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US 12,717,167 B2Granted
Ophthalmic lens and method for designing an ophthalmic lens
AssigneeCarl Zeiss Meditec AG
InventorMario Gerlach
Life of this patent
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Abstract
An ophthalmic lens includes a lens body with a predetermined refractive effect and a ring-shaped, diffractive structuring. The ring-shaped, diffractive structuring (4-4) has a waveform in the radial direction which differs from a sinusoidal waveform by an asymmetry and/or a flattening and/or a periodicity, wherein the asymmetry and/or flattening and/or periodicity is constant or changes strictly monotonically over the entire radial curve of the waveform. Further, a method for designing an ophthalmic lens is disclosed.
Claims18
An ophthalmic lens comprising:
- a lens body with a predetermined refractive effect;
- and
- a ring-shaped, diffractive structuring, wherein the ring-shaped, diffractive structuring has a waveform in a radial direction which differs from a sinusoidal waveform of a square of a radius by an asymmetry, which is constant or changes strictly monotonically over an entire radial curve of the waveform,
- wherein the asymmetry is such that a maximum absolute value of the gradient of a falling edge is greater than the maximum absolute value of the gradient of a rising edge in respective periods of the waveform, and
- wherein a ratio of the maximum absolute value of the gradient of the falling edge to the maximum absolute value of the gradient of the rising edge is at least 1.5.
2 more elements
An ophthalmic lens comprising:
- a lens body with a predetermined refractive effect;
- and
- a ring-shaped, diffractive structuring, wherein the ring-shaped, diffractive structuring has a waveform in a radial direction which differs from a sinusoidal waveform of a square of a radius by an asymmetry, which changes strictly monotonically over an entire radial curve of the waveform, and
- wherein the asymmetry is such that a maximum absolute value of a gradient of a rising edge is greater than the maximum absolute value of the gradient of a falling edge in the respective periods.
1 more element
Dependencies are inferred from the claim text.