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    • 2. 发明授权
    • Multichannel optical rotary joint for well logging usage
    • 用于测井用途的多通道光学旋转接头
    • US4842355A
    • 1989-06-27
    • US217736
    • 1988-07-11
    • Randy GoldDarren E. Smith
    • Randy GoldDarren E. Smith
    • G02B6/28G02B6/32G02B6/36
    • G02B6/2848G02B6/28G02B6/32G02B6/3604
    • An optical rotary joint for use in a well logging cable is set forth in the preferred and illustrated embodiment capable of transferring two or more data streams traveling along two or more optical fiber channels. The rotary joint is constructed with a stationary portion and a coacting rotary portion. A first channel of data is delivered to an optical fiber transmitted coaxially of the stationary and rotary sides of the apparatus, transfer across the rotational plane between the two components being accomplished by opposing centrally located, concentrically arranged, coacting optical lenses. A second data channel transmitted through a second optical fiber is delivered to a lens system which converts the light into a cylinder of light coaxial with the first channel and which surrounds the optical management for the first channel. All channels other than the first channel thus are converted into coaxial hollow cylinders of light. These cylinders of light are transmitted between facing lens systems in the rotary and stationary sides of the apparatus.
    • 在优选和所示实施例中阐述了用于测井电缆的光学旋转接头,其能够传送沿着两个或更多个光纤通道行进的两个或更多个数据流。 旋转接头由固定部和共同旋转部构成。 数据的第一通道被传送到与设备的固定和旋转侧同轴的光纤传输,跨过两个部件之间的旋转平面传递,通过相对中心定位的同心布置的共同作用的光学透镜来实现。 通过第二光纤传输的第二数据信道被传送到透镜系统,该透镜系统将光转换成与第一通道同轴的光的圆筒,并且围绕第一通道的光学管理。 因此,除了第一通道以外的所有通道被转换成同轴的空心圆筒。 这些圆柱形的光在设备的旋转和静止侧面的相对的透镜系统之间传输。