Lens element
AssigneeEssilor International
InventorGilles LE SAUX
Life of this patent
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Abstract
A method for manufacturing a lens element intended to be worn in front of an eye of a wearer, the method comprising obtaining a lens member comprising a holographic recording medium disposed on a first surface of the lens member, the holographic recording medium being configured to be able to convert an interference pattern into a holographic optical element, obtaining wearer prescription data relating at least to the prescription of the wearer, manufacturing a second surface of the lens member based on the wearer prescription data, and recording a holographic optical element within the holographic recording medium so as to provide an additional optical power of opposite sign to the prescribed optical power so as to slow down the progression of the abnormal refraction of the eye.
Claims16
-15. (canceled)
A method for manufacturing a lens element wearable in front of an eye of a wearer, the method comprising:
- obtaining a lens member comprising a holographic recording medium disposed on a first surface of the lens member, the holographic recording medium being configured to be able to convert an interference pattern into a holographic optical element;
- obtaining wearer prescription data relating at least to the prescription of the wearer;
- manufacturing a second surface of the lens member based on the wearer prescription data;
- and
- recording a holographic optical element within the holographic recording medium to provide an additional optical power of opposite sign to a prescribed optical power to slow down progression of abnormal refraction of the eye.
A lens member comprising:
- a first optical surface having a surface design,
- a second optical surface to be manufactured, and
- a holographic recording medium configured to be able to convert an interference pattern into a holographic optical element.
Dependencies are inferred from the claim text.