The present disclosure relates to determining visual equipment for a patient or user. In an embodiment, a machine learning-based approach considers the face of a user in context of a database of labeled faces and visual equipment, each of the labeled images reflected the aesthetic value of a proposed visual equipment relative to the face of the patient or user.

An eyeglass lens replacement assembly is revealed. A limiting slot is formed on each side of a frame and a limiting stopper is arranged in the limiting slot. A temple pivot member is mounted in the limiting slot. A lens is mounted to a lens connection portion of the frame and two sides of the lens are inserted into insertion slots of the temple pivot members. Each side of the lens is provided with a positioning dent which is locked with a positioning bulge of the insertion slot. A limiting bulge of a positioning portion pivoted on the temple pivot member is limited in a limiting notch of the lens while a locking recess of the positioning portion is locked and positioned by an inner wall surface of the insertion slot. Thereby the frame, the temple pivot members and the lens are combined with and connected to one another firmly.

Systems and methods are disclosed for generating a 3D computer model of an eyewear product, using a computer system, the method including obtaining an inventory comprising a plurality of product frames; scanning a user's anatomy; extracting measurements of the user's anatomy; obtaining a first model of a contour and/or surface of the user's anatomy, based on the extracted measurements of the user's anatomy; identifying, based on the contour and/or the surface of the user's anatomy, a first product frame among the plurality of product frames; determining adjustments to the first product frame based on the contour and/or the surface of the user's anatomy; generating a second model rendering comprising the adjusted first product frame matching the contours and/or the surface of the user's anatomy.

Modular eyeglass frame system and methods for their use and manufacture. Exemplary frame systems include an eyeglass frame base having a top edge, a removable element having a top edge that substantially matches the top edge of the frame base, and one or more attachment elements operative to removably attach the removable element to the frame base. The frame base includes a first channel and a second channel suitable for partially enclosing a first lens and a second lens; and the removable element includes a first channel and a second channel, each removable element channel being configured such that when the removable element is attached to the frame base, the first and second channels of the frame base align with the first and second channels of the removable element to fully enclose a periphery of the first lens and the second lens. The one or more attachment elements secure the removable element to the frame base such that the two-piece frame system is substantially as durable as a solid one-piece frame.

A computer-implemented method for fitting a spectacle lens, which has a first spectacle lens surface, a second spectacle lens surface, and at least one dioptric power to be obtained, to a spectacle frame with a certain frame edge curve is made available. In the method, a free-form surface formed on a first spectacle lens surface is fitted to the frame edge curve of the spectacle frame. The free-form surface is fitted to the frame edge curve by virtue of the free-form surface and the second spectacle lens surface being optimized with regard to minimizing the difference between the free-form surface edge curve and the frame edge curve and with regard to achieving the at least one dioptric power to be obtained with the spectacle lens.

The invention relates to systems and methods for providing custom-fitted and styled wearable items such as eyewear based on measurements made from a user-provided image that is resized using a predefined reference that includes an image of an actual wearable item. The eyewear may be provided to a user, who wears the eyewear and provides an image of the user wearing the eyewear. The user-provided images may be compared to a predefined reference (e.g., an image of the eyewear) having a known scale and/or dimension. For example, a user-provided image may be overlaid with the predefined reference and resized so that the wearable item worn by the user in the user-provided image matches (the size of) the wearable item in the predefined reference. Because the scale and/or dimensions of the predefined reference are known, one or more measurements associated with the user may be made based on the user-provided image.

A system performs a method for fitting glasses to a person. The system includes an imaging device and a processor. The imaging device obtains an image of the person while wearing an unfitted frame. The processor determines a dimension of the person from the image and determines a dimension for a fitted frame that provides a selected lens-pupil distance for the lens based on the dimension of the person and the specifications of the lens. The unfitted glasses frame is adjusted to obtain the dimensions of the fitted frame.

Formulations for anti-fogging wipes and/or sprays for transparent and reflective surfaces, such as glasses and/or lenses, along with related methods and kits comprising both wet and dry wipes. In some embodiments, a kit may be provided that may comprise a plurality of dual-compartment packages, each of which may contain a wet wipe container/side having a wet wipe treated with an anti-fogging solution and a separate dry wipe container having a dry wipe for use in removing excess cleaning solution from a lens or other transparent or reflective surface that may be prone to fogging.

A cleaning station for an optical element is providing, including: an optical element holder configured to hold the optical element; a first drive configured to rotate the optical element holder around a rotation axis coinciding with an optical axis of the optical element when held by the optical element holder; a cleaning nozzle configured to project a cleaning jet of a cleaning liquid towards the optical element; and a separate drying nozzle configured to project a drying jet towards the optical element, the cleaning nozzle and the drying nozzle being configured to move in order to direct the cleaning jet and the drying jet, respectively, successively to different locations on the optical element.

Disclosed is a method for determining the position of the eye rotation center of a subject's eye including: providing a geometric model of an eye, the eye being modeled with one sphere for the sclera and one ellipsoid for the cornea of the eye, the position of the eye rotation center being the distance between a center of the sclera and an apex of the cornea and being determined based on a set of personal parameters including a first geometric dimension of the eye, each personal parameter distinct from the position of the eye rotation center; determining a value of each personal parameter; and determining a first approximate value of eye position rotation center based on the geometric model using the personal parameters. Also disclosed is a method for calculating a personalized ophthalmic lens for the eye using such center, as well as a device implementing this method.