DEVICE FOR REMOVING DEPOSITS AND/OR PRECIPITATE ON A SUBSTRATE

Abstract

A device (1) for eliminating deposits and/or precipitation on a substrate (10, 110) comprises at least one transducer (20, 120) captively connected to the substrate (10, 110) by a connection layer (30), wherein the connection layer (30) is arranged between the substrate (10, 110) and the transducer (20, 120). The invention provides for the connection layer (30) to comprise a connection material (31) and a filling material (32). Furthermore, an optical system for environment monitoring comprising an optical monitoring device comprising a lens and/or an observation window and the above device is provided, wherein the lens or the observation window is formed by the substrate.

Claims

1. Device (1) for eliminating deposits and/or precipitation on a substrate (10), comprising at least one transducer (20, 120) captively connected to the substrate (10, 110) by a connection layer (30), wherein the connection layer (30) is arranged between the substrate (10, 110) and the transducer (20, 120), characterized in that the connection layer (30) comprises a connection material (31) and a filling material (32).

2. Device (1) according to claim 1, characterized in that the acoustic and/or the mechanical properties of the connection layer (30) are set by the mass ratio between the connection material (31) and the filling material (32).

3. Device (1) according to claim 1, characterized in that the sound propagation velocity in the filling material (32) is different from the sound propagation velocity in the connection material (31).

4. Device (1) according to claim 1, characterized in that the filling material (32) at least partly consists of a silicate glass, in particular a borosilicate glass.

5. Device (1) according to claim 1, characterized in that the filling material (32) produces a defined distance (33, 233) between the transducer (20, 120) and the substrate (10, 110).

6. Device (1) according to claim 5, characterized in that at least one shaped body (34, 234a, 234b) composed of the filling material (32) forms an acoustic bridge as a result of a coupling to the transducer (20, 120) and the substrate (10, 110).

7. Device (1) according to claim 6, characterized in that the at least one shaped body (34, 234a, 234b) is spherical or rod-shaped.

8. Device (1) according to claim 6, characterized in that the connection material (31) is arranged at an interface between the at least one shaped body (34, 234a, 234b) and the transducer (20, 120) and at an interface between the at least one shaped body (34, 234a, 234b) and the substrate (10, 110).

9. Device (1) according to claim 1, characterized in that the connection layer (30) is provided for coupling surface waves and/or bulk waves generated by the transducer (20, 120) into the substrate (10, 110).

10. Device (1) according to claim 1, characterized in that the device (1) furthermore comprises a generator for generating a driver signal in a frequency range above 100 kHz for driving a transducer (20, 120).

11. Optical system for environment monitoring comprising an optical monitoring device comprising a lens and/or an observation window and the device according to claim 1, wherein the lens or the observation window is formed by the substrate.

Description

[0025] Further features, details and advantages of the invention are evident from the wording of the claims and from the following description of exemplary embodiments with reference to the drawings, in which:

[0026] FIG. 1 shows a schematic, perspective view of the substrate with a transducer arranged thereon;

[0027] FIG. 2 shows a schematic, sectional view of the substrate with a transducer arranged thereon according to a first embodiment;

[0028] FIG. 3 shows a schematic, sectional view of the substrate with a transducer arranged thereon according to a second embodiment; and

[0029] FIG. 4 shows a schematic, sectional view of the substrate with a transducer arranged thereon according to a third embodiment.

[0030] FIG. 1 shows a schematic, perspective view of the device 1 for eliminating deposits and/or precipitation on a substrate 10 with a transducer 20 arranged on the substrate 10 according to a first embodiment, wherein the substrate is arranged on a surface 11 of the substrate.

[0031] FIG. 2 shows a schematic, sectional view of the device 1 for eliminating deposits and/or precipitation on a substrate 10 with a transducer 20 arranged on the substrate 10 according to a first embodiment. The transducer is arranged on a surface 11 of the substrate 10. A connection layer 30 comprising a connection material 31 and a filling material 32 lies between the substrate 10 and the transducer 20.

[0032] In the present first embodiment, the filling material 32 in the form of shaped bodies 34 embodied as spheres or cylinders lies in the connection material 31. The shaped bodies 34 form a matrix for the connection material 31, such that the connection layer 30 is accordingly constructed from two components. The thickness of the connection layer 30 is defined by the distance 33 prescribed by the shaped bodies 34. The shaped bodies 34 bear both directly against the transducer 20 and directly against the substrate 10 and form an acoustic bridge.

[0033] FIG. 3 shows a schematic, sectional view of the device 1 for eliminating deposits and/or precipitation on a substrate 110 with a transducer 120 arranged on the substrate 110 according to a second embodiment.

[0034] The surface 111 of the substrate 110 facing the transducer 120 is curved. In the surface facing the substrate 110, the transducer 120 has a curvature substantially corresponding to the curvature of the surface 111.

[0035] In this embodiment, too, the filling material 32 in the form of shaped bodies 34 embodied as spheres or cylinders lies in the connection material 31, wherein the shaped bodies 34 form a matrix for the connection material 31. The connection layer 30 is accordingly constructed from two components. The shaped bodies 34 bear both directly against the transducer 120 and directly against the substrate 110 and form an acoustic bridge. The thickness of the connection layer 30 is defined by the distance 33 prescribed by the shaped bodies 34.

[0036] FIG. 4 shows a schematic, sectional view of the device 1 for eliminating deposits and/or precipitation on a substrate 110 with a transducer 20 arranged on the substrate 110 according to a third embodiment.

[0037] In this embodiment, the surface 111 of the substrate 110 facing the transducer 20 is curved, wherein the surface of the transducer 20 facing the substrate 110 has substantially no curvature. Accordingly, the distance 233, 235 between the transducer 20 and the surface 111 of the substrate 110 varies.

[0038] The shaped bodies 234a, 234b composed of the filling material 32 have different diameters in order to compensate for the varying distance 233, 235 between the surface 111 and the transducer 20. In this case, the shaped bodies 234a, 234b bear both against the surface 111 of the substrate 110 and against the transducer 20 and form an acoustic bridge.

[0039] The interspace between the transducer 20 and the surface 111 is filled with the connection material 31 alongside the filling material 32.

[0040] The invention is not restricted to any of the embodiments described above, but rather is modifiable in diverse ways. Provision can be made, for example, for the filling material 32 to be embedded in the connection material 31 and not to consist of discrete shaped bodies 34, but rather to be admixed with the connection material.

[0041] As an alternative thereto, provision can be made for the at least one shaped body 34, 234a, 234b to be a structure body having a preferably regular structure, in particular a net structure or a honeycomb structure.

[0042] All features and advantages emerging from the claims, the description and the drawing, including structural details, spatial arrangements and method steps, may be essential to the invention both by themselves and in a wide variety of combinations.

LIST OF REFERENCE SIGNS

[0043] 1 Device [0044] 10, 110 Substrate [0045] 11, 111 Surface [0046] 20, 120 Transducer [0047] 30 Connection layer [0048] 31 Connection material [0049] 32 Filling material [0050] 33, 233 First distance [0051] 34, 234a, 234b Shaped body [0052] 35, 235 Second distance