Light shade for receiving modular optical elements

Abstract

The invention relates to a device (100) for guiding light emitted by a light-emitting element in order to illuminate an environment. The device (100) has: - a first end (10), which faces the light-emitting element and is configured to receive and emit light, and - a light-guiding body (20), which is configured to receive the light emitted by the first end and emit it into the environment. The first end (10) is furthermore configured to receive at least one optical element (OE) which is designed to change at least one property of the light emitted by the illuminating means.

Description

[0001] Light aperture for accommodating modular optical elements

[0002] This article presents a beam guidance device that is configured to accommodate an optical element on the lamp side. Additionally, an optical element compatible with the beam guidance device is presented, which can be expanded with optical elements of the same or the same design.

[0003] To illuminate the environment, for example when illuminating works of art or architectural objects, special requirements must be placed on the light sources. The light provided by the light source must fit into the overall impression and put the object to be illuminated in the foreground. For this purpose, apertures and optical elements such as filters are used. These are arranged externally, in front of the light output of the light source and change the light properties. The disadvantage of this type of arrangement, however, is that a viewer always sees the filter attached from the outside, and modular expansion with further filters can only be achieved with restrictions on the overall appearance of the lighting. Furthermore, the light guiding properties of the aperture are limited or not fully effective, since the filter arranged in front of it changes the light guidance before the environment or an object is finally illuminated.

[0004] There is a need for a beam delivery device that can be extended with optical elements without changing the overall appearance of the illumination and maintains the beam delivery characteristics.

[0005] The object is achieved with the device according to claim 1 and the optical element according to claim 17.

[0006] According to a first aspect, a device for guiding light emitted by a lighting means for illuminating an environment is proposed. The device can alternatively also serve as a device for beam guidance and can accordingly be referred to as a device for beam guidance. The device has a first end facing the lighting means, which is configured to receive and emit light. The device further has a light-guiding body, which is configured to receive the light emitted by the first end and to emit it to the environment. The first end is further configured to accommodate at least one optical element, which is designed to change at least one property of the light emitted by the lighting means.The device can further be designed to be connected to the lighting means with the first end first, in particular to be placed on or in the lighting means.

[0007] The device may further comprise a receiving portion arranged between the first end and the light-guiding body, which is configured to receive and secure and / or releasably lock at least one optical element. The receiving portion and the light-guiding body may be formed integrally. The receiving portion may be cylindrical.

[0008] The receiving section, which is in particular cylindrical, can have a storage edge, in particular an inner one, on which a first optical element rests. The storage edge can be arranged on the light-guiding body side, in particular in the receiving section. The receiving section, which is in particular cylindrical, can have a (first) guide groove, in particular oriented along an (outer) circumference of the receiving section, with at least two or three openings / passages. The openings / passages of the receiving section can (each) form a connection between an outer and inner region of the receiving section. A first, in particular annular, securing device can be inserted into the (first) guide groove. The first securing device can have at least two or three, in particular inwardly directed, bulges. The first securing device can be or will be inserted into the (first) guide groove, wherein the bulges are guided through the openings / passages.The protrusions can protrude through the openings / passages. The protrusions protruding through the openings / passages can secure, in particular releasably, a first optical element located on the storage edge.

[0009] The receiving section can have at least one further guide groove with at least two or three openings. The further guide groove can be arranged along a longitudinal axis of the receiving section, in particular between the first end and the (first) guide groove. A further optical element can rest on the bulges of the first securing device. The further optical element can be secured, in particular releasably, by a further securing device inserted into the further guide groove.

[0010] The receiving section can have an edge and a storage edge. The receiving section can have at least two securing locking regions. One of at least two guide pieces of an optical element can be inserted into each of the at least two securing locking regions. The optical element can be secured and / or releasably locked, in particular by mutual rotation of the device and the optical element about a common longitudinal axis.

[0011] The at least two securing locking areas can be arranged opposite one another along the circumference.

