Abstract: Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent optical element.

Abstract: The present invention relates to a gateway for connecting a number of incoming analogous and/or digital inputs to a General Packet Radio Service (GPRS) based output. The gateway device comprises: at least one analogous and/or digital data interface for interfacing said inputs, a SIM card, with a specific IP address, an instruction set memory, a wireless transceiver, means for storing collating and managing data, and means for converting input data to GPRS or fixed line data.

Abstract: The present invention relates to a mobile communications network comprising package switched communication ability, the network comprising: one or several mobile stations, a service provider, providing communication with said mobile stations, a user, communicating with said mobile stations, wherein the mobile communications network is arranged to assign said mobile stations with a fixed Internet Protocol (IP) address by means of a server, which is arranged to map a (private) network IP address seamlessly to the public IP address.

Abstract: A method of bonding a transparent optical element to a light emitting device having a stack of layers including semiconductor layers comprising an active region is provided. The method includes elevating a temperature of the optical element and the stack and applying a pressure to press the optical element and the stack together. In one embodiment, the method also includes disposing a layer of a transparent bonding material between the stack and the optical element. The bonding method can be applied to a premade optical element or to a block of optical element material which is later formed or shaped into an optical element such as a lens or an optical concentrator.