FR2578999A1 - Device for varying the focus of an acoustic lens - Google Patents

Device for varying the focus of an acoustic lens Download PDF

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Publication number
FR2578999A1
FR2578999A1 FR8503956A FR8503956A FR2578999A1 FR 2578999 A1 FR2578999 A1 FR 2578999A1 FR 8503956 A FR8503956 A FR 8503956A FR 8503956 A FR8503956 A FR 8503956A FR 2578999 A1 FR2578999 A1 FR 2578999A1
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FR
France
Prior art keywords
liquid
lens
gas
balloons
pump
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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.)
Pending
Application number
FR8503956A
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French (fr)
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR8503956A priority Critical patent/FR2578999A1/en
Publication of FR2578999A1 publication Critical patent/FR2578999A1/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/30—Sound-focusing or directing, e.g. scanning using refraction, e.g. acoustic lenses

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Surgical Instruments (AREA)

Abstract

The device of the invention makes it possible to vary the focus of an acoustic lens 1 consisting of a flexible elastic lens-shaped membrane filled with liquid. It consists of inflatable balloons 3 supplied with liquid or gas through pipes 4 by a micro-pump 5 with its reservoir 6. These balloons are housed in non-extensible reservoirs 2 of the lens 1. By inflating and deflating the balloons, the amount of liquid in the lens is varied and the focus is altered. Intended particularly for use in medical applications of ultrasound.

Description

La présente invention concerne un dispositif pour faire varier le point focal d'une lentille acoustique. The present invention relates to a device for varying the focal point of an acoustic lens.

Le point focal des lentilles acoustiques est généralement fixe, ce qui limite leur utilité
Le dispositif selon l'invention permet la variation du point focal d'une lentille acoustique (1) constituée d'une membrane souple et élasti,e en forme de lentille remplie d'un liquide à indice de refraction < 1 ou > 1 aux ultrasons, et présentant des réservoirs non-extensibles (2). Le nombre et la forme des réservoirs sont variables. Un ballon gonflable < 3) se trouve dans chaque réservoir.The focal point of acoustic lenses is usually fixed, which limits their usefulness
The device according to the invention allows the variation of the focal point of an acoustic lens (1) consisting of a flexible and elastic membrane, in the form of a lens filled with a refractive index <1 or> 1 liquid with ultrasound , and having non-extensible reservoirs (2). The number and shape of the tanks are variable. An inflatable balloon <3) is in each tank.

Chaque ballon est relié par un tuyau (4) à une micro-pompe < 5) avec sa réserve (6) de liquide ou de gaz. En gonflant les ballons, le liquide dans les réservoirs non-extensibles reflue vers la lentille, modifiant ainsi son point focal. En dégonflant les ballons, le liquide revient dans les réservoirs.Each balloon is connected by a pipe (4) to a micro-pump <5) with its reserve (6) of liquid or gas. By inflating the balloons, the liquid in the non-extensible reservoirs flows back to the lens, thus changing its focal point. By deflating the balloons, the liquid returns to the tanks.

Selon une forme de réalisation préférentielle, la micro-pompe (5) avec sa réserve (6), les tuyaux (4), les ballons (3) et les réservoirs (2), se trouvent derriére le transducteur (7) et suivent les mouvements, oscillants ou rotatoires, du transducteur. According to a preferred embodiment, the micro-pump (5) with its reserve (6), the pipes (4), the balloons (3) and the tanks (2), are located behind the transducer (7) and follow the Oscillating or rotational movements of the transducer.

Selon une variante, la micro-pompe {S} et sa réserve (6) sont localisées loin du transducteur (7) et ne suivent pas les mouvements de celui-ci. Les tuyaux souples (4) reliant les ballons à la micropompe, peuvent permettre l'oscillation du transducteur sans compromettre le fonctionnement du dispositif. According to one variant, the micro-pump {S} and its reserve (6) are located far from the transducer (7) and do not follow the movements thereof. The hoses (4) connecting the balloons to the micropump, can allow the oscillation of the transducer without compromising the operation of the device.

La figure 1 représente, en coupe, le dispositif selon l'invention.  Figure 1 shows, in section, the device according to the invention.

La figure 2,représente, en coupe, Ine variante de ce dispositif. Figure 2 shows, in section, a variant of this device.

La quantification du point focal peut être réalisée par un potentiomètre, par rapport au niveau de liquide dans la réserve de la micro-pompe, ou bien à: la préssion de gaz dans la réserve, corrigée pour la température. The quantification of the focal point can be carried out by a potentiometer, with respect to the level of liquid in the reserve of the micro-pump, or else: the presence of gas in the reserve, corrected for the temperature.