[0012] The at least two securing locking regions can each have at least one locking web. The locking web can be oriented / shaped along a circumference of the receiving section and / or movable along a longitudinal axis of the receiving section. The at least two securing locking regions can each have at least one holding web. The holding web can be arranged at a first distance from the locking web along the longitudinal axis of the receiving section. The holding web can be oriented / shaped along the circumference of the receiving section. The holding web can be arranged opposite the locking web along the longitudinal axis. The holding web and locking web can be arranged anti-parallel to one another.In other words, one web (of the holding web and the locking web) can point in one direction along the circumference, while the other web (of the holding web and the locking web) can point in a different direction along the circumference, while both webs can be parallel to each other. In other words, a loose end of one web can point in one direction along the circumference, while a different loose end of the other web can point in a different direction along the circumference. The webs can be connected to the rim and / or the storage rim.

[0013] Two guide pieces of an optical element can each be inserted and clamped between the locking bar and the holding bar, in particular by mutual rotation about a common longitudinal axis of the optical element and the device. The optical element can be secured in / on / at the device / the storage edge.

[0014] The at least two locking webs can each have a recess / shape, particularly oriented in the longitudinal axis direction of the receiving section at the end of the locking web. The guide pieces can each have a recess / shape complementary to the recess / shape, which can engage the recess / shape of the respective locking web when the at least two guide pieces of the optical element are each inserted between the locking web and the holding web and moved to a locking position, wherein the optical element can be secured and releasably locked in the locking position.

[0015] The receiving section can have at least two guide aid parts, in particular formed from an edge and a storage edge. The guide aid parts can each be arranged along the circumference of the receiving section, in particular on the storage edge. The guide aid parts can each be arranged between the at least two holding webs, in particular on the storage edge. A second distance along the circumference between the guide aid part and the holding web can correspond approximately to a length (along a circumference of the optical element) of the guide piece. The at least two guide pieces can each be guided or, for example, movable between the guide aid part and the holding web (past), in particular as far as the storage edge, by a movement of the optical element and the device along a common longitudinal axis relative to one another.The insertion of the at least two guide pieces between the locking bar and the holding bar can be carried out by a mutual rotation of the optical element and the device about the common longitudinal axis.

[0016] The light guide body can have an outer side and an inner side, wherein the outer side can be configured to be fastened in / to the light source. The outer side can have a thread with which the device can be screwed into a light source. The outer side can have recesses / forms that can be clamped into complementary recesses / forms arranged in the light source.

[0017] The interior can have a diffuse reflection-reducing surface. The light guide body can be made of various materials.

[0018] This has the advantage that stray light, which occurs when the light emitted by the lamp hits the inside of the light guide body, is reduced. In other words, hardly any stray light leaves the light guide body. This creates the impression that the lamp disappears, since an observer mostly sees the direct reflection on the inside of the light guide body. The surface can be designed as a black or white surface and / or as a polished, in particular highly polished, surface. The surface can be designed as a light-absorbing surface, in particular as a surface provided with a light-absorbing layer. The surface can be designed as a light-absorbing surface, in particular as a surface provided with light-absorbing layers.

[0019] The surface can be a metallic finish, particularly gold, steel, copper, aluminum, silver, bronze, anthracite, or platinum. The surface can be coated with metal.

[0020] The light guide body, in particular the inner side, can correspond to the shape of a funnel, in particular a trumpet-shaped funnel, wherein the first end has a smaller diameter than a second end of the funnel.

[0021] This has the advantage that stray light, which occurs when the light emitted by the lamp hits the inside of the light guide body, is reflected back into the beam angle of the lamp. In other words, hardly any stray light leaves the light guide body. This creates the impression that the lamp disappears, since an observer mostly sees the direct reflection on the inside of the light guide body.

[0022] The light guide body, in particular an inner side of the light guide body, can be configured to: - direct reflected light, which arises, for example, when the light emitted by the illuminant strikes the inner side of the light guide body, at least almost exclusively into a beam angle range of the illuminant; and / or to minimize the illuminance of scattered light, which arises, for example, when the light emitted by the illuminant strikes the inner side of the light guide body. The light guide body, in particular an inner side of the light guide body, can be configured to shade the scattered light.

[0023] According to a second aspect, an optical element for receiving light emitted by a light source is proposed. The optical element is designed to change at least one light property of the light and to emit the changed light. The optical element is configured to accommodate a further optical element and to be accommodated by a device for beam guidance. A receiving structure of the device for receiving the optical element can be similar to a receiving structure of the optical element for receiving a further optical element, and / or the optical element can be connectable to form at least two or a plurality of optical elements.

