Head-up display system
AssigneeElbit Systems Electro-Optics Elop Ltd.
InventorYoel Blumenfeld
Life of this patent
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Abstract
A head-up display system includes a display device for generating and displaying information to an eye of an observer; a tilted power combiner for superimposing the information displayed by the display device onto the forward view of the outside by the eye of the observer; and a relay optic assembly between the display device and the tilted power combiner for forming an intermediate image of the displayed information forwardly of the combiner that reflects the image towards the eye of the observer within an eye motion box to produce a large field of view for the observer. The relay optic assembly is void of holographic elements and includes a spherical mirror generating aberrations in the intermediate image tending to compensate for aberrations produced by the tilted power combiner.
Claims20
A head-up display system, comprising:
- a display device for generating and displaying information to an eye of an observer;
- a tilted power combiner for superimposing the information displayed by the display device onto the forward view of the outside by the eye of the observer, said tilted power combiner being devoid of holographic elements;
- and
- a relay optic assembly between the display device and the tilted power combiner for forming an intermediate image of the displayed information forwardly of the combiner that reflects the image towards the eye of the observer within an eye motion box to produce a large field of view for the observer;
- said relay optic assembly including:
- (i) a non-refracting spherical mirror generating aberrations in said intermediate image tending to compensate for aberrations produced by the tilted power combiner;
- and
- (ii) a non-refracting flat mirror spaced from said spherical mirror such as to receive reflections directly therefrom, wherein said flat mirror is spaced from said spherical mirror only by an air gap.
A head-up display system, comprising:
- a display device for generating and displaying information to an eye of an observer;
- a tilted power combiner for superimposing the information displayed by the display device into the forward view of the outside by the eye of the observer;
- and a relay optic assembly between the display device and the tilted power combiner for forming an intermediate image of the displayed information forwardly of the combiner that reflects the image towards the eye of the observer within an eye motion box to produce a large field of view for the observer;
- said tilted power combiner including a front surface of a first curvature having a first optical axis, and a back surface of a second curvature having a second optical axis at a predetermined angle to the first optical axis, such that the tilted power combiner is of a wedge configuration with said predetermined angle defining the wedge angle of the combiner.
A head-up display system, comprising:
- a display device for generating and displaying information to an observer;
- a tilted power combiner for superimposing the information displayed by the display device into the forward view of the outside by the observer, said tilted power combiner being devoid of holographic elements;
- and
- a relay optic assembly between the display device and the tilted power combiner for forming an intermediate image of the displayed information forwardly of the combiner that reflects the image towards the eye of the observer within an eye motion box to produce a large field of view for the observer;
- whereas said tilted power combiner has a front surface, a back surface, and a dichroic coating on said front surface;
- and
- wherein said relay optic assembly includes:
- (i) a non-refracting spherical mirror generating aberrations in said intermediate image tending to compensate for aberrations produced by the tilted power combiner;
- and
- (ii) a flat mirror spaced from said non-refracting spherical mirror such as to receive reflections directly therefrom, wherein said flat mirror is spaced from said spherical mirror only by an air gap.
A head-up display system, comprising:
- a display device for generating and displaying information to an eye of an observer;
- a tilted power combiner for superimposing the information displayed by the display device onto the forward view of the outside by the eye of the observer, said tilted power combiner being devoid of holographic elements;
- and
- a relay optic assembly between the display device and the tilted power combiner for forming an intermediate image of the displayed information forwardly of the combiner that reflects the image towards the eye of the observer within an eye motion box to produce a large field of view for the observer;
- said relay optic assembly including:
- (i) a spherical mirror generating aberrations in said intermediate image tending to compensate for aberrations produced by the tilted power combiner;
- and
- (ii) a flat mirror spaced from said spherical mirror such as to receive reflections therefrom;
- wherein said flat mirror is spaced from said spherical mirror by an air gap and wherein the position of said flat mirror relatively to said spherical mirror is adjustable.
Dependencies are inferred from the claim text.