-
公开(公告)号：US20240310654A1
公开(公告)日：2024-09-19
申请号：US18605217
申请日：2024-03-14
摘要： Optimizing visual performance of a spectacle lens using metrics of visual performance includes selecting one or more metrics of visual performance for the lens. Creating functions of the metrics of visual performance, each having a function value that decreases as a values of the metrics of visual performance increase. Creating a merit function for lens optimization, the merit function having a main term that contains a weighted sum of functions that decrease as the metrics of visual performance increase, the weighted sum of functions including a set of viewing directions or a set of points with a one-to one correspondence with the set of viewing directions. Minimizing the merit function to optimize lens surfaces. Then designing an optimal lens having the optimized lens surfaces to optimize visual performance.
-
公开(公告)号：US11609437B2
公开(公告)日：2023-03-21
申请号：US17091786
申请日：2020-11-06
摘要： Configuring ophthalmic lenses that reduce oblique aberrations based on a wearer's accommodative demand values is disclosed. The accommodative demand values include A_(rel−) and A_(rel+) depend on object vergence L. The accommodative demand values are considered to and ensure no or reduced eye strain to the wearer. An improved merit function Φ′ is calculated based on the accommodative demand values. In the calculation, accommodative term A is a smooth and continuous function of both the object distance L and the spherical component of the power error. This ensures the accommodative demand values are well below maximum relative accommodations available to the wearer to prevent eye fatigue. The calculation may also include a smooth and continuous thresholding function ƒ that optimizes the merit function. The calculation may also include evaluation of the power error associated with various object vergencies for every direction of sight.
-
公开(公告)号：US20220146858A1
公开(公告)日：2022-05-12
申请号：US17091786
申请日：2020-11-06
摘要： Configuring ophthalmic lenses that reduce oblique aberrations based on a wearer's accommodative demand values is disclosed. The accommodative demand values include A_(rel−) and A_(rel+) depend on object vergence L. The accommodative demand values are considered to and ensure no or reduced eye strain to the wearer. An improved merit function Φ′ is calculated based on the accommodative demand values. In the calculation, accommodative term A is a smooth and continuous function of both the object distance L and the spherical component of the power error. This ensures the accommodative demand values are well below maximum relative accommodations available to the wearer to prevent eye fatigue. The calculation may also include a smooth and continuous thresholding function ƒ that optimizes the merit function. The calculation may also include evaluation of the power error associated with various object vergencies for every direction of sight.
-
公开(公告)号：US11796836B2
公开(公告)日：2023-10-24
申请号：US18170355
申请日：2023-02-16
摘要： Configuring ophthalmic lenses that reduce oblique aberrations based on a wearer's accommodative demand values is disclosed. The accommodative demand values include A_(rel−) and A_(rel+) depend on object vergence L. The accommodative demand values are considered to and ensure no or reduced eye strain to the wearer. An improved merit function Φ′ is calculated based on the accommodative demand values. In the calculation, accommodative term A is a smooth and continuous function of both the object distance L and the spherical component of the power error. This ensures the accommodative demand values are well below maximum relative accommodations available to the wearer to prevent eye fatigue. The calculation may also include a smooth and continuous thresholding function ƒ that optimizes the merit function. The calculation may also include evaluation of the power error associated with various object vergencies for every direction of sight.
-
公开(公告)号：US20230194894A1
公开(公告)日：2023-06-22
申请号：US18170355
申请日：2023-02-16
摘要： Configuring ophthalmic lenses that reduce oblique aberrations based on a wearer's accommodative demand values is disclosed. The accommodative demand values include A_(rel−) and A_(rel+) depend on object vergence L. The accommodative demand values are considered to and ensure no or reduced eye strain to the wearer. An improved merit function Φ′ is calculated based on the accommodative demand values. In the calculation, accommodative term A is a smooth and continuous function of both the object distance L and the spherical component of the power error. This ensures the accommodative demand values are well below maximum relative accommodations available to the wearer to prevent eye fatigue. The calculation may also include a smooth and continuous thresholding function ƒ that optimizes the merit function. The calculation may also include evaluation of the power error associated with various object vergencies for every direction of sight.
-
-
-
-
搜索结果
5 条记录 (耗时 0.019 秒)
