1
Menn Anatoly, Krimerman Joseph: System for measuring the angular displacement of an object.. Electro Optics, December 7, 1988: EP0294101-A2 (100 worldwide citation)

An improved helmet line of sight measuring system for determining the spatial location of a helmet (1) and the line of sight of an observer wearing the helmet (8), both relative to a coordinate reference frame. A plurality of assemblies (2) of light sources are distributed on the helmet (8) each com ...


2
McAdam Jr William E: Advanced fire control system. Hughes Aircraft Company, April 13, 1971: US3575085 (66 worldwide citation)

A fire control system for vehicle or tank control that provides a high first hit probability. The system is highly stable because of a sampling concept and is highly accurate because of the handling of nonstandard conditions. Reliable operation is provided for a moving tank or target, or both, and f ...


3
Edwards William R: Optical sight with electronic image stabilization. The United States of America represented by the Secretary of the Navy, July 20, 1971: US3594556 (54 worldwide citation)

This invention is directed to an electrically augmented sight particularly dapted for use in aerial reconnaissance. The sight locates and fixes the position of an object viewed from the air. A wide-angle optical viewer is used to locate and hold the object in sight. An electron image motion-stabiliz ...


4
Staveley Christopher Barry: Helmet systems.. Marconi Gec, January 16, 1991: EP0408344-A2 (53 worldwide citation)

There is disclosed two helmet systems, each comprising a helmet (11) and, carried by the helmet (11), an optical arrangement (13). In each system, the optical arrangement (13) both provides a collimated display superimposed on the helmet wearer's view of the forward scene through an eyeplece (15 or ...


5
Crane Hewitt D, Cornsweet Tom N: Two dimensional eye tracker and method for tracking an eye. Stanford Research Institute, Flehr Paul D, April 16, 1974: US3804496 (38 worldwide citation)

An eye tracker for continuously tracking orientation of the optic axis of an eye in which the eye is flooded with light so that Purkinje images are formed. Two of the Purkinje images are deflected so as to incident on photodetectors. The eye tracker includes optic means for forming an image of the e ...


6
Reymond Jean Claude: Appareil oculometre et son utilisation dans un systeme viseur de tete. Thomson-CSF, September 9, 1983: FR2522804-A1 (32 worldwide citation)

APPAREIL PERMETTANT DE MESURER AVEC PRECISION LA DIRECTION DE VISEE REELLE DE L'OBSERVATEUR ET DE S'AFFRANCHIR DANS LE DOMAINE DES VISEURS DITS DE TETE OU DE CASQUE, DE L'UTILISATION D'UN DISPOSITIF COLLIMATEUR.


7
Chaplin Richard W, Holscher Donald J, Wasney Jr Albert, Wheeler Bryce A: Night vision system. Hughes Aircraft Company, February 8, 1972: US3641261 (32 worldwide citation)

Night-viewing apparatus for installation on a helicopter comprising two camera heads mounted on the front of the helicopter, and a pair of pivotally mounted mirrors or prisms for each camera head to enable it to view any portion of the terrain within a wide range of look-angles. One camera head incl ...


8
Stoutmeyer Ronald G, Alltop William O: Advanced helmet tracker using lateral photodetection and light-emitting diodes. The United States of America represented by the Secretary of the Navy, Sciascia R S, Miller Roy, Adams Robert W, November 4, 1975: US3917412 (25 worldwide citation)

A means for sensing the pilot's line-of-sight in an aircraft, including two ight detectors mounted on the cockpit frame and two light emitters mounted on the pilot's helmet. Each detector senses light from each emitter and the line-of-sight is determined from the intersection of the thus defined pla ...


9
LaBaw Kenneth B: Radiation sensitive optical tracker. The United States of America represented by the Secretary of the Navy, July 18, 1972: US3678283 (25 worldwide citation)

An optical tracker system for determining the sight-line of a pilot within cockpit. The system has at least two light sources and one photodetector mounted in the cockpit, and one light source and one photodetector mounted on the pilot's helmet. Electrical signals from the photodetectors uniquely es ...


10
Margolis Maier: System for compensating line-of-sight from stabilized platform against misdirection caused by lateral linear accelerations. Hughes Aircraft Company, MacAllister W H, Dicke Jr Allen A, August 13, 1974: US3829659 (21 worldwide citation)

Linear acceleration is detected on a stabilized platform in the platform coordinates by means of accelerometers mounted on the platform. A directable device such as a sight is also mounted on the platform. The sight is directable so that its line-of-sight tracks a target. The acceleration signals ar ...