×

Method and apparatus for positioning a light beam on a holographic media

  • US 5,621,549 A
  • Filed: 08/21/1995
  • Issued: 04/15/1997
  • Est. Priority Date: 10/07/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A positioning system for positioning a laser beam within a select storage region in a holographic storage media, comprising:

  • a first motive device for holding the holographic storage media and moving the surface thereof along a single and linear direction in the plane of the surface of the holographic storage media;

    a first reflective surface for reflecting the laser beam to provide a once redirected beam;

    a second motive device for rotating said first reflective surface about an axis on the surface thereof, the laser beam impinging upon said axis; and

    a collimating device for redirecting said once redirected beam toward the surface of the holographic storage media as a twice redirected beam such that all redirected positions of said twice redirected beam are substantially parallel to each other, the rotation of said first reflective surface causing said twice redirected beam to move along the surface of the holographic storage media in a path on the surface of the holographic storage media and at an angle to said single and linear direction through which said first motive device moves.

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