# US 11,079,517 B2 · Optical apparatus with structure for liquid invariant performance

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- Number: US 11,079,517 B2
- Document ID: US11079517B2
- Status: Granted
- Kind: B2
- Application number: 16/028,961
- Filed: 2018-07-06
- Published: 2019-02-07
- Granted: 2021-08-03
- Earliest claimed: 2010-02-09
- Assignees: Brien Holden Vision Institute Limited
- Applicants: Brien Holden Vision Institute Limited
- Inventors: Zeev Zalevsky; Ofer Limon
- Web page: https://patentgrep.com/patent/US11079517B2

## CPC

- G02C 7/022: {Ophthalmic lenses having special refractive features achieved by special materials or material structures (G02C7/049 takes precedence)}
- A61F 2/16: Intraocular lenses
- A61F 2/1648: {Multipart lenses}
- B82Y 20/00: Nanooptics, e.g. quantum optics or photonic crystals
- G02B 3/0081: {having one or more elements with analytic function to create variable power (variable magnification in general G02B15/00)}
- G02B 5/18: Diffraction gratings {(holographic optical elements G02B5/32, G03H; integrally combined with optical fibres G02B6/02057; for coupling light guides G02B6/34; integrally combined with optical integrated light guides G02B6/12; grating systems G02B27/44)}
- G02B 5/1828: {having means for producing variable diffraction (controlling the direction of light by means of one or more diffracting elements G02B26/0808; acousto-optical elements G02F1/11, G02F1/33; electro- or magneto-optical diffraction G02F1/292, G02F1/2955)}
- G02B 5/1895: {such optical elements having dioptric power}
- G02B 27/0025: {for optical correction, e.g. distorsion, aberration}
- G02B 27/0037: {with diffracting elements (G02B27/0056 takes precedence; holographic optical elements G02B5/32; zone systems G02B5/1876)}
- G02B 27/0075: {with means for altering, e.g. increasing, the depth of field or depth of focus}
- G02B 27/4205: {having a diffractive optical element [DOE] contributing to image formation, e.g. whereby modulation transfer function MTF or optical aberrations are relevant}
- G02B 27/4211: {correcting chromatic aberrations (G02B27/0056, G02B27/4222, G02B27/4227 take precedence)}
- G02C 7/04: Contact lenses for the eyes (disinfection or sterilisation of contact lenses A61L12/00)
- G02C 7/049: {Contact lenses having special fitting or structural features achieved by special materials or material structures}
- G02C 7/06: bifocal; multifocal {; progressive (G02C7/041 takes precedence)}
- A61F 2/1613: {having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus}
- G02B 3/00: Simple or compound lenses
- G02C 2202/20: Diffractive and Fresnel lenses or lens portions
- G02C 2202/22: Correction of higher order and chromatic aberrations, wave front measurement and calculation
- Y10S 977/902: Specified use of nanostructure
- Y10S 977/932: for electronic or optoelectronic application
- G02C: SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES (trial frames for testing the eyes A61B3/04; goggles or eyeshields not having the same features as spectacles A61F9/00)
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A phase-adjusting element configured to provide substantially liquid-invariant extended depth of field for an associated optical lens. One example of a lens incorporating the phase-adjusting element includes the lens having surface with a modulated relief defining a plurality of regions including a first region and a second region, the first region having a depth relative to the second region, and a plurality of nanostructures formed in the first region. The depth of the first region and a spacing between adjacent nanostructures of the plurality of nanostructures is selected to provide a selected average index of refraction of the first region, and the spacing between adjacent nanostructures of the plurality of nanostructures is sufficiently small that the first region does not substantially diffract visible light.

## Claims

### Claim 1

A lens comprising:
a first region;
a second region; and
a plurality of optical elements formed on the surface of the first region;
wherein the plurality of optical elements has a predefined width and a predefined spacing between the plurality of optical elements;
wherein the lens has a first refractive index and the plurality of optical elements has a second refractive index, different than the first refractive index; and
wherein the spacing between the plurality of optical elements is substantially uniform.

### Claim 2 (depends on 1)

The lens of claim 1, wherein the plurality of optical elements form a surface relief on the surface of the lens.

### Claim 3 (depends on 1)

The lens of claim 1, wherein the plurality of optical elements are spaced apart optically transparent regions that have a refractive index and/or a thickness different than the thickness of the surrounding regions of the lens.

### Claim 4 (depends on 1)

The lens of claim 1, wherein the spacing between the plurality of optical elements decreases from a largest spacing closest to a center of the lens to the smallest spacing closest to a edge of the lens.

### Claim 5 (depends on 1)

The lens of claim 1, wherein the lens is manufactured using a first material.

### Claim 6 (depends on 5)

The lens of claim 5, wherein the plurality of optical elements are manufactured using a second material, different than the first material.

### Claim 7 (depends on 1)

The lens of claim 1, wherein the plurality of optical elements have a rectangular, dome, cylindrical, and/or random shape.

### Claim 8 (depends on 1)

The lens of claim 1, wherein the second region is an annular region surrounding the first region.

### Claim 9 (depends on 1)

The lens of claim 1, wherein the first region is an annular region surrounding the second region.

### Claim 10 (depends on 1)

The lens of claim 1, wherein the first region comprises a plurality of concentric rings.

### Claim 11 (depends on 1)

The lens of claim 1, wherein the first region is square or rectangular in shape.

### Claim 12 (depends on 1)

The lens of claim 1, wherein the plurality of optical elements are formed using a deposition process.

### Claim 13 (depends on 1)

The lens of claim 1, wherein the lens is a spectacle lens or a contact lens.

### Claim 14

A lens comprising:
a first region;
a second region; and
a plurality of optical elements formed on the surface of the first region;
wherein the plurality of optical elements has a predefined width and a predefined spacing between the plurality of optical elements; and
wherein the lens is manufactured using a first material and has a first refractive index and the plurality of optical elements are manufactured using a second material, different than the first material; and
wherein the spacing between the plurality of optical elements is substantially uniform.

### Claim 15 (depends on 14)

The lens of claim 14, wherein the plurality of optical elements has a second refractive index, different than the first material.

### Claim 16 (depends on 14)

The lens of claim 14, wherein the plurality of optical elements form a surface relief on the surface of the lens.

### Claim 17 (depends on 14)

The lens of claim 14, wherein the plurality of optical elements are spaced apart optically transparent regions that have a refractive index and/or a thickness different than the thickness of the surrounding regions of the lens.

### Claim 18 (depends on 14)

The lens of claim 14, wherein the spacing between the plurality of optical elements decreases from a largest spacing closest to a center of the lens to the smallest spacing closest to a edge of the lens.

### Claim 19 (depends on 14)

The lens of claim 14, wherein the plurality of optical elements have a rectangular, dome, cylindrical, and/or random shape.

### Claim 20 (depends on 14)

The lens of claim 14, wherein the second region is an annular region surrounding the first region.

### Claim 21 (depends on 14)

The lens of claim 14, wherein the first region is an annular region surrounding the second region.

### Claim 22 (depends on 14)

The lens of claim 14, wherein the first region comprises a plurality of concentric rings.

### Claim 23 (depends on 14)

The lens of claim 14, wherein the first region is square or rectangular in shape.

### Claim 24 (depends on 14)

The lens of claim 14, wherein the plurality of optical elements are formed using a deposition process.

### Claim 25 (depends on 14)

The lens of claim 14, wherein the lens is a spectacle lens or a contact lens.

### Claim 26

A lens comprising:
a first region that is square or rectangular in shape;
a second region; and
a plurality of optical elements formed on the surface of the first region;
wherein the plurality of optical elements has a predefined width and a predefined spacing between the plurality of optical elements; and
wherein the lens has a first refractive index; and
wherein the spacing between the plurality of optical elements is substantially uniform.

### Claim 27 (depends on 26)

The lens of claim 26, wherein the plurality of optical elements has a second refractive index, different than the first refractive index.

### Claim 28 (depends on 26)

The lens of claim 26, wherein the plurality of optical elements form a surface relief on the surface of the lens.

### Claim 29 (depends on 26)

The lens of claim 26, wherein the plurality of optical elements are spaced apart optically transparent regions that have a refractive index and/or a thickness different than the thickness of the surrounding regions of the lens.

### Claim 30 (depends on 26)

The lens of claim 26, wherein the spacing between the plurality of optical elements decreases from a largest spacing closest to a center of the lens to the smallest spacing closest to a edge of the lens.

### Claim 31 (depends on 26)

The lens of claim 26, wherein the lens is manufactured using a first material.

### Claim 32 (depends on 31)

The lens of claim 31, wherein the plurality of optical elements are manufactured using a second material, different than the first material.

### Claim 33 (depends on 26)

The lens of claim 26, wherein the plurality of optical elements have a rectangular, dome, cylindrical, and/or random shape.

### Claim 34 (depends on 26)

The lens of claim 26, wherein the second region is an annular region surrounding the first region.

### Claim 35 (depends on 26)

The lens of claim 26, wherein the first region is an annular region surrounding the second region.

### Claim 36 (depends on 26)

The lens of claim 26, wherein the first region comprises a plurality of concentric rings.

### Claim 37 (depends on 26)

The lens of claim 26, wherein the plurality of optical elements are formed using a deposition process.

### Claim 38 (depends on 26)

The lens of claim 26, wherein the lens is a spectacle lens or a contact lens.