Method of making a spectacle lens providing an astigmatic correction and spectacles including said spectacle lens
First Claim
1. A method of making a spectacle lens providing at least an astigmatic correction, wherein the method comprises the steps of:
- measuring a direction of an axis of an astigmatism of an eye for each of at least three different directions of gaze of the eye;
individually determining a position of the spectacle lens relative to the eye; and
,computing a shape of a surface of the spectacle lens based on the individually determined position of the spectacle lens relative to the eye and the at least three measured directions of the axis of the astigmatism.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of making a spectacle lens providing at least an astigmatic correction includes measuring a direction of an axis of an astigmatism of an eye for each of three different directions of gaze of the eye. Thereafter, a position of the spectacle lens is determined relative to the eye. A shape of a surface of the spectacle lens is computed based on the determined position of the spectacle lens relative to the eye and the at least three measured directions of the axis of the astigmatism. A primary orientation of the eye is determined based on the three measured directions of the axis of the astigmatism. The shape of the surface of the spectacle lens is calculated based on the determined position of the spectacle lens relative to the eye and by applying Listing'"'"'s Law based on the determined primary orientation of the eye.
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Citations
31 Claims
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1. A method of making a spectacle lens providing at least an astigmatic correction, wherein the method comprises the steps of:
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measuring a direction of an axis of an astigmatism of an eye for each of at least three different directions of gaze of the eye; individually determining a position of the spectacle lens relative to the eye; and
,computing a shape of a surface of the spectacle lens based on the individually determined position of the spectacle lens relative to the eye and the at least three measured directions of the axis of the astigmatism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 19, 20, 29, 30, 31)
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17. Spectacles for a first and a second eye of a wearer, at least the first eye having an astigmatism, the astigmatism defining an axis with a direction measured in at least three different directions of gaze of the first eye, the spectacles comprising:
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a spectacle frame; a first spectacle lens mounted on said spectacle frame so as to correspond to the first eye of the wearer; a second spectacle lens mounted on said spectacle frame so as to correspond to the second eye of the wearer; said first spectacle lens having an individually determined position relative to the first eye; and
,said first spectacle lens defining a surface having a computed shape based on the individually determined position of the first spectacle lens relative to the first eye and the at least three measured directions of the axis of the astigmatism.
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18. A computer readable medium storing information representing a computer program configured to instruct an optical system to perform a method comprising:
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measuring a direction of an axis of an astigmatism of an eye for each of at least three different directions of gaze of the eye; individually determining a position of the spectacle lens relative to the eye; and
,computing a shape of a surface of the spectacle lens based on the individually determined position of the spectacle lens relative to the eye and the at least three measured directions of the axis of the astigmatism.
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21. A method of making a spectacle lens providing at least an astigmatic correction, wherein the method comprises the steps of:
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measuring a direction of an axis of an astigmatism of an eye for each of at least three different directions of gaze of the eye; individually determining a position of the spectacle lens relative to the eye; and
,computing a shape of a surface of the spectacle lens based on the individually determined position of the spectacle lens relative to the eye and the at least three measured directions of the axis of the astigmatism, wherein the measuring of the direction of the axis of the astigmatism of the eye is performed for more than 30 different directions of gaze; wherein the calculating of the shape of the surface of the spectacle lens includes a simulation of light rays traversing the eye and the spectacle lens for a plurality of different directions of gaze of the eye; and
,wherein the direction of the astigmatism of the eye for the plurality of different directions of gaze is determined by interpolation of the measured directions of the axis.
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22. A method of making a spectacle lens providing at least an astigmatic correction, wherein the method comprises the steps of:
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measuring a direction of an axis of an astigmatism of an eye for each of at least three different directions of gaze of the eye; individually determining a position of the spectacle lens relative to the eye; and
,computing a shape of a surface of the spectacle lens based on the individually determined position of the spectacle lens relative to the eye and the at least three measured directions of the axis of the astigmatism, wherein the measuring of the direction of the axis of the astigmatism of the eye is performed for more than 60 different directions of gaze; wherein the calculating of the shape of the surface of the spectacle lens includes a simulation of light rays traversing the eye and the spectacle lens for a plurality of different directions of gaze of the eye; and
,wherein the direction of the astigmatism of the eye for the plurality of different directions of gaze is determined by interpolation of the measured directions of the axis.