Le dispositif selon l'invention est particulièrement destiné à l'usage des ultrasons dans le domaine médical.  The device according to the invention is particularly intended for the use of ultrasound in the medical field.

Claims (3)

REVENDICATIONS 1) Dispositif pour faire varier le point focal d'une lentille acoustique constituée d'une membrane souple et élastique en forme de lentille remplie de liquide (1), et présentant des réservoirs nonextensibles (2) caractérisée en ce qu'un ballon gonflable (3) de forme variable, alimenté en liquide ou en gaz à travers un tuyau (4) par un micro-pompe (5), avec sa réserve (6) en liquidé ou en gaz, se trouve dans chaque réservoir de la lentille, et en gonflant ou en dégonflant ces ballons, le volume de liquide dans la lentille (1) varie, modifiant ainsi son point focal.1) Device for varying the focal point of an acoustic lens consisting of a flexible membrane and resilient lens-shaped filled with liquid (1), and having nonextensible reservoirs (2) characterized in that an inflatable balloon (3) of variable shape, supplied with liquid or gas through a pipe (4) by a micro-pump (5), with its reservoir (6) liquid or gas, is in each tank of the lens, and by inflating or deflating these balloons, the volume of liquid in the lens (1) varies, thus changing its focal point. 2) Dispositif selon la revendication I précédente caractérisé en ce que la micro-pompe (5) avec sa réserve (6) en liquide ou en gaz, les tuyaux (4), les ballons (3) et les réservoirs () de la lentille, se trouvent derrière le transducteur et suivent les mouvements, oscillants ou rotatoires, du transducteur. 2) Device according to claim I preceding characterized in that the micro-pump (5) with its reserve (6) in liquid or gas, the pipes (4), the balloons (3) and the tanks () of the lens , are located behind the transducer and follow the oscillating or rotational movements of the transducer. 3J Dispositif selon la revendication I précédente caractérisé en ce que les tuyaux (4) reliant les ballons (3) à la micro-pompe (5) sontsouples, sella macro-pompe (5)':et sa réserve de liquide ou de gaz (6) se trouvent loin du transducteur et ne suivent pas les mouvements oscillants:de celui-ci. 3J Device according to preceding claim I characterized in that the pipes (4) connecting the balloons (3) to the micro-pump (5) sontsouples, sella macro-pump (5) ': and its reserve of liquid or gas ( 6) are far from the transducer and do not follow the oscillating movements: of this one. 4) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que le nombre et la forme des réservoirs (2) de la lentille, sont variables. 4) Device according to any one of the preceding claims characterized in that the number and shape of the reservoirs (2) of the lens, are variable. 5) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que la quantification du point focal est assurée par un potentiomètre par rapport au niveau de liquide dans la réserve (6) ou à la préssion de gaz dans la réserve corrigée pour la température.  5) Device according to any one of the preceding claims characterized in that the quantization of the focal point is provided by a potentiometer with respect to the level of liquid in the reserve (6) or the presence of gas in the temperature corrected reserve .
FR8503956A 1985-03-18 1985-03-18 Device for varying the focus of an acoustic lens Pending FR2578999A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8503956A FR2578999A1 (en) 1985-03-18 1985-03-18 Device for varying the focus of an acoustic lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8503956A FR2578999A1 (en) 1985-03-18 1985-03-18 Device for varying the focus of an acoustic lens

Publications (1)

Publication Number Publication Date
FR2578999A1 true FR2578999A1 (en) 1986-09-19

Family

ID=9317292

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8503956A Pending FR2578999A1 (en) 1985-03-18 1985-03-18 Device for varying the focus of an acoustic lens

Country Status (1)

Country Link
FR (1) FR2578999A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU170911U1 (en) * 2016-09-14 2017-05-15 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный университет геосистем и технологий" (СГУГиТ) Acoustic lens

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU179076A1 (en) * В. Г. Щербинский PIEZO POINT FOR ULTRASONIC DEFECTIC SCAN
EP0106292A2 (en) * 1982-10-18 1984-04-25 General Electric Company Ultrasonic sector scanner having fluid replacement capability

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU179076A1 (en) * В. Г. Щербинский PIEZO POINT FOR ULTRASONIC DEFECTIC SCAN
EP0106292A2 (en) * 1982-10-18 1984-04-25 General Electric Company Ultrasonic sector scanner having fluid replacement capability

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU170911U1 (en) * 2016-09-14 2017-05-15 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный университет геосистем и технологий" (СГУГиТ) Acoustic lens

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