Abstract: Portable projection screen assemblies include: (a) a roller housing holding a roller with a flexible projection screen; (b) at least one substantially laterally extending screen support arm attached to the roller housing, the at least one screen support arm being configured to hold an outer edge portion of the flexible projection screen when the projection screen is in a laterally extended configuration; and (c) an outer housing case having an interior cavity sized and configured to hold the roller housing therein in a storage configuration. The roller housing is hingeably or releasably attached to the housing case and resides substantially vertically above the outer case in an operative position, whereby the outer housing case defines a support base adapted to reside on a support surface.

Abstract: A portable projector screen assembly includes a roller, two cylinders slidably connected to two ends of the roller respectively, a collapsible member connected to the roller, and a screen. The collapsible member includes a plurality of interconnected pieces. Two free ends of the collapsible member are fixed to free ends of the cylinders respectively. The screen includes a plurality of fixing portions, and the fixing portions are respectively connected to joints of each two pieces of the collapsible member.

Abstract: The winding projection screen comprises a support structure, a winding roller and a projection sheet wound on said roller. The support structure comprises a top horizontal support plane and a vertical engagement face for projecting engagement at a wall. In this way, the support structure for the winding screen itself becomes a furnishing element; it can for example be shaped like a shelf, or else be used as the lower part of a hanging cabinet piece.

Abstract: The method applies to a motorized screen device comprising a screen windable on a winding tube, and at least one means for latching the free end of the screen defining a position termed latched in the direction of winding, the latching being activated in this direction if the free end of the screen previously reaches at least one position of reversal, to which corresponds for the unwinding a value of angular position of the winding tube termed the position of reversal of rotation, situated beyond the latched position in the direction of unwinding of the screen. According to the method, in a mode of configuration of the latching of the screen, the installer proceeds merely to record the value of a chosen angular position, termed the recorded rotation reversal position, this position being situated at the level of or beyond the position of reversal of rotation, in the direction of unwinding of the screen.

Abstract: A front projection screen assembly comprising, a rectangular sheet of a flexible screen material and a roller on which said flexible screen material may be wound and unwound, said flexible screen material defining a first plane in the unwound condition. The front projection screen assembly comprises top, bottom, left-hand and right-hand side frame members, framing said rectangular sheet of flexible screen material along respective top, bottom, left-hand and right-hand sides thereof. At least said side frame members comprise shape memory members.

Abstract: A screen onto which an image light may be projected includes a flexible screen body, a first and a second storage member, and a retention member. The first storage member includes a screen wind-up section that winds up the screen body and supports either one of opposing end portions of the screen body and a base body that supports the screen wind-up section. The retention member includes a substantially orthogonal column that extends along the screen body and a pair of arm members that couple the column and the first and second storage members together. One end of each of the arm members is respectively rotatably coupled to the first and second storage members and another end of each of the arm members is rotatably coupled to the column.

Abstract: Portable projection screen assemblies include a case comprising a flexible projector screen held on a roller, the screen has a high ARR and a high-gain and can be adapted for use in uncontrolled indoor ambient lighting conditions. The case is configured with releasably matable first and second housing members and a slidably collapsible frame that slides open in a side-to-side orientation and unrolls the projector screen to at least one predetermined viewing configuration and closes together to encase the screen and frame therein. The projector screens may be particularly suitable for use with low-lumen projectors.

Abstract: The front projection screen comprises firstly a support layer of substantially black color suitable for rolling onto a roll-up tube, and a weight at its bottom edge, and secondly a projection surface that is substantially white or pale gray, being smaller in size than said support layer, and being fastened to the support layer via a junction at its top edge and overlying the face of the screen that is to receive projection.

Abstract: There is provided an image projection system for use with a light post disposed adjacent a thoroughfare. The image projection system includes a projection device configured to project an image for observation by a viewer on the thoroughfare. A projection device support member is connected to the projection device and is also connectable to the light post. The image projection system also includes a display screen moveable between a deployed configuration and a stowed configuration. The display screen is disposed for observation by the viewer and in optical communication with the projection device to display the image projected by the projection device when in the deployed configuration. The display screen is withdrawn from view by the viewer when the display screen is in the stowed configuration. A display screen support member is connected to the display screen and is also connectable to the light post.

