Abstract:
A Method implemented by computer means for determining a lens blank intended to be used for the manufacturing of a finished optical article, the method comprises: - a virtual volume data determining step, during which virtual volume data are determined based at least on finished optical article data representative of the volume of the finished optical article and over-thickness data representative of over-thickness requirements, the virtual volume data are determined so that the virtual volume defined by the virtual volume data includes the volume of the finished optical article volume of the finished optical article and the over-thickness, - a lens blank determining step, during which a lens blank is determined based on said virtual volume data so as to include the virtual volume defined by the virtual volume data.
Abstract:
The present disclosure relates to devices and processes for fabricating a multi-component optical system. A device is an integral mold comprising an attachment portion and a cup portion having a cavity, and the mold further comprises a first optical component. The cavity of the mold contains additional optical components to form a multi-component optical system blank. Another device is a multi-component optical system blank. A process for fabricating a multi-component optical system blank comprises providing an integral mold comprising a first optical component, adding at least a second optical component, shaping the mold after addition of an optical component, and shaping the resultant blank into an optical system. A further device is a multi-component optical system produced in a process disclosed herein.
Abstract:
A method of data processing for providing an optical lens, the method being implemented by computer means and comprising: -a determining step during which an association between an elements subset of an elements set and a properties collection is determined, the elements subset comprising at least two elements, and -a storing step during which data related to the elements subset and the associated properties collection is stored, the elements subset related data describing the elements subset (SS 1 , SS 2 )from a list of primitive elements and a list of set operators.
Abstract:
The present disclosure relates to devices and processes for fabricating a multi-component optical system. A device is an integral mold comprising an attachment portion and a cup portion having a cavity, and the mold further comprises a first optical component. The cavity of the mold contains additional optical components to form a multi-component optical system blank. Another device is a multi-component optical system blank. A process for fabricating a multi-component optical system blank comprises providing an integral mold comprising a first optical component, adding at least a second optical component, shaping the mold after addition of an optical component, and shaping the resultant blank into an optical system. A further device is a multi-component optical system produced in a process disclosed herein.
Abstract:
A toric ophthalmic lens having substantially zero spherical aberration for a first circular aperture having a first diameter and substantially zero spherical aberration for a second circular aperture having a second diameter, the first diameter being at least 4 mm and the second diameter being at least 3 mm, the first diameter being at least 0.5 mm larger than the second diameter. A series of ophthalmic lenses, each lens comprising a same spherical power as the other lenses in the set, and a unique cylindrical power, each lens comprising (i) a first toric surface, and (ii) a second surface, at least one of the first surface and the second surface being aspheric in a meridian, the lens having substantially zero spherical aberration for all circular optical zone diameters less than 4 mm.
Abstract:
Computer eyewear 110 for reducing the effects of Computer Vision Syndrome (CVS). In one embodiment, the eyewear 110 comprises a frame 115 and two lenses 120. In some embodiments, the frame 115 and lenses 120 have a wrap-around design to reduce air flow in the vicinity of the eyes. The lenses 120 can have optical power in the range, for example, from about +0.1 to +0.25 diopters, or from about +0.125 to +0.25 diopters, for reducing accommodation demands on a user's eyes when using a computer. The lenses 120 can also include prismatic power for reducing convergence demand on a user's eyes when sitting at a computer. The lenses 120 can also include optical treatments such as, for example, a partially transmissive mirror coating, tinting, or anti-reflective coatings. In one embodiment, a partially transmissive mirror coating or tinting spectrally filters (see e.g., FlG. 7B) light to remove spectral peaks 720 in fluorescent or incandescent lighting.
Abstract:
The present invention relates to a method and a computer system and its components for providing spectacles adapted to a future wearer. The method comprises the steps of: inputting in a computer system a first set of data (F1) related to the wearer, comprising at least a prescription of the wearer, inputting in the computer system a second set of data (F2) related to a spectacle frame chosen by the wearer. The computer system is provided with processing means for outputting, on the basis of the first and second sets of data, at least one set of data (S1, S2,..., SN) characterizing a pair of ophthalmic lenses adapted to the wearer and the chosen frame.
Abstract:
A method and system for treating Presbyopia and pre-Presbyopia are provided that do not compromise the wearer's intermediate or distance vision. The system is a lens and a lens series, wherein the power profiles of the lenses are tailored to provide an amount of positive ADD power in the near vision zone that is slightly less than that which is normally required for near vision accommodation, while also providing an amount of negative spherical aberration in the peripheral optical zone. The dynamic ocular factors of the wearer's eye work in conjunction with the positive ADD power provided by the central optical zone and with the effective ADD gained from the negative spherical aberration provided by the peripheral optical zone to induce a minimally discernible amount of blur that is tuned to maximize the wearer's depth of focus.
Abstract:
A set of toric contact lenses, each lens in the set including a posterior surface, an anterior surface, a peripheral zone and a center thickness for each lens. At least one of said surfaces includes a toric optical zone, and each lens in the set having different cylindrical correction. The center thicknesses of the lenses decreasing monotonically with increased cylindrical power.
Abstract:
The present invention is related to a method for designing and making a contact lens which comprises stiffening rib features that provide even distribution of pressure from the lens over the cornea of an eye and/or allows the lens structure to maintain balance of forces for consistent and correct lens orientation on an eye during lens translation or eye lid movement. The invention also provides a soft contact lens comprising stiffening rib features that provides localized directional reinforcements to the lens structure to evenly distribute pressure from the lens over the cornea of an eye and/or to maintain balance of forces for consistent and correct lens orientation on an eye during lens translation or eye lid movement.