Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent SAS
Original Assignee
Compagnie Generale dElectricite SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie Generale dElectricite SAfiledCriticalCompagnie Generale dElectricite SA
Priority to FR6920015ApriorityCriticalpatent/FR2059949A1/fr
Priority to BE751660Dprioritypatent/BE751660A/xx
Priority to NL7008500Aprioritypatent/NL7008500A/xx
Priority to GB1266260Dprioritypatent/GB1266260A/en
Priority to DE19702029809prioritypatent/DE2029809A1/de
Publication of FR2059949A1publicationCriticalpatent/FR2059949A1/fr
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
G03H3/00—Holographic processes or apparatus using ultrasonic, sonic or infrasonic waves for obtaining holograms; Processes or apparatus for obtaining an optical image from them
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves
(AREA)