GB1149374A – Improvements in and relating to the recording of ultrasonic vibrations
– Google Patents
GB1149374A – Improvements in and relating to the recording of ultrasonic vibrations
– Google Patents
Improvements in and relating to the recording of ultrasonic vibrations
Info
Publication number
GB1149374A
GB1149374A
GB28771/65A
GB2002565A
GB1149374A
GB 1149374 A
GB1149374 A
GB 1149374A
GB 28771/65 A
GB28771/65 A
GB 28771/65A
GB 2002565 A
GB2002565 A
GB 2002565A
GB 1149374 A
GB1149374 A
GB 1149374A
Authority
GB
United Kingdom
Prior art keywords
reflected
light
screen
radiation
laser
Prior art date
1965-05-12
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.)
Expired
Application number
GB28771/65A
Inventor
Dennis Gabor
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.)
CBS Broadcasting Inc
Original Assignee
Columbia Broadcasting System Inc
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.)
1965-05-12
Filing date
1965-05-12
Publication date
1969-04-23
1965-05-12
Application filed by Columbia Broadcasting System Inc
filed
Critical
Columbia Broadcasting System Inc
1965-05-12
Priority to GB28771/65A
priority
Critical
patent/GB1149374A/en
1966-05-10
Priority to US548939A
priority
patent/US3869904A/en
1966-05-11
Priority to DE19661547298
priority
patent/DE1547298B2/en
1966-05-11
Priority to NL6606459A
priority
patent/NL6606459A/xx
1969-04-23
Publication of GB1149374A
publication
Critical
patent/GB1149374A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
230000005855
radiation
Effects
0.000
abstract
6
230000003287
optical effect
Effects
0.000
abstract
3
239000011248
coating agent
Substances
0.000
abstract
1
238000000576
coating method
Methods
0.000
abstract
1
230000001427
coherent effect
Effects
0.000
abstract
1
230000000694
effects
Effects
0.000
abstract
1
239000012530
fluid
Substances
0.000
abstract
1
238000001093
holography
Methods
0.000
abstract
1
239000007937
lozenge
Substances
0.000
abstract
1
230000005499
meniscus
Effects
0.000
abstract
1
238000000034
method
Methods
0.000
abstract
1
238000002604
ultrasonography
Methods
0.000
abstract
1
Classifications
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J31/00—Cathode ray tubes; Electron beam tubes
H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
H01J31/49—Pick-up adapted for an input of electromagnetic radiation other than visible light and having an electric output, e.g. for an input of X-rays, for an input of infrared radiation
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
G—PHYSICS
G01—MEASURING; TESTING
G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
G01H9/002—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means for representing acoustic field distribution
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J31/00—Cathode ray tubes; Electron beam tubes
H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
H01J31/495—Pick-up tubes adapted for an input of sonic, ultrasonic, or mechanical vibrations and having an electric output
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S359/00—Optical: systems and elements
Y10S359/901—Acoustic holography
Abstract
1,149,374. Televisions’ light modulators. COLUMBIA BROADCASTING SYSTEM Inc. 10 May, 1966 [12 May, 1965; 7 July, 1965], Nos. 20025/65 and 28771/65. Heading H4F. [Also in Division G2] In ultrasonic camera apparatus, an ultrasonic generator (3) (Fig. 1, not shown) is provided in a fluid medium in a tank (1) containing an object (50) to be viewed and an elastic screen (5) having a radiation reflecting surface and being matched to the wave impedance of the medium, and there is further provided, external to the tank, a source of laser light means for directing the radiation on to the surface, and means utilizing the Doppler effect for converting the radiation reflected from the surface into a viewable image. The laser beam is split so that a portion thereof is reflected from the screen (5) while the remainder is superimposed on the reflected portion in such a manner that the radiation reflected from at least part of the surface is in phase quadrature with the superimposed radiation so as to convert the frequency variation imparted by the surface to the reflected radiation into amplitude variation. An image of the screen is formed by the two superimposed portions of the laser beam, and the image is scanned by at least one photo-cell (12) point-by-point, the output of the cell going into an A.C. amplifier (52) tuned to the ultrasound frequency. The rectified output of the amplifier is displayed on a cathode ray tube (13) with a memory. The plane screen (5) is preferably replaced by a thin self-supporting part spherical shell (14) (Figs. 4a, 4b, not shown) carrying a specularly reflecting coating. A portion of the laser light is focussed to a point before being thrown on to the mirror (14) by a reflecting prism (15), and is concentrated by the mirror in a lens (9) while the unreflected (or reference) beam is arranged to travel the same optical distance as the reflected