Abstract: The invention relates to a masking device (1), for a cinema screen, comprising at least two masks arranged in front of said screen (2) and arranged in pairs, symmetrically along at least two sides thereof, left and right, and/or top and bottom, each mask comprising a rolling axle (7) and a cloth (8) rolled around said axle. Each cloth has a rolled edge (10) and a free edge (9), characterised in that at least the lower mask (6) and/or the pair of left (18) and right (19) masks have a tensioner (12), for holding the free end of the cloth thereof, the length of the tensioner being greater than the length of the cloth and means for controlling the position of the tensioner in a plane essentially parallel to the plane of the screen (2) and in a direction perpendicular to the direction of unrolling of the cloth such that each cloth (8) can be unrolled from the axle (7) thereof in the direction of the centre of the screen (2) to adjust the masking surface of said mask.

Abstract: A retractable display apparatus (10) comprises a housing (12), a drum (14) journalled for rotation in the housing, a display sheet (16) wound on to the drum, and a slot (22) in the housing through which the display sheet can be unwound from the drum against the action of a return spring, wherein a flexible leader strip (28) extendable through the slot is provided for releasably attaching the display sheet to the drum (14) in an easy and convenient manner outside the housing (12). The leader strip (28) has ribs (28.2) along both longitudinal edges, one rib being engageable with the drum and the other with an undercut formation (30) secured to the display sheet (16).

Abstract: An inflatable structure for viewing video images or projected images, the inflatable structure comprised of a plurality of panels sewn or heat welded together to form a desired shape, the interior of the structure being constructed of a series of honeycomb/baffles or tubes for stability, the inflatable structure having an inlet port in communication with a blower unit for inflation of the structure, the inflatable structure having an outlet port for release of air pressure within the inflatable structure when desired, one face of inflatable structure being formed with a fastening means in order to secure a flexible resilient panel of white pigment or silver pigment or other desired pigment to form a screen onto which the video or projected image is projected.

Abstract: An electric roll-up limit device includes a tube coupled by a tube rotor to an electric motor. The tube rotor contains a rocker bar that extends from the tube and activates a lower limit switch when a sheet of material is fully unrolled from the tube. A base below the tube rotor contains a pull bar cavity and an actuator device with a rotatable support frame and a rotatable actuator lever. The support frame supports the actuator lever and prevents it from rotating in one direction to activate an upper limit switch. A spring couples the rotation of the support frame and the actuator lever. When the sheet is fully rolled onto the tube, the pull bar cap retracts into the pull bar cavity and butts against the support frame. This causes the support frame to release the actuator lever, which then rotates to activate the upper limit switch.

Abstract: A portable screen assembly includes: a casing having an opening extending in a longitudinal direction on the upper surface thereof, and formed by a pair of separable case members that extend in the longitudinal direction; a spring-biased roll rotatably mounted in the casing; a screen wound around the spring-biased roll in a storage position and extended from the opening in use; a top bar fixed to one end of the screen which is used as a cover body to close the opening in the storage position; and an extendable column having one end erectably pivoted from a center part of a side face of the casing to hold the screen in a stretched state.

Abstract: A portable screen assembly includes: a casing having an opening extending in a longitudinal direction on the upper surface thereof, and formed by a pair of separable case members that extend in the longitudinal direction; a spring-biased roll rotatably mounted in the casing; a screen wound around the spring-biased roll in a storage position and extended from the opening in use; a top bar fixed to one end of the screen which is used as a cover body to close the opening in the storage position; and an extendable column having one end erectably pivoted from a center part of a side face of the casing to hold the screen in a stretched state.

Abstract: A portable screen assembly includes: a casing having an opening extending in a longitudinal direction on the upper surface thereof, and formed by a pair of separable case members that extend in the longitudinal direction; a spring-biased roll rotatably mounted in the casing; a screen wound around the spring-biased roll in a storage position and extended from the opening in use; a top bar fixed to one end of the screen which is used as a cover body to close the opening in the storage position; and an extendable column having one end erectably pivoted from a center part of a side face of the casing to hold the screen in a stretched state.

Abstract: A portable screen device including a casing, an extendable screen, and an extendable screen supporting column which has one end pivotally supported at a center portion of a back surface of the casing. The column can be pivoted to an extended position for holding the screen in an extended state. The column includes a plurality tubular members which slide with respect to each other. A lowermost tubular member has a first column lock mechanism for engaging the lowermost tubular member with an adjacent, upper tubular member to maintain the column at a desired height. A column lock releasing mechanism including a pedal is provided for releasing the engagement between the lowermost tubular member and the upper tubular member.

