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Progressive multifocal ophthalmic lens
专利权人:
发明人:
Pai-Hung Chien
申请号:
US14452831
公开号:
US09395560B2
申请日:
2014.08.06
申请国别(地区):
US
年份:
2016
代理人:
摘要:
A progressive multifocal ophthalmic lens includes at least three high power segments, at least three low power segments, and a plurality of progressive power segments. Shapes of the high power segments and the low power segments are sectors. The high power segments and the low power segments are disposed alternately along an arc direction of the progressive multifocal ophthalmic lens. Shapes of the progressive power segments are sectors. Two sides of each of the progressive power segments along the arc direction respectively connect one of the high power segments and one of the low power segments. The high power segments, the low power segments, and the progressive power segments form a progressive multifocal surface.
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