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 computer generated image may be displayed inside an enclosure. The enclosure may include a transreflective surface so that the user can view the image generated by the computer system overlaid with a body part of the user. The computer generated images may move relative to the known position of the body part. As a result, the illusion is created that the physical body part interacts in a meaningful way with the computer generated image.

Abstract: A projection television including a CRT assembly projecting image beams, and a lower casing accommodating the CRT assembly therein. The projection television further includes a pair of grip parts inwardly recessed on opposite sides of the lower casing so that the CRT assembly is supported by the pair of grip parts. With this configuration, the projection television has a reduced weight with a simple structure, thereby facilitating transportation thereof and decreasing the cost of production and custody therefor. Further, the lower casing provided with the grip part is made of the conductive metallic material, thereby preventing deformation or deterioration due to changes in temperature and humidity, effectively discharging out heat generated from a CRT assembly, and effectively blocking EMI. Further, there is provided a reinforcing member made of the conductive metallic material, thereby effectively discharging out heat generated from a CRT assembly and effectively blocking EMI.

Abstract: The present invention relates to an optical engine of a projection television in which a path of illumination emitted from a light source is aligned to correspond with the image producer by turning a screw of a mirror device. The object of the present invention can be achieved by an optical engine of a projection television including a light generator, a mirror device for reflecting illumination emitted from the light generator thereby changing a path of the illumination, in which a reflection angle of the illumination can be adjusted, and a projection apparatus for enlarging and projecting the image produced in the image producer on the screen by reflecting the image to an incident illumination from the mirror device, wherein the path of the illumination is aligned to correspond to the whole image produced in the image producer to be projected on the screen by adjusting the mirror device.

Abstract: A shield plate mounting apparatus is disclosed which mounts a shield plate 4 on a casing 3 of a recording/reproducing apparatus 2 formed to be integral with a television receiver. In this shield plate mounting apparatus, a plurality of projection portions 7a to 7c are provided on the casing 3 at predetermined angular intervals to project therefrom. A slip-off preventing piece 8 is formed to be integral with each of the projection portions 7a and 7b and as to bend from the top end of each of the portions 7a and 7b in a direction nearly perpendicular thereto. A plurality of kinds of mounting angles &agr; of the shield plate 4 are set, and a plurality of through holes 9a to 9c respectively facing the projection portions 7a to 7c are pierced through the shield plate 4 correspondingly to each of the kinds of the mounting angles &agr;.

Abstract: A projection television including a CRT assembly projecting image beams and a reflecting mirror reflecting the image beams. The projection television has a support casing having support frames provided on both sides thereof below the reflecting mirror, receiving and supporting the CRT assembly, and a lower frame coupled to the bottom of each support frame, supporting the support frame. With this configuration, the present invention provides a projection television having a support casing whose weight is reduced, thereby facilitating transportation thereof and reducing the cost of production and transportation, etc., and further being unlikely to be deformed or deteriorated because of changes in temperature and humidity.

Abstract: A screen assembly for a projection television includes a screen panel, a lenticular screen and a Fresnel screen. The screen panel is attached directly to the television cabinet and sandwiches the Fresnel and lenticular screens therebetween. The screen panel projects laterally beyond the lenticular and the Fresnel screens and a recess may be provided in the television cabinet to receive the Fresnel and lenticular screens, so that the screen protection panel overlaps the front face of the cabinet sidewalls. In an exemplary embodiment, decorative bolts pass through the screen panel to secure the screen panel to the cabinet.

Abstract: A spring mounting clip is provided that preferably includes a spring arm coupled to and extending from a mounting base. The spring arm bends aside as the mirror is pressed against the back wall of a PTV enclosure and spring back to its original unstressed position once the mirror engages a notch in the lower arm portion. The notch preferably includes a locking surface that abuts and constrains the mirror. Alternatively, a spring mounting clip is provided that includes a spring lever arm coupled to and extending between a pair of support legs, which extend up generally at right angles from mounting feet. In operation, the arm, which includes a locking member moves inwardly toward the support legs as a mirror or other object presses against the arm and moves outwardly or freely springs away from the support legs once the mirror or object passes a transition region of the lower portion of the arm and is received by the locking member.

