Multifocal diffractive ophthalmic lenses
A lens according to the invention has diffractive power and two primary foci, where one focus is associated with the first diffractive order and one with the second diffractive order.
Saved in:
Main Authors | , |
---|---|
Format | Patent |
Language | English French German |
Published |
12.02.1992
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | A lens according to the invention has diffractive power and two primary foci, where one focus is associated with the first diffractive order and one with the second diffractive order. |
---|---|
Bibliography: | Application Number: EP19910307213 |