# US 12,007,629 B2 · UV and high energy visible absorbing ophthalmic lenses

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- Number: US 12,007,629 B2
- Document ID: US12007629B2
- Status: Granted
- Kind: B2
- Application number: 17/819,272
- Filed: 2022-08-11
- Published: 2022-12-01
- Granted: 2024-06-11
- Earliest claimed: 2015-09-29
- Assignees: HOYA Optical Labs of America, Inc.
- Applicants: Hoya Optical Labs of America, Inc.
- Inventors: Steven Harold Nahm; Richard Blacker; David Kissel; David Olund
- Web page: https://patentgrep.com/patent/US12007629B2

## CPC

- G02C 7/108: {Colouring materials}
- B29C 35/0805: {using electromagnetic radiation}
- B29D 11/00009: {Production of simple or compound lenses}
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 27/08: of synthetic resin
- B32B 27/18: characterised by the use of special additives
- B32B 27/365: {comprising polycarbonates}
- B32B 27/40: comprising polyurethanes
- G02C 7/10: Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
- B29C 2035/0827: {using UV radiation}
- B29D 11/00634: {Production of filters}
- B29D 11/0073: {Optical laminates}
- B29K 2075/00: Use of {PU, i.e.} polyureas or polyurethanes {or derivatives thereof}, as moulding material
- B29K 2105/0002: {monomers or prepolymers}
- B29K 2105/0005: {containing compounding ingredients (releasing, lubricating or separating agents B29C33/56, fibers B29K2105/08, B29K2105/12; fillers B29K2105/16, recycled material B29K2105/26)}
- B32B 2250/02: 2 layers
- B32B 2250/03: 3 layers
- B32B 2250/24: All layers being polymeric
- B32B 2307/21: Anti-static
- B32B 2307/40: having particular optical properties
- B32B 2307/4026: within the layer by addition of a colorant, e.g. pigments, dyes
- B32B 2307/412: Transparent
- B32B 2307/42: Polarizing, birefringent, filtering
- B32B 2307/71: Resistive to light or to UV
- B32B 2307/73: Hydrophobic
- B32B 2307/732: Dimensional properties
- B32B 2551/00: Optical elements
- G02B 5/223: {containing organic substances, e.g. dyes, inks or pigments}
- G02C 2202/16: Laminated or compound lenses
- 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)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

An ophthalmic lens operable to protect the eye from harmful ultraviolet and high energy visible wavelengths of light and methods for producing the same.

## Claims

### Claim 1

A laminate of an eye-glass lens comprising:
a light absorbing layer containing one or more light absorbers is disposed between a first optical film and a second optical film;
wherein a thickness of the laminate and a weight percent of the one or more light absorbers are configured to follow a non-linear relationship to achieve a transmittance of not more than 50 percent for wavelengths in a range of 280 to 443 nm.

### Claim 2 (depends on 1)

The laminate of claim 1, wherein the light absorbing layer containing one or more light absorbers comprises a polyurethane based adhesive layer.

### Claim 3 (depends on 2)

The laminate of claim 2, wherein the polyurethane based adhesive layer comprises an isocyanate prepolymer, a polyol and a crosslinker.

### Claim 4 (depends on 1)

The laminate of claim 1, wherein the first optical film and the second optical film comprise a polycarbonate optical film.

### Claim 5 (depends on 1)

The laminate of claim 1, wherein
1) the thickness is greater than 1 mm and the weight percent of the light absorbing compounds up to 1; or
2) the thickness is in a range of 0.1 mm to 1 mm and the weight percentage of the light absorbing compounds up to 3; or,
3) the thickness is in a range of 0.01 mm and 0.1 mm and the weight percentage of the light absorbing compounds up to 10.

### Claim 6 (depends on 1)

The laminate of claim 1, wherein the non-linear relationship between the thickness of the laminate and the weight percent of the one or more light absorbers comprises the weight percent of up to 10 of the one or more light absorbers and the thickness in a range of 0.01 mm and 0.1 mm of the laminate.

