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OPTICAL MEASURING METHOD AND MEASURING APPARATUS FOR EXTERNAL DIMENSION

  • US 20170167852A1
  • Filed: 12/13/2016
  • Published: 06/15/2017
  • Est. Priority Date: 12/15/2015
  • Status: Abandoned Application
First Claim
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1. An optical measuring method for measuring an external dimension of a measured object, the method comprising:

  • providing a light emitter emitting a band-shaped measuring light beam which is configured by parallel light beams, wherein at least a main measuring light beam and a sub measuring light beam are defined in the measuring light beam;

    providing a reflector reflecting the measuring light beam and forming a reflection light beam, wherein at least a main reflection light beam which is reflected light of the main measuring light beam and a sub reflection light beam which is reflected light of the sub measuring light beam are defined in the reflection light beam;

    providing a photoreceiver receiving the reflection light beam are arranged;

    arranging the light emitter and the reflector such that an optical axis of the measuring light beam and an optical axis of the reflection light beam intersect;

    forming the measuring light beam and the reflection light beam inside the same measuring plane;

    placing the measured object in a measuring region on the measuring plane where the main measuring light beam and the sub reflection light beam overlap;

    measuring the external dimension in a main direction of the measured object from a shadow of the measured object appearing in the main reflection light beam; and

    measuring the external dimension in a sub direction of the measured object from the shadow of the measured object appearing in the sub reflection light beam.

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