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Rotating head optical transmitter for position measurement system

  • US 20020005944A1
  • Filed: 09/10/2001
  • Published: 01/17/2002
  • Est. Priority Date: 10/13/1998
  • Status: Active Grant
First Claim
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1. An optical transmitter for use with a position location system comprising:

  • a rotating head assembly including a first optical source that generates a first optical beam that is narrow in a first plane and diverges in a known way in an orthogonal plane which is orthogonal to the first plane;

    a rotary power source for providing power to rotate the rotating head assembly at one or more known angular velocities; and

    a signaling unit for emitting a synchronization signal at a specific rotational position of the rotating head assembly.

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