System and Method for Correcting Astigmatism Caused by an Aircraft Canopy
First Claim
1. A method for correcting astigmatism caused by an aircraft canopy, comprising:
- determining which one of a plurality of viewing angles through an aircraft canopy corresponds to an optical path of an imaging system configured to be articulated within a cockpit of the aircraft;
accessing data representing an astigmatic power sufficient to substantially compensate for astigmatism associated with the determined one of the plurality of viewing angles through the aircraft canopy, the astigmatism caused by refraction of light by the aircraft canopy; and
providing the astigmatic power to the optical path of the imaging system, the provided astigmatic power substantially correcting the astigmatism caused by the aircraft canopy.
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Accused Products
Abstract
In a method embodiment, a method for correcting astigmatism caused by an aircraft canopy comprises receiving at a compensator module a plurality of light rays that have been refracted by an aircraft canopy. At least two of the refracted light rays have respective foci different from one another and propagate in respective planes that are substantially perpendicular to one another, such that astigmatism occurs. The method further includes using the compensator module to substantially compensate for the astigmatism by providing astigmatic power to the received plurality of light rays. The method also includes providing the plurality of light rays having the astigmatic power compensation to an imaging module. The imaging module is configured to generate imagery using the plurality of light rays having the astigmatic power compensation.
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Citations
20 Claims
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1. A method for correcting astigmatism caused by an aircraft canopy, comprising:
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determining which one of a plurality of viewing angles through an aircraft canopy corresponds to an optical path of an imaging system configured to be articulated within a cockpit of the aircraft; accessing data representing an astigmatic power sufficient to substantially compensate for astigmatism associated with the determined one of the plurality of viewing angles through the aircraft canopy, the astigmatism caused by refraction of light by the aircraft canopy; and providing the astigmatic power to the optical path of the imaging system, the provided astigmatic power substantially correcting the astigmatism caused by the aircraft canopy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for correcting astigmatism caused by an aircraft canopy, comprising:
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receiving at a compensator module a plurality of light rays that have been refracted by an aircraft canopy, at least two of the refracted light rays having respective foci different from one another and propagating in respective planes that are substantially perpendicular to one another, such that astigmatism occurs; using the compensator module, substantially compensating for the astigmatism by providing astigmatic power to the received plurality of light rays; and providing the plurality of light rays having the astigmatic power compensation to an imaging module configured to generate imagery using the plurality of light rays having the astigmatic power compensation. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A system for correcting astigmatism caused by an aircraft canopy, comprising:
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a compensator module comprising at least one rotatable lens element, the compensator module configured to; determine which one of a plurality of viewing angles through an aircraft canopy corresponds to an optical path of an imaging system; access data representing an astigmatic power sufficient to substantially compensate for astigmatism associated with the determined one of the plurality of viewing angles through the aircraft canopy, the astigmatism caused by refraction of light by the aircraft canopy; and provide the astigmatic power to the optical path of the imaging system using the plurality of rotatable lens elements, the provided astigmatic power substantially correcting the astigmatism caused by the aircraft canopy. - View Dependent Claims (20)
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Specification