Optical scanning outside diameter measuring system without scanning objective lens and measuring method thereof

Optical scanning outside diameter measuring system without scanning objective lens and measuring method thereof

  • CN 100,480,624 C
  • Filed: 10/14/2003
  • Issued: 04/22/2009
  • Est. Priority Date: 10/14/2003
  • Status: Active Grant
First Claim
Patent Images

1. the optical scanning outside diameter measuring method of an object scanning lens free is characterized in that, adopting any two or more light scanning units is one group, constitutes measuring system, the scanning testee;

  • Each light scanning unit is interconnected successively by light source, collimating mirror, scanning mirror, receiving objective, photelectric receiver to be formed, and does not have scanning objective;

    Each unit is relatively or by arbitrarily angled installation;

    If the distance between two scanning mirror reflection kernels or the equivalent central point is l 0, testee is respectively 2 θ

    to light deflection center subtended angle 1, 2 θ

    2, between testee center and two scanning mirror reflection kernels or the equivalent central point between line and scanning mirror reflection kernel or the equivalent central point angle of line be respectively α

    1, α

    2, by measuring l 0, θ

    1, θ

    2, α

    1, α

    2, obtain the testee diameter d in the following manner;

    Be d=2kl 0, wherein, k=1/ (cos α

    1/ sin θ

    1+ cos α

    2/ sin θ

    2).

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