Inventor

LEHUREAU JEAN-CLAUDE

FR71 patents

⚠️ This page may combine multiple inventors who share the name “LEHUREAU JEAN-CLAUDE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LEHUREAU JEAN-CLAUDE

THOMSON CSF

Illumination device and application thereof to the illumination of a transmissive screen

Method for the manufacture of planar magnetic heads by making cavities in a non-magnetic wafer

Endless magnetic tape video recorder/player with head centering means

Thermo-optic information writing process and information support for implementing this process

Optical recording medium with a diffraction grating layer

Optical system for the reproduction of color video images

Device for the projection of images

Matrix device with magnetic heads, notably in thin layers

Thin layer magnetic read/write head

Anti-chipping recording disc, reading method and recording head

Polarization beam splitter

Color display device in which the area of a spherical lens equals the area of a set of RGB sub-pixels

Optical storage method and device for storing and reading digital information

Back-projection display system and method for making a back-projection mirror

Device for optically reading optical recording medium

Display panel with compensation by holographic birefringent films

Thermo-magnetic recording head

Stigmatic optical device and an optical recording head equipped with said device

UHF phase shifter and application to an array antenna

Device for reading oblong segments of an advancing storage medium

Quantum encryption device

Liquid crystal optical polarization separator with parrallel alignment on one substrate, perpendicular on other

Protected optical disc comprising a flexible closure element

Protected optical disc

Holographic projection screen and method of production

Magnetic recording/reading head

Matrix magnetic recording/reading head

Method of reading recording data and a read system

System for reading optical disks and optical disks readable by this system

Liquid crystal matrix control employing doped semiconductor pixel electrode surrounded by undoped channel region

Device for the display of color images

Reader for optical recording medium

Apparatus for generating a magnetic biasing field for recording in a magneto-optical recording medium

Static magnetic reading head having a plurality of elementary heads

THOMSON BRANDT

Optical focussing sensor

Optical read-out system including asymetrical beam intensity and four detector cells

Optical focussing device

Device for the optical read-out of a diffractive track belonging to a data carrier in the form of a disc or tape

Optical reader for information discs equipped with means for automatic access to the information

Optical device for projecting a radiation beam onto a data carrier

Data carrier optically readable by transmission and method of manufacturing such a data carrier

Data carrier optically read out by transmission, and method of manufacturing said data carrier

Thermosensitive data-carrier designed for the recording of information and a method of recording information on such a data-carrier

Thermosensitive data-carrier designed for the recording of information and a method of recording information on such a data-carrier

System for automatically correcting the duty factor of the carrier wave arising from reading-out a data carrier

Automatic optical focusing device

THALES SA

Method and device for protecting an aircraft against clear air turbulence

Vibrating mass gyro

BRICOT CLAUDE

Optical focussing device

THOMSON MULTIMEDIA SA

Matrix display addressing device