Toric lens
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jun 12, 2018
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N/A
app pub date -
Jun 13, 2014
filing date -
Jun 13, 2014
priority date (Note) -
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Abstract
A toric lens includes a first surface, a second surface, two first sector zones, and two second sector zones. The first surface and the second surface are opposite to each other. Each of the first sector zones has a first curvature on the first surface along a radial direction of the toric lens, and the first curvature is constant along an arc direction of the toric lens. The two second sector zones are alternately arranged with the two first sector zones. Each of the second sector zones has a second curvature on the first surface along the radial direction, and the second curvature is constant along the arc direction. The first curvature is steeper than the second curvature.
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