Optical element having lamination portion

Abstract

The invention relates to an optical element (1) for influencing light radiated by light sources, wherein the optical element (1) is integral and has: at least one light entry portion (2) for coupling light from the light source into the optical element (1); a front side (3) for coupling out the coupled-in light to emit light from the optical element (1); a rear side which faces away from the front side (3); at least one structural portion (6) which is provided on the rear side (4) to mechanically cooperate with further elements and / or for production reasons; and a lamination portion (7) which has a thickness (D) between the front side (3) and the rear side (4) and extends transversely to the thickness (D) in an extension direction (E). The thickness (D) of the lamination portion (7) changes periodically in the extension direction (E). The at least one structural portion (6) is provided in a region of the lamination portion (7).

Description

[0001] Optical element with lamination section

[0002] Description:

[0003] The present invention relates to an optical element for influencing light emitted by light sources.

[0004] Such optical elements 101 (see Figs. 5 and 6) are generally known from the prior art. These optical elements 101, when combined with a luminaire 100, serve to appropriately influence the light emitted by the light sources of the luminaire 100. The influence can, for example, consist of deflection, widening, narrowing, rectification, scattering, and the like, among many other things. Such optical elements 101 are designed to guide appropriate light through them and are therefore generally made entirely of a translucent material, such as glass or translucent plastic.

[0005] Such optical elements 101 frequently have structural regions that are not necessary or even disruptive to the optical function of the optical element, but are required for other purposes or arise due to manufacturing or cannot be avoided. These may be, for example, fastening regions for fastening the optical element, positioning elements for positioning the optical element or components to be provided thereon (e.g., an LED module), fastening regions for fastening other elements (e.g., reflectors, lamps, and the like), or even manufacturing-related injection points during the production of the optical element using an injection molding process.

[0006] Depending on the design of the optical element 101, it may happen that any structural regions, even if they are provided on a side facing away from the light emission, are present in a region of the optical element 101, so that they can partially influence the light guidance of the light to be influenced by the optical element 101, at least in the region of the structural regions, and / or impair the optical appearance of the optical element 101 or the luminaire 100 equipped therewith, as can be seen, for example, in Fig. 5 (therein the upper luminaire 100) or Fig. 6 (therein the lower luminaire 100). This applies in particular to small or narrow optical elements 101 or to optical elements 101 which, due to their optical function, have only limited or no alternative space for providing any structural regions without these having a disruptive effect on the appearance of the optical element 101 during operation.It is also conceivable that the position of the structural regions—regardless of the overall size of the optical element 101—can be provided in particular or only in an optically relevant region due to the mechanical conditions. In these and other possible cases, the structural regions must be provided accordingly in optically relevant regions. The interaction of these structural regions with the light to be influenced by the optical element 101 can then, for example, lead to dark spots or bright light spots on the optical element 101, as shown by way of example in Figs. 5 and 6, and thus impair its appearance.

[0007] It is therefore an object of the present invention to provide an optical element and a luminaire equipped therewith, which conceal any impairment caused by corresponding structural sections and thus lead to an overall more harmonious appearance, in particular during operation of a luminaire equipped with the optical element.

[0008] This object is achieved by the subject matter of the independent claims. The dependent claims develop the central idea of ​​the present invention in a particularly advantageous manner.

[0009] According to a first aspect, the present invention relates to an optical element for influencing light emitted by light sources. The optical element is integrally formed. The optical element has at least one light entry section for coupling light from the light sources into the optical element. Furthermore, the optical element has a front side for coupling out the coupled-in light for light emission from the optical element. Furthermore, the optical element has a rear side facing away from the front side. In addition, the optical element has at least one structural section which is provided on the rear side for mechanical cooperation with other elements and / or is provided for manufacturing reasons. Furthermore, the optical element has a lamination section which has a thickness between the front side and the rear side and extends transversely to the thickness along a direction of extent.The thickness of the lamination section changes periodically along the direction of extension. The at least one structural section is provided in a region of the lamination section.

