×

Optical system for imaging distortions in moving reflective sheets

  • US 20040057046A1
  • Filed: 02/28/2003
  • Published: 03/25/2004
  • Est. Priority Date: 09/01/2000
  • Status: Active Grant
First Claim
Patent Images

1. An apparatus for measuring the optical distortion in a transmissive reflective sheet comprising:

  • a conveyor receiving and positioning the reflective sheet;

    a light source mounted on a first side of the conveyor, the light source projecting a plurality of images across the conveyor such that the projected images appear on the reflective surface;

    a camera oriented to detect reflected images of the plurality of images;

    a processing circuit coupled to receive the output data from the camera to measure magnification and orientation of the reflected images.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×