to the displayed pixel structure. By rotating the dark-stripes (711) relative to the displayed pixels, the spatial frequency at which the moiré effect sets in can be improved by 15% to 41%.

Abstract: An adjusting apparatus comprises a base, and a supporting frame, a fixed plate, a sliding stand, and a carrier, which are sequential stacked on the base. An optical engine is fixed on the carrier. By rotating the adjusting device, the axis position of optical engine can be adjusted along sliding slots guided by bulges. By using arc surfaces of the sliding stand and the carrier, the adjusting apparatus clips and pushes the blocks of the carrier to adjust the left and right angle of inclination of optical engine. Therefore, the light beam provided by optical engine could project on a screen precisely and reach the optimum projection performance.

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 display device that is more compactly composed as compared with a conventional device by reducing the total width of a device, that is, the length between the rear of outer case and screen. The projection display device comprises an optical engine for projecting a light beam; a projection lens for magnifying and projecting the light beam projected by the optical engine; a reflection mirror for reflecting the light beam, magnified and projected through the projection lens, on the full screen of a screen; a screen for realizing an image using the light beam reflected by the reflection mirror; and a lower cabinet for supporting the screen, wherein a part of the optical engine mounted in the lower cabinet is protruded by a predetermined length in front as compared with the screen.

Abstract: Light radiated from a light source passes through a liquid crystal display device and a projection lens and is reflected by a mirror, thus reaching a screen. The projection lens has a zoom function to scale up an image displayed on the display device by an arbitrary scaling factor. A microcomputer determines, based on an image signal, the scaling factor of the image to be displayed on the screen and controls a projection lens drive motor so that the image displayed on the display device may be projected onto the screen, scaled up by this scaling factor.

Abstract: A reflecting optical element is disclosed which includes the following articles. The reflecting optical element is constituted by: a base member having a continuous curved-surface portion, and a resin layer integrally formed of resin on the curved surface of the base member, and having a plurality of mutually discontinuous curved surfaces to be reflecting surfaces. The base member is made of a material smaller in coefficient of linear expansion than the resin for forming the resin layer. Thus, a reflecting optical element is provided which is low in optical-performance deterioration caused by the temperature effect, and small in the number of restraints in fabrication.

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: A method and apparatus for producing an apparent increase in display brightness in an RPTV engine without an actual increase in total light output. Light is generated with an illumination source and optically processed to produce a light beam of rectangular format. The light beam is formed intentionally to have an intensity that is non-uniform, varying from a peak intensity at a center of the beam to a minimum intensity at a periphery of the beam. The optical processing step can include varying the intensity to selectively produce an illumination profile that decreases by at least about 30% to 70% from the peak intensity to the minimum intensity. The optical processing step can further include projecting the light beam through an integrator that is configured to produce an illumination profile that is at least partially controlled by a length of the integrator. The integrator can be configured so that a decrease in length will result in reduced uniformity.

Abstract: A merchandise display case and system are provided, comprising a frame housing an image projector, a mirror and a rear-display panel on which the merchandise is supported and displayed, to provide a view that is a combination of the merchandise and an image emanating from below or behind the merchandise. The emanating image and the selected placement and positioning of the merchandise on the emanating image can be coordinated physically and thematically to create a unique visual experience. The system is interactive, operative in default and interactive modes and includes various video image sources which may be selected by a customer who provides user input signals to a microcontroller subsystem which controls the plurality of video image sources and other components to be responsive to the customer.

Abstract: An image display device comprises an optical imaging arrangement for providing image information to illumination light and for transmitting the light as an optical image signal; a display for receiving the optical image signal and for displaying an image based on the image information; and a projecting optical arrangement including a reflecting part having a reflecting surface for reflecting the optical image signal, and a refracting optical part having a refracting surface for projecting the optical image signal onto the reflecting part. At least one of the reflecting surface and the refracting surface is aspherical.

Abstract: There is provided a rear projector capable of preventing entry of dust. A cabinet of the rear projector has a front side thereof formed with an opening. A screen panel slightly larger in size than the opening is attached to the front side of the cabinet such that the opening edge portion of the opening of the cabinet and the periphery of the screen panel are opposed to each other. The screen panel receives projection light projected from behind for image display, and thereby displays an image thereon. A projector unit is disposed within the cabinet, for projecting the projection light. A dust-proofing sealing member is disposed between the periphery of the screen panel and the opening edge portion, the screen panel is attached to the housing.

