Ophthalmic Lenses and Methods for Correcting, Slowing, Reducing, and/or Controlling the Progression of Myopia in Conjunction with Use of Atropine or Related Compounds
US-2021282966-A1 · Sep 16, 2021 · US
Spectacle lens and method for designing the same
US12007626B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12007626-B2 |
| Application number | US-202017423317-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 18, 2020 |
| Priority date | Jun 25, 2019 |
| Publication date | Jun 11, 2024 |
| Grant date | Jun 11, 2024 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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- CPC / IPC classifications
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- Citations and related patents
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Abstract
Official abstract text for this publication.
An object is to not lose an effect of suppressing the progression of myopia or hyperopia even in a peripheral area of a spectacle lens. A spectacle lens and a technology related thereto are provided, the spectacle lens including: a first area that causes light rays incident on an object-side face of the lens to exit from an eyeball-side face of the lens and to converge at a predetermined position A on a retina of a wearer; and a plurality of second areas configured to cause light rays to converge at a position B on the object side or a position C on the distal side relative to the position A, wherein, in the first area in a peripheral area of the spectacle lens that is a radius range from 4.5 mm to 25 mm of a lens center, a refractive power error in a meridional direction and a refractive power error in a sagittal direction have values that cause light rays to converge in a direction extending from a vicinity of the position A toward the position B if the second areas cause the light rays to converge at the position B, or have values that cause light rays to converge in a direction extending from the vicinity of the position A toward the position C if the second areas cause the light rays to converge at the position C.
First claim
Opening claim text (preview).
The invention claimed is: 1. A spectacle lens comprising: a first area that causes light rays incident on an object-side face of the lens to exit from an eyeball-side face of the lens and to converge at a predetermined position A on a retina of a wearer; and a plurality of second areas configured to cause light rays to converge at a position B on the object side or a position C on the distal side relative to the position A, wherein, in the first area in a peripheral area of the spectacle lens that is a radius range from 4.5 mm to 25 mm of a lens center, a refractive power error in a meridional direction and a refractive power error in a sagittal direction have values that cause light rays to converge in a direction extending from a vicinity of the position A toward the position B if the second areas cause the light rays to converge at the position B, or have values that cause light rays to converge in a direction extending from the vicinity of the position A toward the position C if the second areas cause the light rays to converge at the position C. 2. The spectacle lens according to claim 1 , wherein the second areas are convex areas, and in the first area in the peripheral area, both the refractive power error in the meridional direction and the refractive power error in the sagittal direction are −0.25 D or more. 3. The spectacle lens according to claim 1 , wherein the second areas are convex areas, and the refractive power error in the meridional direction or the refractive power error in the sagittal direction is −0.12 D or more and +0.12 D or less, and takes a value lower than a value of the other refractive power error. 4. The spectacle lens of claim 1 , wherein the refractive power error in the meridional direction or the refractive power error in the sagittal direction takes a value obtained by performing ray tracing at a finite distance. 5. A method for designing a spectacle lens that includes: a first area that causes light rays incident on an object-side face of the lens to exit from an eyeball-side face of the lens and to converge at a predetermined position A on a retina of a wearer; and a plurality of second areas configured to cause light rays to converge at a position B on the object side or a position C on the distal side relative to the position A, the method including: setting, in the first area in a peripheral area of the spectacle lens that is a radius range from 4.5 mm to 25 mm of a lens center, a refractive power error in a meridional direction and a refractive power error in a sagittal direction to values that cause light rays to converge in a direction extending from a vicinity of the position A toward the position B if the second areas cause the light rays to converge at the position B, or to values that cause light rays to converge in a direction extending from the vicinity of the position A toward the position C if the second areas cause the light rays to converge at the position C. 6. The method for designing a spectacle lens according to claim 5 , wherein the second areas are convex areas, and in the first area in the peripheral area, both the refractive power error in the meridional direction and the refractive power error in the sagittal direction are −0.25 D or more.
Assignees
Inventors
Classifications
Myopia progression prevention · CPC title
Methods of designing ophthalmic lenses · CPC title
- G02C7/022Primary
Ophthalmic lenses having special refractive features achieved by special materials or material structures (G02C7/049 takes precedence) · CPC title
- G02C7/06Primary
bifocal; multifocal {; progressive (G02C7/041 takes precedence)} · CPC title
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Frequently asked questions
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- What does patent US12007626B2 cover?
- An object is to not lose an effect of suppressing the progression of myopia or hyperopia even in a peripheral area of a spectacle lens. A spectacle lens and a technology related thereto are provided, the spectacle lens including: a first area that causes light rays incident on an object-side face of the lens to exit from an eyeball-side face of the lens and to converge at a predetermined positi…
- Who is the assignee on this patent?
- Hoya Lens Thailand Ltd
- What technology area does this patent fall under?
- Primary CPC classification G02C7/022. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jun 11 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).