Bifocal multiorder diffractive lenses for vision correction
First Claim
1. A multiorder diffractive optical element comprising:
- one or more multiorder diffractive structures in which said one or more diffractive structures are each optimized in accordance with wavelengths for both photopic and scotopic vision.
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Abstract
A bifocal multiorder diffractive lens having a lens body with one or more first regions having a first multiorder diffractive structure providing near vision correction, and one or more second regions having a second multiorder diffractive structure providing distance vision correction, in which the lens defines an aperture divided between the first and second regions. The lens body may be provided by a single optical element or multiple optical elements. In other embodiments, a bifocal multiorder diffractive lens is provided by a single or multiple element lens body having a multiorder diffractive structure for distance vision correction and one or more refractive regions to add power for near vision correction, or a single or multiple element lens body shaped for refractive power for distance vision correction and a multiorder diffractive structure for add power for near vision correction. Multiorder diffractive structures may be optimized for photopic and scotopic vision.
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Citations
30 Claims
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1. A multiorder diffractive optical element comprising:
- one or more multiorder diffractive structures in which said one or more diffractive structures are each optimized in accordance with wavelengths for both photopic and scotopic vision.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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9. A multiorder diffractive lens comprising:
at least one multiorder diffractive structure which directs light of a plurality of different wavelengths to a single focus wherein said at least one multiorder diffractive structure is optimized for photopic and scotopic vision. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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26. A multiorder diffractive lens comprising:
two or more multiorder diffractive structures of different optical power, in which at least one of said diffractive structures directs light of a plurality of different wavelengths to a single focus wherein said at least one multiorder diffractive structure is optimized for both photopic and scotopic vision.
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27. A multiorder diffractive optical element comprising:
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one or more multiorder diffractive structures; and at least one of said diffractive structures has peak efficiencies at wavelengths corresponding to a plurality of selected wavelengths of peak operation efficiencies, wherein at least two of said plurality of selected wavelengths of peak operation efficiencies are each associated with different amounts of light through said optical element.
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28. A multiorder diffractive optical element comprising:
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one or more multiorder diffractive structures; and at least one of said diffractive structures has peak efficiencies at wavelengths corresponding to selected wavelengths of peak operation efficiencies, wherein said selected wavelengths of peak operation efficiencies are two in number and are associated with photopic and scotopic vision, respectively.
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29. A multiorder diffractive optical element comprising:
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one or more multiorder diffractive structures; and at least one of said diffractive structures has peak efficiencies at wavelengths corresponding to selected wavelengths of peak operation efficiencies, wherein said diffractive structures number two or more, and at least two of said diffractive structures have different optical powers. - View Dependent Claims (30)
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Specification