Abstract: An optical system includes a lens assembly fixed to a base for projecting an image light onto a surface; a DMD assembly movably disposed at one side of the lens assembly for reflecting the light irradiated from a light source onto the lens assembly; supporting members disposed at the one side of the lens assembly for supporting the DMD assembly; and an adjuster for moving the DMD assembly to adjust a tilt. The adjuster includes a guide member having a screw hole and fixed to the base; an adjusting screw driven into the screw hole for moving the DMD assembly along a lengthwise direction of the guide member; and a push rod having an end connected to the DMD assembly and another end connected to the adjusting screw. The DMD assembly is movable by adjusting the adjusting screw so that a tilt angle can be easily and precisely adjusted.

Abstract: A chassis of one size can be used in various sizes of projection unit. That is, in a projection type television receiver having a projection unit of various sizes, one chassis can be commonly used. As a result, the cost is reduced. Includes (a) a chassis including a lower cabinet, a lower cover, an image display device, a speaker system, an optical unit, and a control circuit, and (b) a projection unit including an upper cabinet, an upper back cover, a transmission type screen, and a reflection mirror, the chassis and projection unit are mutually linked. Preferably, the lower cabinet has a speaker box, and the speaker box is formed integrally with the lower cabinet. As a result, the rigidity of the lower cabinet is enhanced. Preferably, the lower cabinet has a left supplementary side wall disposed detachably in the left part of the lower cabinet, and a right supplementary side wall disposed detachably in the right part of the lower cabinet.

Abstract: A projection television has a screen that can be oriented toward the viewer. An image-projecting device produces an enlarged video image. A reflecting mirror reflects the enlarged image to the screen from behind such that the image is focused on the screen. A casing houses the screen, the image-projecting device, the reflecting mirror. At least one of the screen, image-projecting device, and reflecting mirror, and casing is tiltable such that the screen is oriented toward a viewer, so that the viewer is able to view the video image having a maximum luminance.

Abstract: The present invention is related to a multi-axis adjusting apparatus comprises a base with an upper surface, and each side of a central line of the base has at least one slot; a sliding seat, which is set on the upper surface of the base, and each of two ends of an upper surface of the sliding seat has at least one screw hole, each position of two sides of the upper surface of the sliding seat corresponding to the slot has at least one sliding plate, which has a U-shaped slot; a plurality of fixing screws, which are inserted into the U-shaped slot and the slot; a carrier, which is mounted on the upper surface of the sliding seat, and each of two ends of the upper surface corresponding to the screw hole has at least one fillister with one penetrating hole; plural adjusting screws are going through the screw holes and connecting to the penetrating holes by way of a floating structure.

Abstract: The present invention is disclosed an optical assembly comprises an optical engine in a carrier, which is fixed a lower frame on the one side of the carrier. The lower frame has an inlet approach to one side of the optical engine that enable the projection lens of the optical engine to extend the lower frame. A first mirror is fixed on the other side of the lower frame, in front of the projection lens. Exit of the lower frame is on the optical path of the first mirror and is disposed on an inlet of the upper frame. A second mirror is fixed on rear of the upper frame on the optical path along with the optical reflection path of the first mirror. The optical reflection path of the second mirror faces the exit of the upper frame, which is provided a screen.

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: The present invention is directed to an improved projection television system that integrates entertainment center cabinetry used to store electronic devices, media, and the like, with a projection television enclosure. The system of the present invention accommodates projection televisions of varying screen sizes, while using substantially the same entertainment center cabinetry. Accordingly, in one innovative aspect, the system incorporates interchangeable projection television screens and cabinetry that is adjustable to accommodate screens of different dimensions. The cabinetry is integrated into the enclosure of the projection television set as opposed to being stand alone, or separate, entertainment center cabinetry.

Abstract: A heat shielding plate is employed in a cathode ray tube (CRT) of a monitor which includes a front casing to which the CRT is integrally engaged, a rear cover integrally engaged with a rear surface of the front casing, and a printed circuit board (PCB) engaged to a lower portion of the front casing and mounted at a certain distance below the CRT. The heat shielding plate is mounted between the PCB and the CRT for preventing heat generated in the PCB from being transferred to the CRT, and for preventing any arc generated in the CRT from being transferred to the PCB. The display quality of the monitor is enhanced by shielding the CRT from heat generated in a PCB so as to prevent expansion of a mask in the CRT. The shield is also capable of preventing an arc generated in the CRT from being transferred to the PCB and damaging the PCB.

