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公开(公告)号：US11650126B2
公开(公告)日：2023-05-16
申请号：US17028429
申请日：2020-09-22
发明人： Juan Antonio Quiroga Mellado , José Alonso Fernández , Eduardo Pascual , Sergio Sampedro , Daniel Crespo Vázquez
IPC分类号： G01M11/02 , G01N21/958
CPC分类号： G01M11/0278 , G01N21/958 , G01N2021/9583
摘要： Automatic visual inspection (AVI) systems and methods are disclosed for inspecting transmissive lenses using a plurality of camera poses to provide deflectometric measurements using fringe patterns from at least two points of view. Phase and/or modulation visibility values of the deflectometric measurements are measured for two sensitivities of the patterns taken through an inspection area of the lens from the points of view. Defects are detected based on the phase and/or modulation visibility values at a defect location as compared to at the local area. A defect type is classified to be prismatic, transmissive, lenslet or cosmetic based on the phase and/or modulation visibility values. The defect is localized on the front or back surface of the lens based on the phase and modulation visibility values, and a geometry of the lens orientation. The lens can be invalidated based on defect types, numbers, relative positions and locations.
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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.
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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.
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公开(公告)号：US20230219287A1
公开(公告)日：2023-07-13
申请号：US18184554
申请日：2023-03-15
发明人： Eduardo Pascual , José Alonso Fernández , Ignacio Canga , Juan Antonio Quiroga Mellado , Daniel Crespo Vázquez
IPC分类号： B29D11/00 , G02B1/04 , G02C7/02 , B33Y80/00 , B29C64/386
CPC分类号： B29D11/00009 , G02B1/041 , G02C7/02 , B29D11/00865 , B33Y80/00 , B29C64/386 , B29D11/00951 , B29C64/124
摘要： Systems and methods for lens creations are disclosed. The method includes initiating light transmission from a light source through a diffuser into a container holding resin and a substrate. The light transmission is performed according to an irradiation pattern wherein each point in the resin is illuminated by at least 10% of the diffuser. This causes a lens to be formed. To achieve this illumination, at least 15% of the diffuser receives light from the light source. Further, a diameter of the diffuser is greater than or equal to a diameter of the substrate. The system performing the methods includes a polymerization apparatus and may include a resin conditioning and reservoir apparatus, a metrology unit, a resin drainage apparatus and an optional postcuring apparatus.
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公开(公告)号：US20220090983A1
公开(公告)日：2022-03-24
申请号：US17028429
申请日：2020-09-22
发明人： Juan Antonio Quiroga Mellado , José Alonso Fernández , Eduardo Pascual , Sergio Sampedro , Daniel Crespo Vázquez
IPC分类号： G01M11/02 , G01N21/958
摘要： Automatic visual inspection (AVI) systems and methods are disclosed for inspecting transmissive lenses using a plurality of camera poses to provide deflectometric measurements using fringe patterns from at least two points of view. Phase and/or modulation visibility values of the deflectometric measurements are measured for two sensitivities of the patterns taken through an inspection area of the lens from the points of view. Defects are detected based on the phase and/or modulation visibility values at a defect location as compared to at the local area. A defect type is classified to be prismatic, transmissive, lenslet or cosmetic based on the phase and/or modulation visibility values. The defect is localized on the front or back surface of the lens based on the phase and modulation visibility values, and a geometry of the lens orientation. The lens can be invalidated based on defect types, numbers, relative positions and locations.
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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.
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公开(公告)号：US20230226752A1
公开(公告)日：2023-07-20
申请号：US18183089
申请日：2023-03-13
发明人： Eduardo Pascual , José Alonso Fernández , Ignacio Canga , Juan Antonio Quiroga Mellado , Daniel Crespo Vázquez
IPC分类号： B29C64/124 , G02B1/04 , G02B1/14 , B29C64/393 , B29C64/255 , B29C64/264 , B33Y10/00 , B33Y80/00 , B33Y50/02 , B33Y30/00
CPC分类号： B29C64/124 , G02B1/041 , G02B1/14 , B29C64/393 , B29C64/255 , B29C64/264 , B33Y10/00 , B33Y80/00 , B33Y50/02 , B33Y30/00 , B29K2105/0005
摘要： Systems and methods for lens creations are disclosed. The method includes initiating light transmission from a light source through a diffuser into a container holding resin and a substrate. The light transmission is performed according to an irradiation pattern wherein each point in the resin is illuminated by at least 10% of the diffuser. This causes a lens to be formed. To achieve this illumination, at least 15% of the diffuser receives light from the light source. Further, a diameter of the diffuser is greater than or equal to a diameter of the substrate. The system performing the methods includes a polymerization apparatus and may include a resin conditioning and reservoir apparatus, a metrology unit, a resin drainage apparatus and an optional postcuring apparatus.
