Ophthalmic lens
First Claim
1. An ophthalmic lens comprising a diffractive part comprising a diffractive surface profile and a refractive part comprising at least one surface, which is configured to compensate a passing wavefront at least partly for at least one type of monochromatic aberration introduced by at least one optical part of the eye, said diffractive part being capable of compensating a passing wavefront at least partly for chromatic aberration introduced by at least one optical part of the eye, said refractive and diffractive parts being adapted together to contribute to a required power of the lens.
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Accused Products
Abstract
According to the invention the ophthalmic lens further comprises a refractive part comprising at least one surface, which is configured to compensate a passing wavefront at least partly for at least one type of monochromatic aberration introduced by at least one of the optical parts of the eye. Said diffractive part is capable of compensating a passing wavefront at least partly for chromatic aberration introduced by at least one of the optical parts of the eye. Furthermore said refractive and diffractive parts together contribute to a required power of the lens.
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Citations
43 Claims
- 1. An ophthalmic lens comprising a diffractive part comprising a diffractive surface profile and a refractive part comprising at least one surface, which is configured to compensate a passing wavefront at least partly for at least one type of monochromatic aberration introduced by at least one optical part of the eye, said diffractive part being capable of compensating a passing wavefront at least partly for chromatic aberration introduced by at least one optical part of the eye, said refractive and diffractive parts being adapted together to contribute to a required power of the lens.
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36. An ophthalmic lens comprising a diffractive part and a refractive part comprising at least one surface, which is configured to compensate a passing wavefront at least partly for at least one type of monochromatic aberration introduced by at least one optical part of the eye, said diffractive part being capable of compensating a passing wavefront at least partly for chromatic aberration introduced by at least one optical part of the eye, said refractive and diffractive parts being adapted together to contribute to a required power of the lens, wherein the refractive part comprises an aspheric surface, which compensates a passing wavefront at least partly for the spherical aberration introduced by at least one optical part of the eye and optionally also by the diffractive part of the lens, and wherein the lens together with the eye provides a polychromatic image quality, which when expressed as MTF(50) (Modulation Transfer Function at 50 cycles per millimeter) is adapted to perform at least about 40% higher than an aspheric lens compensating for the same spherical aberration but without compensating for the chromatic aberration.
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37. An ophthalmic lens comprising a diffractive part and a refractive part comprising at least one surface, which is configured to compensate a passing wavefront at least partly for at least one type of monochromatic aberration introduced by at least one optical part of the eye, said diffractive part being capable of compensating a passing wavefront at least partly for chromatic aberration introduced by at least one optical part of the eye, said refractive and diffractive parts being adapted together to contribute to a required power of the lens, wherein the lens comprises an anterior surface, and the anterior surface is an aspheric surface, on which a diffractive profile is superimposed, wherein the diffractive surface profile consists of a number of concentric rings, wherein the profile height of the diffractive surface profile is one design wavelength, and wherein the radial width of a first zone of the diffractive profile is 0.365 mm for a 20D lens.
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38. An ophthalmic lens comprising a diffractive part and a refractive part comprising at least one surface, which is configured to compensate a passing wavefront at least partly for at least one type of monochromatic aberration introduced by at least one optical part of the eye, said diffractive part being capable of compensating a passing wavefront at least partly for chromatic aberration introduced by at least one optical part of the eye, said refractive and diffractive parts being adapted together to contribute to a required power of the lens, wherein the lens comprises an anterior surface and a posterior surface, the anterior surface of the lens is an aspheric surface and the posterior surface of the lens is flat and has a diffractive profile, wherein the diffractive part is a diffractive surface profile consisting of a number of concentric rings, and wherein the radial width of a first zone of the diffractive profile is 0.516 mm for a 20D lens.
Specification