Abstract: A television receiver monitor intended to be built into a wall and used in connection with an audio/video entertainment center can be adapted to provide various visual aspects corresponding to the control capabilities of the user. When only a bezel surrounding the screen is visible, all controls are made through a control center unit of the audio/video entertainment center, so that the user must have a high degree of knowledge about the overall system, whereas when the bezel and a control panel are visible, the user need not extensively involve himself with the audio/video entertainment center except to control the audio portion of the program. When confronted with an unsophisticated or underage user, a speaker grill is provided in addition to the bezel and control panel, so that no interaction with the audio/video entertainment center is required by the user in order to enjoy a video and audio program.

Abstract: An “extra-folded” projection display system includes a selectively reflective material (e.g., a linear reflecting polarizer) placed immediately behind the system's imaging screen. The display system includes an image projector that projects an image beam containing light of a predetermined linear polarization toward the imaging screen. The linear reflecting polarizer reflects the light in the image beam away from the screen. The reflected image beam then encounters a ¼-wavelength achromatic retarder which converts the linear polarization to circular polarization. The image beam next hits a mirror that reflects the light back through the ¼-wavelength achromatic retarder, which converts the circular polarization back to linear polarization, with the polarization director rotated 90° from the original polarization director. The linear reflecting polarizer then allows the light to pass through to the image screen.

Abstract: A video projector is arranged with three color CRTs vertically aligned with respect to a forwardly located projection surface. The projection surface is in a room having opposite side walls on either side of said projection surface. The video projector is positioned closely adjacent either of said side walls, thus leaving the ceiling and floor areas of the room unobstructed. The arrangement facilitates non intrusive use of a video projector in a home environment.

Abstract: A shielding apparatus of projection television is disclosed. A metal shield casing made of metal plate members shields an optical block and a circuit block. Metal plate printed board holding sections are connected to the metal shield casing detachably at predetermined intervals, and hold the printed board. Connection sections of the metal shield casing elastically contact with the printed board holding section, and connect so as to conduct electrically with the metal shield casing. Further, a part of the metal plate casing of the printed board holding section is elastically fixed to the metal shield casing through the connection section, and shields the optical block and circuit block. Thus, the shield casing excellent in shielding effect of high frequency circuit and easy in servicing is presented.

Abstract: In a rear projector with a housing on whose front side is arranged a screen for displaying a video picture, with a brightness-modulated and color-modulated R-G-B light source for emitting a light bundle, with a deflecting device for scanning this light bundle, wherein the light bundle is deflected by the deflecting device over a total angle &agr; with respect to vertical scanning, and with a deflecting mirror which is located in the housing and arranged at an angle &dgr;, wherein the light bundle exiting from a real or virtual vertex of the total deflection angle &agr; is deflected onto the screen by the deflecting mirror, the virtual or real vertex located in front of the deflecting mirror lies at a location where the smallest angle &bgr; of the light bundle to the surface of the screen during deflection is less than 20° and the angle &dgr; is given by δ ≤ 45 ⁢ ° - α 4 + β

Abstract: A system for measuring the convergence alignment may include an optical system arranged to preferentially image and magnify the regions of a display screen outside the area normally viewed by users. That area may include convergence targets which may be associated with each corner of the display. That information may be provided as a unified image to an imaging sensor which may thereafter be utilized to analyze the information and if desired, make appropriate corrections.

Abstract: A screen assembly for a rear projection television set, including a frame portion extending about a viewing portion thereof, the viewing portion defining a lenticular screen. The frame and viewing portions may be formed as one piece, for example from injection molded plastic. The screen assembly includes a fastener for mounting the lenticular screen to a projection television set over an opening therein, and preferably for slidably mounting the lenticular screen in a focal plane thereof. The fastener may include slots extending horizontally along upper and lower regions of the frame portion for receiving slide rails attached to the television set. A set of projection tubes and a mirror mounted in the television set project a viewable image onto the lenticular screen.