### Claim 7 (depends on 1)

The laminate of claim 1, wherein the non-linear relationship between the thickness of the laminate and the weight percent of the one or more light absorbers comprises the weight percent of up to 3 of the one or more light absorbers and the thickness in a range of 0.1 mm and 1 mm of the laminate.

### Claim 8 (depends on 1)

The laminate of claim 1, wherein the non-linear relationship between the thickness of the laminate and the weight percent of the one or more light absorbers comprises the weight percent of up to 1 of the one or more light absorbers and the thickness of greater than 1 mm of the laminate.

### Claim 9 (depends on 1)

The laminate of claim 1, wherein the non-linear relationship between the thickness of the laminate and the weight percent of the one or more light absorbers comprises the weight percent in a range of 6-8 of a light absorber and the thickness of 0.041 mm of the laminate to achieve the transmittance of not more than 50 percent for wavelengths in a range of 395 to 412 nm.

### Claim 10 (depends on 1)

The laminate of claim 1, wherein the non-linear relationship between the thickness of the laminate and the weight percent of the one or more light absorbers comprises the weight percent of 2 for each of said one or more light absorbers and the thickness of 0.041 mm of the laminate to achieve the transmittance of not more than 50 percent for wavelengths in a range of 395 to 414 nm.

### Claim 11 (depends on 1)

The laminate of claim 1, the light absorbing layer is an adhesive layer of the laminate.

### Claim 12

An eyeglass lens comprising:
a laminate having a polyurethane based adhesive layer containing one or more light absorbers which is disposed between a first optical film and a second optical film to form a three-layer structure of the laminate;
wherein the three-layer structure of the laminate is configured to achieve a transmittance of not more than 50 percent for wavelengths in a range of 280 to 443 nm, when a non-linear relationship exists between a thickness of the laminate and a weight percent of the one or more light absorbers.

### Claim 13 (depends on 11)

The eyeglass lens of claim 11, wherein the eyeglass lens is configured to form through an injection molding of a molten thermoplastic on to the laminate.

### Claim 14 (depends on 11)

The eyeglass lens of claim 11, wherein the polyurethane based adhesive layer containing one or more light absorbers is a monolithic film.

### Claim 15 (depends on 11)

The eyeglass lens of claim 11, wherein
1) the thickness is greater than 1 mm and the weight percent of the light absorbing compounds up to 1; or
2) the thickness is in a range of 0.1 mm to 1 mm and the weight percentage of the light absorbing compounds up to 3; or,
3) the thickness is in a range of 0.01 mm and 0.1 mm and the weight percentage of the light absorbing compounds up to 10.

### Claim 16

An eyeglass lens comprising:
a light absorbing layer having a non-linear relationship between an optical path length and a weight percentage of light absorbing compounds in the light absorbing layer; the light absorbing layer having a transmittance of not more than 50 percent for wavelengths in a range of 280 to 443 nm;
wherein:
1) the optical path length is greater than 1 mm and the weight percent of the light absorbing compounds up to 1; or
2) the optical path length is in a range of 0.1 mm to 1 mm and the weight percentage of the light absorbing compounds up to 3; or,
3) the optical path length is in a range of 0.01 mm and 0.1 mm and the weight percentage of the light absorbing compounds up to 10.

### Claim 17 (depends on 16)

The eyeglass lens of claim 16, wherein the non-linear relationship between the optical path length and the weight percent of the light absorbers comprises the weight percent in a range of 6-8 of the light absorbers and the optical path length of 0.041 mm to achieve the transmittance of not more than 50 percent for wavelengths in a range of 395 to 412 nm.

### Claim 18 (depends on 16)

The eyeglass lens of claim 16, wherein the non-linear relationship between the optical path length and the weight percent of the light absorbers comprises the weight percent of 2 for each of a light absorber and the optical path length of 0.041 mm to achieve the transmittance of not more than 50 percent for wavelengths in a range of 395 to 414 nm.

### Claim 19 (depends on 16)

The eyeglass lens of claim 16, wherein the light absorbing layer is a component of a composite ophthalmic lens.

### Claim 20 (depends on 16)

The eyeglass lens of claim 16, wherein the light absorbing layer comprises a curable composition.