Abstract: One embodiment provides an apparatus for displaying an image comprising: a first optical substrate comprising at least one waveguide layer configured to propagate light in a first direction, wherein the at least one waveguide layer of the first optical substrate comprises at least one grating lamina configured to extract the light from the first substrate along the first direction; and a second optical substrate comprising at least one waveguide layer configured to propagate the light in a second direction, wherein the at least one waveguide layer of the second optical substrate comprises at least one grating lamina configured to extract light from the second substrate along the second direction; wherein the at least one grating lamina of at least one of the first and second optical substrates comprises an SBG in a passive mode.

Abstract: The invention refers to a method for provisioning of a network access for a mobile communication device having at least one communication interface. A mobile communication device comprising a secure payment application in a secure environment is provided. Network access from a network operator with the mobile communication device is requested. A payment to the network operator for the requested network access using the secure payment application is conducted. A network access application from the network operator is downloaded and the network access application in the secure environment of the mobile communication device is stored wherein the network access application is used for an authentication of the mobile communication device to the mobile network.

Abstract: The invention refers to a method for provisioning of a network access for a mobile communication device (10) having at least one communication interface. A mobile communication device (10) comprising a secure payment application (15) in a secure environment (12) is provided. Network access from a network operator (20) with the mobile communication device (10) is requested. A payment to the network operator (20) for the requested network access using the secure payment application (15) is conducted. A network access application (16) from the network operator is downloaded and the network access application (16) in the secure environment of the mobile communication device (10) is stored wherein the network access application (16) is used for an authentication of the mobile communication device (10) to the mobile network (30).

Abstract: A connector has a coupling nut rotatable on a body and lockable by means of a locking ring mounted on the nut. When slid axially to its locking position, the locking ring engages splines on both the nut and the body to prevent relative rotation. A circular spring carried in a groove on the nut engages behind a vertical wall on the inner surface of the locking ring to prevent the locking ring being unlocked. The locking ring is unlocked by pushing a release ring axially into the locking ring so that a ramp surface on the release ring pushes the spring in and allows the locking ring to be slid back.