Abstract: The power control apparatus in a display device including a button, a link bar and a power switch is provided. The monitor includes a bracket, a circuit board and a panel. The bracket includes a guiding slot. The button, which includes a first end and a second end, is located on the panel. The first end is provided to be accessed by a user. The link bar has a first end and a second end. The first end of the link bar contacts with the second end of the button such that the link bar moves responsive to movement of the button. The power switch, responsive to movement of the second end of the link bar, selectively applies a power supply to the circuit board. The link bar includes an engagement portion for engaging with and sliding longitudinally along the bracket. The link bar of the invention is easily installed and disjoined and does not occupy the space on the print circuit board.

Abstract: A video display is provided which includes a display screen mounted to a forward end of the video display, a video projector having a center of gravity, and a reflective assembly for directing light from within the video projector to the display screen. The video display further includes a frame for supporting the display screen, the video projector and a reflective assembly in an operative relationship. Stationary brackets are rigidly mounted to the frame, and projector brackets are rigidly mounted to the video projector. The projector brackets are pivotally mounted to the stationary brackets for rotating relative to the stationary brackets, about a pivot point. Rotating the projector brackets relative to the stationary brackets rotates the video projector relative to the frame, from a first position to a second position.

Abstract: A display apparatus with a shield unit which is easily mounted includes: a cathode ray tube for displaying images; a first cover in which the cathode ray tube is assembled; a cathode ray tube bracket fixed to the front case for supporting the cathode ray tube, and having a reeve in the rear, a shield cover installed in the rear of the cathode ray tube bracket for shielding an electric field, and having a coupling unit in the front; a guiding rail for shielding an electric field, and of the shield cover with the reeve formed on the cathode ray tube bracket; and a second cover coupled with the first cover for covering the shield cover.

Abstract: A television receiver includes a removable panel that physically supports an integrated circuit board that provides for external control of certain of the receiver functions. A telephone jack and an antenna jack are secured to the removable panel for enabling external access. The television receiver has a separate communications microprocessor that communicates with the master microprocessor controller and a power supply that provides low voltage power for external use.

Abstract: An electronic apparatus wherein a light receiving window is formed in a cabinet for passing therethrough an input command signal supplied from a remote commander to execute various control actions, so that desired operations can be performed by manipulating the remote commander. The window is formed in a blank portion of and/or between characters/figures inscribed on the cabinet or on a logo plate attached to the cabinet. A light sensor or a light emitter is disposed in a stage posterior to the light receiving window. When the apparatus is applied to a television receiver or a projector embedded in a wall by user's customization in a manner that only a display screen and a frame thereof are seen on the wall, the external design is not spoiled while the command signal from the remote commander can still be inputted properly.

Abstract: A rear projection type image display apparatus having an arrangement that a projection distance of a projection lens thereof is shortened and a density of mounting of parts relating to an optical system and an electric system is made higher. Furthermore, a width of a rear portion of a housing of the rear projection type image display apparatus is reduced rearwards at any position from the upper portion to the lower portion thereof, and the lower portion of a back cover is depressed inwards. Thus, a space required to install the rear projection type image display apparatus can be reduced, the rear surface of the apparatus can be disposed on a wall without any gap when the apparatus is installed along the wall, and the overall body of the apparatus can be received deep into a corner of walls when the apparatus is installed at the corner.

Abstract: An electronic appliance with a construction capable of maintaining a desired contact space between the control switch of its control circuit board coupled between first and second cases mating with each other and the control shaft of its control knob. A plurality of elastic members are provided at the second case to apply a resilience force generated therefrom to the control circuit board when they receive a force applied to the first case upon assembling the first case with the second case via the control circuit board, so that the control circuit board can move toward the first case in such a manner that an accurate contact space is maintained between the control knob fixedly mounted to the first case and the control switches of the control circuit board. Accordingly, an improvement in productivity and reliance is achieved.