[0010] By providing a corresponding lamination section, a regular structure is created, which exhibits or generates a correspondingly regular appearance of the optical element, particularly during operation. Thus, a defined interference structure is provided, which, due to its periodic change, produces a harmonious appearance. Since the structural sections are now provided in this lamination section, they are less noticeable, or even no longer noticeable, both outside of and during operation when the optical element is used; this is particularly true compared to a case where the same optical element were provided without this lamination section or lamination structure.It is thus possible in a simple manner to provide any structural sections in optically more or less relevant positions where they are particularly advantageous for technical reasons or due to manufacturing reasons, without these ultimately (significantly) impairing the appearance of the optical element.

[0011] The at least one structural section can preferably be provided in a region of the concealing section that corresponds to a defined functional value of the period (i.e., the period of the (periodic) thickness change). In this way, the structural section can be particularly preferably integrated in an optimized manner into the light emission of the optical element and thus into its optical appearance, so that its presence can be concealed even better.

[0012] The optical element can preferably comprise several of the structural sections. In this way, the desired redundancy can be created; for example, for fastening, positioning, etc., using the structural sections. Alternatively or additionally, it is possible to provide multiple functions using corresponding structural sections on / in the optical element, all of which can then be concealed accordingly.

[0013] At least some or all of the plurality of structural sections can preferably be provided distributed along the lamination section. Since the lamination section extends along the direction of extension, even spatially distributed structural sections can be easily laminated.

[0014] At least some or all of the plurality of structural sections can preferably all be provided in regions of the concealment section that correspond to the same defined functional value of the period. This makes it possible for the concealment effect of all relevant structural sections to be, at best, the same, creating an overall particularly harmonious appearance, allowing the structural sections to be concealed particularly well.

[0015] The thickness of the lamination section can preferably vary sinusoidally along the direction of extension. This allows for a harmonious contour and thus a harmonious appearance of the lamination section. Furthermore, a lamination section provided in this way is particularly easy to manufacture. In principle, any other periodic change in thickness along the direction of extension of the lamination section is also conceivable, such as, in particular, smooth or stepped thickness changes.

[0016] The thickness of the lamination section can change periodically along the direction of extension at least between a greater thickness and a smaller thickness, wherein the structural section or, if several are present, the structural sections are each provided with the greater thickness or alternatively with the smaller thickness in a region of the lamination section. In this way, on the one hand, a harmonious appearance and, on the other hand, an optimized lamination of the corresponding structural sections can be made possible. Depending on the geometric design of the structural section, its presence can be specifically concealed due to the corresponding light guidance of the optical element. The greater thickness can preferably be a maximum thickness of the lamination section. The smaller thickness can preferably be a minimum thickness of the lamination section. In this way, the structural sections can be provided in maximum orminimal thickness ranges of the lamination section so that their presence can be optically concealed to a high degree.

[0017] The lamination section can preferably extend in a plane on the front side. In this case, the lamination section on the back side is configured to periodically vary in thickness or height relative to the front side along the direction of extension. Such a configuration is advantageous, for example, in a TIR lens-like optical element, in order to advantageously lamination the structural sections on its back side.

[0018] Alternatively, it is also optionally conceivable for the lamination section to extend in one plane on the rear side. In this case, the lamination section on the front side of the optical element has a periodically changing thickness or height relative to the rear side along the direction of extension. Such a configuration is advantageous, for example, in so-called bubble lenses in order to achieve the best possible lamination corresponding to the structural section provided on the rear side.

[0019] In principle, the optical element can be any type of optical element, such as TIR lenses, bubble lenses, symmetric lenses, asymmetric lenses and the like.

[0020] Preferably, the front and back sides limit the thickness of the lamination section. The lamination section is thus completely defined by the front and back sides and thus spatially optimally designed. This allows for a flat optical element with high efficiency—including the lamination.

[0021] The light entry section can preferably have a lens pot. This allows highly effective coupling of light emitted by a light source into the optical element, thus achieving a high overall efficiency of a luminaire operated with this optical element. Other options for forming the light entry sections are also conceivable, particularly through structural design and / or surface treatment of the optical element.

[0022] Preferably, an end face of the optical element, connecting the front and rear sides and preferably extending circumferentially, can comprise or form the light entry section. For example, a corresponding end face can directly form the light entry section and, for example, be coupled in at any desired location. It is also conceivable for the end face to comprise corresponding light entry sections, for example, in the form of lens cups or the like.

