FIBER OPTIC COMPONENT RECORDING DEVICE

Description

[0001] The present invention relates to a device for receiving an optical fiber component (also referred to as "fiber optic component"), an optical fiber cassette, an optical fiber module and a stack of optical fiber modules, and the corresponding use.

[0002] Fiber optic mounting devices serve to mechanically hold at least one fiber optic component, such as a fiber optic splitter, a fiber optic filter, a fiber optic splice protector, or an optical adapter. However, these fiber optic components can have different external geometries (e.g., cylindrical, rectangular, square) or dimensions (e.g., a few millimeters to several centimeters), which makes it difficult to securely and reliably fix the fiber optic components in a single mounting device.

[0003] Examples of recording devices known in the prior art are shown in US 2012 / 269487 A1, WO 2020 / 239827 A1 and US 2023 / 0187916 A1.

[0004] The present invention is based on the technical problem of providing an advantageous receiving device for fiber optic components, in particular those mentioned above.

[0005] According to the invention, this problem is solved by a receiving device according to claim 1. The receiving device comprises a support element, a first retaining element, and a second retaining element. As explained in detail below, the first retaining element and the second retaining element are arranged and designed in a special way on a support element surface of the support element to ensure secure and reliable fixation of the fiber optic component. This allows fiber optic components with different external geometries or different dimensions to be securely and reliably fixed.

[0006] Preferred embodiments are found in the dependent claims and the entire disclosure, whereby the description of features does not always differentiate in detail between device and process or use aspects; the disclosure is implicitly to be read with regard to all claim categories. For example, if the advantages of the receiving device for a purpose or a specific application are described, this is also to be seen as a disclosure of a corresponding use.

[0007] A vertical axis of the support element is defined orthogonal to the support element surface mentioned above and in claim 1. The first retaining element has a first support section and a first clamping section. The first support section projects from or protrudes from the support element surface along the vertical axis of the support element. The first clamping section is connected to the first support section via a proximal end and extends in an arc from the first proximal end to a first distal end of the first clamping section. The first clamping section has a radially outwardly curved outer surface with a radius of curvature that increases from the first proximal end to the first distal end with a distance from the first proximal end. Preferably, the curvature decreases continuously from the first proximal end to the first distal end; thus, the radius of curvature becomes continuously larger, and preferably also monotonic.The curvature consists of most of the outer surface of the first clamping section, preferably the entire surface.

[0008] In any case, the first clamping section is connected to the support element surface via the first support section. The first support element and the first retaining element can be integrally formed and preferably made of the same material. This makes it possible to form the first support element and the first retaining element in a few or even a single operation.

[0009] The receiving device further comprises a second retaining element arranged on the surface of the support element. The first clamping section faces this second retaining element in a projection onto a projection plane that is defined parallel to a principal plane of curvature (see its definition in the exemplary embodiment) of the first clamping section. In other words, the outer surface of the first clamping section faces at least partially towards the second retaining element; that is, it is oriented towards it.

[0010] The arc-shaped first clamping section can securely and reliably fix fiber optic components with different external geometries and dimensions and hold them in the receiving device.

[0011] For example, in this technical field, plastic parts, especially injection-molded parts made of thermoplastic materials, are common and also preferred in this case. Such components exhibit a relatively pronounced inherent elasticity due to the material, which, in conjunction with the arc-shaped design of the first clamping section, facilitates the secure fixing of the fiber optic component. However, other materials, such as metals, also possess a certain degree of inherent elasticity, which, in conjunction with the spring-like shape of the first clamping section, supports its function as a clamping element.

[0012] The fiber optic component can be fixed using either a force-fit or a form-fit connection. With a force-fit connection, the fiber optic component is clamped, for example, between the first clamping section, the second retaining element, and the surface of the support element. Alternatively, the fiber optic component can also be clamped only between the first clamping section and the second retaining element. With a form-fit connection, the fiber optic component can lie at least partially below a point with a minimal gap between the two retaining elements on the surface of the support element and be secured against falling out or unintentional detachment by the arc-shaped section of the first clamping section and the second retaining element. Naturally, both force-fit and form-fit connections can be combined.

[0013] The aforementioned inherent elasticity helps in both cases and can, in particular, enable deformation to adapt to the fiber optic component to be fixed and / or a snap-in connection (i.e., the creation of a positive fit).

[0014] In a further preferred embodiment, the second retaining element also has a second support section similar to the first. This second support section projects out from the surface of the support element along its vertical axis. Furthermore, the second retaining element also has a second clamping section similar to the first clamping section described above. The second clamping section is likewise connected to the second support section via a second proximal end, extends in an arc from it to a second distal end, and has a radially outwardly curved outer surface with an increasing radius of curvature, as already described. The second clamping section faces the first clamping section when projected onto the plane of projection. In simplified terms, the two retaining elements are arranged opposite each other (directly or offset) such that they face each other (directly or obliquely).

[0015] The arrangement and design of the second retaining element with the second support and clamping section make it possible to securely and reliably fix fiber optic components with different external geometries or dimensions between the first and second retaining elements.

[0016] In a further preferred embodiment, the first and / or second clamping section outer surface has an involute surface of a circular involute. More precisely, the first or second clamping section outer surface is curved in an arc shape when projected onto the projection plane, such that, preferably over a substantial part, preferably the entire surface, its projection line forms a circular involute.

[0017] In a further preferred embodiment, the first distal end of the first clamping section and / or the second distal end of the second clamping section is spaced apart from the support element surface by a first or second distance, which is defined parallel to the vertical axis of the support element and is preferably at most 2.0 mm, preferably at most 1.8 mm, 1.6 mm or even at most 1.4 mm, and preferably at least 1.0 mm, particularly preferably at least 1.1 mm or 1.2 mm.

[0018] In a further preferred embodiment, the outer surfaces of the clamping sections are spaced apart at the first and / or second distal end by a third distance, which is greater than or equal to a fourth distance, namely a minimum distance between the first and second outer surfaces of the clamping sections. This third and / or fourth distance is defined or measured parallel to the surface of the support element. Due to the specific design of these distances, the third distance, which is larger relative to the fourth, creates a "recess" by means of which a positive fit is generated and, for example, smaller fiber optic components such as splice protectors can be fixed in the area of ​​the distal ends of the clamping sections.

[0019] In a further preferred embodiment, the third distance is preferably at most 4 mm, particularly preferably at most 3 mm, but at least 2 mm. The fourth distance is preferably at most 3 mm, particularly preferably at most 2 mm, but at least 1 mm.

[0020] The design and arrangement of the first and second retaining elements with the specified distances to the support element surface and / or relative to each other make it possible to securely and reliably fix a large number of different fiber optic components, especially in combination with the described inherent elasticity of the retaining elements.

[0021] In a further preferred embodiment, the first clamping section of the first retaining element is arranged at least partially, preferably completely, directly opposite the second clamping section of the second retaining element. At least partial opposition is understood to mean an arrangement of the support element surfaces of two immediately adjacent retaining elements facing each other, in which, in a viewing direction defined parallel to the projection plane and parallel to the support element surface, the first retaining element overlaps at least partially with the second retaining element. The two retaining elements overlap (as seen in the projection) with at least 10% of their area considered in the projection, preferably at least 50%, and particularly preferably at least 80%. Furthermore, the opposing clamping sections can also be completely opposite, i.e., with their entire area (in the previously defined viewing direction).In other words, these two holding elements form a holding element pair with directly opposing holding elements whose load-bearing element surfaces face each other.

[0022] Preferably, the support element has a recess between the first and second retaining elements. This facilitates the production of the mounting device, including the retaining elements, using injection molding. Furthermore, this increases the flexibility of the retaining elements and makes it easier to push out the mounted fiber optic components, for example, using a tool from the underside of the mounting device.

[0023] In a further preferred embodiment, at least two pairs of holding elements, preferably directly opposite each other, are arranged on the support element surface at least in a longitudinal direction and / or a transverse direction.

[0024] In a further preferred embodiment, at least two pairs of directly opposing retaining elements are arranged on the support element surface in a longitudinal direction. The longitudinal direction is defined as parallel to the support element surface and orthogonal to the first and / or second principal plane of curvature. In other words, the pairs of retaining elements are arranged such that a fiber optic component is fixed by means of two adjacent pairs of retaining elements; this is advantageous, for example, for elongated fiber optic components (viewed along a fiber direction of the optical waveguide). Alternatively or additionally, at least two pairs of directly opposing retaining elements can also be arranged in a transverse direction, where the transverse direction is defined as parallel to the support element surface and parallel to the first or second principal plane of curvature (i.e., orthogonal to the longitudinal direction).Arranging multiple pairs of retaining elements in the transverse direction allows for the fixing of a large number of fiber optic components. Combining paired arrangements in the longitudinal and transverse directions combines the aforementioned advantages.

[0025] In a further preferred embodiment, the vertical extent of the clamping sections is greater than the horizontal extent when projected onto the projection plane. The vertical extent is defined here as the maximum (vertical) extension of the clamping section, measured orthogonally to the surface of the supporting element, from its upper apex to its distal end. In simpler terms, this is the height of the apex above the surface of the supporting element. The horizontal extent, on the other hand, refers to the maximum extension of the clamping section from its proximal end to its distal end, measured parallel to the surface of the supporting element. In simplified terms, the clamping sections therefore extend primarily vertically towards their distal end; thus, they have a large lever arm in the vertical direction.This lever arm, in conjunction with the inherent elasticity of the material used, acts as a flexible clamping device for the fiber optic components and also makes it possible to arrange a large number of retaining element pairs on the support element surface on a comparatively small footprint.

[0026] In a further preferred embodiment, the first clamping section and / or the second clamping section has a wall thickness that preferably deviates by no more than 15%, and particularly preferably by no more than 5%, from the mean wall thickness, with this deviation applying for at least 80% of the clamping section's extension length from its proximal to its distal end. This simplifies the manufacture of the clamping sections and increases their flexibility. Furthermore, it prevents the occurrence of mechanical stress peaks at transitions between areas of differing wall thicknesses, thereby increasing the fatigue strength and inherent elasticity of the clamping sections.

[0027] In a further preferred embodiment, the holding device is made of plastic, preferably in one piece, preferably of ABS plastic, and preferably as an injection-molded part. This makes it possible to manufacture the holding device cost-effectively and in large quantities with sufficient tolerances. Furthermore, this makes it possible to produce a holding device that is sufficiently robust both mechanically and thermally. These holding devices are also cost-effective and exhibit advantageous inherent elasticity. The holding device can, for example, have a Shore hardness (D) of at least 68 Shore, with possible (independent) upper limits of no more than 90 or 86 Shore.

[0028] Furthermore, the receiving device can also be manufactured using two-component injection molding (so-called "2K injection molding"), whereby, for example, the retaining elements are made entirely or partially from a material that is softer than the supporting element, thereby further increasing their inherent elasticity.

[0029] The invention also relates to an optical fiber cassette for receiving at least one optical fiber component. The optical fiber cassette comprises at least one excess length storage area and a receiving area with a receiving device according to the invention. Naturally, a plurality of receiving devices can be provided in the optical fiber cassette, and excess lengths of the optical fibers connected to the optical fiber components, e.g., splice points, can be stored in the excess length storage area provided directly in the optical fiber cassette.

[0030] Furthermore, the invention also relates to a fiber optic module with a fiber optic cassette according to the invention. The fiber optic module comprises a plurality of fiber optic cassettes and at least one patch point.

[0031] Furthermore, the invention also relates to a fiber optic module stack with a plurality of fiber optic modules according to the invention.

[0032] The invention also relates to the use of the receiving device according to the invention in a fiber optic cassette, preferably also in the form of using the fiber optic cassette in a fiber optic module, and particularly preferably in the form of using the fiber optic module in a fiber optic module stack to receive at least one fiber optic splitter, one fiber optic filter, one fiber optic splice protector, and / or one optical adapter. The receiving device according to the invention can be integral with the fiber optic cassette or designed as a separate component inserted into the fiber optic cassette. Furthermore, the receiving device according to the invention can, for example, be arranged in a fiber optic cassette which, as such, is arranged in a fiber optic module stack.

[0033] The invention will be explained in more detail below using exemplary embodiments, whereby the individual features within the scope of the claims may also be essential to the invention in other combinations and no distinction will be made in detail between the different claim categories.

[0034] In detail: Figure 1 a side view of part of a recording device according to the invention; Figure 2 an enlarged side view of the receiving device with the fiber optic component inserted; Figure 3 a perspective view of the recording device with several pairs of holding elements; Figure 4 a fiber optic cassette with a receiving device according to the invention; Figure 5 a fiber optic cassette with a receiving device according to the invention and further holding elements.

[0035] Figure 1Figure 1 shows a side view of a receiving device 10 according to the invention, which comprises a support element 50, a first holding element 30, and a second holding element 40. More precisely, Figure 1 shows Figure 1 An embodiment of the receiving device 10 in which two holding elements 30, 40 are positioned opposite each other and together form a holding element pair. Here, the holding elements 30, 40 are identical, so that the assignment of roles as first or second holding elements is arbitrary in this example.

