Patent ID: 6011586
Filing Date: 2000-01-04
Classification: H04N

Abstract:
An apparatus for finding an orientation feature of an object, the apparatus comprising:a camera located at a sub-focal-length working distance from the object;a first substrate having a first reflecting surface of a first surface area, the first substrate and the first reflecting surface each including a region that is at least partially light-transmissive;a second substrate having a second reflecting surface in confronting relationship with the first reflecting surface, the second reflecting surface being of a second surface area that is less than the first surface area; anda mechanism utilizing signals obtained from said camera to identify the orientation feature of the object and to determine the orientation of the object, whereinsaid camera, the object, and said first and said second substrates are arranged such that a plurality of nested images of a perimeter of the object are included in a field of view of said camera.