Thales

Philippe Augereau

Johanna Dominici

Philippe Coni

Johanna Lux

Sebastien Ellero

Sébastien Ellero

The general field of the invention is that of heads-up display systems comprising at least one display and one optical guide comprising a first image guide comprising a plurality of first internal semi-reflecting plates, inclined with respect to a first plane. The heads-up display system according to the invention comprises: The display system can comprise a second image guide perpendicular to the first.

Heads-up display comprising an optical mixer with controllable pupil expansion

The general field of the invention is that of optical guides for collimated images comprising a first and a second image conductor functioning by total reflection, each conductor comprising a plurality of plates that are planar, semi-reflective, mutually parallel and inclined with respect to the plane of the external faces of the image conductors. The two conductors are arranged so as to deliver a collimated image to a large pupil. The optical guide according to the invention comprises an optical beam doubler element having substantially the shape of a rectangular parallelepiped. In its basic version, it comprises four external planar facets, two internal semi-reflective planar mirrors, said mirrors being mutually perpendicular, a planar entrance face intended to receive a collimated image, and an exit face adhesively bonded to the injection section of one of the image conductors. The invention also relates to the whole of the display device associated with this optical guide.

Optical guide for collimated images with optical beam doubler, and associated optical device

The general technical field of the invention is that of viewing devices mounted on vehicles and comprising a display whose image is reflected by the windscreen of the vehicle, making it possible to superimpose the displayed image on the outside world. One of the major problems with this type of display is that the windscreen gives, by reflection, two non-superimposed doubled images. The basic principle of the invention is that the initial image is such that the combination of the first reflected image and the second image reflected by the windscreen gives a 'clean' or 'ideal' perceived image without any offsets. To perform this function, an image is generated on the display that comprises, obviously, the &#x201c;ideal&#x201d; image, but also a succession of offset images comprising negatives of the &#x201c;ideal&#x201d; image so that the resultant sum of the first reflected image and of the second reflected image includes no more than the &#x201c;ideal&#x201d; image. Obviously, the principle of the invention can be applied to simple displays or to displays comprising an image collimated to infinity or to a great distance.

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Cestas, France

Philippe Augereau