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公开(公告)号：US09952448B2
公开(公告)日：2018-04-24
申请号：US14538242
申请日：2014-11-11
发明人： Daniel Crespo Vázquez , José Alonso Fernández , Juan Antonio Quiroga , Andrew John McKenzie , David Mark Ambler
CPC分类号： G02C7/027 , B29C64/135 , B29C64/268 , B29D11/00442 , B29D11/00951 , B33Y10/00 , B33Y50/02 , B33Y80/00
摘要： A method that adds material selectively to a lens substrate and is used to produce a customized eyewear lens with optical power that is discernibly different from the optical power of the lens substrate. The method involves obtaining the lens substrate, calculating and generating an added material design to convert the lens substrate's optical power to a desired optical power for the customized eyewear lens, contacting the lens substrate with a bulk source of flowable radiation-polymerizable material, and irradiating the material with radiation that is controlled for wavelength range, energy and spatial distribution to polymerize the radiation-polymerizable material only in a selected area according to the added material design. The method does not require the use of external shaping structures to form the customized lens on the lens substrate, and the added material is integrally bonded to the substrate.
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公开(公告)号：US09933632B2
公开(公告)日：2018-04-03
申请号：US14226686
申请日：2014-03-26
发明人： Andrew J. McKenzie , David Mark Ambler , Daniel Crespo Vázquez , Jose Alonso Fernández , Juan Antonio Quiroga
CPC分类号： G02C7/04 , B29C64/135 , B29C64/268 , B29D11/00442 , B29D11/00951 , B29L2011/0041 , B33Y80/00 , G02B1/12 , G02B27/0012 , G02C7/049
摘要： An additive processing method is used to produce a customized eyewear lens by selectively building layers of radiation-polymerized material onto a lens substrate that has optical power properties discernibly different from the optical properties of the customized eyewear lens. The method involves obtaining the lens substrate, calculating the modifications needed to convert the lens substrate's properties to the desired set of properties of the customized lens, generating an additive layer design to achieve the calculated modifications, and identifying at least one control point for confirmation or revision of the additive layer design. The method further involves applying liquid layers of radiation-polymerizable material to the lens substrate and irradiating the liquid layers in selected areas with controlled radiation such that the material is only polymerized and the additive layer is only formed in the select areas irradiated, according to the additive layer design.
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公开(公告)号：US20160377886A1
公开(公告)日：2016-12-29
申请号：US14748134
申请日：2015-06-23
IPC分类号： G02C7/08 , G02F1/13 , G02F1/137 , G02C13/00 , G02F1/1334
CPC分类号： G02C7/083 , G02C7/022 , G02C7/08 , G02C7/081 , G02C13/001 , G02C2202/12 , G02C2202/14 , G02C2202/16 , G02F1/132 , G02F1/1334 , G02F1/137 , G02F2001/13775
摘要： A rewritable and freezable lens and method for manufacturing thereof are disclosed. This lens includes at least one active element that has optical properties that can be written, frozen and rewritten into new values at least twice. Rewritable and freezable lenses comprising active index polymer dispersed liquid crystal materials are disclosed. In-situ re-adaptation of spectacle and contact lenses is possible at the point of sale. In-vivo re-adaptation of intraocular lenses in the doctor's room is feasible, avoiding further surgery.
摘要翻译： 公开了一种可重写和可冷冻透镜及其制造方法。 该透镜包括至少一个活性元件，其具有光学特性，其可被写入，冻结并重写为新值至少两次。 公开了包含活性指数聚合物分散液晶材料的可重写和可冷冻透镜。 眼镜和隐形眼镜的现场重新适应在销售点是可能的。 医生室内的眼内镜片的体内重新适应是可行的，避免进一步的手术。
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