Optical waveguides – With optical coupler – Movable coupler
Reexamination Certificate
2005-09-16
2008-09-16
Font, Frank G (Department: 2883)
Optical waveguides
With optical coupler
Movable coupler
C385S027000, C385S032000
Reexamination Certificate
active
07426324
ABSTRACT:
An optical transmission system in a computer tomograph for transmitting modulated optical signals between a first unit and a second unit, the first unit being supported to be rotatable relative to the second unit, comprises: a light guide disposed along a circular or annular track on the first unit; at least one first light coupler connected with the light guide for coupling light into or out of the light guide; at least one second light coupler disposed on the second unit to be movable relative to the light guide for coupling light into or out of the light guide. In order to remove from the light guide surface any contaminating matter that would lead to a high signal attenuation or an interference with transmission, a cleaning unit is provided for removing dirt and dust particles. Furthermore, a sealing of the system is provided by applying, amongst other means, pressurized air or electrostatic filtering.
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Hutterer Rainer
Lohr Georg
Rank Matthias
Schilling Harry
Tartler Thomas
Daffer Kevin L.
Daffer McDaniel LLP
Font Frank G
Schleifring und Apparatebau GmbH
Wong Eric
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