Contact lens manufacturing method
US-2019217561-A1 · Jul 18, 2019 · US
Apparatuses and methods for multistage molding of lenses
US11826973B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11826973-B2 |
| Application number | US-202217839218-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 13, 2022 |
| Priority date | Nov 6, 2019 |
| Publication date | Nov 28, 2023 |
| Grant date | Nov 28, 2023 |
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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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Abstract
Official abstract text for this publication.
Apparatuses and methods for multistage molding of contact lenses containing low oxygen permeable components or oxygen impermeable components. Components may be embedded within a contact lens by forming a device on a polymer substrate, molding a spacer onto a male mold, bonding the device to the spacer, removing the polymer substrate, and molding the remainder of the contact lens.
First claim
Opening claim text (preview).
What is claimed is: 1. An apparatus for molding a contact lens, the apparatus comprising: a housing; at least one female mold insert having a female molding surface and a back surface opposite the female molding surface; a male mold having a male molding surface; and a compression spring or a wave washer, wherein the compression spring or the wave washer resides between the back surface of the at least one female mold insert and the housing; wherein the male molding surface of the male mold mates with the female molding surface of the at least one female mold insert while the at least one female mold insert resides within the housing. 2. The apparatus of claim 1 , wherein the at least one female mold insert is soft, flexible, or deformable. 3. The apparatus of claim 1 , wherein the at least one female mold insert is rigid. 4. The apparatus of claim 1 , wherein the at least one female mold insert is a first female mold insert, the apparatus further comprising: a second female mold insert; wherein the male mold mates with the second female mold insert while the second female mold insert resides within the housing. 5. The apparatus of claim 4 , wherein: the first female mold insert is soft, flexible, or deformable; and the second female mold insert is soft, flexible, or deformable. 6. The apparatus of claim 4 , wherein: the first female mold insert is soft, flexible, or deformable; and the second female mold insert is rigid. 7. The apparatus of claim 4 , wherein: the first female mold insert is rigid; and the second female mold insert is rigid. 8. The apparatus of claim 4 : wherein the first female mold insert and second female mold insert each have an inner diameter; and wherein the inner diameter of the first female mold insert is less than the inner diameter of the second female mold insert. 9. The apparatus of claim 1 , wherein the housing is a first housing and the at least one female mold insert is a first female mold insert, the apparatus further comprising: a second housing; and a second female mold insert; wherein the male mold mates with the first female mold insert while the first female mold insert resides within the first housing; and wherein the male mold mates with the second female mold insert while the second female mold insert resides within the second housing. 10. The apparatus of claim 9 , wherein: the first female mold insert is soft, flexible, or deformable; and the second female mold insert is soft, flexible, or deformable. 11. The apparatus of claim 9 , wherein: the first female mold insert is soft, flexible, or deformable; and the second female mold insert is rigid. 12. The apparatus of claim 9 , wherein: the first female mold insert is rigid; and the second female mold insert is rigid. 13. The apparatus of claim 9 : wherein the first female mold insert and second female mold insert each have an inner diameter; and wherein the inner diameter of the first female mold insert is less than the inner diameter of the second female mold insert.
Assignees
Inventors
Classifications
- B29D11/00038Primary
Production of contact lenses · CPC title
Contact lens fitting; Contact lenses for orthokeratology; Contact lenses for specially shaped corneae · CPC title
Contact lenses having special fitting or structural features achieved by special materials or material structures · CPC title
Contact lenses · CPC title
- B29D11/00048Primary
composed of parts with dissimilar composition (B29D11/00057 takes precedence) · CPC title
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Frequently asked questions
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- What does patent US11826973B2 cover?
- Apparatuses and methods for multistage molding of contact lenses containing low oxygen permeable components or oxygen impermeable components. Components may be embedded within a contact lens by forming a device on a polymer substrate, molding a spacer onto a male mold, bonding the device to the spacer, removing the polymer substrate, and molding the remainder of the contact lens.
- Who is the assignee on this patent?
- Innovega Inc
- What technology area does this patent fall under?
- Primary CPC classification B29D11/00038. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Nov 28 2023 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).