WO2026093909 - DIFFRACTIVE MULTIFOCAL CONTACT LENS
National phase entry is expected:
Publication Number
WO/2026/093909
Publication Date
07.05.2026
International Application No.
PCT/IB2025/060966
International Filing Date
28.10.2025
Title **
[English]
DIFFRACTIVE MULTIFOCAL CONTACT LENS
[French]
LENTILLE DE CONTACT MULTIFOCALE DIFFRACTIVE
Applicants **
ALCON INC.
Inventors
PI, Ying
NICULAS, Cornelius Daniel
LINDACHER, Joseph Michael
HERRON, Gregory L.
BORJA, David
Priority Data
63/713,148
29.10.2024
US
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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| Number of Pages with Drawings | * |
| Pages of Specification | * |
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International Searching Authority |
EPO
* |
| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
* |
| Type of Assignment |
The Standard Agent's Assignment
* |
| Applicant's Legal Status |
Legal Entity
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| * | |
| * | |
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
* |
| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2560 | |
| EPO | Filing, Examination, Granting | 13331 | |
| Japan | Filing, Examination, Granting | 2399 | |
| South Korea | Filing, Examination, Granting | 2573 | |
| USA | Filing, Examination, Granting | 6540 |
Total:
27,403
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Abstract[English]
Certain aspects of the present disclosure provide a contact lens with a stepped-transition diffractive design. An example contact lens has an optical zone on its anterior or posterior surface. The optical zone has a circular diffractive zone that has a stepped-transition diffractive surface profile that provides at least one first refractive optical element and at least one diffractive optical element and optionally an annular refractive zone comprising a second refractive optical element. The at least one diffractive optical element comprises a plurality of concentric annular transition surface zones surrounding a central circular area of the contact lens. The stepped-transition surface profile has a monotonically increasing surface sagitta (SAG) in a direction radiating from the central axis of the contact lens.[French]
Certains aspects de la présente divulgation concernent une lentille de contact présentant une conception diffractive à transition étagée. Une lentille de contact donnée à titre d'exemple comporte une zone optique sur sa surface antérieure ou postérieure. La zone optique comporte une zone diffractive circulaire présentant un profil de surface diffractif à transition étagée fournissant au moins un premier élément optique réfractif et au moins un élément optique diffractif et facultativement une zone réfractive annulaire comprenant un second élément optique réfractif. Le au moins un élément optique diffractif comprend une pluralité de zones de surface de transition annulaires concentriques entourant une zone circulaire centrale de la lentille de contact. Le profil de surface à transition étagée présente une flèche de surface (SAG) croissant de manière monotone dans une direction partant de l'axe central de la lentille de contact.