Helmet-mounted optical systems
First Claim
1. An optical system mounted on a helmet for superimposing a collimated image of a display object on an external view of the helmet'"'"'s wearer, said system comprising:
- display object means mounted on the helmet for generating a display;
a collimator having the function of a concave mirror for collimating light from said display;
an optical relay unit located in the forehead region of said helmet for generating an intermediate image of said display in the focal plane of the collimator;
a reflecting surface for reflecting display light from the relay unit towards the collimator; and
an inclined combiner, essentially transparent to incoming display light and to the wearer'"'"'s external view, for reflecting display light reflected from the collimator towards the viewer'"'"'s eye, the collimator being located outside the wearer'"'"'s external view through the combiner and being located on the opposite side of said external view with respect to the optical relay unit said system including two substantially identical but relatively reversed systems, one for each eye, and employing a common, planar, diffractive combiner.
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Accused Products
Abstract
An optical system mounted on a helmet (29) for superimposing a collimated image of a display object on the external view of the helmet'"'"'s wearer comprising: display object means (1a, 1b) mounted on the helmet for generating a display; a concave collimator (6a, 6b) for collimating light from said display; an optical relay unit (3a, 3b) located in the forehead region for generating an intermediate image of said display in the focal plane of the collimator; a reflecting surface (4a, 4b) for reflecting display light from the relay unit towards the collimator; and an inclined combiner (5) essentially transparent to incoming display light and to the wearer'"'"'s external view, for reflecting display light reflected from the collimator towards the viewer'"'"'s eye.
88 Citations
20 Claims
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1. An optical system mounted on a helmet for superimposing a collimated image of a display object on an external view of the helmet'"'"'s wearer, said system comprising:
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display object means mounted on the helmet for generating a display; a collimator having the function of a concave mirror for collimating light from said display; an optical relay unit located in the forehead region of said helmet for generating an intermediate image of said display in the focal plane of the collimator; a reflecting surface for reflecting display light from the relay unit towards the collimator; and an inclined combiner, essentially transparent to incoming display light and to the wearer'"'"'s external view, for reflecting display light reflected from the collimator towards the viewer'"'"'s eye, the collimator being located outside the wearer'"'"'s external view through the combiner and being located on the opposite side of said external view with respect to the optical relay unit said system including two substantially identical but relatively reversed systems, one for each eye, and employing a common, planar, diffractive combiner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An optical system mounted on a helmet for superimposing a collimated image of a display object on an external view of the helmet'"'"'s wearer, each system comprising:
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display object, mounted on the helmet, providing a light image; a collimator having the function of a concave mirror for collimating light from said display; an optical relay unit, located in the forehead region of said helmet, for generating an intermediate image of said display in the focal plane of the collimator; a reflecting surface for reflecting display light from the relay unit towards the collimator; and an inclined combiner, essentially transparent to incoming display light and to the wearer'"'"'s external view, for reflecting display light reflected from the collimator towards the wearer'"'"'s eye, the collimator being located outside the wearer'"'"'s external view through the combiner and being located on the opposite side of said external view with respect to the optical relay unit, said system including two substantially identical but relatively reversed systems, one for each eye, and employing a common, planar, diffractive combiner.
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11. An optical system mounted on a helmet for superimposing a collimated image of a display object on an external view of the helmet'"'"'s wearer, said system comprising:
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display object means mounted on the helmet for generating a display; a collimator having the function of a concave mirror for collimating light from said display; and an inclined combiner, essentially transparent to incoming display light and to the wearer'"'"'s external view, for reflecting display light reflected from the collimator towards the wearer'"'"'s eye, the collimator being located outside the wearer'"'"'s external view through the combiner, said system including two substantially identical but relatively reversed systems, one for each eye, and employing a common, planar, diffractive combiner. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. An optical system mounted on a helmet for superimposing a collimated image of a display object on an external view of the helmet'"'"'s wearer, each system comprising:
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display object, mounted on the helmet, providing a light image; a collimator having the function of a concave mirror for collimating light from said display; and an inclined combiner, essentially transparent to incoming display light and to the wearer'"'"'s external view, for reflecting display light reflected from the collimator towards the wearer'"'"'s eye, the collimator being located outside the wearer'"'"'s external view through the combiner, said system including two substantially identical but relatively reversed systems, one for each eye, and employing a common, planar, diffractive combiner.
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Specification