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23. A method of making a spectacle lens providing at least an astigmatic correction, wherein the method comprises the steps of:
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measuring a direction of an axis of an astigmatism of an eye for each of at least three different directions of gaze of the eye; individually determining a position of the spectacle lens relative to the eye; and
,computing a shape of a surface of the spectacle lens based on the individually determined position of the spectacle lens relative to the eye and the at least three measured directions of the axis of the astigmatism; wherein the measuring of the direction of the axis of the astigmatism of the eye is performed for more than 15 different directions of gaze, wherein the calculating of the shape of the surface of the spectacle lens includes a simulation of light rays traversing the eye and the spectacle lens for a plurality of different directions of gaze of the eye; and
,wherein the direction of the astigmatism of the eye for the plurality of different directions of gaze is determined by interpolation of the measured directions of the axis.
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24. A method of making a spectacle lens providing at least an astigmatic correction, wherein the method comprises the steps of:
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measuring a direction of an axis of an astigmatism of an eye for each of at least three different directions of gaze of the eye; individually determining a position of the spectacle lens relative to the eye; computing a shape of a surface of the spectacle lens based on the individually determined position of the spectacle lens relative to the eye and the at least three measured directions of the axis of the astigmatism; and
,determining a primary orientation of the eye based on the at least three measured directions of the axis of the astigmatism, wherein the shape of the surface of the spectacle lens is calculated based on the individually determined position of the spectacle lens relative to the eye and by applying Listing'"'"'s Law based on the determined primary orientation of the eye.
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25. A method of making a spectacle lens providing at least an astigmatic correction, wherein the method comprises the steps of:
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measuring a direction of an axis of an astigmatism of an eye for each of at least three different directions of gaze of the eye; individually determining a position of the spectacle lens relative to the eye; and
,computing a shape of a surface of the spectacle lens based on the individually determined position of the spectacle lens relative to the eye and the at least three measured directions of the axis of the astigmatism; wherein the calculating of the shape of the surface of the spectacle lens includes a simulation of light rays traversing the eye and the spectacle lens for a plurality of different directions of gaze of the eye; and
,wherein the direction of the astigmatism of the eye for the plurality of different directions of gaze is determined by interpolation of the measured directions of the axis.
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26. Spectacles for a first and a second eye of a wearer, at least the first eye having an astigmatism, the astigmatism defining an axis with a direction measured in at least three different directions of gaze of the first eye, the spectacles comprising:
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a spectacle frame; a first spectacle lens mounted on said spectacle frame so as to correspond to the first eye of the wearer; a second spectacle lens mounted on said spectacle frame so as to correspond to the second eye of the wearer; said first spectacle lens having an individually determined position relative to the first eye; and
,said first spectacle lens defining a surface having a computed shape based on the determined position of the first spectacle lens relative to the first eye and the at least three measured directions of the axis of the astigmatism, wherein the direction of the axis of the astigmatism of the eye has been measured for more than 15 different directions of gaze, wherein the shape of the surface of the spectacle lens has been calculated by including a simulation of light rays traversing the eye and the spectacle lens for a plurality of different directions of gaze of the eye; and
,wherein the direction of the astigmatism of the eye for the plurality of different directions of gaze has been determined by interpolation of the measured directions of the axis.
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27. Spectacles for a first and a second eye of a wearer, at least the first eye having an astigmatism, the astigmatism defining an axis with a direction measured in at least three different directions of gaze of the first eye, the spectacles comprising:
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a spectacle frame; a first spectacle lens mounted on said spectacle frame so as to correspond to the first eye of the wearer; a second spectacle lens mounted on said spectacle frame so as to correspond to the second eye of the wearer; said first spectacle lens having an individually determined position relative to the first eye; and
,said first spectacle lens defining a surface having a computed shape based on the determined position of the first spectacle lens relative to the first eye and the at least three measured directions of the axis of the astigmatism, wherein a primary orientation of the eye has been determined based on the at least three measured directions of the axis of the astigmatism, wherein the shape of the surface of the spectacle lens has been calculated based on the individually determined position of the spectacle lens relative to the eye and by applying Listing'"'"'s Law based on the determined primary orientation of the eye.
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28. Spectacles for a first and a second eye of a wearer, at least the first eye having an astigmatism, the astigmatism defining an axis with a direction measured in at least three different directions of gaze of the first eye, the spectacles comprising:
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a spectacle frame; a first spectacle lens mounted on said spectacle frame so as to correspond to the first eye of the wearer; a second spectacle lens mounted on said spectacle frame so as to correspond to the second eye of the wearer; said first spectacle lens having an individually determined position relative to the first eye; and
,said first spectacle lens defining a surface having a computed shape based on the individually determined position of the first spectacle lens relative to the first eye and the at least three measured directions of the axis of the astigmatism, wherein the shape of the surface of the spectacle lens has been calculated by including a simulation of light rays traversing the eye and the spectacle lens for a plurality of different directions of gaze of the eye; and
,wherein the direction of the astigmatism of the eye for the plurality of different directions of gaze has been determined by interpolation of the measured directions of the axis.
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Specification