Information is stored in an optical element in the form of a glass or plastic body embodied as spectacles lens, spectacles lens blank or spectacles lens semi-finished product. The information in the form of data is stored on or in the glass or plastic body by creating at least one marking with a marking system. The marking can be read by a reading apparatus. The marking system has an interface for reading information individualizing the optical element. The marking is created permanently by the marking system on or in the optical element at a definition point of a local body-specific coordinate system set by two points on or in the optical element. In this body coordinate system, the manufacturer specifies the position of the lens horizontal and/or the far and/or the near and/or the prism reference point.

An eye-tracking apparatus. At least one light source and a plurality of sensors are arranged at a periphery of a first surface of at least one lens. A frame is employed to hold the at least one lens. A processor coupled to the at least one light source and the plurality of sensors is configured to control the at least one light source to emit light towards the user's eye, control the plurality of sensors to sense reflections of the light off a surface of the user's eye, and process sensor data pertaining to the sensed reflections to determine a gaze direction of the user's eye.

An eye-tracking apparatus. At least one light source and a plurality of sensors are arranged at a periphery of a first surface of at least one lens. A frame is employed to hold the at least one lens. A processor coupled to the at least one light source and the plurality of sensors is configured to control the at least one light source to emit light towards the user's eye, control the plurality of sensors to sense reflections of the light off a surface of the user's eye, and process sensor data pertaining to the sensed reflections to determine a gaze direction of the user's eye.

The supply systems for providing spectacle ophthalmic lenses have improved efficacy, in particular with respect to lens blank picking performance and/or lens manufacturing performance.

A device for mounting a leap block capable of automatically adjusting the mounting direction of the leap block comprises a block stand fixedly mounted to one end of a blocking device frame and configured to support a leap block so that the leap block is rotatable in a horizontal direction; the leap block in which a support rotatably supported by the block stand is formed in the center, and a first magnetic body is mounted in one direction; and a leap block mounting unit to which a second magnetic body that couples with the first magnetic body by magnetic force is mounted in one direction, and which rotates in the horizontal direction and couples with the leap block in a fixed direction.

Methods and devices related to spectacle frame recommendation are provided. For configuring a device for frame recommendation, frame data is clustered into a plurality of frame data clusters, and head data is clustered into a plurality of head data clusters. A mapping between the head data clusters and the frame data clusters is performed. For recommendation of a frame to a person, head data of the person is obtained, and a head data cluster is identified based on the head data. Based on the identified head data cluster and the mapping, a frame data cluster is selected which forms the basis for the recommendation.

Various aspects of the subject technology relate to systems, methods, and machine-readable media for virtual fitting of items such as spectacles and/or spectacle frames. A user interface for virtual fitting may be implemented at a server or at a user device, and utilize three-dimensional information for the user and three-dimensional information for each frame, with frame information stored in a frame database, to identify and/or recommend frames that are likely to fit the user. Fit information can be provided for a group of frames or for each individual frame selected by the user. The fit information can be provided with a static image of the frames and/or within a virtual try-on operation in which the frames are virtually placed on a real-time image of the user.

An eye imaging device including a housing with an opening that can be in contact with a head of an observer, a first photographic optical system arranged in the housing and configured to image a left eyeball of the observer from a side, a second photographic optical system arranged in the housing opposite to the first photographic optical system and configured to image a right eyeball of the observer from a side, a third photographic optical system arranged slidable in the housing in a direction in which the first photographic optical system and the second photographic optical system face each other and configured to image the left eyeball and the right eyeball of the observer from a front, and a storage unit configured to store images captured by the first photographic optical system, the second photographic optical system, and the third photographic optical system is provided.

A system for customization of a photochromic article (14) includes a container (12) having an interior (28). At least one actinic radiation source (34) is located in the interior (28) of the container (12). At least one deactivation radiation source (36) is located in the interior (28) of the container (12). A method of customizing a photochromic article (14) includes inserting a photochromic article (14) having at least one non-thermally reversible photochromic material into a container (12) having at least one actinic radiation source (34) and actuating the at least one actinic radiation source (34) to activate the at least one non-thermally reversible photochromic material.

Techniques are described for applying an edge sealant to the edge of a multi-layer optical device. In particular, embodiments provide an apparatus that performs a precision measurement of the perimeter of an eyepiece, applying the edge sealant (e.g., polymer) based on the precision-measured perimeter, and subsequently cures the edge sealant, using ultraviolet (UV) light that is directed at the edge sealant. The curing process may be performed within a short time following the application of the edge sealant, to ensure that any wicking of the edge sealant between the layers of the eyepiece is controlled to be no greater than a particular depth tolerance. In some examples, the edge sealant is applied to the optical device prevent, or at least reduce, the leakage of light from the optical device, and also to ensure and maintain the structure of the multi-layer optical device.