USA As Represented by Secretary of the Navy

Dorothy M Baldwin

Frank J Oharek

Archer M Spooner

Curt Stahl

A head and eye tracking apparatus utilizes a plurality of coded IR emitte mounted in a reflective surface, as a reference base. A reference lens aligned with the user's head references a limited number of the emitters within its field of view and transmits the image to a fiber optic bundle. Simultaneously, an IR reflection from the user's eye is superimposed on the image and transferred via the fiber optic bundle. A CCD array detects the IR transmission and provides a high speed read-out to a computer which can determine head and eye positions from the geometry of the emitters referenced by the lens.

CCD Head and eye position indicator

A field of view test apparatus utilizes a plurality of interchangeable acic masks to vary the resolution characteristics of a projected field of view. An eye or head tracker provides line of sight direction signals to a servo which positions the mask with the optical path of the projection to correlate the area of higher resolution with the direction of the line of sight.

Field of view test apparatus

An optical transmission system for eliminating picture element information oss during the transmission of a circular image forming light beam through a fiber optics bundle. Included in the optical transmission system is an image source which emits the image forming light beam, a first pair of cylindrical shaped mirrors adapted for amplifying the image forming light beam in a predetermined direction such that it will assume an elliptical configuration, and the fiber optics bundle which transmits the image forming light beam from the first pair of cylindrical shaped mirrors to a second pair of cylindrical shaped mirrors. The second pair of cylindrical shaped mirrors, in turn, reduce the image forming light beam to a circular configuration so as to allow for the broadcasting of the image forming light beam upon a reflective display screen such that a visual image is formed upon the reflective display screen. Breakage of one or more fibers within the fiber optics bundle will not distort the visual image broadcast upon the reflective display screen since the image forming light beam was amplified by the first pair of cylindrical shaped mirrors prior to being transmitted through the fiber optics bundle.

Anamorphic system for redundancy in coherent fiber optic bundle

A rotating shutter system for improving the resolution of a visual scene projected upon a spherical screen by a 360.degree. non-programmed visual display system. A rotating shutter, which has on its upper surface a plurality of opaque radial lines, is positioned within an annular probe of the 360.degree. non-programmed visual display system so as to improve the resolution of the annular probe. A direct current motor drives the rotating shutter at a predetermined rotational speed, and a feedback circuit maintains the rotational speed of the direct current motor at a constant value.

Growing community of inventors

Lake Monroe, FL, United States of America

Dorothy M Baldwin