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ADJUSTING THE APODIZATION PATTERN FOR DIFFRACTIVE IOLS
专利权人:
NOVARTIS AG
发明人:
RICHARD J. MACKOOL
申请号:
US15059581
公开号:
US20170252151A1
申请日:
2016.03.03
申请国别(地区):
US
年份:
2017
代理人:
摘要:
An ophthalmic device including an ophthalmic lens having anterior and posterior surfaces and at least one diffraction grating is described. The diffraction grating(s) are on the anterior and/or posterior surface(s). The diffraction grating(s) include zones. A first zone is at a first distance range from a center of the lens. A second zone is at a second distance range further from the center than the first distance range. A repeat zone is at a third distance range further from the center than the second distance range. The first zone includes echelette(s) having a first step height and a first radius of curvature. The second zone includes echelette(s) having a second step height and a second radius of curvature. The repeat zone includes echelette(s) having at least one of the first step height and the first radius of curvature.
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