Thomson-csf

Etablissements Pierre Angenieux

Jean-Paul Lepeytre

Andre A Masson

Francis Jourdan

Francois H Gauthier

Charles Le Roux

A helmet-mounted system for display of complex video images projected to infinity with a miniature cathode-ray tube, an optical device for transferring the image from the tube to the focal surface of a spherical mirror, and a semi-reflecting plane mirror in the form of a thin film. The image projected to infinity by the spherical mirror which is utilized on the axis is reflected from the plane mirror while enabling the viewer to see his normal surroundings at the same time. The collimating unit is advantageously constituted by two juxtaposed and cemented prisms.

Helmet-mounted display system

An optical device comprising at least an optical element having a cut away area and which supports an inner mechanical structure accommodated in the cut away area, the whole being supported by an outer mechanical structure without obstruction in the optical path between the structures. The contact areas of the optical element with the structures comprise mechanical gripping and position means including deformable members for holding an unvaried centered position to the optical element for severe temperature and mechanical operating conditions.

Growing community of inventors

Paris, France

Jean-Paul Lepeytre