Abstract: There is provided a rear projection television having a construction which facilitates replacement of a light source lamp and repair work within the body. The rear projection television includes a screen panel disposed at the front of a cabinet thereof, for receiving projection light projected from behind for image display, to thereby display an image thereon, a light source lamp removably disposed within the cabinet, for projecting the projection light, and a working door provided in the front face of the cabinet. An opening-detecting sensor detects opening of the working door and outputs an opening-detecting signal. An illumination section for replacement work disposed within the cabinet illuminates the inside of the body. The control section causes the illumination section to light when the opening-detecting signal is outputted by the opening-detecting sensor.

Abstract: A system for a reduced moiré display has a lenticular screen, a projector, and means for disturbing at least a portion of the projector to cause displacement of the projection of pixels on the screen to reduce moiré. A method for reducing moiré projects a plurality of pixels onto a lenticular screen and disturbs the projector to cause displacement of the projection of pixels to reduce moiré.

Abstract: In order to provide a rear projector capable of facilitating position adjustment of an image displayed on a screen and optimizing dispersion of the aspect ratio of the projected image caused by tolerance of components by adjusting the position of the image, a support member (200) is provided with a lateral position adjuster (202) as a planar position adjusting mechanism attached on a support plate of an interior unit in an opposing manner, an inclination adjuster (203) as an inclination position adjusting mechanism vertically provided on the lateral position adjuster (202), and a rotary position adjuster (204) as a rotary position adjusting mechanism attached to the inclination adjuster (203) slanted downward toward rear side.

Abstract: An aerial projection system and method having a housing for positioning low cost optical elements capable of generating a three dimensional aerial images at video rates without reflected artifacts or visible display of the display screen. A method for generating the display images is based on a set of rules that eliminate boundary transgressions and maximizes the illusion of a three dimensional aerial image. An optional second display is a transparent imaging panel that acts selectively as a light valve, as a display platform for special effects or for providing the appearance of linear motion towards or away from the observer. An optional third display, also a transparent imaging panel, may be used as a background display device for displaying video rate images that are not projected aerial images.

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: An exhausting structure used in a rear projection TV has a ventilating chamber inside a casing of the TV to separate an optical engine from the casing. A fan is mounted in the ventilating chamber near the optical engine to ventilate the heat from the inside of the TV via a conduit and an outlet. The fan is isolated from outside of the TV to reduce any noise generated from the fan.

Abstract: Disclosed herewith is a rear projection optical system for being installed at a rear side of a screen of a rear projection apparatus. The rear projection system comprises: a display panel; a illuminating optical system for illuminating the display panel, the illuminating optical system being decentered from a screen center in both of a horizontal direction and a vertical direction; and a projection optical system, decentered from the screen center in the vertical direction, for projecting a display image on the display panel projected by the illuminating optical system onto a screen through a rear mirror positioned at a position that is the center of the screen. The projection optical system comprises a dioptric system, a deflection mirror, and a curved mirror in this order from the display panel to the rear mirror, and the curved mirror is decentered from the screen center in the vertical direction but centered against the screen center in the horizontal direction.

Abstract: A spatially modulated light beam is projected, reflected, and redirected through a prismatic optical panel to form a video image for direct viewing thereon.

Abstract: A projection television set having an enclosure housing a screen, an optical unit and a mirror, wherein the optical unit and mirror are capable of projecting an image onto the screen. The enclosure is preferably constructed from hollow plastic extruded panels. In addition, the enclosure preferably includes a duct extending upwardly from a lower portion of the enclosure to exhaust heat radiating from components housed therein to the exterior of the enclosure toward the top of the enclosure.

Abstract: An inflatable display includes an inflatable balloon, a projector having a projection lens, an internal support structure that supports the inflatable balloon and the projector so that the projection lens is eccentrically disposed inside the inflatable balloon. The inflatable display also includes an external support structure that supports the internal support structure. Also included is a method to control an inflatable display according to wind conditions. The method includes the steps of operating in a sensing mode, operating in a collapsing mode and operating in a recovery mode.

