Intra-ocular lens or contact lens exhibiting large depth of...

Details Intra-ocular lens or contact lens exhibiting large depth of... Intra-ocular lens or contact lens exhibiting large depth of...

2007-10-30

2007-10-30

Sugarman, Scott J. (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S16000R, C623S005110, C623S006230

Reexamination Certificate

active

10562943

ABSTRACT:
Circular and annular lens zones are disclosed which, at a given lens area, exhibit a depth of focus of a lens of considerably smaller area. The large depth of focus is achieved by imparting the lens zones a refractive power profile. An assembly of such large depth of focus lens zones represents a lens of large diameter which lens, in polychromatic light, exhibits essentially the same depth of focus as the lens zones from which it is composed.

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