Abstract: A bag type portable screen device is disclosed. A screen is coupled with a rotary rod with ½ to ? the size of a conventional screen to complete a screen case. The screen case is coupled with one of upper and lower sides of a bag, and has rings to fix the screen, when the rotary rod rotates to open and use the screen. The screen is released from the rings to carry. The screen may be a fixed type reflective screen whose end is fixed to the bag. Since the bag accommodates a laptop computer, and a projector, the bag type portable screen is convenient to carry, install, and use.

Abstract: A portable screen device having a dual shaft structure is disclosed. A left and a right rotation shafts are installed to an upper rod and the center of a lower frame of a screen in the horizontal direction and are connected to a left and a right supports. The rotation shafts are engaged with each other by a single adjusting device. When the screen moved up, the elasticity of the screen is held by left and right elastic wheels such that height of the screen is maintained. A magnet and a magnetic substance contact each other and are separated from each other at the central portions of the left and right supports. Due to rotation of a rotation rod installed in the intermediate portion of the supports, the screen moves up and down. Therefore, volume and weight of the portable screen device are reduced and the stability is increased.

Abstract: A support foot is mechanically fastened to an information handling system chassis with a coupling device partially embedded in the support foot through injection molding of the support foot over the coupling device. For instance the coupling device is a staple made of ductile metal having a body embedded in the support foot and two legs extending outward towards the chassis side of the support foot. The legs insert in openings at a chassis attachment point and bend to secure the support foot to the chassis. For instance, the staple legs are formed from a ductile metal, such as brass, aluminum or steel, that is bent by hand or by a machine to a closed staple shape.

Abstract: Embodiments of apparatuses, methods and systems for deployable projection screens are generally described herein. Other embodiments may be described and claimed.

Abstract: Disclosed is a three-dimensional image forming screen in which, on the basis of a screen substrate having functions of scattering and transmission, polarizing lines for separating and transmitting left and right images from projectors are formed at one surface of the screen substrate and curved surface lines are formed at the other surface of the screen substrate to have the same direction and size as those of the polarizing lines. With this configuration, scattering and transmission of light, separation, transmission, and combination of left and right images, and expansion of the separated images are performed by the single screen, so as to achieve a wide viewing angle of the screen and to allow a viewer to watch a three-dimensional image having a high vividness without assistance of polarizing glasses. When being coupled with a rotating rod that is rotated by a motor, the three-dimensional image forming screen takes the form of a roll-up screen.

Abstract: There is provided a portable screen device which has a smaller size, a smaller weight and a simple structure and is easy to handle. The present invention relates to a portable screen device including an expendable column having one end erectably pivoted at a center portion of back surface of a casing and, in an erected state, holding the pulled out screen in a stretched state. The column is constituted by a plurality of tubular members which can sidably extend and contract with respect to one another, wherein the tubular members are configured in the form of a nest. The lowermost tubular member is provided with a first column lock mechanism for engaging the lowermost tubular member with the upper tubular member next thereto to maintain the column at a predetermined height. Further, there is provided a column lock releasing mechanism for releasing the engagement between the lowermost tubular member and the upper tubular member next thereto, in conjunction with the pressing of a pedal.

Abstract: A mobile screen storage compartment that stores a video display screen and is attached to one side of a truck trailer. The screen is extended, retracted and held in place using hydraulic lift devices and stabilizing devices stored in the compartment along with the display screen. Command and control of storage compartment components are provided by power, computer audio and video equipment stored within the mobile truck trailer. Electric cables connect the storage compartment components to equipment within the mobile truck trailer. The mobile screen storage compartment will allow for delivery of pre-recorded movies and shows or live broadcasts to large outdoors audiences.

Abstract: Disclosed is a double-sided image film screen including a plastic material having a high optical transmission property and a light-refracting material, made of silica, having an optical transmission property and a refractivity of 1.4˜2.5, wherein a content and a particle size of the light-refracting material and a thickness of the film screen are designated such that an image incident on the film screen by means of light projected from a projector is dividedly displayed on front and rear surfaces of the film screen, thereby displaying the image formed thereon though the front and rear surfaces thereof, increasing the visibility of the image and eliminating a hot spot generated by a projection light source of the projector. Compared to conventional screens, the double-sided image film screen is advantageous in that it displays the image through the front and rear surfaces thereof.

Abstract: A projection display device having a plurality of transmission screens, each having an image display portion of different dimension, and each having light transmissivity and being provided with a back surface layer having optical directivity on a back surface side; a main body capable of projecting a projection light, and a optical unit that guides the projection light from the projection device main body to the back surface of the transmission screen; and a supporting unit that supports one transmission screen selected from the plural transmission screens and the projection device main body. An image is displayed on the transmission screen by allowing the projection light guided by the optical unit to pass through from the back surface side. One transmission screen is selected, and the selected transmission screen, the projection device main body, the optical unit, and the supporting unit are assembled for use.