[0024] The optical element may have a first side, a second side, a storage edge, an edge connecting the first and second sides, and at least two guide pieces arranged on the edge, in particular formed from the edge, which guide pieces are or can each be inserted into a securing locking region of the beam guiding device.

[0025] The edge may have at least two securing locking areas. The at least two securing locking areas may be formed from the edge and / or the storage edge.

[0026] At least two guide pieces of a further optical element can each be or become inserted into the at least one securing locking region, and the further optical element can be or become secured and / or releasably locked in / on the optical element, in particular by a mutual rotation of the optical element and the further optical element about a common longitudinal axis.

[0027] The at least two securing locking regions can be arranged opposite one another along a circumference of the optical element.

[0028] The at least two securing locking regions can each have at least one locking rib. The locking rib can be oriented / shaped along the circumference of the optical element and / or movable along a longitudinal axis of the optical element. The at least two securing locking regions can each have at least one holding rib. The holding rib can be arranged at a first distance from the locking rib along the longitudinal axis of the optical element. The holding rib can be oriented / shaped along the circumference of the optical element. The holding rib can be arranged opposite the locking rib along the longitudinal axis. The holding rib and the locking rib can be arranged anti-parallel to one another. In other words, one rib can point in one direction along the circumference, while the other rib can point in a different direction along the circumference, and both ribs can be parallel to one another.

[0029] Two guide pieces of an additional optical element can each be inserted and clamped between the locking bar and the holding bar. The additional optical element can be secured on / at / in the optical element / storage edge.

[0030] The at least two locking bars can each have a recess, in particular along the longitudinal axis of the optical element at the end of the locking bar. The guide pieces of the further optical element can each have a recess complementary to the recess, which can engage the recess of the respective locking bar when the at least two guide pieces of the further optical element are inserted between the locking bar and the holding bar and moved to a locking position, whereby the further optical element can be secured and releasably locked in the locking position.

[0031] The edge can have at least two guide aid parts, in particular formed from the edge and / or the storage edge. The guide aid parts can each be arranged along the circumference of the optical element between the at least two locking webs, in particular on the storage edge.

[0032] A second distance along the circumference between a guide aid part and the retaining web can approximately correspond to the length of a guide piece. A first distance along the longitudinal axis between a locking web and the retaining web can approximately correspond to the height of the guide piece in the longitudinal axis direction.

[0033] The at least two guide pieces of the further optical element can be inserted between the guide aid part and the holding web (past it), in particular to the storage edge, by a movement of the optical element and the further optical element along a common longitudinal axis (LA) relative to one another or can be movable, for example. The insertion of the at least two guide pieces between the locking web and the holding web can be achieved by a mutual rotation about the common longitudinal axis of the optical element and the further optical element. According to a third aspect, a lighting means or a lighting device is proposed. The lighting means or the lighting device according to the third aspect can have at least one optical element according to the second aspect and / or a device according to the first aspect.

[0034] Further features, characteristics, advantages and possible modifications will become clear to a person skilled in the art from the following descriptions, which refer to the accompanying drawings.

[0035] Fig.l shows a variant of an embodiment of a device for guiding light.

[0036] Fig.2 shows a further variant of an embodiment of the device for guiding light.

[0037] Fig.2a shows a further variant of an embodiment of the device for guiding light.

[0038] Fig.3 shows an example of an optical element.

[0039] Fig. 1 shows a variant of an embodiment of the device 100 for guiding light in a perspective sectional view. The device 100 has a first end 10 and a second end 30. A receiving area 40 is arranged between the first end 10 and the second end 30. A trumpet-shaped light guide body 20 is arranged between the receiving area 40 and the second end 30. In the example shown, the trumpet-shaped light guide body 20 and the receiving section 40 are formed as a single piece.

