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AJUSTEMENT DU MOTIF D'APODISATION POUR CRISTALLIN ARTIFICIELS DE DIFFRACTION
专利权人:
NOVARTIS AG
发明人:
MACKOOL, RICHARD
申请号:
CA3012293
公开号:
CA3012293A1
申请日:
2017.02.16
申请国别(地区):
CA
年份:
2017
代理人:
摘要:
An ophthalmic device including an ophthalmic lens (110) having anterior and posterior surfaces (114, 112) and at least one diffraction grating (120) is described. The diffraction grating(s) are on the anterior and/or posterior surface(s). The diffraction grating(s) include zones (122, 124, 126). 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) (130) having a first step height and a first radius of curvature. The second zone includes echelette(s) (130) having a second step height and a second radius of curvature. The repeat zone includes echelette(s) (130) having at least one of the first step height and the first radius of curvature.
来源网站:
中国工程科技知识中心
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