Abstract: The object of the invention relates to a method for scanning with an optical beam (50) using a first acousto-optic deflector (15, 15?) having an optical axis along a Z-axis and at least one acousto-optic crystal layer (14), involving directing the optical beam (50) in the first acousto-optic deflector (15, 15?), and deflecting the optical beam (50) along an X-axis perpendicular to the Z-axis by means of the first acousto-optic deflector (15, 15), during which generating a plurality of acoustic chirp signals (30) in the at least one acousto-optic crystal layer (14) of the acousto-optic deflector (15, 15?) by—generating a first acoustic chirp signal (30a) having a duration of ? in the acousto-optic crystal layer (14), then—generating a second acoustic chirp signal (30b) in the acousto-optic crystal layer (14) within a ? period of time counted from the start of the generation of the first acoustic chirp signal (30a).

Abstract: Methods and devices in a cellular radio system for handling repeated handovers of a user equipment between a pair of cells is provided. It is determined if the user equipment is in one of two states, moving state or stationary state. Based on the determination different actions can be taken. For example threshold optimizations for reducing repeated handover may only be applied to a user equipment determined to be in a stationary state or a user equipment determined to be in a stationary state to can be nailed to the best cell of said pair of cells by not allowing the user equipment to handover to the other cell of said pair of cells.

Abstract: Methods and devices in a cellular radio system for handling repeated handovers of a user equipment between a pair of cells is provided. It is determined if the user equipment is in one of two states, moving state or stationary state. Based on the determination different actions can be taken. For example threshold optimizations for reducing repeated handover may only be applied to a user equipment determined to be in a stationary state or a user equipment determined to be in a stationary state to can be nailed to the best cell of said pair of cells by not allowing the user equipment to handover to the other cell of said pair of cells.

Abstract: A selector fork operating device is provided, for the selective operation of at least two selector forks in a gearbox with a blocking device for blocking a selector fork which is not to be operated and with a driver for driving a selector fork for operation in an axial direction. The selector fork operating device has a bearing axle arranged in the axial direction, which supports at least one blocking part of the blocking device or at least one driving part of the driver. A gearbox, in particular, a motor vehicle gearbox with such a selector fork operating device is also provided.

Abstract: A selector fork operating device is provided, for the selective operation of at least two selector forks in a gearbox with a blocking device for blocking a selector fork which is not to be operated and with a driver for driving a selector fork for operation in an axial direction. The selector fork operating device has a bearing axle arranged in the axial direction, which supports at least one blocking part of the blocking device or at least one driving part of the driver. A gearbox, in particular, a motor vehicle gearbox with such a selector fork operating device is also provided.

Abstract: A circuit system for igniting and lighting a high-pressure discharge lamp, particularly a sodium vapor lamp, comprising a pulse generator for generating signals of at least 1 kHz frequency being a high-frequency DC/AC converter connected to a direct current source and an ignition circuit coupled with the pulse generator including a high-pressure discharge lamp, a condenser connected in parallel to the high-pressure discharge lamp and an inductive member connected to the condenser and the high-pressure discharge lamp and forming a series member with the condenser the ignition circuit is provided with a transformer having a secondary winding connected in series with the inductive member for ensuring high reliability of igniting and for improving the conditions of lighting.

Abstract: An illuminator, particularly for street lighting and industrial applications, comprising a light source including a gas discharge tube, a closed outer vessel for receiving the gas discharge tube, composed from a rear half part and a front half part for forwarding light of the light source, at least the front half part made of light transparent material, light reflecting means covering partly the inner surface of the rear half part of the outer vessel, mechanical fitting elements and electric connecting means, wherein the front half part and the rear half part both are symmetric to at most two symmetry planes and one of the symmetry planes includes the longitudinal axis of the gas discharge tube and constitutes the symmetry plane of the light emitted by the light source. The proposed illuminator require small place and is hardly subject to contamination originated from the environment.