[0040] In the example shown, said receiving section 40 is cylindrical and has an inner side and an outer side. The receiving section 40 encloses an inner region. In the inner region, i.e., inside the receiving section 40, a storage edge 42 can be seen. In the outer side of the receiving section 44, a first guide groove 44 is recessed, in the variant shown. The guide groove 44 is oriented along a circumference of the receiving section 40. The reference symbol 44 with the two associated line markers indicates the outer boundaries of said guide groove 44. Three passages 46a, 46b, 46c can be seen in this guide groove 44. An optical element OE rests on the storage edge 42. To secure the optical element OE, an annular lock 48 is inserted into the guide groove 44.In the variant shown, the securing device 48 has three protrusions 48a, 48b, 48c, each of which extends through one of the three passages 46a, 46b, 46c. The protrusions 48a, 48b, 48c, together with the corresponding passages 46a, 46b, 46c, form a positive fit acting in the radial direction and in the longitudinal direction of the device. The protrusions 48a, 48b, 48c, now located in the interior of the receiving section 40, secure the optical element OE against falling out of the first end 10 along a longitudinal axis LA. In the variant shown, a surface of an inner side 24 of the light guide body 20 is designed in such a way that diffuse reflection is reduced.

[0041] Figure 2 shows a further variant of an embodiment of the light-guiding device. The device 100 shown has a first end 10 and a second end 30. A receiving area 40 is arranged between the first end 10 and the second end 30. The light-guiding body 20 is arranged between the receiving area 40 and the second end 30. In the variant shown, the trumpet-shaped light-guiding body 20 and the receiving section 40 are formed as a single piece.

[0042] The receiving section 40 has a storage edge 42 and an edge 50. Two securing locking regions 51 and two guide aid parts 54 are formed from the edge 50 and the storage edge 42, of which only one is provided with a reference symbol for the sake of clarity. The guide aid parts 54 are arranged along a circumference of the receiving section 40, on the storage edge 42 and project beyond the storage edge 42 along the longitudinal axis in the direction of the first end 10. The at least two securing locking regions 51 each have a holding web 53 and a locking web 52. In the variant shown, the locking web 52 is arranged along the circumference of the receiving section 40. The locking web 52 is movable along the longitudinal axis LA and is connected to the edge 50 and the storage edge 42 via a fixed end.

[0043] Along the circumference of the receiving section 40 and opposite a loose end of the locking web 52, the holding web 53 is connected to the edge 50 and the storage edge 42. The holding web 53 is arranged along the circumference of the receiving section 40 and at a first distance along the longitudinal axis LA from the locking web 52. A loose end of the holding web 53 points along the circumference of the receiving section 40 toward one of the guide aid parts 54. The two loose ends of the locking and holding webs 52, 53 point in different directions along the circumference. The holding web 53 and the guide aid part project equally beyond the storage edge 42 in the longitudinal axis direction.

[0044] In the structures just described, an optical element OE can be secured and releasably locked with corresponding guide pieces FS. The guide pieces FS each have a height along the longitudinal axis LA of the optical element OE, which approximately corresponds to a first distance (along the longitudinal axis LA) between the locking web 52 and the holding web 53. The guide pieces FS have a length along a circumference of the optical element OE, which approximately corresponds to a second distance (along the circumference of the receiving section 40) between the guide holding piece 54 and the holding web 53.

[0045] By moving the optical element OE and the device 100 toward each other on a common axis LA, a guide piece FS of the optical element OE is introduced into the second distance. The optical element OE is moved further along the longitudinal axis LA until the guide piece FS and / or the optical element OE comes into contact with the storage edge 42. Then, with an opposite rotation of the optical element OE and the device 100 about the longitudinal axis LA, the guide pieces FS are guided between the holding and locking webs 52, 53 until the locking web 52 clamps the guide piece FS against the holding web 53, thus securing the optical element OE.

[0046] Additionally, the optical element OE can be releasably locked (not shown for reasons of clarity). For this purpose, a recess in the longitudinal axis direction can be formed on the loose end of the locking web 52, which engages in a complementary recess on the guide piece FS of the optical element OE when the optical element OE is moved / rotated about the common longitudinal axis LA. Alternatively, a further recess can be arranged on the retaining web, which engages in a further complementary recess on the guide piece FS.

