Matches 51 - 100 out of 138 < 1 2 3 >
Match Document Document Title
5638208 Projection screen with retro-reflective calibration points, placement tool and method  
In a multiple-projector concave-screen display system, spacial alignment of images on the screen, is enabled by designating calibration points with retro-reflective dots and illumination markers....
5625489 Projection screen for large screen pictorial display  
A front projection screen for pictorially displaying upon a front face of the screen an image projected onto the front face from a projector comprises a backing member having a front reflective...
5541769 Uniform-brightness, high-gain display structures and methods  
A uniform-brightness, high-gain projection screen is especially suited for reflecting radiation from a projector to a viewer who is spaced from the projector along a projection axis. The screen is...
5500747 Ultra-wide angle liquid crystal projector system  
An ultra-wide angle liquid crystal projector system comprising a light source, a liquid crystal panel, a curved screen, and a projection lens for projecting in accordance with light emitted by the...
5457508 Display devices  
A display device includes a projector and a translucent hemispherical screen disposed in a black box, with the axis of the hemisphere extending perpendicular to a surface on which an image from the...
5437756 Method of making a composite sphere for a motion base simulator with a low center of gravity  
A simulator dome for a motion base simulator comprises one or more fiber reinforced outer layers, inner layers of a similar material and an intermediate core. The intermediate core is preferably a...
5414558 Screen for a projector  
A screen is used for a projector and includes a metal plate body and a plurality of elongated parallel streaks. The metal plate body has a concave reflection surface which is horizontally straight...
5402263 Rear projector having an angled screen mounting frame  
A rear projector for projecting an image onto a display screen mounted on a frame. The frame includes first and second pairs of oppositely disposed mounting members having surfaces adapted to...
5400178 Screen unit for rear projection picture display system, method for producing the same and component to be used for assembling the screen unit  
A rear projection screen unit in a large-size picture display system, composed by combining a plurality of rear projection screen panels arranged in a lattice square with at least one ordinate and...
5376980 Segmented torus screen  
The present invention is a projection system. The projection system comprises a plurality of screen segments, each defining a surface in the shape of a toroidal segment having geometric proportions...
5179399 Theatre in the round projection apparatus and method  
A projection system for a theatre in the round having a plurality of moving image projectors. The projectors can be either film projectors or television-type projectors. They project in an...
5175575 Segmented ellipsoidal projection system  
The present invention is a projection system which includes a plurality of screen segments, each defining a surface in the shape of an ellipsoidal segment such that each surface has a first focal...
5137348 Collimated projection system with wide horizontal field, with device to increase the vertical field  
In a simulator for helicopters, the images seen are displayed through the bottom windows by means of a system collimated to infinity, including, for each side of the cockpit, a projector (15, 16),...
5130846 Screen panel fastener  
A dome-shaped motion picture projection screen is constructed from an external supporting frame and a plurality of panels that are clipped to the frame by a series of individual fasteners that are...
5011263 Perforate projection screen  
A perforate projection screeen for movies, planetariums and the like having uniform reflectivity throughout its visible surface. The screen is made from a plurality of perforate panels and is...
5011277 Multi-screen projector  
Unit projectors whose number is n×m are arranged in n rows and m columns like a matrix. Unit screens whose number is n×m are arranged so that they as a whole form an enormous transmissive screen....
4991955 Circular projection and display system using segmented trapezoidal screens  
A circular projection system using segmented trapezoidal screens arranged in a continuous arcuate array about a central vertical axis. The top of each screen is tilted downward. Each screen is...
4802734 Cold static balloons  
A cold air inflatable screen which can be inflated with a suitable air source and has sidewalls and a backwall and top and bottom and a front screen of white material. The screen is inflated and is...
4750808 Projection screen  
A projection screen including a rectangular film having a back surface, a front surface and a periphery, a support frame and chamber connected to the periphery of the film for defining the shape of...
4750807 Curved screen, particularly motion-picture projection screen  
The invention relates to a curved screen, particularly a motion-picture projection screen. It comprises a bearing geodesic structure, a reticulated secondary frame fastened to the hubs of the...
4732441 Oriented-reflection reflective mirror screen  
A reflective mirror screen for reflecting light projected from a CRT through a convex lens or from other projectors to only a specific observing area comprising a plurality of strips with parabolic...
4729631 Rear projection screen  
Provided is a rear projection screen apparatus having a rear projection screen, light rays from a projecter being incident upon the rear surface of the rear projection screen at steep angles,...
4708435 Rear projection screen  
A rear projection screen is provided for observing an image by introducing light from the rear side of the screen at a sharp angle. The screen has a plane of incidence which comprises a plurality...
4642945 Entertainment structure  
An entertainment structure principally intended to comprise a cinematic auditorium. The structure has a horizontally disposed floor or decking support plate on which seating for members of an...
4641918 Portable panoramic theatre  
A free-standing collapsible panoramic theatre is described. When assembled, the theatre includes a multiplicity of vertical screens arranged in a polygonal arrangement that defines an internal...