Abstract: The present invention comprises a carrier, an optical engine disposed on the carrier, and a hood member coupled to the carrier at the front end of the optical engine. The hood member has an inlet coupled to the optical engine and an outlet sealed with a screen. At least one mirror is placed in an optical path between the optical engine and the screen for reflecting a beam from the optical engine, and is disposed with an adjusting bolt at its backside for adjusting. The hood member wraps the optical path from the optical engine to the screen for keeping the optical engine outside and preventing the external dust, moisture, and temperature.

Abstract: A mounting system for three axis rotational adjustment of a light projector assembly of a projection television, the mounting system having a spherical wall and a spherical bracket slidably engaged with the spherical wall and moveable relative thereto. The wall and bracket coact with one another to rotate the light projector assembly about three axes, thereby restricting movement of the projector assembly to a portion of a spherical path and enabling adjustment of an image generated by the projector assembly on a screen of a projection television to a desired geometry without affecting picture centering.

Abstract: An apparatus and method for reducing the moiré effect in rear-projection displays by rotating the dark-stripe structure (711, 712) in the screen (71) 45±15 degrees relative to the displayed pixel structure. By rotating the dark-stripes (711) relative to the displayed pixels, the spatial frequency at which the moiré effect sets in can be improved by 15% to 41%.

Abstract: In order to provide a rear projector capable of facilitating position adjustment of an image displayed on a screen and optimizing dispersion of the aspect ratio of the projected image caused by tolerance of components by adjusting the position of the image, a support member (200) is provided with a lateral position adjuster (202) as a planar position adjusting mechanism attached on a support plate of an interior unit in an opposing manner, an inclination adjuster (203) as an inclination position adjusting mechanism vertically provided on the lateral position adjuster (202), and a rotary position adjuster (204) as a rotary position adjusting mechanism attached to the inclination adjuster (203) slanted downward toward rear side.

Abstract: A rear-projection screen 3, including at least a lenticular lens sheet 32 and a Fresnel lens sheet 31, is configured so that the lenticular lens sheet 32 contains, in a base material thereof made of a resin, light diffusing microparticles made of a resin having a refractive index different from a refractive index of the base material, and the light diffusing microparticles satisfy 0.5 &mgr;m≦&Dgr;N1×d1≦0.9 &mgr;m, where &Dgr;N1 represents a difference between a refractive index of the light diffusing microparticles and a refractive index of the base material of the lenticular lens sheet, and d1 represents an average particle diameter of the light diffusing microparticles. With this, a rear-projection screen with small wavelength dependency of diffusion characteristics can be provided utilizing only resins with general properties.

Abstract: A method and apparatus for producing an apparent increase in display brightness in an RPTV engine without an actual increase in total light output. Light is generated with an illumination source and optically processed to produce a light beam of rectangular format. The light beam is formed intentionally to have an intensity that is non-uniform, varying from a peak intensity at a center of the beam to a minimum intensity at a periphery of the beam. The optical processing step can include varying the intensity to selectively produce an illumination profile that decreases by at least about 30% to 70% from the peak intensity to the minimum intensity. The optical processing step can further include projecting the light beam through an integrator that is configured to produce an illumination profile that is at least partially controlled by a length of the integrator. The integrator can be configured so that a decrease in length will result in reduced uniformity.

Abstract: A rear projector (1) has a lower cabinet (13) disposing an image generator and an upper cabinet (12) for a screen body (51) to be mounted, two woofer boxes (60) being mounted on the front side of the lower cabinet (13) and high-pitched sound speaker boxes (70) being respectively mounted on the right and left lateral sides of the upper cabinet (12), so that, since the woofer box (60) is disposed in the lower cabinet (13), vibration is not easily transferred to a screen body (51) on the upper cabinet (12) and a reflection mirror inside the upper cabinet (12), thus avoiding flicker of the image on the screen body (51) even when great volume of sound is outputted by the woofer box (60).

Abstract: A projection television set having an enclosure housing a screen, an optical unit and a mirror, wherein the optical unit and mirror are capable of projecting an image onto the screen. The enclosure is preferably constructed from hollow plastic extruded panels. In addition, the enclosure preferably includes a duct extending upwardly from a lower portion of the enclosure to exhaust heat radiating from components housed therein to the exterior of the enclosure toward the top of the enclosure.

Abstract: A rear-projection display system comprises a light engine, a beam-splitter that receives light from the light engine, a projection lens that receives an image from the beam-splitter, a rear-projection screen, and a mirror that receives the image from the projection lens and reflects it onto the screen. The beam-splitter has a reflecting element, receives an image, and reflects the image off the reflecting element at an angle of incidence that is substantially unequal to 45 degrees.