[0047] Fig. 2a shows a further variant of an embodiment of the device 300 for guiding light. The device 300 shown has a first end 310 and a second end 330. A receiving area 340 is arranged between the first end 310 and the second end 330. A light-guiding body 320 is arranged between the receiving area 340 and the second end 330. In the variant shown, the light-guiding body 320 and the receiving section 340 are formed as a single piece. The receiving section 340 accommodates an optical element OA-c, which in turn accommodates a second optical element OA-b. The second optical element in turn accommodates a third optical element OA-a. The third optical element OA-a accommodates a light source which has an optical system, in particular a lens LS, and a light source LQ.The light source LQ is configured to emit light via the lens LS, here as an exemplary representation of two beams LI, L2, into the light guide body 320. The light guide body 320 is configured to reduce the light LIS scattered within it. For this purpose, the inner side 324 of the light guide body 320 has a diffuse reflection-reducing surface. In addition to reducing the scattered light LIS, the light guide body 320 is configured to direct reflected light L1R, L2R into a radiation angle range 327 of the illuminant, in particular a radiation angle that is predetermined solely by the lens. In other words, a radiation angle range 327 is predetermined by the illuminant, and the light guide body 320, in particular its inner side 324, is configured, in particular shaped, to reflect reflected light L1R, L2R into this radiation angle range 327.Outside the radiation angle range 327, at least almost no reflected light is emitted. In other words, the reflected light L1R, LR2, which can be understood as directed reflection, is directed at least almost exclusively into the radiation angle 327 of the illuminant, in particular the lens. The scattered light LIS, which can also be understood as diffuse light, is greatly minimized due to the diffuse reflection-reducing surface. In addition, the scattered light LIS is shaded by the light guide body 320. This creates a sharply defined illumination spot. For reasons of clarity, the scattered light for the beam path L2 to L2R is not shown. The details described with reference to Figure 2a, in particular with regard to the radiation angle 327, can be applied accordingly to Figures 1 and 2.In a further variant of the embodiment, the optics, comprising a light source and an optical system, can be mounted in a common housing. The light source, in particular the lens, is free of any direct connection to the light guide body.

[0048] Fig. 3 shows a variant of an optical element 200, which is configured to be accommodated in the device according to Fig. 2 or to accommodate further optical elements of the same design. The optical element 200 has a first side 210, a second side 220, an edge 230, and a storage edge 242. Guide pieces 256a, 256b are formed from the edge 230. These guide pieces serve to secure and releasably lock the optical element 200 in / on the device 100 according to the description in the preceding Fig. 2.

[0049] Furthermore, the edge 230 and the storage edge 242 have the same structures that enable the device of Fig. 2 to accommodate an optical element. Two securing locking regions 251 and two guide aid parts 254 are formed from the edge 230 and storage edge 242, of which only one is provided with a reference symbol for the sake of clarity. The guide aid parts 254 are arranged along a circumference of the optical element 200 on the storage edge 242 and project beyond the storage edge 242 along a longitudinal axis LA toward the first side 210.

[0050] The at least two securing locking regions 251 each have a holding web 253 and a locking web 252. In the variant shown, the locking web 252 is arranged along the circumference of the optical element 200. The locking web 252 is movable along the longitudinal axis LA and is connected to the edge 230 and the storage edge 242 via a fixed end.

[0051] Along the circumference of the optical element 200 and opposite a loose end of the locking web 252, the holding web 253 is connected to the edge 230 and the storage edge 242. The holding web 253 is arranged along the circumference of the optical element 200 and at a distance along the longitudinal axis LA from the locking web 252. A loose end of the holding web 253 has one of the guide aid parts 254 along the circumference of the optical element 200. The two loose ends of the locking and holding webs 252, 253 point in different directions along the circumference of the optical element.

[0052] In the structures just described, a further optical element (not shown) can be secured and releasably locked using appropriate guide pieces. The movement sequence for receiving, securing, and releasably locking a further optical element is similar to the receiving, securing, and releasably locking of an optical element OE by the device 100 of Fig. 2.

Claims

Claims 1. A device (100) for guiding light emitted by a luminous means for illuminating an environment, the device (100) comprising: - a first end (10) facing the illuminant, which is adapted to receive and emit light, - a light guide body (20) which is designed to receive the light emitted by the first end and to emit it to the environment, wherein the first end (10) is further designed to receive at least one optical element (OE) which is designed to change at least one property of the light emitted by the illuminant.

2. The device (100) according to claim 1, which is further configured to be connected to the illuminant with the first end first, in particular to be placed on or in the illuminant.

3. The device (100) according to one of the preceding claims, further comprising a receiving section (40) arranged between the first end (10) and the light guide body (20), which is configured to receive and secure and / or releasably lock at least one optical element (OE).

4. The device (100) according to claim 3, wherein the, in particular cylindrical, receiving section (40) comprises: - a storage edge (42), in particular an inner one, on which a first optical element (OE) rests, - a guide groove (44), in particular oriented along a circumference of the receiving section (40), with at least two or three openings (46a), wherein a first, in particular annular, securing means (48) with at least two or three, in particular inwardly directed, bulges (48a) can be or is inserted into the guide groove (44), wherein the bulges (48a) can be or are guided through the openings (46a), and the bulges (48a) projecting through the opening (46a) secure the first optical element (OE) lying on the storage edge (42).

5. The device (100) according to claim 4, wherein the receiving section (40) has at least one further guide groove with two or three openings along a longitudinal axis (LA), and a further optical element rests on the bulges of the first securing element (48), which is or is secured by a further securing element inserted into the further guide groove.

6. The device (100) according to claim 3, wherein the, in particular cylindrical, receiving section (40) comprises: - an edge (50) and a storage edge (42), - at least two securing locking regions (51), wherein at least two guide pieces (FS) of an optical element (OE) are each insertable or are inserted into a securing locking region (51) and the optical element (OE) is securable or is secured and / or releasably lockable or locked.

7. The device (100) according to claim 6, wherein the at least two securing locking areas each comprise: - at least one locking web (52), in particular oriented / shaped along a circumference of the receiving section (40) and / or movable along a longitudinal axis of the receiving section, - at least one holding web (53), in particular each arranged / shaped at a first distance along the longitudinal axis of the receiving section, opposite the locking web, wherein at least two guide pieces (FS) of an optical element (OE) can be inserted or inserted and clamped or clamped between the locking web (52) and the holding web (53) and the optical element (OE) can be secured or are secured in / on / at the device, in particular the edge.

8. The device (100) according to claim 7, wherein the at least two locking webs (52) each have a recess / shaped portion, in particular in the longitudinal axis direction of the receiving section (40) at the end of the locking web (52), the guide pieces (FS) each have a recess / shaped portion complementary to the recess / shaped portion, which recess / shaped portion can engage in the recess / shaped portion of the respective locking web (53) when the at least two guide pieces (FS) of the optical element (OE) are each inserted between the locking web (52) and the holding web (53) and be moved to a locking position, wherein the optical element (OE) is securable in the locking position or is secured and releasably lockable or locked.

9. The device (100) according to one of claims 7 or 8, wherein the receiving section (40) has at least two guide aid parts (54), in particular formed from the edge (50) and the storage edge (42), which are each arranged along the circumference of the receiving section (40) between the at least two holding webs (53), in particular on the storage edge, wherein a second distance along the circumference between the guide aid part (54) and the holding web (53) corresponds approximately to a length of the guide piece (FS) along a circumference of the optical element (OE),wherein the at least two guide pieces (FS) can be passed or are moved between the guide aid part (54) and the holding web (53) by a movement of the optical element (OE) and the device (100) along a common longitudinal axis (LA) relative to one another, and the at least two guide pieces (FS) can be inserted or are inserted between the locking web (52) and the holding web (53) by a mutual rotation of the optical element (OE) and the device (100) about the common longitudinal axis (LA).

10. The device (100) according to any one of claims 1 to 9, wherein the light guide body (20) has an outer side (22) and an inner side (24), wherein the outer side (22) is adapted to be fastened in the illuminant.

11. The device (100) according to one of claims 1 to 10, wherein the light guide body (20) has an outer side (22) and an inner side (24), wherein the outer side (24) has a thread with which the device (100) can be screwed or screwed into a lighting means and / or the outer side (22) has recesses / formations which can be clamped or clamped in complementary formations / recesses arranged in the lighting means.

