US3818137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for rendering visible acoustic vibrations
Assignee: WISSENSCHAFTL FOTOGRAFIE INST
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Filing: 1971-07-01
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Granted: 1974-06-18
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Expires: 1991-07-01
Abstract
Abstract The invention relates to a device for rendering visible acoustic vibrations, in which a fluid medium held on a foundation is caused to execute wave notions with the help of a movable wall or wall section, and in which the wave motions thus engendered are rendered optically visible.
Inventors
- 👤 M Kage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:35
CPC Classifications
G; G01; G01H; G01H9/00; G01H9/002
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
160 words
A device for rendering visible acoustic vibrations, in which a fluid transmitting medium held on a foundation is caused to execute wave motions with the help of a movable wall or wall section, and in which the wave motions thus engendered are rendered optically visible, in which on one side of the foundation there is a first optical group comprising a lightsource (1) and a reproducing optical system (2) including means to reproduce a light-spot originating from the light-source and, on one side of the foundation, a second optical group comprising a multicolored patterned viewing plate (5) with a surface which has a grid in the region of the focal point of the reproducing optical system, and also comprising a lens system (6) arranged behind the viewing plate when seen in the direction of the beam of light, said lens system serving to project the beam coming from the light-spot on the multicolored viewing plate on to a screen (7).
Claim 2
Independent Claim
160 words
A device for rendering visible acoustic vibrations, in which a fluid transmitting medium held on a foundation is caused to execute wave motions with the help of a movable wall or wall section, and in which the wave motions thus engendered are rendered optically visible, in which on one side of the foundation there is a first optical group comprising a lightsource (1) and a reproducing optical system (2) including means to reproduce a light-spot originating from the light-source and, on one side of the foundation, a second optical group comprising a multicolored patterned viewing plate (5) with a surface which has a grid in the region of the focal point of the reproducing optical system, and also comprising a lens system (6) arranged behind the viewing plate when seen in the direction of the beam of light, said lens system serving to project the beam coming from the light-spot on the multicolored viewing plate on to a screen (7).
Claim 3
Dependent Claim
32 words
A device as in claim 1, in which the foundation has a maximum diffusion strength, and consists of transparent material, and said optical groups are located on opposite sides of the foundation.
Claim 4
Dependent Claim
28 words
A device as in claim 1, in which the foundation consists of a reflective material and both optical groups are located on the same side of the foundation.
Claim 5
Dependent Claim
31 words
A device as in claim 1, characterised in that the thickness of the layer of transmitting medium resting on the foundation continuously increases from one side to the diametrally opposed side.
Claim 6
Dependent Claim
45 words
A device as in claim 4, characterised in that one edge portion of the foundation is not covered by the transmitting medium, while the diametrally opposed edge portion corresponds to the region of grestest thickness of the layer of transmitting medium resting on the foundation.
Claim 7
Dependent Claim
39 words
A device as in claim 1, in which, in order to determine the effective cross-section of the beam of light from the light-source (1), an aperture diaphragm (8) is provided between the light-source and the reproducing optical system (2).
Claim 8
Dependent Claim
52 words
A device as in claim 1, in which the light-source (1) has associated with it an optical system (9) which, seen in the direction of the beam of light (10), consists of a lens system (11) on the same side as the light-source, a condenser (12) and a subsequent collector lens (13).
Claim 9
Dependent Claim
34 words
A device as in claim 7, characterised in that the optical axis of the reproducing optical system (2) forms an angle of 90* with that of the optical system (9) associated with the light-source.
Claim 10
Dependent Claim
61 words
A device as in claim 8, characterised in that there is provided between the reproducing optical system (2) and the optical system (9) associated with the light-source (1) a flat mirror (14), arranged at an angle to the optical axis of said system (9), said mirror reflecting the beam coming from the light-source in the direction of the reproducing optical system.
Claim 11
Dependent Claim
61 words
A device as in claim 1, in which the reproducing optical system (2) includes means to introduce the image at the apertUre diaphragm (8) on the viewing-plate (5) in a raio of 1:1, and comprises an optical system which contains, coaxial to one another, plane-concave divergent lenses (16a, 16b), between which biconvex collector lenses (17a, 17b) with intense curvature are provided.
Claim 12
Dependent Claim
22 words
A device as in claim 1, characterised in that the viewing-plate (5) consists of several parts (19a, 19b, 19c) of different colors.
Claim 13
Dependent Claim
34 words
A device as in claim 11, characterised in that the viewing-plate (5) is subdivided into sectors succeeding one another along the circumference, each succeeding sector being of a different color from the preceding one.
Claim 14
Dependent Claim
58 words
A device as in claim 11, characterised in that the viewing-plate (5) consists of three or more concentric rings (19a, 19b, 19c), said rings being rotatable relative to one another, said viewing-plate (5) being subdivided into parts of equal length succeeding one another along the circumference, each succeeding part being of a different colour from the preceding one.
Claim 15
Dependent Claim
33 words
A device as in claim 13, characterised in that, in order to drive the rings, slow-running synchronous induction motors are provided, which are in a driving connection with the rings through intermediate members.
Claim 16
Dependent Claim
37 words
A device as in claim 1, characterised in that a special fluid is used as a transmitting medium (4), its boiling-point roughly corresponding to that of water, yet whose viscosity is considerably less than that of water.
Claim 17
Dependent Claim
23 words
A device as in claim 1, characterised in that the fluid transmitting medium (4) is energised, in order to generate the wave motions.
Claim 18
Dependent Claim
23 words
A device as in claim 1, characterised in that the fluid transmitting medium (4) is energised, in order to generate the wave motions.
Claim 19
Dependent Claim
47 words
A device as in claim 1, characterised in that the fluid transmitting medium (4'''') is energised on a free surface by the vibrating armature (28) of a loudspeaker, dipped in the fluid, and is also energized by causing the foundation (3'''') to vibrate by another loudspeaker (30).
Claim 20
Dependent Claim
43 words
A device as in claim 17, characterised in that the fluid transmitting medium (4) is energised with the help of a movable wall of a loudspeaker in which the vibrator coil is connected, to a movable wall which dips into the transmitting medium.
Claim 21
Dependent Claim
108 words
A device as in claim 17, characterised in that, in order to generate the wave motions in the transmitting medium, two loudspeakers arranged eccentrically to the foundation are used, which are located adjacent two diametrically opposed points on the circumference of the foundation one of said speakers, as a so-called high-frequency speaker, being associated with a part of the foundation covered in a thick layer of the transmitting medium, and being associated with the high-frequency sounds, and the other, as a so-called low-frequency loudspeaker, being associated with the lower-frequency sounds, and with the part of the foundation covered at most by a thin layer of the transmitting medium.
Claim 22
Dependent Claim
17 words
A device as in claim 1, in which the foundation has a thickness of 15 Mu .
Claim 23
Dependent Claim
16 words
A device as in claim 11 in which said parts are movable relative to one another.
Claim 24
Dependent Claim
15 words
A device as in claim 13 in which the rings are on different superposed planes.
Claim 25
Dependent Claim
22 words
A device as in claim 1 in which the fluid medium has a vicosity not more than one-third the viscosity of water.
Claim 26
Dependent Claim
21 words
A device as in claim 19 in which the movable wall forms part of a cylindrical body of light plastic material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |