Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
114 words
A multifocus, concentric annular ring lens comprising: a. said lens having a front surface and an opposite back surface, wherein one of the front and back surfaces defines a central area comprising a circular disc having a spherical surface corresponding to a basic prescription Rx spherical distance optical power; b. a plurality of annular rings surrounding the central area and having alternating spherical near optical powers and spherical distance optical powers; and c. at least one intermediate optical power annular ring, located in the outer region of the lens optic zone, having an intermediate optical power, intermediate to the distance optical power and the near optical power, to provide visual acuity at intermediate distances.
Claim 2
Dependent Claim
32 words
A multifocus, concentric annular ring lens as claimed in claim 1, wherein the intermediate optical power annular ring is the second annular ring from the outer edge of the lens optic zone.
Claim 3
Dependent Claim
33 words
A multifocus, concentric annular ring lens as claimed in claim 1, wherein the intermediate optical power annular ring is the outermost annular ring which defines the outer circumference of the lens optic zone.
Claim 4
Dependent Claim
34 words
A multifocus, concentric annular ring lens as claimed in claim 1, wherein the intermediate optical power annular ring is an annular ring in the outer radial portion of the optic zone of the lens.
Claim 5
Dependent Claim
32 words
A multifocus, concentric annular ring lens as claimed in claim 1, wherein the intermediate optical power annular ring consists of the entire outer radial portion of the optic zone of the lens.
Claim 6
Dependent Claim
34 words
A multifocus, concentric annular ring lens as claimed in claim 1, wherein the intermediate optical power annular ring is an annular ring in the middle radial portion of the optic zone of the lens.
Claim 7
Dependent Claim
35 words
A multifocus, concentric annular ring lens as claimed in claim 6, wherein the intermediate optical power annular ring is near the outer edge of the middle radial portion of the optic zone of the lens.
Claim 8
Dependent Claim
27 words
A multifocus, concentric annular ring lens as claimed in claim 1, wherein the lens comprises a contact lens to be worn on the cornea of the eye.
Claim 9
Dependent Claim
21 words
A multifocus, concentric annular ring lens as claimed in claim 8, wherein the contact lens comprises a soft hydrogel contact lens.
Claim 10
Dependent Claim
18 words
A multifocus, concentric annular ring lens as claimed in claim 1, wherein the lens comprises an intraocular lens.
Claim 11
Dependent Claim
41 words
A multifocus, concentric annular ring lens as claimed in claim 1, wherein the widths of individual annular rings are different to generate a power profile which varies to generate different ratios of distance optical power to intermediate and near optical power.
Claim 12
Dependent Claim
36 words
A multifocus, concentric annular ring lens as claimed in claim 1, wherein the central area and the plurality of annular rings are formed on the rear surface of the lens to minimize flare and glare problems.