12. The device according to one of claims 1 to 11, wherein the light guide body (20), in particular an inner side (24) of the light guide body (20), is designed to: - a reflected light (L1R)(L2R), which is produced, for example, when the light emitted by the illuminant to direct the light that strikes the inside (24) of the light-guiding body (20) at least almost exclusively into a radiation angle range (327) of the illuminant; and / or to minimize scattered light (LIS), which arises, for example, when the light emitted by the illuminant strikes the inside (24) of the light-guiding body (20).

13. The device (100) according to one of claims 1 to 12, wherein the light guide body (20) has an outer side (22) and an inner side (24), wherein the inner side (24) has a diffuse reflection-reducing surface and / or the light guide body has different materials.

14. The device (100) according to claim 13, wherein the surface is designed as a black, in particular light-absorbing surface or as a surface provided with light-absorbing layers, or as a white surface, and / or the surface is designed as a polished, in particular highly polished, surface.

15. The device (100) according to claim 13 or 14, wherein the surface is formed as a metallic paint, in particular with gold, steel, copper, aluminum, silver, bronze, anthracite or platinum, or the surface is coated with metal.

16. The device (100) according to one of claims 1 to 15, wherein the light guide body (20), in particular the inner side (24), corresponds to a shape of a, in particular trumpet-shaped, funnel, wherein the first end has a smaller diameter than a second end of the funnel.

17. An optical element (200) for receiving a light emitted by a light source, which is designed to change at least one light property of the light and to emit the changed light, wherein the optical element (200) is designed to receive a further optical element and to be received by a device for beam guidance, in particular by a device according to one of claims 1 to 16.

18. The optical element (200) according to claim 17, wherein a receiving structure of the device for receiving the optical element (200), a receiving structure of the optical element (200) for receiving a further optical element and / or the optical element (200) can be connected to or to at least two or to a plurality of optical elements.

19. The optical element (200) according to claim 17 or 18, wherein the optical element comprises: - a first page (210), - a second page (220), - a storage edge (242), - an edge (230) connecting the first and second sides, and at least two guide pieces (256a, 256b) arranged on the edge, in particular formed from the edge, which guide pieces can each be or are inserted into a safety locking area of ​​the beam guiding device.

20. The optical element (200) of claim 19, wherein the edge (230) comprises: - at least two securing locking regions (251), wherein at least two guide pieces of a further optical element are each insertable or inserted into the securing locking regions (251) and the further optical element is securable or secured and / or releasably lockable or locked in / on the optical element.

21. The optical element (200) according to claim 20, wherein the at least two securing locking regions (251) each comprise: - at least one locking web (252), in particular arranged / shaped along a circumference of the edge (230) and / or movable along a longitudinal axis (LA) of the optical element (200), - at least one holding web (53), in particular each arranged / shaped at a first distance along the longitudinal axis of the receiving section, opposite the locking web, wherein at least two guide pieces of a further optical element can be inserted or inserted and clamped or clamped between the locking web (252) and holding web (253) and the further optical element can be secured or is secured, in particular on / at / in the optical element (200).

22. The optical element (200) according to claim 21, wherein the at least two locking webs (252) each have a formation / recess, in particular along the longitudinal axis (LA) of the optical element (200) at the end of the locking web, wherein the guide pieces of the further optical element each have a recess / formation complementary to the formation / recess, which engage in the formation / recess of the respective locking web when the at least two guide pieces of the further optical element are each inserted between the locking web and the holding web and moved to a locking position, wherein the further optical element is securable or can be secured and releasably locked or locked in the locking position.

23. The optical element (200) according to claim 21 or 22, wherein the edge (230) has at least two guide aid parts (254), each arranged along the circumference of the optical element (200) between the at least two locking webs, in particular on the storage edge (242), wherein a second distance along the circumference between the guide aid part (254) and the holding web (253) corresponds approximately to a length of a guide piece along a circumference of another optical element,wherein the at least two guide pieces of the further optical element between the guide aid part (254) and the holding web (253) is effected by a movement of the optical element (200) and the further optical element along a common longitudinal axis (LA) relative to one another, and the at least two guide pieces between the locking web (252) and the holding web (253) are insertable or can be inserted by a mutual rotation about the common longitudinal axis of the optical element (200) and the further optical element.

24. A lighting means or a lighting device comprising at least one optical element (200) according to one of claims 17 to 23 and / or a device (100) for guiding light according to one of claims 1 to 16.

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