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| Number | Title | Issue Date |
| 7413502 | Method for producing ophthalmic lenses and other shaped bodies with optically active surfaces The invention concerns a method for producing ophthalmic lenses that uses plastic blanks in the form of flat, round discs. The outer edge of said plastic blanks is clamped and the desired final surface geometry and surface quality of the front faces of the lens are ... | 08/19/2008 |
| 7281967 | Machine for grinding optical lenses The invention relates to a machine comprising a train of grinding stones (21), mounted to rotate about a first axis (A–A′), a lens support (15), provided with means (37), for rotating the lens (35) about a second axis (B–B′) paral... | 10/16/2007 |
| 7147548 | Grinding and cutting head A grinding and cutting head adapted to be mounted with a rotating disk of a grinding and cutting machine. The head includes a plate having a first surface which mounts at least one carrier. The carrier includes a vertical slot along one side which extends upwardly f... | 12/12/2006 |
| 6749925 | Data carrier The invention relates to different methods for distortion-free production of data carriers having at least in partial areas a transparent plastic layer with a surface structure in the form of a lens structure. The surface structure can be produced by cutting method ... | 06/15/2004 |
| 6227952 | Apparatus for creating a concave surface from a spectacle blank A method for creation of a surface from a rough blank for spectacles is which is suitable for both brittle-hard materials and for plastics uses makes use of a disk-shaped, rotation-symmetrical tool of relatively large diameter, by means of which the mater... | 05/08/2001 |
| 6110017 | Method and apparatus for polishing ophthalmic lenses The invention pertains to an improved method, a lapping tool head and a lens polishing apparatus for carrying out the method, for polishing ophthalmic lenses. The apparatus has a lapping tool head, a flexible membrane covering a lapping portion of the too... | 08/29/2000 |
| 5175961 | Device for supporting a moving part A device for supporting an article 27 such as a lapping tool for polishing lenses is designed to allow limited motion of the article about a central point. The device comprises a base 1, a mount 2 and a bearing between the base and the mount allowing the ... | 01/05/1993 |
| 4333274 | Machine for smoothing and/or polishing lens faces A machine for smoothing and/or polishing lenses comprising a holder which is carried on a slide. The slide is guided for movement in two mutually perpendicular directions, both of which are perpendicular to a main axis of the machine. The slide is moved i... | 06/08/1982 |
| 4135333 | Apparatus for grinding a cylindrical optical lens An apparatus for grinding cylindrical lenses, comprising a frame supporting a motor-driven apparatus in which a vertical driving pin is adapted to be moved parallel to itself, in complex motion, which is substantially non-repetitive. Three separate drive ... | 01/23/1979 |
| 4041649 | Alignment device An alignment device of the type primarily intended for use in combination with an ophthalmic cylinder surfacing machine to insure proper optical axis alignment of the lens blank, to the lap, as it is being ground. The device includes a base member which i... | 08/16/1977 |