[0036] Each of the retaining elements 30, 40 has a first or second support section 31, 41 and a first or second clamping section 35, 45. The clamping sections 35, 45 are connected to the support element surface 50s via the respective support section 31, 41. The first or second support section 31, 41 projects from the support element surface 50s along a vertical axis Z of the support element that is orthogonal to the support element surface 50s. The first or second clamping section 34, 45 of the first or second retaining element 30, 40 is connected to the first or second support section 31, 41 via a first or second proximal end 30p, 40p and extends in an arc from the first or second proximal end 30p, 40p to a first or second distal end 30d, 40d. From the proximal end 30p, 40p of the first or second retaining element 30,40, the wall thickness of the first or second retaining element 30,40 is (in the direction of the distal end 30d, 40d)The second retaining element 30,40 remains constant and only deviates from this in the area of ​​the distal ends 30d, 40d.

[0037] Furthermore, the first and second clamping sections 35, 45 have a radially outwardly curved outer surface 36, 46, respectively, which has a radius of curvature r1, r2 that increases with distance from the first and second proximal ends 30p, 40p to the first and second distal ends 30d, 40d. In this embodiment, the outer surfaces 36 and 46 of the first and second clamping sections have an involute surface of a circular involute; that is, in projection onto the projection plane, their projection line forms a circular involute that extends over 70%, preferably 90%, and particularly preferably the entire length of the projection line (between the proximal and distal ends).

[0038] The first and second clamping sections 35, 45 are bent in their respective principal planes of curvature KE1, KE2. The principal plane of curvature KE1, KE2 is defined as the plane containing the radii of curvature of the outer surfaces 36, 46 of the first and second clamping sections, respectively. In other words, the principal plane of curvature KE1, KE2 contains the radii of curvature of the outer surfaces 36 and 46 of the clamping sections, respectively. In a projection plane E parallel to the principal plane of curvature KE1 of the first clamping section 35, the first clamping section 35 faces the second clamping section 45. In the illustrated embodiment, the first and second retaining elements 30, 40 are identical, so that the second retaining element 40 is a mirror image of the first retaining element 30 in the projection plane E. Furthermore, in this example, the first and second principal curvature planes KE1 and KE2 are parallel to each other and to the projection plane E.

[0039] Out of Figure 1It is also evident that both the first and second support sections 31, 41 and the first and second clamping sections 35, 45 have draft angles on their inner surfaces. More precisely, in a projection onto the projection plane E, the mutually facing inner surfaces of the two support sections 31, 41 are tilted relative to the vertical axis Z of the support element in such a way that demolding (i.e., pulling a tool downwards in the negative Z direction) is enabled. The clamping sections 35, 45 are tilted in the opposite direction to the inner surfaces of the support sections 31, 41, at least in part, to allow demolding. Suitable demolding angles include, for example, 1°, preferably 3°, and particularly preferably 5°.

[0040] Figure 2Figure 1 shows an enlarged side view of the receiving device 10 with a fiber optic component 20 (cylindrical in this embodiment) received therein. The first and second support sections 31, 41 are spaced at their respective distal ends 30d, 40d from the surface of the support element 50s by a first and second distance d1, d2, which is defined parallel to the vertical axis Z of the support element. The first and second distances d1, d2 are 1.3 mm.

[0041] Furthermore, the distal ends 30d, 40d of the first and second clamping sections 35, 45, respectively, are spaced apart by a third distance d3, parallel to the support element surface 50s. At the narrowest point between the outer surfaces 36, 46 of the first and second clamping sections, a (minimal) fourth distance d4, measured parallel to the support element surface 50s, is defined, which is smaller than the third distance d3. Preferably, the third distance d3 is at most 4 mm, more preferably at most 3 mm, but at least 2 mm. Furthermore, the fourth distance d4 is preferably at most 3 mm, more preferably at most 2 mm, but at least 1 mm.

[0042] The two clamping sections 35, 40 each have a vertical extent Z1, Z2, which extends vertically (i.e., orthogonally to the support element surface 50s) from a vertex of the clamping section outer surface 36, 46 to the distal end 30d, 40d, and a horizontal extent Y1, Y2, which extends horizontally (i.e., parallel to the support element surface 50s) from the proximal end 30p, 40p to the distal end 30d, 40d. The vertical extent Z1, Z2 is greater than the horizontal extent Y1, Y2.

[0043] Below the two support sections 31, 41 (i.e., in the area between the first and second retaining elements 30, 40), the support element surface 50s has a support element recess 52, as shown, among other things, in Figure 3 recognizable.

