Christiaan H. F. Velzel

Person

Eindhoven, NL

People

Patents Grantslast 30 patents

Information Patent Grant
Eye surface topographer
- Patent number 11,154,190
- Issue date Oct 26, 2021
- Eaglet Eye B.V.
- Henricus M. M. Kessels
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Optical rotation angle measuring system
- Patent number 10,634,523
- Issue date Apr 28, 2020
- Arges GmbH
- Markus Guggenmos
- G01 - MEASURING TESTING
Information Patent Grant
Optical height detector with coaxial irradiation and image axes and...
- Patent number 5,512,760
- Issue date Apr 30, 1996
- U.S. Philips Corporation
- Joseph L. Horijon
- G01 - MEASURING TESTING
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
Optical scanning apparatus which detects scanning spot focus error
- Patent number 4,850,673
- Issue date Jul 25, 1989
- U.S. Philips Corporation
- Christiaan H. F. Velzel
- G02 - OPTICS
Information Patent Grant
Optical record carrier scanning apparatus with scanning beam focus...
- Patent number 4,800,547
- Issue date Jan 24, 1989
- U.S. Philips Corporation
- Henricus M. M. Kessels
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical transmission system having reduced modal noise
- Patent number 4,427,261
- Issue date Jan 24, 1984
- U.S. Philips Corporation
- Giok D. Khoe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus for optically reading a record carrier and correcting foc...
- Patent number 4,074,314
- Issue date Feb 14, 1978
- U.S. Philips Corporation
- Christiaan H. F. Velzel
- G02 - OPTICS
Information Patent Grant
Apparatus for reading an optically recorded record carrier provided...
- Patent number 4,038,679
- Issue date Jul 26, 1977
- U.S. Philips Corporation
- Gijsbertus Bouwhuis
- G11 - INFORMATION STORAGE
Information Patent Grant
Record carrier on which information is stored in an optically reada...
- Patent number 3,999,008
- Issue date Dec 21, 1976
- U.S. Philips Corporation
- Gijsbertus Bouwhuis
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for optically reading a record carrier by means of an aut...
- Patent number 3,992,575
- Issue date Nov 16, 1976
- U.S. Philips Corporation
- Christiaan Hendrik Frans Velzel
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
IMPROVED EYE SURFACE TOPOGRAPHER
- Publication number 20200138286
- Publication date May 7, 2020
- Eaglet Eye B.V.
- Henricus M.M. Kessels
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
OPTICAL ROTATION ANGLE MEASURING SYSTEM
- Publication number 20190145799
- Publication date May 16, 2019
- Arges GmbH
- Markus Guggenmos
- G01 - MEASURING TESTING

Christiaan H. F. Velzel

Person

Patents Grantslast 30 patents

Eye surface topographer

Optical rotation angle measuring system

Optical height detector with coaxial irradiation and image axes and...

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

Optical scanning apparatus which detects scanning spot focus error

Optical record carrier scanning apparatus with scanning beam focus...

Optical transmission system having reduced modal noise

Apparatus for optically reading a record carrier and correcting foc...

Apparatus for reading an optically recorded record carrier provided...

Record carrier on which information is stored in an optically reada...

Apparatus for optically reading a record carrier by means of an aut...

Patents Applicationslast 30 patents

IMPROVED EYE SURFACE TOPOGRAPHER

OPTICAL ROTATION ANGLE MEASURING SYSTEM