FLAT LENS MADE FROM LEUCOSAPPHIRE AND METHOD OF MAKING SAID LENS Russian patent published in 2013 - IPC G02B1/02 

FIELD: physics.

SUBSTANCE: flat lens made from leucosapphire is made from a plastically deformed workpiece, wherein the axis of symmetry of the flat lens coincides with the height of the cone of optical axes of the plastically deformed workpiece. The entrance and exit surfaces are flat and perpendicular to the axis of symmetry. The method of making the flat lens involves making a concave-convex workpiece by plastic deformation - bending the plane-parallel plate from the Z crystal cut. The lens is formed by removing an excess layer of material from the workpiece as a plane-parallel plate, perpendicular to the axis of symmetry of the workpiece, which is superposed with the axis of the cone of optical axes, of a given thickness. The entrance surface of the flat lens lies at a distance x<δ from the vertex of the workpiece, where δ is the thickness of the workpiece.

EFFECT: forming a flat converging lens from leucosapphire for extraordinary beams.

2 cl, 2 dwg