[0023] Alternatively or additionally, it is conceivable for the rear side to have the light entry section. This can be achieved, for example, by appropriate structural design of the rear side. For example, the light entry area can be formed in the form of the lens pots on the rear side as described above. Other options for forming the light entry sections are also conceivable, as already described.

[0024] Preferably, several of the light entry sections can be arranged in at least one row along a longitudinal axis of the arrangement. The optical element thus preferably comprises a lens array.

[0025] Several of the light entry sections can preferably also be arranged in several rows, each along a longitudinal axis of the arrangement; these are particularly preferably arranged on the rear side. Thus, the optical element can have several lens arrays and particularly preferably form a lens grid. The optical element can thus be designed in an elongated shape and serve, for example, as the optical element of a strip light.

[0026] The longitudinal axes of the multiple rows can preferably be arranged parallel to one another and preferably all in one plane. This allows a defined lens grid to be provided and an overall flat optical element to be provided. The optical element can thus also be designed in an elongated shape and, for example, be provided as an optical element of a strip light with a particularly defined light guide.

[0027] Each two adjacent rows of the plurality of rows can preferably be connected to one another by an integral connecting section of the optical element. This enables a stable design of the optical element.

[0028] The connecting section may preferably comprise the lamination section, so that the lamination section can be provided in a simple manner in a defined area and particularly preferably in a less optically relevant area.

[0029] The lamination section can preferably form the connecting section. This allows the lamination section to be provided in a particularly space-saving and easy-to-manufacture manner.

[0030] The light entry sections can preferably be evenly distributed per row along the longitudinal axis of the arrangement, preferably at a regular spacing. In this way, the functions to be provided by the structural sections can be defined and distributed, and thus preferably optimized. The regular spacing can particularly preferably correspond to X times the period length of the period of the thickness change (where X is an element of the natural numbers; i.e., with XGN). Thus, the optical influences of the structural sections can be significantly reduced or minimized, while simultaneously improving or maximizing their functional properties.

[0031] Each of the light entry sections can preferably be adjacent to a region of the lamination section with the greater (or maximum) thickness. Alternatively, it is also conceivable for each of the light entry sections to be adjacent to a region of the lamination section with the smaller (or minimum) thickness. Thus, the structural sections are highly coordinated with the multiple light entry sections via the regularity of the lamination section, resulting in a particularly harmonious optical appearance and thus a high degree of lamination. The lamination section or its extension direction can preferably extend along a lamination longitudinal axis. The rectilinear extension of the lamination section can thus create a correspondingly harmonious appearance if required. This is particularly suitable for elongated or large-area optical elements.

[0032] Particularly preferably, the longitudinal axis of the lamination and the longitudinal axis(es) of the arrangement are aligned parallel to one another, allowing for a space-saving provision of the lamination section and thus an overall compact optical element. Furthermore, this allows for a particularly harmonious appearance of the corresponding optical element.

[0033] The structural section can preferably extend away from the rear side. This allows the structural section to be easily accessible for its defined purpose, for example, for assembly, fastening, or positioning purposes.

[0034] The structural section can be a solid or a hollow body. For example, it is conceivable that the structural section is provided as a solid body to form a positioning pin or a snap hook. As a hollow body, the structural section—for example, in the form of a hollow cylinder or screw dome—can serve to accommodate a fastening element, such as a screw, for attaching components to the optical element or for mounting the optical element itself.

[0035] The structural section can preferably have a convex and / or concave outer surface, which preferably directs the coupled-in light in a defined manner. In this way, the structural section itself can have a supplementary light-directing function, so that its presence can be further concealed and consequently the efficiency of the optical element can be further increased overall. The structural section can preferably have at least one or a combination of the following group: a mounting section for fastening the optical element, a positioning pin, a fastening section for fastening lighting components or other further elements, and / or an injection point, for example resulting from injection-molding of the optical element.

[0036] The optical element can preferably be manufactured integrally from a light-transmitting material, such as optical plastic, preferably by an injection molding or extrusion process, or from glass. Thus, the optical element can be provided simply and optically optimized according to the given requirements.

