Patent ID: 6313954
Filing Date: 2001-11-06
Classification: G02B,G03G

Abstract:
A corrective, one-piece, rigid or semi-rigid lens that yields substantially undistorted copies of adjacent open book pages presented for xerographic copying or document scanning upon a document support glass of a copier or scanner, comprising:a substantially transparent element for placement within various sizes of open books, said transparent element having a mid-portion that fits within, and contours to, a crease of the open book adjacent a binding thereof, said mid-portion of said transparent element having focal length changing means for changing a focal point of an edge of each adjacent page along said crease, in order to present a substantially non-blurred and undistorted image of said edge of each adjacent page of said open book as it lies upon a document support glass of said copier; andintegral extension arms extending outwardly from said mid-portion to cover a remainder of the open book and hold said pages in place, said substantially transparent element being rigid or semi-rigid, whereby an open book can be pushed downwardly upon said transparent element without deforming same, prior to copying pages thereof.