Optical Lens, Method for Designing Optical Lens, and Apparatus for Manufacturing Optical Lens
First Claim
1. An optical lens comprising:
- an object-side surface including an atoric surface element; and
an eyeball-side surface including an element that cancels a surface power shift produced by the atoric surface element,wherein the atoric surface element causes horizontal surface power at a fitting point to be greater than vertical surface power at the fitting point and causes a difference between the horizontal surface power and the vertical surface power to decrease along a horizontal reference line passing through the fitting point in a direction from the fitting point toward a periphery of the optical lens or causes a sign of the difference between the horizontal surface power and the vertical surface power to change along the horizontal reference line.
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Accused Products
Abstract
optical lens including, an object-side surface including an atoric surface element and an eyeball-side surface including an element that cancels a surface power shift produced by the atoric surface element, wherein the atoric surface element causes horizontal surface power at a fitting point to be greater than vertical surface power at the fitting point and causes a difference between the horizontal surface power and the vertical surface power to decrease along a horizontal reference line passing through the fitting point in a direction from the fitting point toward a periphery of the optical lens or causes a sign of the difference between the horizontal surface power and the vertical surface power to change along the horizontal reference line.
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Citations
7 Claims
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1. An optical lens comprising:
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an object-side surface including an atoric surface element; and an eyeball-side surface including an element that cancels a surface power shift produced by the atoric surface element, wherein the atoric surface element causes horizontal surface power at a fitting point to be greater than vertical surface power at the fitting point and causes a difference between the horizontal surface power and the vertical surface power to decrease along a horizontal reference line passing through the fitting point in a direction from the fitting point toward a periphery of the optical lens or causes a sign of the difference between the horizontal surface power and the vertical surface power to change along the horizontal reference line. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for designing an optical lens having an object-side surface and an eyeball-side surface, the method comprising:
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providing the object-side surface with an atoric surface element; and providing the eyeball-side surface with an element that cancels a surface power shift produced by the atoric surface element of the object-side surface, wherein the atoric surface element causes horizontal surface power at a fitting point to be greater than vertical surface power at the fitting point and the difference between the horizontal surface power and the vertical surface power to decrease along a horizontal reference line passing through the fitting point in a direction from the fitting point toward a periphery of the optical lens or the sign of the difference between the horizontal surface power and the vertical surface power to change along the horizontal reference line.
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Specification