| Patent Number |
Title Of Patent |
Date Issued |
| 5822126 |
Helmet with night-vision device providing optimized safety and ergonomy |
October 13, 1998 |
| The invention relates to a pilot's helmet with a tinted visor that can be locked in raised position during nighttime use by a device using spring-loaded balls, and that can be lowered manually, or automatically when the pilot ejects thanks to a spring-loaded system tending to close t |
| 5748346 |
Device for stowing away a holographic mirror, notably for aircraft |
May 5, 1998 |
| A device for putting away a holographic mirror includes at least one curved slideway, a carriage for moving on the slideway from an operational position to a position where the mirror is put away, the carriage being fixedly joined to the mirror, and a holder holding the mirror in a p |
| 5453877 |
Optical system of collimation notably for helmet display unit |
September 26, 1995 |
| The system is designed to be mounted in a air pilot's helmet. It uses a confocal assembly with a first parabolic mirror and a second parabolic mirror, placed downline of a collimation objective which gives a collimated radiation. The first mirror is totally reflective and the second |
| 5453854 |
Device to check the position and orientation of a mirror |
September 26, 1995 |
| To servocontrol the direction and the position of a collimation mirror of a head-up visor, holographic elements are used. These holographic elements deflect a part of the light reflected by the mirror towards sensors located outside the field of view. |
| 5260829 |
Optical mixer without disturbance of optical paths, notably for helmet visual display system |
November 9, 1993 |
| The disclosed mixer comprises a rotating optical block with a symmetry of revolution. This block is axially sectioned into two, and one face of one of the half blocks has a semi-reflective coating. This block cooperates with a source, the images of which have to be always transmitted and |
| 5243450 |
Optical mixer for helmet visual display system |
September 7, 1993 |
| An optical mixer for use in a helmet visual display system including a light intensifier tube for night vision and a cathode-ray tube for the display of a synthetic image. The mixer includes a swinging glass plate with a spectrally reflective and angularly selective coating. When the |
| 5172222 |
High definition color display device |
December 15, 1992 |
| The device finds application, particularly, in the instrument panels of aircraft, where it comprises: three liquid crystal optical valves, controlled by three electrical signals respectively representing a red image, a green image and a blue image. Two holographic mirrors are utilize |
| 5050962 |
Display device for ergonomic sights with a large field of observation |
September 24, 1991 |
| A display device for an ergonomic helmet-mounted sight with a large field of observation, including a collimation and combination optical unit joined to an image generator located on the same side as an observation point relative to the optical unit. The optical unit includes a holog |
| 4697879 |
Airborne system for display of collimated images |
October 6, 1987 |
| An airborne display system is provided for viewing a high-definition collimated video image or a high-resolution collimated synthetic image or a combination of both images in superimposed relation by means of head-down display devices mounted on an aircraft instrument panel. The disp |
| 4600271 |
Head-up display |
July 15, 1986 |
| Display adapted to the local configuration, so that it does not cause a mask during observation. It comprises an entirely transparent optical module grouping a spherical mirror, which is preferably a partly transparent diffractive optics used on the axis, and a partly transparent fla |
