Abstract: Apparatus and methods are described, including providing a temporary progressive lens (20) that is configured for a subject's temporary use, based upon an initial progressive-lens optical design. The lens is composed of a base lens (22) and an attached additional and removable progressive lens part (24) for test purposes. Data that are indicative of suitability of the optical design for activities that are performed by the subject are received, the data being generated during use of the temporary progressive lens by the subject. Based upon the received data, the optical design for a progressive lens for the subject is optimised, and the optimised optical design in output.

Abstract: Apparatus and methods are described including an additional lens (24) made from an amorphous viscoelastic material and having an optical design. A curvature of the additional lens (24) is changed such as to conform with a curvature of abase eyeglasses lens (22), without causing a loss of the optical design of the additional lens (24), by heating the additional lens (24) to a temperature at which a Tan Delta of the amorphous viscoelastic material is between 0.2 and 0.8, and shaping the additional lens (24). Subsequently, the additional lens (24) is adhered to the base eyeglasses lens (22). The optical design of the additional lens (24) is such that, upon being adhered to the base eyeglasses lens (22), the adhered base eyeglasses lens (22) and the additional lens (24) provide a combined lens (20) having a desired optical prescription. Other applications are also described.

Abstract: Apparatus and methods are described including adhering a first lens to a second lens such as to form a combined lens having a given optical design, by placing the first lens and the second lens in respective first and second pressure chambers with an adhesive layer disposed between the first lens and the second lens, bringing a convex surface of the first lens into contact with the adhesive layer, and bringing a concave surface of the second lens into contact with the adhesive layer. Other applications are also described.

Abstract: System for preventing the infringement of intellectual property rights including a searching server for identifying an infringing item in a network, a production server for producing modified copies of IP protected items and a sharing structure for sharing the modified copies over the network. The sharing structure includes a plurality of repositories and a plurality of sharing users. The repositories are mainly storage units storing many copies of the modified copies. The sharing users share the modified copies over the network either by uploading the modified copies from the repositories through to a downloading node across the network, or by directing the downloading node to download directly from the repositories.

Abstract: System for preventing the infringement of intellectual property rights including a searching server for identifying an infringing item in a network, a production server for producing modified copies of IP protected items and a sharing structure for sharing the modified copies over the network. The sharing structure includes a plurality of repositories and a plurality of sharing users. The repositories are mainly storage units storing many copies of the modified copies. The sharing users share the modified copies over the network either by uploading the modified copies from the repositories there through to a downloading node across the network, or by directing the downloading node to download directly from the repositories.