×

METHOD AND APPARATUS FOR DETECTING DEFECT IN TRANSPARENT BODY

  • US 20170307546A1
  • Filed: 03/29/2017
  • Published: 10/26/2017
  • Est. Priority Date: 04/26/2016
  • Status: Active Grant
First Claim
Patent Images

1. A method for detecting a defect in a transparent body, the method comprising:

  • disposing a transparent body to be examined between a light emitting unit and a light-receiving unit arranged opposite each other, a light-blocking object being arranged between the transparent body and the light-receiving unit; and

    detecting a change in an optical path caused by a defect in the transparent body based on a change in a light ray emitted from the light emitting unit and being incident on the light-receiving unit after passing through the transparent body and the light-blocking object.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×