Abstract: A video projection system employing a concave video screen which provides for enhanced depth cueing. A method of designing a variety of shapes of video screen surfaces by varying certain parameters of a common master equation. Video screen surface shapes providing optimum viewing for specific applications.

Abstract: An apparatus for fixing an optidal system for use in a projection display device having a cabinet forming a casing and an optical system disposed on the cabinet for forming an image and magnifying and projecting the image.

Abstract: A communication system for allowing a user (1) located in an observation zone to communicate with a person using a remote system at a remote location is provided. The communication system comprises a projector (6), a front projection screen (7), a two-way mirror (2), and a camera (3). The projector (6) is adapted to output a projected image along an image beam path. The front projection screen (7) has a downward-facing projection surface located in a plane above the projector (6). The image beam path impinges upon and illuminates the downward-facing projection surface of the screen (7) during use of the system. The two-way mirror (2) is located adjacent to and at an angle relative to the projection surface such that when the projected image is displayed on the projection surface, the projected image is reflected to the observation zone. The camera (3) is located behind the two-way mirror (2), such that the two-way mirror (2) is located between the camera (3) and the observation zone.

Abstract: In a rear projector for projecting an image from behind a screen, its screen size is variable. In order to permit flexible adaptation to the variation in the screen size, the projector is constructed to permit easy adjustment of a detection device for detecting an image display position or a position indicated on the screen.

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 merchandise display case and system are provided, comprising a frame housing an image projector, a mirror and a rear-display panel on which the merchandise is supported and displayed, to provide a view that is a combination of the merchandise and an image emanating from below or behind the merchandise. The emanating image and the selected placement and positioning of the merchandise on the emanating image can be coordinated physically and thematically to create a unique visual experience. The system is interactive, operative in default and interactive modes and includes various video image sources which may be selected by a customer who provides user input signals to a microcontroller subsystem which controls the plurality of video image sources and other components to be responsive to the customer.

Abstract: The rear projection television of the present invention comprises an optical assembly; an optical engine disposed on the lower supporting base of the optical assembly; a hood member coupled to an end of the supporting base at the front end of the optical engine; an inlet disposed on the hood member, the inlet having an elastic sealed cover which allows the projection lens of the optical engine to be extended inside the hood member and closely wraps the external diameter of the projection lens; a first mirror disposed in front of the projection lens; a second mirroris disposed on the upper end of the inner side of the hood member along the optical path of the small reflective projection lens. A screen is coupled to the outlet of the hood member along the optical reflection path of the second mirror.

Abstract: A stackable mechanical package for a digitally addressed projector (12N) includes a housing portion (22) having top and rear surfaces (44) that are shaped to form a contoured recess (46), and a pedestal portion (20) having bottom and front surfaces (60) that are sized to mate with the contoured recess when the package is in a shippable configuration. When a top side (50) of the pedestal portion is mated to a bottom side (32) of the housing portion, the stackable package is in a first operational configuration. Alternatively, when the stackable package is stacked below another similar stackable package (12F), the shippable configuration further forms a second operational configuration. The stackable package includes legs (24, 26) attached to and protruding from the pedestal portion to support the package apparatus in the first operational configuration or to fasten together the housing and pedestal portions when the package is in the shippable configuration.

Abstract: The present invention provides for a compact integrated front projection display system. The system comprises a frame having first and second portions and a foldable arm having first and second ends. The second end of the arm is connected to the first portion of the frame. The arm is moveable between a storage position and a projection position. The system also includes a retractable projection screen disposed on the second portion of the frame and a projection head mounted on the first end of the moveable arm.

Abstract: An apparatus for fixing an optical system for use in a projection display device having a cabinet forming a casing and an optical system disposed on the cabinet for forming an image and magnifying and projecting the image.

Abstract: A self-illuminating video screen system employing a concave display surface which provides for enhanced depth cueing. A method of designing a variety of shapes of self-illuminating video screen display surfaces by varying certain parameters of a common master equation. Self-illuminating video screen systems having display surface shapes providing optimum viewing for specific applications.

