Geotronics Ab

Koninklijke Philips Corporation N.v.

Mats A Lundqvist

Anders Melin

Magnus Hemmendorff

Jonas Rikard Rehn

Alex S Kosakowski

According to one embodiment, the x-ray apparatus comprises an x-ray source adapted to emit an x-ray beam, a detector adapted to receive the x-ray beam of the x-ray source, wherein the x-ray source is adapted to be moved in relation to a first portion of the x-ray apparatus, wherein the detector is adapted to be moved in relation to a first portion of the x-ray apparatus, the x-ray apparatus further comprising a control unit for controlling the movement of the x-ray source and detector, wherein the x-ray source and the detector are adapted to rotate in relation to a first portion of the x-ray apparatus, wherein further the x-ray beam is directed essentially towards the detector during the movement of the x-ray source and the detector.

Adapting a scan motion in an x-ray imaging apparatus

Protective cabin for ladle lining control

Window panel for a protective cabin for ladle lining control

The invention relates to an arrangement for holding an instrument aligned onto a movable reflector, which may have the form of a cube corner prism. The instrument has a transmitter which transmits a slightly divergent beam of electromagnetic radiation onto the reflector, and a receiver which receives the radiation reflected by the reflector. An optical periphery modulator is placed downstream of the transmitter in the proximity of a lens or in a collimated beam path. The modulator modulates differently various peripheral parts of the transmitted beam of radiation, and if the instrument is not correctly aligned with the prism, the modulator introduces a modulation of low frequency of the radiation received by the receiver in a manner such that the phase position of the modulation is dependent on the direction in which the transmitted beam of radiation deviates from optimal alignment with the prism, and such that the amplitude of the modulation signal is dependent on the extent of this deviation. An electric circuit analyses the phase of the modulation signal and controls an instrument aligning means on the basis of the analyzed phase, so that the reflector lies within a predetermined area of the optical axes of the transmitter and receiver, e.g. in the center of the transmitter lobe.

Arrangement for holding an instrument in alignment with a moving

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Taby, Sweden

Mats A Lundqvist