# US 12,181,735 B2 · Optical element or polarizing plate, and eyewear using same

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- Number: US 12,181,735 B2
- Document ID: US12181735B2
- Status: Granted
- Kind: B2
- Application number: 17/609,814
- Filed: 2020-05-13
- Published: 2022-07-21
- Granted: 2024-12-31
- Earliest claimed: 2019-05-17
- Assignees: Nippon Kayaku Kabushiki Kaisha
- Applicants: Nippon Kayaku Kabushiki Kaisha
- Inventors: Kouichi Tanaka; Shohei Yoshida
- Web page: https://patentgrep.com/patent/US12181735B2

## CPC

- G02C 7/104: {having spectral characteristics for purposes other than sun-protection}
- G02B 5/3033: {in the form of a thin sheet or foil, e.g. Polaroid}
- G02B 27/281: {used for attenuating light intensity, e.g. comprising rotatable polarising elements}
- G02C 7/021: {with pattern for identification or with cosmetic or therapeutic effects (methods and processes take preference, e.g. printing, marking or copying processes B41M; identification in general G09F3/00; producing decorative effects in general B44C; surface treatment of glass C03C15/00 - C03C23/00; positioning or marking of lenses B24B13/0055)}
- G02C 7/12: Polarisers
- G02C 11/04: Illuminating means
- 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)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

The present invention provides an optical element characterized in that a polarized-light-emitting element for emitting polarized light in the visible region and a non-light-emitting polarizing element for absorbing and/or reflecting light in the visible region are layered.

## Claims

### Claim 1

An eyewear lens comprising an optical element, wherein the optical element has a side that receives incident light from an external light source and an eyeball side, and comprises a polarized light-emitting element and an absorption polarizing element, wherein the polarized light-emitting element comprises a first substrate comprising a polarized light-emitting pigment, the first substrate being supported by a first support that does not contain an ultraviolet absorbent, the first support being on said side that receives incident light from the external light source; wherein said polarized light-emitting element polarizes and emits light in a visible region and is laminated with the absorption polarizing element that comprises a second substrate and is supported by a second support that contains an ultraviolet absorbent, and absorbs and/or reflects light in the visible region, and wherein the order of lamination, from the side that receives incident light from the external light source to the eyeball side, is (1) the first support, the polarized light-emitting element, the second support, and then the absorption polarizing element; or (2) the first support, the polarized light-emitting element, the absorption polarizing element, and then the second support, and wherein the polarized light-emitting element has an absorption wavelength of 350 to 380 nm.

### Claim 2 (depends on 1)

The eyewear lens according to claim 1, wherein a light-emitting polarizing axis of the polarized light-emitting element is orthogonal to a polarizing axis of the absorption polarizing element.

### Claim 3 (depends on 1)

The eyewear lens according to claim 1, wherein the polarized light-emitting element and the absorption polarizing element are laminated via an adhesive layer.

### Claim 4 (depends on 1)

The eyewear lens according to claim 1, wherein the polarized light-emitting element and the absorption polarizing element are laminated via a third support.

### Claim 5 (depends on 1)

Eyewear comprising the eyewear lens according to claim 1.