Willem G. Opheij

Person

Eindhoven, NL

People

Patents Grantslast 30 patents

Information Patent Grant
Objective lens and scanning device using such an objective lens
- Patent number 6,052,237
- Issue date Apr 18, 2000
- U.S. Philips Corporation
- Willem G. Opheij
- G02 - OPTICS
Information Patent Grant
Optical scanning device using a plurality of scanning spots
- Patent number 5,854,780
- Issue date Dec 29, 1998
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical scanner having symmetry about an oblique divider
- Patent number 5,579,298
- Issue date Nov 26, 1996
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording and/or reproducing apparatus with optical sensing...
- Patent number 5,245,182
- Issue date Sep 14, 1993
- U.S. Philips Corporation
- Gerard E. Van Rosmalen
- G11 - INFORMATION STORAGE
Information Patent Grant
Planar optical scanning head having deficiency-correcting grating
- Patent number 5,204,516
- Issue date Apr 20, 1993
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical device determining the position and orientation of an objec...
- Patent number 5,191,221
- Issue date Mar 2, 1993
- U.S. Philips Corporation
- Gerard E. Van Rosmalen
- G11 - INFORMATION STORAGE
Information Patent Grant
Planar optical scanning head with concentric diffraction gratings
- Patent number 5,146,080
- Issue date Sep 8, 1992
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Device for optically scanning an information plane detecting border...
- Patent number 5,144,131
- Issue date Sep 1, 1992
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Three element grating objective and grating-beam shaper, and optica...
- Patent number 5,068,751
- Issue date Nov 26, 1991
- U.S. Philips Corporation
- Josephus J. M. Braat
- G02 - OPTICS
Information Patent Grant
Optical scanning device including mirror objective having two windo...
- Patent number 5,029,255
- Issue date Jul 2, 1991
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical scanning device, mirror objective suitable for use in said...
- Patent number 4,940,890
- Issue date Jul 10, 1990
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for optically scanning an information plane
- Patent number 4,924,079
- Issue date May 8, 1990
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical scanning device, mirror objective suitable for use in said...
- Patent number 4,924,082
- Issue date May 8, 1990
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical record carrier scanning apparatus providing optoelectronic...
- Patent number 4,918,679
- Issue date Apr 17, 1990
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Memory card comprising an optical memory disc and microelectronic m...
- Patent number 4,868,373
- Issue date Sep 19, 1989
- U.S. Philips Corporation
- Willem G. Opheij
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optical scanning unit with tracking error detection
- Patent number 4,864,118
- Issue date Sep 5, 1989
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical record carrier with surface layer extending to the center o...
- Patent number 4,862,447
- Issue date Aug 29, 1989
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Scanning device for an optical recording and/or reproducing apparatus
- Patent number 4,835,380
- Issue date May 30, 1989
- U.S. Philips Corporation
- Willem G. Opheij
- G02 - OPTICS
Information Patent Grant
Optical scanning apparatus
- Patent number 4,826,270
- Issue date May 2, 1989
- U.S. Philips Corporation
- Willem G. Opheij
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Electronically adjustable position-sensitive radiation detector and...
- Patent number 4,810,871
- Issue date Mar 7, 1989
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical scanning apparatus
- Patent number 4,810,073
- Issue date Mar 7, 1989
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Device for determining a centring error of an optical disc relative...
- Patent number 4,761,776
- Issue date Aug 2, 1988
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for recording and reading information tracks on an optica...
- Patent number 4,546,463
- Issue date Oct 8, 1985
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of recording a digital information signal on a record carrie...
- Patent number 4,473,829
- Issue date Sep 25, 1984
- U.S. Philips Corporation
- Kornelis A. Schouhamer Immink
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for reading an optical record carrier
- Patent number 4,460,990
- Issue date Jul 17, 1984
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for reading and/or writing an optically readable informat...
- Patent number 4,423,496
- Issue date Dec 27, 1983
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical focussing device with inclination detection
- Patent number 4,374,324
- Issue date Feb 15, 1983
- U.S. Philips Corporation
- Gerard E. Van Rosmalen
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for reading an optical radiation-reflecting information c...
- Patent number 4,270,045
- Issue date May 26, 1981
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for reading an optical record carrier having a radiation-...
- Patent number 4,253,019
- Issue date Feb 24, 1981
- U.S. Philips Corporation
- Willem G. Opheij
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for reading an optical radiation-reflecting record carrie...
- Patent number 4,135,207
- Issue date Jan 16, 1979
- U.S. Philips Corporation
- Peter F. Greve
- G11 - INFORMATION STORAGE

Willem G. Opheij

Person

Patents Grantslast 30 patents

Objective lens and scanning device using such an objective lens

Optical scanning device using a plurality of scanning spots

Optical scanner having symmetry about an oblique divider

Optical recording and/or reproducing apparatus with optical sensing...

Planar optical scanning head having deficiency-correcting grating

Optical device determining the position and orientation of an objec...

Planar optical scanning head with concentric diffraction gratings

Device for optically scanning an information plane detecting border...

Three element grating objective and grating-beam shaper, and optica...

Optical scanning device including mirror objective having two windo...

Optical scanning device, mirror objective suitable for use in said...

Apparatus for optically scanning an information plane

Optical scanning device, mirror objective suitable for use in said...

Optical record carrier scanning apparatus providing optoelectronic...

Memory card comprising an optical memory disc and microelectronic m...

Optical scanning unit with tracking error detection

Optical record carrier with surface layer extending to the center o...

Scanning device for an optical recording and/or reproducing apparatus

Optical scanning apparatus

Electronically adjustable position-sensitive radiation detector and...

Optical scanning apparatus

Device for determining a centring error of an optical disc relative...

Apparatus for recording and reading information tracks on an optica...

Method of recording a digital information signal on a record carrie...

Apparatus for reading an optical record carrier

Apparatus for reading and/or writing an optically readable informat...

Optical focussing device with inclination detection

Apparatus for reading an optical radiation-reflecting information c...

Apparatus for reading an optical record carrier having a radiation-...

Apparatus for reading an optical radiation-reflecting record carrie...