Abstract: A projection type displaying apparatus with a movable built-in screen has an image display, an image projector and a position detector for detecting a position where the built-in screen is installed. When the position detector determines that the built-in screen is in an image projection pass, the focus of the image projector is adjusted on the built-in screen and the image projector projects the image onto the built-in screen. When the position detector determines that the built-in screen is out of the image projection pass, the focus of the image projector is adjusted on an external screen and the image projector automatically projects the image onto the external screen.

Abstract: A projecting unit is divided into substantial halves of a front cabinet provided with a screen on the front surface and a rear cabinet holding an optical unit box in the interior. The rear cabinet is fitted slidably and containably inside the front cabinet and is formed to be basket-shaped so that the greater part of the optical unit box may be exposed directly to the outside. Thereby, the projecting unit can be made light and compact and the transporting, installing and storing operability can be made efficient. Further, said screen can be fitted slidably forward and rearward to the front end part of the front cabinet by means of a screen pressing metal fixture and, even when plural projecting units are piled up, the screen will be able to be simply replaced.

Abstract: A method and an apparatus for positioning a projector, such as a video projector, in an enclosure, comprising a projector support surface, alignment rollers provided in connection with the support surface, and guides adapted to cooperate with the alignment rollers to guide the support surface, and a projector supported thereon, into a predetermined operative position within the enclosure.

Abstract: Disclosed is a rack pair for mounting speakers and system board in a monitor of a computer system being mounted behind a front frame of the monitor at two lower or upper corners thereof so that a distance left between the rack pair is substantially equal to a width of a system board disposed inside the monitor. The rack pair are characterized in that the rack each is formed at an inner side with a longitudinal groove which has a width slightly larger than a thickness of the system board to clamp the system board between the rack pair, that the rack each is provided with a connecting device extending toward a display tube in the monitor to connect a speaker cabinet member, and that a locater is provided at a lower portion of each rack for engaging with a fixing device provided behind the front frame of the monitor so that the rack pair for mounting speakers and system board can be firmly mounted in the monitor for the speakers to be mounted in the monitor together with the system board.

Abstract: A large format video display includes modular construction to permit the repair and exchange of single modules. Each module includes a pair of enantiomorphic side panels, each including top and bottom flanges and a rear flange extending inwardly. At the front end of each rectangular side panel, a plurality of formed bends define an integral rectangular column extending outwardly from the panel. A generally rectangular bottom tray includes a rear floor portion for supporting a video projector unit aimed toward the front of the module. A pair of ears extend outwardly from the front ends of the side panels, and are configured each to be engaged with the integral column of the respective adjacent side panel. The bottom tray is dimensioned to engage the bottom flanges of the side panels, so that the side panels support the weight of the bottom tray and the video processor.

Abstract: An audiovisual display system for displaying three dimensional images including an image source for projecting an image in a predetermined direction. A stage contained within the audiovisual display system provides a setting for the video image. A transparent screen is disposed between the predetermined direction of the video image source and the stage and is oriented at an angle less than 90.degree. to the line of sight and the predetermined direction so that the viewer views the stage and the video image projected onto the transparent screen so that the image appears to be positioned on the stage.

Abstract: A screen fixing device of a projection type television system including a projection unit comprises a fixing frame for detachably fixing a screen, the fixing frame being provided with a plurality of through holes each extending laterally of a front opening frame surround a front opening section at which the screen is provided, and a fastening screw penetrating each through hole for fixing the fixing frame to the front opening section of the projection unit. The fixing frame has substantially an L-shaped cross section at least at a portion through which the through hole is formed. Instead of the fixing frame, a fixing block may be used. The fixing device may comprise a plurality of first fixing members for detachably fixing the screen with a space with each other and a plurality of second fixing members for fixing the first fixing members to the front opening section of the projection unit. The first fixing members are formed of a transparent material.

Abstract: A rear projection type television unit comprises a television body having an outer casing in which electric and optical parts are accommodated and a front panel detachably attached to a front portion of the television body so as to entirely cover the front portion thereof. The television of the structure described above is accommodated in a wall structure of a chamber so that the front surface of the front panel lies on the same level as that of a front surface of the wall structure when the television body is accommodated in a wall structure. The television unit is safely and stably supported in the recessed portion formed in the wall structure by support members such as angle members secured to the side portions of the television body by engaging the same with support members secured to the wall structure.