beam and to appear to issue from the centre of the mirror (14). The wave fronts of the two beams are spherical and form a system of straight, equidistant lines as their interference pattern. A coherent ultrasonic reference beam is provided by a second ultrasonic generator (18). The optical reference wave may be adjusted so as to be the equivalent of the sound reference wave, and will then act in the same way as the optical reference wave used in the reconstruction process in light holography to form an image which is magnified by the lens (9) and which can be explored in depth by a scanning system (Figs. 5a, 5b, 5c, not shown). In order to utilize the laser power more fully, only a narrow strip of the vibrating screen 14 is illuminated at any time, and the screen is scanned by a narrow laser beam. Light from a gas laser 23 is concentrated into a thin flat beam by means of lenses 25, 26. The beam then falls on a polygonal prism 27 rotating so that one face of the polygon crosses the light beam in the time of a light scan. The beam is then split 50-50 by a prism 29, and the transmitted part is focussed near to the centre of a spherical lens formed of two halves having a semi-reflecting layer 33 between them. The part reflected at 33 serves as the reference beam and is returned by a mirror 35 to the layer 33 where it interferes with the returning transmitted beam which has been reflected back by the screen 14. The two beams then fall again on the beam splitter 29 and a suitably magnified image of the interference pattern is thrown on the light collecting guides 21 of the photoelectric elements 12 through scanning apertures 22 in the band 19. The illuminated zone now moves with the apertures 22 and a cylindrical meniscus lens is provided to ensure that the movement of the zone is linear. In another embodiment (Figs. 7a, 7b, not shown) allowing of utilization of ¢ the total light (as opposed to # in the embodiment of Figs. 6a, 6b, 6c), the beam splitting prism 29 is replaced by a lozenge shaped prism (38) and the light reflected thereby is brought, by prisms (39), to the spherical lens and forms the reference beam there. In a further embodiment (Figs. 8a, 8b, not shown) a spot (P) scans the whole of the screen (14).
GB28771/65A
1965-05-12
1965-05-12
Improvements in and relating to the recording of ultrasonic vibrations
Expired
GB1149374A
(en)
Priority Applications (4)
Application Number
Priority Date
Filing Date
Title
GB28771/65A
GB1149374A
(en)
1965-05-12
1965-05-12
Improvements in and relating to the recording of ultrasonic vibrations
US548939A
US3869904A
(en)
1965-05-12
1966-05-10
Ultrasonic cameras
DE19661547298
DE1547298B2
(en)
1965-05-12
1966-05-11
ULTRASONIC CAMERA
NL6606459A
NL6606459A
(en)
1965-05-12
1966-05-11
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
GB28771/65A
GB1149374A
(en)
1965-05-12
1965-05-12
Improvements in and relating to the recording of ultrasonic vibrations
GB2877165
1965-07-07
Publications (1)
Publication Number
Publication Date
GB1149374A
true
GB1149374A
(en)
1969-04-23
Family
ID=26254379
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB28771/65A
Expired
GB1149374A
(en)
1965-05-12
1965-05-12
Improvements in and relating to the recording of ultrasonic vibrations
Country Status (4)
Country
Link
US
(1)
US3869904A
(en)
DE
(1)
DE1547298B2
(en)
GB
(1)
GB1149374A
(en)
NL
(1)
NL6606459A
(en)
Families Citing this family (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US5212571A
(en)
*
1991-11-22
1993-05-18
Advanced Imaging Systems
Ultrasonic holographic imaging apparatus having zoom feature
WO1997021129A1
(en)
*
1995-12-04
1997-06-12
Houston Advanced Research Center
System for scanning confocal image reconstruction from coherent recordings
US6311559B1
(en)
*
1998-03-31
2001-11-06
Suzuki Motor Corporation
Vibration measurement method and apparatus
US6847584B2
(en)
*
2003-06-30
2005-01-25
Bechtel Bwxt Idaho, Llc
Method and apparatus for acoustic imaging of objects in water
JP2014007049A
(en)
*
2012-06-25
2014-01-16
Koito Mfg Co Ltd
Optical system unit and vehicular lighting device
Family Cites Families (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2733597A
(en)
*
1956-02-07
Apparatus for measuring vibrations
US2164125A
(en)
*
1937-06-08
1939-06-27
Sokoloff Sergey
Means for indicating flaws in materials
US2832214A
(en)
*
1954-08-05
1958-04-29
Zeiss Jena Veb Carl
Arrangement for ultrasonic material testing
US3213675A
(en)
*
1961-04-21
1965-10-26
Gen Electric
Pulsed ultrasonic image converter
1965
1965-05-12
GB
GB28771/65A
patent/GB1149374A/en
not_active
Expired
1966
1966-05-10
US
US548939A
patent/US3869904A/en
not_active
Expired – Lifetime
1966-05-11
NL
NL6606459A
patent/NL6606459A/xx
unknown
1966-05-11
DE
DE19661547298
patent/DE1547298B2/en
active
Pending
Also Published As
Publication number
Publication date
US3869904A
(en)
1975-03-11
DE1547298B2
(en)
1971-04-01
NL6606459A
(en)
1966-11-14
DE1547298A1
(en)
1970-07-23
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