[0037] According to a further aspect, the present invention further relates to a luminaire comprising an optical element according to the present invention and a lamp having at least one light source. In this case, the lamp is arranged relative to the optical element such that light emitted by the light source(s) can be coupled into the optical element via the light entry section(s), and the light thus coupled can then be emitted via the front side. Thus, a luminaire can be provided which utilizes all the advantages of the optical element according to the invention, and thus corresponding structural sections can be effectively concealed, resulting in an overall harmonious appearance of the luminaire.

[0038] The illuminant can preferably be or comprise an LED illuminant with at least one LED as the light source. This provides an effective, long-lasting, and economical illuminant that also requires only a small amount of installation space, allowing the luminaire to be designed to be particularly small and flat.

[0039] The light source and / or other luminaire components, such as reflectors, can preferably be positioned and / or fastened using the structural sections. The structural sections can thus be used in a variety of ways to provide a highly effective luminaire. Furthermore, other elements that can be fastened using the structural sections are also conceivable, such as sensors and the like. The luminaire can preferably further comprise a luminaire housing, wherein the optical element in this case is preferably mounted on the luminaire housing via the structural sections (or a part thereof). In this way, a structural section used for mounting the optical element can be optically concealed in a simple manner.

[0040] Further embodiments and advantages of the present invention are described below with reference to the figures of the accompanying drawings. They show:

[0041] Fig. 1 is a perspective view of an optical element according to a first embodiment of the present invention,

[0042] Fig. 2 is a perspective detailed view of an optical element according to a second embodiment of the present invention,

[0043] Fig. 3 is a detailed sectional view of an optical element according to a third embodiment of the present invention,

[0044] Fig. 4 is a plan view of the optical element according to Fig. 3,

[0045] Fig. 5 shows a comparison of a luminaire equipped with a conventional optical element (top) and a luminaire equipped with the optical element according to the invention (bottom), and

[0046] Fig. 6 is a perspective view of the luminaire equipped with the conventional optical element (bottom) and the luminaire equipped with the optical element according to the invention (top) according to Figure 5.

[0047] The figures show different embodiments of an optical element 1 according to the invention for influencing light emitted by light sources. The optical element 1 is of integral design. The optical element 1 can preferably be manufactured integrally from a translucent material, such as translucent plastic (preferably using an injection molding process or a continuous casting process) or from glass. The optical element can have at least one, and here numerous, light entry sections 2 for coupling light from the light sources into the optical element 1. In the exemplary embodiments illustrated here, the light entry sections 2 each have a lens pot 20, which is designed here, by way of example, such that it can at least partially accommodate a light source, such as an LED, of a lighting device, in order to thus effectively couple the light emitted by this light source into the optical element 1.

[0048] The optical element 1 further comprises a front side 3 for coupling out the coupled-in light for light emission from the optical element 1. The front side 3 can be designed in any desired manner. For example, it can have a flat light emission surface extending in a plane. Alternatively, the front side 3 can also be structured, as shown in the present exemplary embodiments, and can also have defined deflection sections and the like in addition to coupling-out sections. The front side 3 can have light-influencing structures, such as a surface contour, surface damage and the like, or a defined geometry, for example for light bundling, light expansion, light direction, light scattering and the like.

[0049] The optical element 1 further comprises a rear side 4 facing away from the front side 3. In the exemplary embodiments illustrated here, the rear side 4 comprises the light entry section(s) 2. Alternatively or additionally, it is also conceivable for a front side connecting the front side 3 and the rear side 4 and preferably extending circumferentially to comprise or form the light entry section(s) 2.

[0050] As shown in the illustrated embodiments, for example in Figures 1 to 4, a plurality of the light entry sections 2 can be arranged in at least one row Ri, R2 along an arrangement longitudinal axis A. In the exemplary embodiments illustrated here, a plurality of the light entry sections 2 are arranged in a plurality of rows Ri, R2, each along an arrangement longitudinal axis A; this is preferably on the rear side 3 of the optical element 1. As can also be seen from the illustrated embodiments, the arrangement longitudinal axes A of the plurality of rows Ri, R2 can be arranged parallel to one another and preferably all in one plane. The light entry sections 2 can be arranged uniformly distributed in each row Ri, R2 along the arrangement longitudinal axis A, preferably at a regular distance, as can be seen, for example, in Figure 1.As can be seen from Figures 1 and 2, the regular spacing can particularly preferably correspond to X times the period length of the thickness change period, where X is an element of the natural numbers (XGN). Figure 2 graphically highlights two adjacent thickness change periods as an example.