Abstract: A reflex-type screen includes a base which has saw-tooth appearance, and an optical absorption layer on one edge of each saw-tooth of the base. The base consists of white resin and includes a plurality of projector side inclined planes and non-projector side inclined planes, which are alternately provided to form the saw-tooth appearance. The projector side inclined planes are oriented so that the image light from the projector may be incident on them, while the non-projector side inclined planes are oriented so that the image light from the projector may not be incident on them. The optical absorption layer is formed on each of the non-projector side inclined planes of the base to absorb the light. The projector side inclined plane reflects the image light just in front of the observer of the reflex-type screen from the projector.

Abstract: It is an object of the present invention to provide a self-standing manually operated elevating screen which makes it possible to raise and lower the screen over a long period of time without encountering any trouble such as damage, deformation or the like, and which makes it possible to simplify the construction used for this purpose. The upper-end supporting member 4 to which one end of the screen 1 is connected and the base member 3D to which the other end of the screen 1 is connected are pivot-connected by left and right linking mechanisms 5, 5. Urging means 16, 16 which are used to urge the lower side arms 13, 13 upward are provided, and slide members 20, 20 that are free to slide are fit over either the let and right upper side arms 11, 11 or the left and right lower side arms 13, 13, or both.

Abstract: Images are projected onto a projection medium including a screen, which forms an open, light-penetrable structure having a plurality of light-reflecting surface parts. The projection medium may include a screen that is perforated or net-like, such as tulle or bridal veil, or that includes transparent and opaque or light-reflecting areas. The projection screen may be positioned within a shop or another room having a show window or display window spaced from the screen. A control device, such as a touch screen, for controlling the operation of the projector, may be positioned so as to be accessible to a viewer outside the room.

Abstract: A display device (1) has an extendible screen (2) and at least one extendible side member (3). The extendible screen (2) is extendible in an extension direction from a relatively compact form to an extended form. The screen (2) in the extended form has opposed edges (17) that are substantially parallel to the extension direction. An extendible side member (3) is provided for at least one of said opposed edges (17). The or each extendible side member (3) is extendible to provide support to and structural rigidity to the screen (2) when the screen (2) is in the extended form. The display device (1) provides an extendible rigid screen (2) suitable for example for creating a rigid collapsible tablet computer, or enabling a compact portable display to support a rigid touch-screen, or for incorporation into a mobile phone or remote control unit.

Abstract: A projection screen unit includes a first projection surface optimized for a predetermined range of ambient conditions and a second projection surface optimized for a second, different range of ambient conditions.

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: An electric projection screen roller and balance rod assembly. The electric projection screen roller and balance rod assembly includes a projection screen roler assembly and a balance rod assembly. The projection screen roler assembly is composed by a main body and an inserting piece, and the projection screen balance rod assembly is composed by a left half portion and a right half portion. A curved against member of the inserting piece is provided to be caught in the inlaying socket of the main body, so as for the upper end section of a projection screen to be firmly secured between, and the lower end section of the projection screen is firmly secured between the left and right half portions of the projection screen balance rod.

Abstract: A retractable screen system suitable for portable, hand held computing and communication units joins a number of optical sheets to form a rollable, extendible and retractable projection sheet. The resulting folded optical system provides a lightweight, portable unit. Telescoping arms allow the screen to be extended and stowed quickly and easily. High screen resolution is afforded by multiple mechanisms that scan concurrently. Beam indexing of the screen permits the precise alignment via feedback, and an embodiment fit for military, command and control applications.

Abstract: A screen system is disclosed for displaying an image projected by a projector or for partially or fully blocking light from entering a room. The screen system includes a housing and a screen assembly. The housing includes a plurality of extruded housing segment and at least one coupler configured to couple the segments together.

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 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 screen system is disclosed. The screen system includes a screen housing, a screen positionable in the screen housing, and a screen mount. The screen mount is configured to support the screen in the screen housing.

Abstract: A projection screen apparatus for reproducing the coherence between a visual image and associated acoustic signals. The projection screen apparatus includes a sound broadcasting device and screen that is transparent to sound waves disposed between the sound broadcasting device and the audience, whereby the projection of video and sound broadcasting are simultaneously implemented with respect to the audience. The screen includes multiple layers of white fabric that are superimposed and joined together such that the screen provides a surface that is both transparent to sound and sufficiently opaque to view a projected image.

