Abstract: A optical storage medium is provided, comprising a main substrate, an information surface being associated with the main substrate, and at least one compensating layer. The compensating layer may change a phase and/or amplitude of a propagating electromagnetic wavefront according to a first optical transfer function so that the optical storage medium may be read or recorded by a detector/emitter being pre-set to read or record information at an information surface through a medium changing the phase and/or amplitude of a propagating wavefront according to a predetermined optical transfer function being different from the first optical transfer function. The compensating layer may optically reduce a spot size of a light beam incident on the information surface, and/or compensate for aberrations caused by a first distance being different from a predetermined distance. The substrate may be non-transparent and/or thinner than standard substrates. Methods of making such media are also provided.

Abstract: A device and method for processing a substrate, wherein a flexible force absorbing means is provide in at least a part of a tool plan and/or a reaction plan, so as to locally absorbing the forces applied by the planes. The flexible force absorbing mean having spring-like properties such that it is adapted to be elastically deformed when the tool plan and the reaction plan are pressed against each other.

Abstract: A method of manufacturing at least a part of a metal container where a relief, e.g. a hologram with a diffracting optical element, is being replicated in the surface of a soft layer of a metallic substrate and subsequently the surface relief is covered with a transparent layer. The transparent layer stabilises the soft layer of the metallic substrate and thereby protects the relief. The metallic substrate is subsequently formed into a metal container.