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OPHTHALMIC APPARATUS WITH CORRECTIVE MERIDIANS HAVING EXTENDED TOLERANCE BAND WITH FREEFORM REFRACTIVE SURFACES
专利权人:
ABBOTT MEDICAL OPTICS INC.
发明人:
Huawei Zhao
申请号:
US15467786
公开号:
US20170273778A1
申请日:
2017.03.23
申请国别(地区):
US
年份:
2017
代理人:
摘要:
The embodiments disclosed herein include improved toric lenses and other ophthalmic apparatuses (including, for example, contact lens, intraocular lenses (IOLs), and the like) that includes a freeform-polynomial surface area that establishes a band of operational meridian for the apparatus to an intended correction meridian. The freeform-polynomial surface area is defined by a mathematical expression comprising a combination of one or more polynomial expressions (e.g., Chebyshev-based polynomial expression, Zernike-based polynomial expression, etc.) each having a distinct complex orders.
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