Head-up display
First Claim
1. A head-up display which does not limit an observer'"'"'s field of vision for use in a carrier vehicle comprising:
- optical collimation and combination means for displaying display data superimposed on a landscape to an observer;
electronic means for producing said display data to be displayed; and
casing means for supporting said optical means and said electronic means and for attaching to the carrier vehicle;
said optical means including a spherical mirror and a flat mirror which are partly transparent, said mirrors having lower edges which are juxtaposed, and upper edges spaced from one another, the display being mounted in the head-up position;
a bonded thin transparent plate for assembling said juxtaposed lower edges to one another;
connecting means for mechanically connecting said upper edges to said casing means, said connecting means being of a limited thickness to be substantially contained in a plane passing through said upper edges and an optical axis of said optical means at an observation point corresponding to an optical centre of the spherical mirror, said spherical mirror being used on the optical axis, wherein a light ray reflected by said flat mirror toward said spherical mirror is again reflected by said spherical mirror in substantially a same axis as said first reflected light ray, but in an opposite directionwhereby there is no masking effect in the observation field located below said connecting part which connects said upper edges, thereby eliminating any masking effect below the upper edges of said mirrors,said electronic means being at least partly contained in said casing means whose shape is predetermined so that it is located in a space already masked for the observation of the landscape from said optical centre by the presence of an opaque part belonging to the carrier vehicle.
1 Assignment
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Accused Products
Abstract
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 flat mirror inclined with respect to the axis. The mirrors are joined at the bottom by a bonded plate and assembled at the top by a thin part, whose faces pass through the centre of the spherical mirror. The electronic part is essentially located in a case, whose shape is such that it is located in the natural mask of a pillar of the cockpit. The display is also used for helmet displays.
60 Citations
12 Claims
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1. A head-up display which does not limit an observer'"'"'s field of vision for use in a carrier vehicle comprising:
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optical collimation and combination means for displaying display data superimposed on a landscape to an observer; electronic means for producing said display data to be displayed; and casing means for supporting said optical means and said electronic means and for attaching to the carrier vehicle; said optical means including a spherical mirror and a flat mirror which are partly transparent, said mirrors having lower edges which are juxtaposed, and upper edges spaced from one another, the display being mounted in the head-up position; a bonded thin transparent plate for assembling said juxtaposed lower edges to one another; connecting means for mechanically connecting said upper edges to said casing means, said connecting means being of a limited thickness to be substantially contained in a plane passing through said upper edges and an optical axis of said optical means at an observation point corresponding to an optical centre of the spherical mirror, said spherical mirror being used on the optical axis, wherein a light ray reflected by said flat mirror toward said spherical mirror is again reflected by said spherical mirror in substantially a same axis as said first reflected light ray, but in an opposite direction whereby there is no masking effect in the observation field located below said connecting part which connects said upper edges, thereby eliminating any masking effect below the upper edges of said mirrors, said electronic means being at least partly contained in said casing means whose shape is predetermined so that it is located in a space already masked for the observation of the landscape from said optical centre by the presence of an opaque part belonging to the carrier vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification