SYSTEM FOR ATTACHING AND TENSIONING A LIGHT CONDUCTOR TO A SUPPORT ELEMENT

Description

Technical area

[0001] The invention relates to a system for fastening and tensioning a light guide to a support element.

[0002] The invention further relates to a lighting device for a motor vehicle, comprising a system for fastening and tensioning a light guide to a support element. Technical background

[0003] Fastening systems for attaching optical fibers are known in the prior art. Typically, a optical fiber is pressed into a recess having a shape corresponding to the optical fiber. However, the circumferential surface of the optical fiber must be enclosed by more than 50% in order to fix the optical fiber in the recess. This disadvantageously reduces the amount of emitted light. Alternatively, in the prior art, optical fibers are clamped between two parts, one of which is often transparent. However, this has the disadvantage that two parts are required for fixation. Furthermore, the known systems do not provide a solution for tensioning the optical fiber. Thus, tensioning the optical fiber in the known systems always requires a separate tensioning device.DE 20 2022 001042 U1 discloses a lamp for a vehicle, comprising: a light source unit having a light source and a circuit board; and an optical fiber arranged in front of the light source unit. The light source may be, for example, an LED, and the circuit board may be a printed circuit board. The light emitted by the light source of the light source unit may enter the optical fiber and propagate in the optical fiber, being totally reflected. In this case, the light propagating in the optical fiber may be radiated outward through a side surface of the optical fiber. The lamp may further comprise an inner lens arranged between the light source unit and the optical fiber and intended to be in close contact with the circuit board, and the inner lens may fix or hold one side of the optical fiber. More specifically, the inner lens may fix or hold a rear end of the optical fiber.The lamp may further comprise a heat sink arranged behind the light source unit, i.e., the circuit board, and provided to be in close contact with a rear surface of the circuit board. The light source unit and the heat sink may be fixedly connected to each other. The lamp may further comprise an elastic member arranged behind the heat sink and provided to be in close contact with the heat sink, wherein the elastic member has elasticity. When a shape of the elastic member is deformed such that the amount of deformation is relatively large, the elastic member can push the heat sink arranged in front of the elastic member forward using a restoring force of the elastic member. In this case, the heat sink moves forward, and thus the rear end of the optical fiber (i.e.,A portion of the optical fiber (a portion of the optical fiber facing the light source unit) moves forward, allowing the tension of the optical fiber to decrease. Conversely, if a shape of the elastic member is deformed so that the amount of deformation is relatively small, the extent to which the elastic member pushes the heat sink forward also decreases, causing the heat sink to move backward. Therefore, the rear end of the optical fiber also moves backward, allowing the tension of the optical fiber to increase. Therefore, it is possible to adjust the tension of the optical fiber by moving the heat sink and the optical fiber by adjusting the force applied to the elastic member.

[0004] The object of the present invention is to alleviate or eliminate the disadvantages of the prior art. The invention therefore aims, in particular, to create an improved system for fastening and tensioning a light guide. This object is achieved by a system having the features of claim 1. Preferred embodiments are specified in the dependent claims. Brief description of the invention

[0005] According to the invention, the system comprises: * a light guide, preferably an optical fiber, wherein the light guide has a first end section, a second end section, and a light guide body formed between the first end section and the second end section, wherein the light guide body is preferably designed substantially cylindrically, wherein at least the first end section has a light coupling surface via which light from a light source can be coupled into the light guide, wherein a light guide lateral surface delimiting the light guide body is designed at least in sections as a light coupling surface via which light coupled into the light guide through its light coupling surface can be coupled out, * a carrier element comprising a holding section on which the light guide lateral surface rests at least in sections and which is designed such thatthat the resting optical fiber lateral surface is at least partially enclosed circumferentially by the holding section, wherein the carrier element has a fastening section and a clamping section, wherein the first end section of the optical fiber is displaceably held on the clamping section, wherein the second end section of the optical fiber is fastened, in particular stationary, to the fastening section, * a clamping device which is configured to displace the first end section of the optical fiber relative to the clamping section of the carrier element, by the action of a clamping force, along a clamping direction, whereby the optical fiber is clamped relative to the clamping section of the carrier element, wherein during the displacement a normal distance, which is greater than zero, between the light coupling surface of the first end section and the clamping section of the carrier element is reduced, wherein the holding section and the clamping section are designed such thatthat the clamping force acting on the first end section in the direction of the clamping section translates into a contact force on the optical fiber jacket surface, by means of which the optical fiber jacket surface resting on the holding section is pressed against the holding section.

[0006] This offers the advantage that, on the one hand, the light guide is fixed to the holding section, and, at the same time, the distance between the light coupling surface of the light guide and the clamping section of the support element can be adjusted using the clamping device. The contact force allows the light guide or its outer surface to be secured to the holding section.

[0007] It can be provided that the clamping device has a linearly displaceable clamping element, preferably one mounted on the carrier element so as to be linearly displaceable, which is designed to engage in an engagement section of the first end section of the optical fiber, wherein a linear displacement of the clamping element is transmitted to the first end section by the engagement, wherein the linear displacement of the clamping element along the clamping direction causes the first end section of the optical fiber, which is in engagement with the clamping element, to be displaced, in particular simultaneously with the clamping element, in the direction of the clamping section of the carrier element, wherein preferably the clamping element and the first end section are displaced by an equal displacement length.

[0008] It can be provided that the clamping device has a guide element, in particular a guide channel, which is designed to guide the optical fiber at least in sections along the clamping direction, wherein the guide element is preferably designed such that the guided optical fiber section is held displaceably on the guide element or through the guide element, wherein the clamping element is arranged between the guide element and the clamping section of the carrier element and is mounted displaceably relative to the guide element.

[0009] It can be provided that the clamping device has a displacement means that is movable relative to the clamping element and is preferably engaged with the clamping element. The displacement means is configured to engage a contact surface of the guide element. The clamping element is operatively connected to the guide element via the displacement means in such a way that a movement, in particular a rotation, of the displacement means relative to the clamping element is converted into a displacement of the clamping element along the clamping direction. The displacement means is preferably movable through a through-opening of the clamping element.

[0010] It can be provided that the displacement means is a screw which can be screwed through a threaded opening of the clamping element, which is designed complementarily to the screw, in order to displace the clamping element, wherein a screw end which is facing away from a screw head of the screw is designed to engage the contact surface of the guide element, wherein screwing the screw into the threaded opening induces the engagement of the screw end on the contact surface and converts this into a displacement of the clamping element along the clamping direction.

[0011] It can be provided that the guide element is connected to the support element, in particular in a stationary manner.

[0012] It can be provided that the second end section has a further light coupling surface, wherein the further light coupling surface is preferably oriented orthogonally to the light guide jacket surface.

[0013] The holding section can be provided with a curved shape. This allows for particularly efficient clamping of the optical fiber or the pressing of the optical fiber's outer surface against the holding section as a result of the clamping. After clamping, the optical fiber's outer surface can follow the holding section or rest firmly against it.

[0014] It can be provided that the first end section of the light guide opens into a receiving section of the clamping element, wherein the receiving section has a shape corresponding to the light guide, wherein the receiving section encloses the first end section at least partially, preferably completely on the circumference.

[0015] It can be provided that the engagement section of the first end section of the optical fiber is designed as a contact surface, which is oriented in particular parallel to the light coupling surface of the first end section, wherein the clamping element has a counter-contact surface that can be contacted with the contact surface, wherein when the contact surface of the first end section contacts the counter-contact surface of the clamping element, the displacement of the clamping element along the clamping direction is transferred to the first end section of the optical fiber.

[0016] It can be provided that the holding section is designed as a wall shaped corresponding to the light guide surface, which is designed such that at most half of the circumference of the light guide surface is circumferentially enclosed by the wall.

[0017] It can be provided that the light coupling surface is formed on a section of the optical fiber jacket surface exposed from the holding section.

[0018] It can be provided that the support element has an optical element, in particular a thick-walled optical system, which has a light entry surface and a light exit surface. The optical element is arranged on the support element in such a way that light coupled out from the light output surface of the light guide is coupled into the optical element via the light entry surface of the optical element. The light guide or the light of the light guide, together with the optical element, can form, for example, a direction indicator or a warning light.

[0019] It can be provided that the optical element is arranged on the carrier element in such a way that the light guide body is arranged at least in sections between the holding section and the optical element.

[0020] It can be provided that the carrier element has a first light source which is arranged on the carrier element, preferably on the clamping section of the carrier element, in such a way that light emitted by the light source can be coupled into the light coupling surface of the first end section of the light guide, wherein the first light source is preferably arranged opposite the light coupling surface, at a distance greater than zero.

[0021] It can be provided that the carrier element has a second light source which is arranged on the fastening section of the carrier element, wherein the second end section of the light guide has a further light coupling surface, wherein the second light source is arranged and configured to couple light into the further light coupling surface of the second end section of the light guide, wherein preferably the second light source is arranged opposite the further light coupling surface, at a distance greater than zero.

[0022] It can be provided that the first light coupling surface of the first end section is oriented orthogonally to the optical fiber lateral surface.

[0023] It can be provided that the normal distance of the light coupling surface of the first end section to the clamping section of the carrier element is greater than zero, wherein the normal distance before the displacement of the first end section by the clamping device is greater than after its displacement, wherein preferably the displacement is such that a temperature-related linear expansion of the light guide is compensated.

[0024] According to the invention, a lighting device for a motor vehicle is further provided, comprising a system, wherein the lighting device comprises, for example, a motor vehicle headlight, a tail light, a brake light or a signal light. Short description of the characters

[0025] The invention is explained in more detail below with reference to exemplary drawings. Fig. 1a a perspective view of an embodiment of a system according to the invention; Fig. 1banother view of the system according to Fig. 1 ; Fig. 2 a detailed view of the system according to Fig. 1 ; Fig. 3 a further detailed view of the system according to Fig. 1 ; Fig. 4 a sectional view of the detailed view according to Fig. 3 ; and Fig. 5 a detailed view of section BB' in Fig. 1 . Detailed description of the embodiments

[0026] Fig. 1a and Fig. 1b each show a system 1 for fastening and tensioning a light guide 2 to a support element 3.

[0027] The system 1 comprises a light guide 2, preferably an optical fiber or a glass fiber, wherein the light guide 2 has a first end section 2a, a second end section 2b, and a light guide body 2c formed between the first end section 2a and the second end section 2b. The light guide body 2c can, for example, be substantially cylindrical. At least the first end section 2a has a light coupling surface 2a1, via which light from a light source can be coupled into the light guide 2. A light guide lateral surface 2c1 bounding the light guide body 2c is formed, at least in sections, as a light coupling surface 2c2, via which light coupled into the light guide through its light coupling surface 2a1 can be coupled out. The first light coupling surface 2a1 of the first end section 2a is preferably oriented orthogonally to the light guide lateral surface 2c1.

[0028] The system 1 further comprises a carrier element 3 with a holding section 4, on which the light guide surface 2c1 rests at least in part and which is designed such that the resting light guide surface 2c1 is at least partially enclosed on the circumference by the holding section 4. The holding section 4 can be designed as a wall shaped to correspond to the light guide surface 2c1, which is designed such that at most half of the circumference of the light guide surface 2c1 is enclosed on the circumference by the wall. This makes it possible to achieve particularly high luminosity, since more than half of the light guide surface 2c1 is exposed and can therefore emit light. The light output surface 2c2 is preferably formed on a section of the light guide surface 2c1 that is exposed by the holding section 4.

[0029] The support element 3 has a fastening section 3b and a clamping section 3a. The first end section 2a of the optical fiber 2 is slidably held on the clamping section 3a. The second end section 2b of the optical fiber is fastened, in particular in a fixed position, to the fastening section 3b.

[0030] In Fig. 1a the carrier element 3 comprises an optical element 11, in particular a thick-walled optic. Fig. 1b the optical element 11 is not shown.

[0031] The optical element 11 has a light entry surface 11a and a light exit surface. The optical element is arranged on the support element 3 such that light coupled out from the light output surface 2c2 of the light guide 2 is coupled into the optical element via the light entry surface 11a of the optical element. This can be used, for example, to implement a lighting function of a direction indicator. The optical element is arranged on the support element 3 such that the light guide body 2c, in particular its light output surface, is arranged at least in sections between the holding section 4 and the optical element.

[0032] The system 1 further comprises a clamping device 5, which is configured to displace the first end section 2a of the light guide 2 relative to the clamping section 3a of the support element 3, by the action of a clamping force F, along a clamping direction S. The light guide 2 is thereby clamped relative to the clamping section 3a of the support element 3. During the displacement, a normal distance, which is greater than zero, between the light coupling surface 2a1 of the first end section 2a and the clamping section 3a of the support element 3 is reduced. The holding section 4 and the clamping section 3a are configured such that the clamping force F acting on the first end section 2a in the direction of the clamping section 3a translates a contact force A onto the light guide outer surface 2c1. The contact force A presses the light guide outer surface 2c1 resting on the holding section 4 against the holding section 4.In the embodiment shown, the holding section 4 has a cambered shape.

[0033] The Fig. 2 to 4show detailed views of the clamping device 5, the functioning of which will now be described in more detail using an exemplary embodiment. The exemplary clamping device 5 has a linearly displaceable clamping element 6, preferably one mounted on the carrier element 3 for linear displacement. This clamping element 6 is designed to engage in an engagement section 7 of the first end section 2a of the light guide 2. Through this engagement, a linear displacement of the clamping element 6 is transferred to the first end section 2a. Through the linear displacement of the clamping element 6 along the clamping direction S, the first end section 2a of the light guide 2, which is in engagement with the clamping element 6, can be displaced in the direction of the clamping section 3a of the carrier element 3. This displacement takes place in particular simultaneously with the displacement of the clamping element 6. The clamping element 6 and the first end section 2a are displaced essentially by an equal displacement length.

[0034] In Fig. 2 The clamping device 5 is shown without clamping element 6. The first end section 2a is in Fig. 2 thus shown exposed. In Fig. 3 The clamping element 6 is arranged functionally on the clamping device 5. The unclamped state is shown in each case.

[0035] The clamping device 5 can have a guide element 8, in particular a guide channel. The guide element 8 or the guide channel is designed to guide the optical fiber 2 at least partially along the clamping direction S. The guide element 8 is preferably connected to the carrier element 3, in particular in a fixed position. For this purpose, the guide element 8 is designed such that the guided optical fiber section is held displaceably on the guide element 8 or through the guide element 8. The clamping element 6 is arranged between the guide element 8 and the clamping section 3a of the carrier element 3 and is mounted displaceably relative to the guide element 8.

[0036] The clamping device 5 comprises a displacement means 9, which is movable relative to the clamping element 6. Preferably, the displacement means 9 is engaged with the clamping element 6 or operatively connected thereto. The displacement means 9 is configured to engage a contact surface 8a of the guide element 8. The clamping element 6 is further operatively connected to the guide element 8 via the displacement means 9 such that a movement, in particular a rotation, of the displacement means 9 relative to the clamping element 6 is converted into a displacement of the clamping element 6 along the clamping direction S.

[0037] Preferably, the displacement means 9 is a screw which, in order to displace the clamping element 6, can be screwed through a threaded opening in the clamping element 6 which is designed complementarily to the screw. A screw end which faces away from the screw head of the screw is designed to engage the contact surface 8a of the guide element 8. Screwing the screw into the threaded opening induces engagement of the screw end with the contact surface 8a and subsequently translates into a displacement of the clamping element 6 along the clamping direction S. Until the point in time at which the screw end contacts the contact surface 8a, the screw is screwed into the threaded opening counter to the clamping direction S. As soon as the screw contacts the contact surface 8a, the clamping element 6 is pressed away from the guide element 8 or from the contact surface 8a by further screwing in the same screwing direction.This results in the displacement of the first end section 2a in the direction of the clamping section 3a as described above.

[0038] The second end section 2b can have a further light coupling surface 2b1, wherein the further light coupling surface 2b1 is preferably oriented orthogonally to the light guide jacket surface 2c1.

[0039] The first end section 2a of the light guide 2 opens into a receiving section of the clamping element 6, wherein the receiving section has a shape corresponding to the light guide 2 (or to the first end section 2a of the light guide 2). The receiving section encloses the first end section 2a at least partially, preferably completely, on the circumference.

[0040] Now, the drive mechanism (or shifting mechanism) of the light guide used in the illustrated embodiment will be described in more detail. Details are Fig. 4(this shows a horizontal section through the Fig. 3 The engagement section 7 of the first end section 2a of the optical fiber 2 is designed as a contact surface, which is oriented in particular parallel to the light coupling surface 2a1 of the first end section 2a. The clamping element 6 has a counter-contact surface 6a that can be contacted with the contact surface. When the contact surface of the first end section 2a contacts the counter-contact surface 6a of the clamping element 6, the displacement of the clamping element 6 along the clamping direction S can be transferred to the first end section 2a of the optical fiber 2, essentially by a frictional connection.

[0041] The carrier element 3 can have a first light source 10a, which is arranged on the carrier element 3, preferably on the clamping section 3a of the carrier element 3, such that light emitted by the light source 10a can be coupled into the light coupling surface 2a1 of the first end section 2a of the light guide 2. The first light source 10a can be arranged opposite the light coupling surface 2a1, at a distance greater than zero. The first light source 10a can also be arranged on a circuit board designed to control the light source, wherein the circuit board can be fastened to the carrier element 3. The circuit board and / or the light source can be arranged between the first end section 2a and the carrier element 3.

[0042] The support element 3 can have a second light source 10b, which is arranged on the fastening section 3b of the support element 3. The second end section 2b of the light guide 2 can have a further light coupling surface 2b1, wherein the second light source 10b is arranged and configured to couple light into the further light coupling surface 2b1 of the second end section 2b of the light guide (2). The second light source 10b can be arranged opposite the further light coupling surface 2b1, at a distance greater than zero.

[0043] The normal distance between the light coupling surface 2a1 of the first end section 2a and the clamping section 3a of the support element 3 is greater than zero, with the normal distance being greater before the first end section 2a is displaced by the clamping device 5 than after its displacement. The displacement can be such that a temperature-induced linear expansion of the light guide 2 is compensated.

[0044] In Fig. 5 is a detailed view of section BB' in Fig. 1 shown. The light guide surface 2c1 of the light guide body 2c lies circumferentially in sections in the holding section 4 of the carrier element 3. The light output surface 2c2 of the light guide body 2c faces a light input surface 11a of the optical element 11. The optical element 11 is attached to the carrier element 3. The light guide body 2c is thus arranged between the optical element 11 and the holding section 4 of the carrier element 3. LIST OF REFERENCE SYMBOLS

[0045] 1System 2Light guide 2aFirst end section (of the light guide) 2a1Light coupling surface (of the first end section) 2bSecond end section (of the light guide) 2b1Light coupling surface (of the second end section) 2cLight guide body 2c1Light guide jacket surface 2c2Light coupling surface (of the light guide body) 3Support element 3aClamping section (of the support element) 3bFastening section (of the support element) 4Holding section (of the support element) 5Clamping device 6Clamping element 6aCounter contact surface (of the clamping element) 7Engagement section (of the first end section of the light guide) 8Guide element (of the clamping device) 8aPressing surface (of the guide element) 9Displacement means (of the clamping device) (=screw) 10aFirst light source 10bSecond light source 11Optical element 11aLight coupling surface (of the optical element) FSclamping force SSclamping direction AContact force B,B'Axis of the section in Fig.1a and Fig.5

Claims

1. System (1) for fastening and tensioning an optical guide (2) to a carrier element (3), comprising: * an optical guide (2), preferably an optical fiber, wherein the optical guide (2) has a first end section (2a), a second end section (2b), and an optical guide body (2c) formed between the first end section (2a) and the second end section (2b), wherein the light guide body (2c) is preferably designed to be essentially cylindrical, wherein at least the first end section (2a) has a light coupling surface (2a1) via which light from a light source can be coupled into the light guide (2), wherein a light guide jacket surface (2c1) bounding the light guide body (2c) is formed at least in sections as a light decoupling surface (2c2) via which light coupled into the light guide via its light coupling surface (2a1) can be decoupled, * a carrier element (3) comprising a holding section (4) on which the light guide jacket surface (2c1) rests at least in sections and which is designed in such a way that the resting light guide jacket surface (2c1) is at least partially enclosed by the holding section (4) around its circumference, wherein the carrier element (3) having a fastening section (3b) and a clamping section (3a), the first end section (2a) of the optical fiber (2) being held in a displaceable manner on the clamping section (3a), the second end section (2b) of the optical fiber being fastened, in particular in a fixed manner, on the fastening section (3b), * a clamping device (5) which is designed to move the first end section (2a) of the light guide (2) relative to the clamping section (3a) of the carrier element (3) along a clamping direction (S) by means of a clamping force (F), whereby the light guide (2) being clamped relative to the clamping section (3a) of the carrier element (3), wherein during the displacement a normal distance which is greater than zero between the light coupling surface (2a1) of the first end section (2a) and the clamping section (3a) of the carrier element (3) is reduced, wherein the holding section (4) and the clamping section (3a) are designed such that the clamping force (F) acting on the first end section (2a) in the direction of the clamping section (3a) is converted into a contact force (A) on the light guide jacket surface (2c1), by which the light guide jacket surface (2c) resting on the holding section (4) is pressed against the holding section (4).

2. System according to claim 1, wherein the clamping device (5) has a linearly displaceable clamping element (6), preferably mounted on the carrier element (3) so as to be linearly displaceable, which is designed to engage in an engagement section (7) of the first end section (2a) of the light guide (2), wherein the engagement transfers a linear displacement of the clamping element (6) to the first end section (2a), wherein the linear displacement of the clamping element (6) along the clamping direction (S) causes the first end section (2a) of the light guide (2) engaged with the clamping element (6) in particular simultaneously with the clamping element (6), in the direction of the clamping section (3a) of the carrier element (3), whereby preferably the clamping element (6) and the first end section (2a) are displaced by an equal displacement length.

3. System according to claim 2, wherein the tensioning device (5) has a guide element (8), in particular a guide channel, which is designed to guide the optical fiber (2) at least in sections along the tensioning direction (S), wherein the guide element (8) is preferably designed such that the guided optical fiber section is held in a displaceable manner on the guide element (8) or through the guide element (8), wherein the tensioning element (6) is arranged between the guide element (8) and the tensioning section (3a) of the carrier element (3) and is mounted so as to be movable relative to the guide element (8), wherein the guide element (8) is preferably connected to the carrier element (3), in particular fixedly.

4. System according to claim 3, wherein the clamping device (5) has a displacement means (9) which is movable relative to the clamping element (6) and preferably engages with the clamping element (6), wherein the displacement means (9) is designed to engage with a contact surface (8a) of the guide element (8), wherein the clamping element (6) is operatively connected to the guide element (8) via the displacement means (9) in such a way that a movement, in particular a rotation, of the displacement means (9) relative to the clamping element (6) is converted into a displacement of the clamping element (6) along the clamping direction (S), wherein the displacement means (9) is preferably a screw which can be screwed through a threaded opening of the clamping element (6) designed to be complementary to the screw in order to displace the clamping element (6), wherein a screw end which is opposite a screw head of the screw is designed to engage with the contact surface (8a) of the guide element (8), wherein screwing the screw into the threaded opening induces the screw end to engage with the contact surface (8a) and is converted into a displacement of the clamping element (6) along the clamping direction.

5. System according to one of the preceding claims, wherein the second end section (2b) has a further light coupling surface (2b1), wherein the further light coupling surface (2b1) is preferably oriented orthogonally to the light guide jacket surface (2c1).

6. System according to one of the preceding claims, wherein the retaining section (4) has a curved shape.

7. System according to one of claims 2 to 6, wherein the first end section (2a) of the light guide (2) opens into a receiving section of the clamping element (6), wherein the receiving section has a shape corresponding to the light guide (2), wherein the receiving section at least partially, preferably completely, surrounds the first end section (2a).

8. System according to one of claims 2 to 7, wherein the engagement section (7) of the first end section (2a) of the light guide (2) is designed as a contact surface which is oriented in particular parallel to the light coupling surface (2a1) of the first end section (2a), wherein the clamping element (6) has a counter-contact surface (6a) that can be contacted with the contact surface, wherein when the contact surface of the first end section (2a) contacts the counter-contact surface (6a) of the clamping element (6), the displacement of the clamping element (6) along the clamping direction (S) is transferred to the first end section (2a) of the light guide (2).

9. System according to one of the preceding claims, wherein the retaining section (4) is designed as a wall formed to correspond to the light guide jacket surface (2c1), which is designed in such a way that at most half of the circumference of the light guide jacket surface (2c1) is enclosed by the wall on the circumference, wherein the light coupling surface (2c2) is preferably formed on a section of the light guide jacket surface (2c1) exposed by the holding section (4).

10. System according to one of the preceding claims, wherein the carrier element (3) has an optical element (11), in particular a thick-walled optic, which has a light entry surface (11a) and a light exit surface, wherein the optical element is arranged on the carrier element (3) in such a way that light coupled out of the light coupling surface (2c2) of the light guide (2) is coupled into the optical element via the light entry surface (11a) of the optical element into the optical element, wherein the optical element is preferably arranged on the carrier element (3) in such a way that the light guide body (2c) is arranged at least in sections between the holding section (4) and the optical element.

11. System according to one of the preceding claims, wherein the carrier element (3) has a first light source (10a) which is arranged on the carrier element (3), preferably on the tensioning section (3a) of the carrier element (3), in such a way that light emitted from the light source (10a) can be coupled into the light coupling surface (2a1) of the first end section (2a) of the light guide (2), wherein the first light source (10a) is preferably arranged opposite the light coupling surface (2a1) at a distance greater than zero.

12. System according to one of the preceding claims, wherein the carrier element (3) has a second light source (10b) which is arranged on the fastening section (3b) of the carrier element (3), wherein the second end section (2b) of the light guide (2) has a further light coupling surface (2b1), wherein the second light source (10b) is arranged and designed in such a way as to couple light into the further light coupling surface (2b1) of the second end section (2b) of the light guide (2), wherein the second light source (10b) is preferably arranged opposite the further light coupling surface (2b1) at a distance greater than zero.

13. System according to one of the preceding claims, wherein the first light coupling surface (2a1) of the first end section (2a) is oriented orthogonally to the light guide jacket surface (2c1).

14. System according to one of the preceding claims, wherein the normal distance between the light coupling surface (2a1) of the first end section (2a) and the clamping section (3a) of the carrier element (3) is greater than zero, wherein the normal distance before displacement of the first end section (2a) by the clamping device (5) is greater than after its displacement, wherein preferably the displacement is such that temperature-induced length expansion of the light guide (2) is compensated.

15. Lighting device for a motor vehicle, comprising a system (1) according to one of claims 1 to 14, wherein the lighting device is designed, for example, as a motor vehicle headlight, a rear light, a brake light, or a signal light, wherein the lighting device has a light source for forming a light function, wherein the light source comprises the light guide of the system (1).