您的位置: 首页 > 农业专利 > 详情页

Multifocal diffractive ophthalmic lens using suppressed diffractive order
专利权人:
NOVARTIS AG
发明人:
Myoung-Taek Choi,Xin Hong,Yueai Liu
申请号:
US14575333
公开号:
US09335564B2
申请日:
2014.12.18
申请国别(地区):
US
年份:
2016
代理人:
摘要:
A multifocal ophthalmic lens includes an ophthalmic lens and a diffractive element. The ophthalmic lens has a base curvature corresponding to a base power. The diffractive element produces constructive interference in at least four consecutive diffractive orders corresponding a range of vision between near and distance vision. The constructive interference produces a near focus, a distance focus corresponding to the base power of the ophthalmic lens, and an intermediate focus between the near focus and the distance focus. A diffraction efficiency of at least one of the diffractive orders is suppressed to less than ten percent.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/
相关发明人
相关专利

意 见 箱

匿名:登录

个人用户登录

找回密码

第三方账号登录

忘记密码

个人用户注册

必须为有效邮箱
6~16位数字与字母组合
6~16位数字与字母组合
请输入正确的手机号码

信息补充