Abstract: A mounting assembly including a housing for a roller operated system, such as a projection screen system, which facilitates installation in a building in stages to reduce the risk of damage to system components. The housing includes longitudinally extending lipped projections along its top wall. Attachment lugs of brackets that support the roller on which a sheet, such as a projection screen, is windable are adapted to engage the lipped projections and enable the brackets to be mounted to the housing at selected longitudinal locations to allow for positioning adjustments of the roller. The vertical side walls of the housing also are each constructed with a projecting lip adapted to engage an upstanding hook of the bottom closure panel to thereby enable the closure panel to be mounted to either of the side walls of the housing. A method of installing a roller operated system is also disclosed.

Abstract: To provide a sheet take-up device for a projection screen and the like, said device being capable of simplifying the device in structure by omitting a one-way clutch and reducing components in number and capable of smoothly drawing out and taking up a sheet.

Abstract: A colapsible rear projectrion screen assembly for a portable visual display device. Embodiments are presented that include a flexible screen supported by a surrounding rigid screen that collapses by a ssimple folding movement for easy transport while also removing any risk of opticql or physical damage to the screen member material in the collapsing process.

Abstract: A reduced size personal computer comprises a base having first and second base portions movably connected to one another. In the preferred embodiment the two base portions are hingedly connected and fold together much like a book. In the extended orientation, the first and second base portions both lie flat on a working surface, such as a tabletop. The first portion typically includes a keypad and a mouse region, and the second portion typically includes internal operating components such as a motherboard and disk drives. A retractable display screen is extended upwardly from a storage compartment in the second base portion to its full, extended height. The screen may be flexible and manufactured with a light-directing texture. Due to the retractable nature of the display screen, the portable computer disclosed herein has a footprint in a stowed orientation that is smaller than the extended size of the screen.

Abstract: A projection screen system is provided that is configured to mount to a structure. The projection screen system includes a housing, a roller, a screen, and a motor positioned to rotate the roller to raise and lower the screen. The projection screen system further includes a coupling configured to couple the motor to the electrical supply of the structure.

Abstract: To provide a sheet take-up device for a projection screen and the like, said device being capable of simplifying the device in structure by omitting a one-way clutch and reducing components in number and capable of smoothly drawing out and taking up a sheet.

Abstract: A projection screen for displaying projected images with a movable shutter that can be positioned and opened at any location within a large rectangular area of the surface of the projection screen. Physical objects and light signals may pass through the open shutter. When the shutter is closed, the projection screen appears to a viewer as a continuous, unbroken, vertical reflective surface.

Abstract: A portable screen assembly includes a spring-biased roll rotatably mounted to a lower casing, and a screen rotatably mounted at one end thereof to a top bar. The screen is set to a desired height by adjusting a repulsive force for a descent of the screen, and an upward biasing force of a height retaining device engaged with an expansion device against gravity and an elastic force of a spring attached to the spring-biased roll.

Abstract: A portable screen assembly includes first and second frames extending parallel to each other, a spring-biased roll rotatably mounted in the first frame, and a screen bonded at its one end to the second frame and wound around the spring-biased roll. An extender is provided for biasing the first and second frames away from each other to impart a predetermined tension to the screen. During use of the portable screen assembly, the first and second frames are supported generally verically by a purality of support legs.

Abstract: A video projection screen assembly for the viewing of images projected thereon and designed to be selectively disposed between an exposed, expanded position for viewing and a collapsed position for storage. A viewing screen is mounted on and supported by a support frame structured to dispose and maintain the viewing screen in the vertical, expanded position for viewing wherein the support frame includes a positioning assembly including one or more spring biased sets of arms wherein each arm set includes a gas spring mounted thereon and cooperatively structured to provide sufficient driving force for disposition of the viewing screen into the vertically oriented, expanded position for viewing when released from its collapsed position. The viewing screen is formed from a relatively heavy, durable, material having sufficient flexibility to be rolled upon itself or otherwise disposed in a collapsed position for storage of the screen and the support frame in an out-of-sight location.

Abstract: A projection screen system that may be installed in a building in stages to reduce the risk of damage to the projection screen. The system includes a housing in which is mounted a socket circuitable with a power supply of the building. An assembly of the system that may be attached to the housing at a later stage of building construction includes a motor with a power cord, a roller and a projection screen. The motor rotates the roller to unwind the projection screen from around the roller and thereby lower the projection screen. A first end of the power cord is circuited to the motor, and a second end of the power conduit includes a plug that mates with the socket to operatively circuit the motor to the building's power supply. The housing also includes longitudinally extending lipped projections along its top wall.