Patent ID: 6774945
Filing Date: 2004-08-10
Classification: G02B

Abstract:
An image recording system, comprising:an image recording medium; a lens having an optical axis and located at a first distance along the optical axis from the image recording medium, wherein the lens projects a substantially focused image of an object onto the image recording medium when the object is located at a second distance from the lens along the optical axis; a first light beam apparatus fixed in position relative to the lens, wherein the first light beam apparatus has capability of emitting a first light beam; a second light beam apparatus fixed in position relative to the lens, wherein the second light beam apparatus has capability of emitting a second light beam and wherein the first light beam and the second light beam intersect at a distance equal to the value of the second distance from a plane perpendicular to the optical axis and passing through the center of the lens; a third light beam apparatus fixed in position relative to the lens, wherein the third light beam apparatus has capability of emitting a third light beam; and a fourth light beam apparatus fixed in position relative to the lens, wherein the fourth light beam apparatus has capability of emitting a fourth light beam and wherein the third light beam and the fourth light beam intersect at a distance equal to the value of the second distance from a plane perpendicular to the optical axis and passing through the center of the lens.