×

Optical alignment means utilizing inverse projection of a test pattern/target

  • US 5,311,568 A
  • Filed: 08/02/1993
  • Issued: 05/10/1994
  • Est. Priority Date: 05/01/1992
  • Status: Expired due to Fees
First Claim
Patent Images

1. A diagnostic imaging system including:

  • a source of penetrative radiation;

    an image intensifier tube having an input screen and an output screen, the input screen disposed to receive radiation from the source, the source and input screen defining a gap therebetween for receiving an object under examination, the output screen producing a visible light image on a face thereof corresponding to radiation received by the input screen;

    a viewing means for viewing the visible light image and converting the light image into a video signal for displaying on an image monitor; and

    a light sampling means positioned relative to the output screen for sampling a portion of the output screen light, said light sampling means comprised of,a first light directing means;

    a light receiving means;

    a light source; and

    an alignment means for positioning the first light directing means and the light receiving means in alignment with the output screen along a first light path and for positioning the first light directing means and the light source in alignment with the output screen along a second light path, said first and second light paths at least partially coincident.

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