Method and device for increasing an optical system focal depth

Details Method and device for increasing an optical system focal depth Method and device for increasing an optical system focal depth

2011-05-31

2011-05-31

Farah, Ahmed M (Department: 3769)

Surgery

Miscellaneous

Methods

C606S005000

Reexamination Certificate

active

07950398

ABSTRACT:
A method and device for modifying optical system properties by means of a continuously multifocal profile, wherein said profile comprises a component for increasing the optical system focal depth and is calculated according to a fourth-order Zernike polynom. The aim of said invention is to avoid the eye base refraction and, for this purpose, said focal depth increasing component is also calculated according to the second-order Zernike polynom.

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