[0051] Each of the light entry sections 2 can preferably be adjacent to a region of the lamination section 7 with the larger—for example, the maximum—thickness Di. Alternatively, it is also conceivable that, as can be seen in Figures 1 and 2, each of the light entry sections 2 is adjacent to a region of the lamination section 7 with the smaller—here, the minimum—thickness Dl. This can also be seen in particular in Figure 4.

[0052] As can be seen in particular from Figures 1 to 4, two adjacent rows of the plurality of rows Ri, R2 can be connected to one another by an integral connecting section 5 of the optical element 1.

[0053] The optical element 1 further comprises a structural section 6, which is provided on the rear side 4 for mechanical cooperation with other elements and / or due to manufacturing. The structural section 6 can extend away from the rear side 3, as shown here. The structural section 6 can be a solid body, as shown in Fig. 1, for example, or a hollow body, as shown in Figs. 1 and 2. The structural section 6 can have a convex and / or concave outer surface, which preferably directs the coupled-in light in a defined manner.

[0054] The structural section 6 can serve for mechanical cooperation with other elements, thus forming, for example, a mounting section for securing the optical element 1, a positioning pin, for example, for positioning and aligning lighting components or other elements, or a fastening section for securing lighting components or other elements. The structural section 6 can also be provided as described during production and, for example, form an injection point for an optical element 1 manufactured by injection molding.

[0055] The optical element 1 further comprises a lamination section 7, which has a thickness D between the front side 3 and the back side 4 and extends transversely to the thickness D along an extension direction E (cf. in particular Fig. 3 in conjunction with Figs. 1, 2 and 4). As shown in the exemplary embodiments, the lamination section 7 or its extension direction E can extend along a lamination longitudinal axis K; thus, in a straight line. The lamination longitudinal axis K and the arrangement longitudinal axis(es) A ​​can, as can be seen in the figures, be aligned parallel to one another. As can be seen in particular from Figs. 1 to 4, the connecting section 5 can comprise the lamination section 7, or the lamination section 7 can form the connecting section 5.

[0056] As can be seen in particular from Figures 1 to 4, the thickness D of the lamination section 7 changes periodically along the extension direction E. In the illustrated embodiments, the thickness D of the lamination section 7 changes sinusoidally along the extension direction E.

[0057] The thickness D of the lamination section 7 preferably changes periodically along the extension direction E, at least between a greater thickness D1 and a smaller thickness D2. The greater thickness D1 can, as shown here, preferably be a maximum thickness of the lamination section 7. The smaller thickness D2 can, as shown here, be a minimum thickness of the lamination section 7.

[0058] The front side 3 and the back side 4 can preferably limit the thickness D of the lamination section 7, as shown in the illustrated embodiments. The lamination section 7 can preferably extend in one plane on the side of the front side 3, as can be seen in particular in Fig. 3. Alternatively, it is also conceivable for the lamination section 7 to extend in one plane on the side of the back side 4 (not shown). The at least one structural section 6 is provided in a region of the lamination section 7.

[0059] To achieve a desired optical lamination effect, the at least one or, in this case, the plurality of structural sections 6 can be provided in a region of the lamination section 7 that corresponds to a defined functional value of the period of the thickness change. In the present case, this functional value of the period is a local, and in this case, the absolute maximum, of the period of the thickness change; thus, the region of the lamination section 7 with the larger or maximum thickness Di. Alternatively, it is also conceivable for the structural section 6 or the structural sections 6 to be provided in a region of the lamination section 7 with the smaller or minimum thickness D2.

