Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6052237 | Objective lens and scanning device using such an objective lens | Josephus J. M. Braat | 2000-04-18 |
| 5854780 | Optical scanning device using a plurality of scanning spots | Jozef Petrus Henricus Benschop | 1998-12-29 |
| 5712841 | Optical unit having a radiation source, a detector and a grating, and scanning device including the optical unit | Pieter A. Schoneveld, Dirk B.J. Samoy | 1998-01-27 |
| 5579298 | Optical scanner having symmetry about an oblique divider | Jozef Petrus Henricus Benschop, Heidrun Steinhauser | 1996-11-26 |
| 5245182 | Optical recording and/or reproducing apparatus with optical sensing of scanning mirror position | Gerard E. Van Rosmalen | 1993-09-14 |
| 5204516 | Planar optical scanning head having deficiency-correcting grating | — | 1993-04-20 |
| 5191221 | Optical device determining the position and orientation of an object, and optical recording and/or reproducing apparatus including the device | Gerard E. Van Rosmalen | 1993-03-02 |
| 5146080 | Planar optical scanning head with concentric diffraction gratings | — | 1992-09-08 |
| 5144131 | Device for optically scanning an information plane detecting border portions of light beam | Henricus M. M. Kessels, Christiaan H. F. Velzel | 1992-09-01 |
| 5068751 | Three element grating objective and grating-beam shaper, and optical scanning device | Josephus J. M. Braat | 1991-11-26 |
| 5029255 | Optical scanning device including mirror objective having two windows at least one having an aspherical surface | Josephus J. M. Braat, Johannes J. Baalbergen, Alexius J. T. Van Sambeeck | 1991-07-02 |
| 4940890 | Optical scanning device, mirror objective suitable for use in said device and optical write and/or read apparatus provided with said device | Josephus J. M. Braat | 1990-07-10 |
| 4924079 | Apparatus for optically scanning an information plane | Peter Coops, Adrianus J. Duijvestijn, Dirk C. Van Eck, Peter De Zoeten | 1990-05-08 |
| 4924082 | Optical scanning device, mirror objective suitable for use in said device and optical write and/or read apparatus provided with said device | Josephus J. M. Braat | 1990-05-08 |
| 4918679 | Optical record carrier scanning apparatus providing optoelectronic positioning of the scanning spot | Louis-Marie H. Cobben | 1990-04-17 |
| 4868373 | Memory card comprising an optical memory disc and microelectronic memory component, and apparatus for transferring information to and from such card | Arie Huijser, Gary E. Thomas | 1989-09-19 |
| 4864118 | Optical scanning unit with tracking error detection | Gerard E. Van Rosmalen, Gerard Van Engelen | 1989-09-05 |
| 4862447 | Optical record carrier with surface layer extending to the center of a substantially circular information track structure therein | — | 1989-08-29 |
| 4835380 | Scanning device for an optical recording and/or reproducing apparatus | Josephus J. M. Braat | 1989-05-30 |
| 4826270 | Optical scanning apparatus | Louis-Marie H. Cobben | 1989-05-02 |
| 4810073 | Optical scanning apparatus | — | 1989-03-07 |
| 4810871 | Electronically adjustable position-sensitive radiation detector and optical systems using same | — | 1989-03-07 |
| 4761776 | Device for determining a centring error of an optical disc relative to the axis of rotation of a turntable supporting the disc | — | 1988-08-02 |
| 4546463 | Apparatus for recording and reading information tracks on an optical record carrier with a beam of radiation | Gerard E. Van Rosmalen | 1985-10-08 |
| 4473829 | Method of recording a digital information signal on a record carrier having a radiation-sensitive information layer, apparatus for carrying out the method, and optical record carrier provided with such a digital information signal | Kornelis A. Schouhamer Immink, Ronaldus Maria Aarts | 1984-09-25 |