[0044] Figure 3Figure 1 shows a perspective view of the receiving device 10 with several, namely a total of six, pairs of retaining elements, each consisting of a first and a second retaining element 30, 40. In the illustrated embodiment, the retaining elements 30, 40 are identical, so that the assignment of roles as first or second retaining elements 30, 40 is arbitrary in this example. As shown in Figure 1, the retaining elements 30, 40 are identical. Figure 3 As can be seen, the six pairs of retaining elements are arranged in two rows spaced apart along a longitudinal direction X, with three pairs following each other in each row along a transverse direction Y. This makes it possible to fix a large number of fiber optic components 20, especially elongated ones, in a small installation space.

[0045] Figure 4 Figure 1 shows a perspective view of a fiber optic cassette 100 with a receiving device 10 arranged therein. The receiving device 10 essentially corresponds to that of the Figure 3However, this cassette also has two vertical side walls that rise parallel to the vertical axis Z of the support element from the support element surface 50s. The fiber optic cassette 100 includes an excess length storage compartment 110 and a receiving area 120. The optical fibers connected to the fiber optic components 20, for example a filter or a splitter, are placed in the receiving device 10 after the fiber optic component 20 has been mounted on it and fixed in place by means of the receiving elements 30, 40.

[0046] Several of the 100 fiber optic cassettes can be combined to form a fiber optic cassette stack and housed in a fiber optic module. A fiber optic module is a device for accommodating connection and patch points, in which typically a plurality (e.g., twelve or a plurality of twelve) of optical fibers in cables are connected or spliced, each with a single optical fiber in its respective fiber optic cassette, and are led to termination elements (such as connectors) via short connecting fibers (pigtails). Fiber optic cables with connecting elements (such as connectors) can then be used to extend the fiber optic connections, as described, for example, in European patent application EP 3 511 753 A1.

[0047] Furthermore, several fiber optic modules can be combined to form a fiber optic module stack, e.g., in a distribution cabinet. Such configurations are described, for example, in European patent applications EP 3 511 753 A1 and EP 3 916 449 A1, as well as in German utility model DE 20 2013 012 809 U1.

[0048] Figure 5Figure 1 shows a perspective view of another fiber optic cassette 100 with another receiving device 10' arranged therein, also according to the invention. In addition to the retaining element pairs 30, 40 described above, further retaining elements 30', 40' are arranged on the support element surface 50s, which essentially consist of plate-like support elements facing each other and rising parallel from the support element surface 50s. These support elements can be used, for example, to fix narrower components such as shrink or crimp splice protectors. In the fiber optic cassette 100 shown, larger components such as fiber optic splitters, fiber optic filters, or optical adapters can also be received by means of the retaining element pairs 30, 40 with arc-shaped clamping section outer surface. Reference sign

[0049] 10, 10'Receiving device 20Optical fiber component (abbreviated: OFC component) 30, 30'First retaining element 30First proximal end 30First distal end 31First support section 35First clamping section 36First clamping section outer surface 40,40' Second retaining element 40p Second proximal end 40d Second distal end 41 Second support section 45 Second clamping section 46 Second clamping section outer surface 50 Support element 50s Support element surface 51 Edge element 52 Recess 100 Fiber optic cassette 110 Excess length storage 120 Receipt area 200 Fiber optic module d1 First spacing d2 Second spacing d3 Third spacing d4 Fourth spacing r1 Radius of curvature (of the first clamping section outer surface 36) r2 Radius of curvature (of the second clamping section outer surface 46) KE1 Main plane of curvature (of the first retaining element 30) KE2 Main plane of curvature (of the second retaining element 31) Y1 Horizontal extent (of the first clamping section 35) Y2 Horizontal extent (of the second clamping section 45) Z1 vertical extension (of the first clamping section 35) Z2 vertical extension (of the second clamping section 45) XL longitudinal direction Y transverse direction Z support element vertical axis,

Claims

1. A receiving device (10) for receiving an optical fiber cable component (OFC component) (20), the receiving device (10) comprising: a support element (50) having a support element surface (50s) which defines a support element vertical axis (Z) directed orthogonally to the support element surface (50s); a first retaining element (30) which has a first support portion (31) and a first clamping portion (35), wherein the first support portion (31) projects out of the support element surface (50s) along the support element vertical axis (Z), wherein the first clamping portion (35) is connected to the first support portion (31) via a first proximal end (30p) and extends in an arcuate manner from the first proximal end (30p) towards a first distal end (30d), and wherein the first clamping portion (35) has a radially outwardly curved first clamping portion outer surface (36) which has a radius of curvature (r1) increasing with a distance from the first proximal end (30p) from the first proximal end (30p) towards the first distal end (30d); and a second retaining element (40) which is arranged on the support element surface (50s), wherein, in a projection onto a projection plane (E) which is defined parallel to a main plane of curvature (KE1) of the first clamping portion (35), the first clamping portion (35) faces the second retaining element (40).

