In a spectacle lens including a permanent mark arranged on a concave surface, a layout mark indicating a predetermined reference position on a convex surface is arranged on the convex surface.

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 and a method for processing, in particular edge processing, an optical lens, wherein the device has a measuring system, a processing system, a loading system, an unloading system, an intermediate conveyor, and a belt conveyor. The loading system is arranged between the measuring system and the processing system. The unloading system is arranged on the opposite side of the processing system. A lens that is to be processed is picked up and oriented at the optical reference point that is determined by the measuring system in order to determine as precisely as possible the blocking point for the subsequent processing. The loading system and unloading system each have a linearly movable swiveling system with linearly movable suction devices arranged therein. The processing system is designed for the simultaneous processing of two lenses.

The invention proposes a blocking calculation module (1) configured to calculate blocking data of an ophthalmic lens member (2) on a blocking element (3) of a blocking station (4), comprising:receiving means (11) configured to receive input data from a remote device, the input data comprising optical data related to the ophthalmic lens member,calculation means (15) configured to calculate the blocking data from the input data, andtransmitting means (17) configured to make the blocking data available to the blocking station.

Optical articles and methods of manufacturing the same are disclosed herein. In one aspect, the methods and optical articles formed include light-blocking compositions applied to optical substrates in accordance with the optical properties of the optical substrate. In another aspect, a method is disclosed in which the light-absorbing compositions are printed onto the optical substrate in the shape and size of the final lens that is to be formed from the optical substrate. In another aspect, the methods and optical articles utilize at least two different light-blocking compositions to achieve desired functionality of the optical article.

A blocking device and method for mounting a leap block to a lens by a lifting/lowering mechanism using a magnet and a wire is described comprising a blocking device housing having a guide; a movable leap block attachment part mounted on the guide of the housing; a spring having a lower end supporting the attachment part and an upper end supporting the blocking device housing, the spring pushing the attachment part downward, so that the attachment part protrudes below the lower end of the blocking device housing; a wire having one end connected to a pulley and the other end connected to the attachment part, so the wire pulling the attachment part upward when the pulley rotates; a leap block attached to the lower end of the attachment part by magnets; and a blocking arm coupled to the housing and to move the housing up and down.

A mandrel for holding and positioning an intraocular lens blank during manufacturing includes a shank portion having a central axis and a lens blank holding section configured to hold the lens blank. The holding section includes a central cavity formed concentrically with the central axis of the mandrel. Projections are formed on a surface of the central cavity and are configured to support a first surface of the lens blank at a fixed distance from the surface of the central cavity. A ring fits within a peripheral portion of the central cavity to hold a second opposing surface of the lens blank. A method for making an intraocular lens using the mandrel includes filling the space formed under the first surface of the lens with a liquid, such as water, freezing the liquid, and then machining and/or milling the second surface of the lens blank.

A method of manufacturing an optical lens including at least one electronic component. The method includes providing a mechanical reference system on an optical lens blank, the optical lens blank being configured to be processed to form the optical lens, providing edging data configured to be used to edge the optical lens blank to form the optical lens, and embedding the at least one electronic component in the optical lens based on edging data and on the mechanical reference system.

Disclosed is a method implemented by a computer, for determining the position of an optical lens member having a surface placed on a lens blocking ring, the blocking ring including a bearing zone arranged to bear at least partially a placed known surface of the optical lens member when the known surface of the optical lens member is placed on the lens blocking ring and hold by a force applied on the optical lens member, the method includes finding a trio of points of the bearing zone that forms a triangle including the projection on the main plane of the point of application of the force; and a position of the optical lens having a virtual contact between the placed known surface and the ring at the location of the trios of points.

A method for producing a spectacle lens, the method including: determining the positions of at least three marks so as to specify the center position of a frame shape on the basis of the at least three marks; making marks at the determined positions; calculating the shape of a non-optical surface of a semifinished lens with respect to the center position when processing the non-optical surface according to a prescription; and processing the non-optical surface into the calculated shape with respect to the center position. When the semifinished lens is viewed in an optical axis direction, the at least three marks include a pair of marks located on a first straight line passing through the center position and a mark located on a second straight line that is orthogonal to the first straight line and passes through the center position.