Abstract: A projection television set having an enclosure housing a screen, an optical unit and a mirror, wherein the optical unit and mirror are capable of projecting an image onto the screen. The enclosure is preferably constructed from hollow plastic extruded panels. In addition, the enclosure preferably includes a duct extending upwardly from a lower portion of the enclosure to exhaust heat radiating from components housed therein to the exterior of the enclosure toward the top of the enclosure.

Abstract: A projection apparatus including an optical unit for magnifying and projecting an image by using light of a light source and a reflecting member for reflecting the projected image from the optical unit. This projected image is reflected by the reflecting member onto a rear surface of a screen. The projection apparatus further includes a housing containing the light source and which has a plurality of housing surfaces and an air exhausting member for discharging interior heat of the housing with the air exhausting member including an air passage. First and second aperture sections are provided on different housing surfaces from each other for exhausting air from the housing. These first and second aperture sections communicate with the same air passage but are respectively exhausting air from the same air passage in generally perpendicular air path directions.

Abstract: A front projection screen and associated system and method are disclosed that utilize a back structured layer and a front diffusing layer to provide improved viewable image quality. The structured layer is formed with a plurality of grooves and can operate to direct light into a defined audience view region. The diffusing layer is coupled to the structured layer and is formed from a matte polyester film to provide dry erase capability on a front surface of the diffusing layer. For example, the matte polyester film can be TEKRA Marnot XL matte Melinex polyester film. Further, the structured layer can be formed as an acrylate linear prismatic structure having a gloss white coating. The acrylate linear prismatic structure and the matte polyester film can be coupled, for example, by lamination or can be coupled by being extruded as a unitary construction.

Abstract: Disclosed is a projection display apparatus in which the optical axis of a lamp and that of an optical unit can be easily made coincide with each other irrespective of dimensional variations of component parts. A lamp holder (32) is movably attached to a ride side plate (37) of a lamp case by extension springs (63). The center of a lamp (1) is positioned on the optical axis (20x) of an optical unit (20) by a circular arc wall face (32f) of the lamp holder (32) and a V-shaped member (45) fixed to the optical unit (20). The optical axis (1x) of the lamp (1) and the optical axis (20x) of the optical unit (20) are set to be parallel to each other by a slide reference face (20a) of the optical unit (20) and three projections of the lamp holder (32). Since the lamp holder (32) is not fixed to a lamp house, an influence of accumulation of dimensional variations of components such as the lamp house exerted on the adjustment of the optical axes of the lamp (1) and the optical unit (20) can be minimized.

Abstract: Disclosed herewith is a rear projection optical system for being installed at a rear side of a screen of a rear projection apparatus. The rear projection system comprises: a display panel; a illuminating optical system for illuminating the display panel, the illuminating optical system being decentered from a screen center in both of a horizontal direction and a vertical direction; and a projection optical system, decentered from the screen center in the vertical direction, for projecting a display image on the display panel projected by the illuminating optical system onto a screen through a rear mirror positioned at a position that is the center of the screen. The projection optical system comprises a dioptric system, a deflection mirror, and a curved mirror in this order from the display panel to the rear mirror, and the curved mirror is decentered from the screen center in the vertical direction but centered against the screen center in the horizontal direction.

Abstract: For providing a rear-projection type display apparatus, and a translucent type sheet for use therein, in particular, using an image modulation element, such as, a liquid crystal or a DMD (Digital Micro-mirror Device), etc.

Abstract: An apparatus and method for reducing the moiré effect in rear-projection displays by rotating the dark-stripe structure (711, 712) in the screen (71) 45±15 degrees relative to the displayed pixel structure. By rotating the dark-stripes (711) relative to the displayed pixels, the spatial frequency at which the moiré effect sets in can be improved by 15% to 41%.

Abstract: The present invention relates to a projection monitor, and in particular to a projection monitor having a darkroom casing capable of preventing a penetration of a foreign material and any leakage of light and easily assembling reflection mirrors which guide the image projected by the engine to a screen.

Abstract: This patent document discloses an interactive, disassemblable, portable multi-display system for displaying images. The multi-display system includes a multi-sided structure that is associated with at least two image projectors. The structure forms an enclosure wherein at least two of the sides have light transmissive portions. The image projectors may advantageously be disposed within the enclosure for projecting their respective image beams on the light transmissive portions of the side. At least two of the image beams produce viewable images on the light transmissive portions and, according to one embodiment, at least a portion of each of these image beams intersect without interference.