WO2026138232 - OPTIMIZATION DESIGN METHOD FOR RIGID GAS PERMEABLE CONTACT LENS AND RIGID GAS PERMEABLE CONTACT LENS
National phase entry is expected:
Publication Number
WO/2026/138232
Publication Date
02.07.2026
International Application No.
PCT/CN2025/134577
International Filing Date
13.11.2025
Title **
[English]
OPTIMIZATION DESIGN METHOD FOR RIGID GAS PERMEABLE CONTACT LENS AND RIGID GAS PERMEABLE CONTACT LENS
[French]
PROCÉDÉ DE CONCEPTION D'OPTIMISATION POUR LENTILLE DE CONTACT RIGIDE PERMÉABLE AUX GAZ ET LENTILLE DE CONTACT RIGIDE PERMÉABLE AUX GAZ
[Chinese]
硬性角膜接触镜的优化设计方法以及硬性角膜接触镜
Applicants **
ZHUHAI FITLENS MEDICAL TECHNOLOGY CO., LTD
Inventors
LIU, Yuxiao
HE, Tianrui
Priority Data
202411922106.7
25.12.2024
CN
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CNIPA
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The Standard Agent's Assignment
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Legal Entity
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Chapter I
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Send the Letters Patent by Courier
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1872 | |
| EPO | Filing, Examination, Granting | 14358 | |
| Japan | Filing, Examination, Granting | 2368 | |
| South Korea | Filing, Examination, Granting | 2515 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
25,853
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Abstract[English]
The present disclosure relates to an optimization design method for a rigid gas permeable contact lens and a rigid gas permeable contact lens. The method comprises: acquiring a lens front surface original included angle, the lens front surface original included angle being used for representing an included angle, determined on the basis of lens prescription parameters, between two adjacent arc segments on the front surface of a lens; determining whether the lens front surface original included angle needs to be optimized; and if the lens front surface original included angle needs to be optimized, dividing at least one target arc segment among the two adjacent arc segments participating in forming the lens front surface original included angle into a first number of sub-arc segments, and allocating the width and sagittal height of the target arc segment to the first number of sub-arc segments with the objectives that a lens front surface new included angle is closer to 180° than the lens front surface original included angle, the width of any sub-arc segment is greater than or equal to a first threshold, and an included angle between any two adjacent sub-arc segments ranges from 170° to 190°. Therefore, by optimizing the lens front surface original included angle of the rigid gas permeable contact lens, the comfort can be improved.[French]
La présente divulgation concerne un procédé de conception d'optimisation pour lentille de contact rigide perméable aux gaz ainsi qu'une lentille de contact rigide perméable aux gaz. Le procédé consiste à : acquérir un angle inclus d'origine de surface avant de lentille, l'angle inclus d'origine de surface avant de lentille étant utilisé pour représenter un angle inclus déterminé sur la base de paramètres de prescription de lentille et formé entre deux segments d'arc adjacents sur la surface avant d'une lentille ; déterminer si l'angle inclus d'origine de surface avant de lentille doit être optimisé ; et si l'angle inclus d'origine de surface avant de lentille doit être optimisé, diviser au moins un segment d'arc cible parmi les deux segments d'arc adjacents participant à la formation de l'angle inclus d'origine de surface avant de lentille en un premier nombre de sous-segments d'arc, et distribuer la largeur et la hauteur sagittale du segment d'arc cible au premier nombre de sous-segments d'arc de façon à ce qu'un nouvel angle inclus de surface avant de lentille soit plus près de 180° que l'angle inclus d'origine de surface avant de lentille, que la largeur de n'importe quel sous-segment d'arc soit supérieure ou égale à un premier seuil, et qu'un angle inclus entre deux sous-segments d'arc adjacents quelconques soit compris entre 170° et 190°. Par conséquent, l'optimisation de l'angle inclus d'origine de surface avant de lentille de la lentille de contact rigide perméable aux gaz permet d'augmenter le confort.[Chinese]
本公开涉及一种硬性角膜接触镜的优化设计方法以及硬性角膜接触镜。方法包括：获取镜片前表面原夹角，镜片前表面原夹角用于表征基于镜片处方参数而确定的镜片前表面上两个相邻弧段之间的夹角；判断镜片前表面原夹角是否需要优化；若镜片前表面原夹角需要优化，则将参与形成镜片前表面原夹角的两个相邻弧段中的至少一个目标弧段拆分为第一数量个子弧段，并以使镜片前表面新夹角相比于镜片前表面原夹角更接近180°、任意一个子弧段的宽度大于或等于第一阈值且任意两个相邻的子弧段之间的夹角在170°～190°之间为目标，将目标弧段的宽度和矢高分配给第一数量个子弧段。由此，通过对硬性角膜接触镜的镜片前表面原夹角进行优化设计，可以提升舒适性。