2. The receiving device (10) according to claim 1, wherein the second retaining element (40) has a second support portion (41) and a second clamping portion (45), wherein the second support portion (41) projects out of the support element surface (50s) along the support element vertical axis (Z), wherein the second clamping portion (45) is connected to the second support portion (41) via a second proximal end (40p) and extends in an arcuate manner from the second proximal end (40p) towards a second distal end (40d), wherein the second clamping portion (45) has a radially outwardly curved second clamping portion outer surface (46) which has a radius of curvature (r2) increasing with a distance from the second proximal end (40p) from the second proximal end (40p) towards the second distal end (40d), and wherein, in the projection onto the projection plane (E), the first clamping portion (35) faces the second clamping portion (45).

3. The receiving device (10) according to claim 2, wherein the first clamping portion outer surface (36) and / or the second clamping portion outer surface (46) has an involute surface of a involute of a circle.

4. The receiving device (10) according to claim 2 or 3, wherein the first distal end (30d) of the first clamping portion and / or the second distal end (40d) of the second clamping portion (40) is spaced apart from the support element surface (50s) by a first and second distance (d1, d2), respectively, which is defined parallel to the support element vertical axis (Z), wherein the first and second distance (d1, d2), respectively, is preferably at most 2.0 mm, and preferably at least 1.0 mm.

5. The receiving device (10) according to any one of claims 2 to 4, wherein a third distance (d3) which is defined between the first clamping portion outer surface (36) and the second clamping portion outer surface (46) at the first distal end (30d) and / or the second distal end (40d), measured parallel to the support element surface (50s), is greater than or equal to a fourth distance (d4) which is defined at a point of a minimum distance between the first clamping portion outer surface (36) and the second clamping portion outer surface (46), measured parallel to the support element surface (50s).

6. The receiving device (10) according to claim 5, wherein the third distance (d3) is preferably at most 4 mm, particularly preferably at most 3 mm, but at least 2 mm; and wherein the fourth distance (d4) is preferably at most 3 mm, particularly preferably at most 2 mm, but at least 1 mm.

7. The receiving device (10) according to any one of claims 2 to 6, wherein the first clamping portion (35) is arranged on the support element surface (50s) at least partially, preferably completely, directly opposite the second clamping portion (45).

8. The receiving device (10) according to any one of claims 2 to 7, wherein at least two pairs of retaining elements (30, 40) directly opposite each other are arranged on the support element surface (50s) at least in a longitudinal direction (X) and / or a transverse direction (Y).

9. The receiving device (10) according to any one of claims 2 to 8, wherein, in the clamping portions (35, 40), in the projection onto the projection plane (E), a vertical extent (Z1, Z2) is greater than a horizontal extent (Y1, Y2).

10. The receiving device (10) according to any one of the preceding claims, wherein the first clamping portion (36) and / or the second clamping portion (46) has a wall thickness which preferably deviates from an average wall thickness by less than 15%, particularly preferably by less than 5%.

11. The receiving device (10) according to any one of the preceding claims, wherein the receiving device (10) is made of plastic, preferably in one piece, preferably of an ABS plastic, preferably as an injection-molded part.

12. An OFC cassette (100) for receiving at least one OFC component (20), the OFC cassette (100) having at least one excess length shelf (110) and a receiving region (120) with a receiving device (10) according to any one of claims 1 to 11.

13. An OFC module (200) having a plurality of OFC cassettes (100) according to claim 12 and at least one patch site.

14. An OFC module stack with a plurality of OFC modules (200) according to claim 13.

15. Use of a receiving device (10) according to any one of claims 1 to 11 in an OFC cassette (100) according to claim 12, preferably also in the form of a use of the OFC cassette (100) in an OFC module (200) according to claim 13, particularly preferably in the form of a use of the OFC module (200) in an OFC module stack according to claim 14 for receiving at least one OFC splitter, an OFC filter, an OFC splice protection and / or an optical adapter.