4597633 Image reception system  
An image reception system is provided with an inflatable viewing surface. A video projection system is arranged within the volume defining the viewing surface to form images on interior concave...
4537474 Optical system for projection  
An optical system for projection with a projector apparatus intended to project an image on a screen made with negative curvature includes a single, generally concavo-convex lens, both surfaces of...
4500163 Holographic projection screen  
A projection screen is formed as at least one reflective holograms each of which, when referenced with a projector, reconstructs a defined observation pupil.
4498734 Means and method of controlling reflected image containment  
A means and method primarily for the control of a projected image reflected from an optical screen, such as the screen of an outdoor or drive-in theater, whereby the contour of the optical screen...
4478902 Screen for projection television  
A screen for projection television set comprising a foamed support and a reflective film adhered to the concave side of the support, said support having the outer layers with a high density such as...
4473355 Visual simulator and display screen for said simulator  
A visual simulator has a display screen forming a vault. Back-projectors arranged outside of the screen vault which is transparent to project the image, such as an environment image into the vault...
4364635 Slide-screen for back projection  
A slide-screen for back projection has a standing and/or suspended frame (1) and a projection surface arranged within it. The projection surface is made double-skinned and consists of a plastics or...
4354737 Variable gain screen permitting off-axis viewing with image brightness remaining constant  
The invention is a variable gain non-Lambertian screen surface (12) for employment in a visual display system. The screen surface provides constant image brightness, independent of changes in...
4339175 Projection screen  
A projection screen is formed of a rectangular, tubular, annular frame of flexible material, a projection sheet of flexible material covering one side of the frame and a foil of flexible material...
4318589 Segmented curved screen construction for preserving a predefined curvature  
A segmented curved screen (10) for preserving a predefined curvature of the screen surface for an image projection system. A screen segment (12) having a curved surface (14) with a lip having a...
4277136 Reflector construction  
A reflector construction is disclosed. A semi-rigid reflector having a curved configuration includes a front reflecting surface and an opposite back surface. A semi-rigid backing has a peripheral...
4181404 Microfiche reader projection screen  
A microfiche reader according to the present invention includes a housing consisting of a hood portion and a base portion, a screen located within the hood portion and visible through the front end...
4167311 Projection system and process  
A projector casts light rays upon a reflective surface to produce a focused scene, and within the periphery of the scene the reflective surface has a small aperture. Behind the aperture is a...
4089587 Projection screen surface and method of forming said surface  
The present invention provides an improved projection screen. The screen includes a film which is constructed of at least partially deformable, resilient material. One surface of the film has in...
4057323 Projection screen  
Large projection screens, of which planetarium domes are typical, may conveniently be made up of a plural of prefinished panels, at least one edge of at least some of which panels overlaps another...
4022522 Projection screen  
A tailored membrane supported solely by a peripheral frame forms the front panel of a chamber. A source of vacuum or an air blower maintains a pressure in the chamber which differs from that of the...
RE29091 Radiation-redistributive devices  
Devices for redistributing incident radiation in a prescribed manner. Such devices comprise a multitude of contiguous optical microelements, each of such microelements being contoured and oriented...
3998522 Screen for exhibiting projected images  
This disclosure teaches a screen such as those generally used for exhibiting projected images. A boxlike frame has a rim formed about its front. A membrane (the projection screen) covers the front...
3992841 Panel construction and projection screen constructed from such panels  
Large projection screens, of which planetarium domes are typical, may conveniently be made up of a plural of prefinished panels, at least one edge of at least some of which panels overlaps another...
3851950 PROJECTION SCREEN  
A front projection screen formed of an aluminum member having a reflecting surface which is etched and anodized to provide random non-directional surface irregularities thereon. The reflecting...
3792914 APPARATUS FOR THE PRODUCTION OF A WIDE-ANGLE IMAGE  
An apparatus for the reproduction of a wide-angle image onto a number of screens has a central opaque concave-convex screen with the convex side facing the projector for receiving a reversed image....
3784742 GROUND-BASED FLIGHT SIMULATING APPARATUS  
An infinity visual display for a ground-based vehicle or craft simulator. A view of terrain passed over is obtained by a television camera controlled in simulated motion over a terrain model. The...
3754813 RADIATION-REDISTRIBUTIVE DEVICES  
Devices for redistributing incident radiation in a prescribed manner. Such devices comprise a multitude of contiguous optical microelements, each of such microelements being contoured and oriented...
3754811 PROJECTION SCREEN  
A highly efficient projection screen of improved aesthetic quality. The screen comprises a plurality of contiguous grooves, each groove having a depth which undulates at a random spatial frequency...
3741638 VISUAL SIMULATION  
The shadowgraph visual simulation system, for a land vehicle simulator, includes a three-dimensional model of terrain; and a light source mounted at a fixed height within the boundaries of the...
Matches 51 - 100 out of 138 < 1 2 3 >