Accession Number : ADD001646

Title :   Rear-Screen Wide-Angle On-Axis Projection System.

Descriptive Note : Patent,


Personal Author(s) : Herndon,John W

Report Date : 22 Jul 1975

Pagination or Media Count : 6

Abstract : The patent discloses a reflector means shaped to collect the image light rays from a projector, which could be a television, motion picture or still film, and reflect the rays to a rear-screen projection display means. The configuration of the rear-screen projection display means is in a form, as for example a conical section, such that the reflected rays from the above mentioned reflector means form the image on the rear (outer) surface of the display screen and that the image can be viewed from the center of the curved section. It is further contemplated according to the invention that the relative curvature of the reflector and screen means be selected in relation to the viewer's point such that the viewer's optical paths to the display means are coincident with points on the display means corresponding with the proper azimuth and elevational angles represented by the image. The invention is in the field of optics and is particularly useful in the field of visual aid training simulators.

Descriptors :   *Display systems, *Training devices, *Patents, Optical equipment, Television display systems, Image projectors, Simulators, Visual aids, Wide angles

Subject Categories : Humanities and History

Distribution Statement : APPROVED FOR PUBLIC RELEASE