[0060] The optical element can, as already described and illustrated in the exemplary embodiments, have a plurality of structural sections 6. At least some or, as illustrated here, all of the plurality of structural sections 6 can preferably be provided distributed along the lamination section 7; this is preferably distributed evenly. In the illustrated exemplary embodiments, for example, all structural sections 6 are provided in a region of the lamination section 7 with the greater or maximum thickness D1; ​​thus the defined functional value of a local or, here, absolute maximum of the period of the thickness change. Thus, the relevant structural sections 6 can all be provided in regions of the lamination section 7 that correspond to the same defined functional value.

[0061] With reference to Figures 5 and 6, the present invention further relates to a luminaire 10, which, in addition to the optical element 1 according to the invention, further comprises a lamp with at least one light source. The lamp can be, for example, an LED lamp with at least one or more LEDs as light source(s).

[0062] The illuminant is arranged relative to the optical element 1 such that light emitted by the light source(s) is coupled into the optical element 1 via the light entry section(s) 2, and the thus coupled light is then emitted via the front side 3. The illuminant and / or other elements or luminaire components, such as reflectors, can preferably be positioned and / or secured by means of the structural sections 6.

[0063] The luminaire 10 may further comprise a luminaire housing not shown here, wherein the optical element 1 may be mounted on the luminaire housing via the structural sections 6.

[0064] The present invention is not limited to the embodiments described above, as long as it is encompassed by the subject matter of the following claims.

Claims

Claims: Optical element (1) for influencing light emitted by light sources, wherein the optical element (1) is integrally formed and comprises: at least one light entry section (2) for coupling light from the light sources into the optical element (1), a front side (3) for coupling out the coupled light for light emission from the optical element (1), a rear side (4) facing away from the front side (3), at least one structural section (6) which is provided on the rear side (4) for mechanical cooperation with further elements and / or due to manufacturing, a lamination section (7) which has a thickness (D) between the front side (3) and the rear side (4) and extends transversely to the thickness (D) along an extension direction (E), wherein the thickness (D) of the lamination section (7) changes periodically along the extension direction (E),and wherein the at least one structural section (6) is provided in a region of the lamination section (7). Optical element (1) according to claim 1, wherein the at least one structural section (6) is provided in a region of the lamination section (7) that corresponds to a defined functional value of the period. Optical element (1) according to one of the preceding claims, wherein the optical element (1) has a plurality of the structural sections (6). Optical element (1) according to claim 3, wherein at least some or all of the plurality of structural sections (6) are provided distributed along the lamination section (7). Optical element (1) according to claims 2 and 4, wherein the at least some or all of the plurality of structural sections (6) are all in regions of the, Laminating section (7) are provided which correspond to the same defined functional value. Optical element (1) according to one of the preceding claims, wherein the thickness (D) of the lamination section (7) changes sinusoidally along the extension direction (E). Optical element (1) according to one of the preceding claims, wherein the thickness (D) of the lamination section (7) changes periodically along the extension direction (E) at least between a greater thickness (D1) and a smaller thickness (D2), wherein the structural section (6) or, if several are present, the structural sections (6) are each provided in a region of the lamination section (7) with the greater thickness (D1) or with the smaller thickness (D2). Optical element (1) according to claim 7, wherein the greater thickness (D1) is a maximum thickness of the lamination section (7), and / or wherein the smaller thickness (D2) is a minimum thickness of the lamination section (7).Optical element (1) according to one of the preceding claims, wherein the lamination section (7) extends in a plane on the side of the front side (3), or wherein the lamination section (7) extends in a plane on the side of the rear side (4). Optical element (1) according to one of the preceding claims, wherein the front side (3) and the rear side (4) limit the thickness (D) of the lamination section (7). Optical element (1) according to one of the preceding claims, wherein the light entry section (2) has a lens pot (20). Optical element (1) according to one of the preceding claims, wherein an end face connecting the front side (3) and the rear side (4) and preferably extending circumferentially comprises or forms the light entry section (2), and / or wherein the rear side (4) comprises the light entry section (2). Optical element (1) according to one of the preceding claims, wherein a plurality of the light entry sections (2) are arranged in at least one row (R1, R2) along a longitudinal arrangement axis (A). Optical element (1) according to one of the preceding claims, wherein a plurality of the light entry sections (2) are arranged in a plurality of rows (R1, R2), each along a longitudinal arrangement axis (A), preferably on the rear side (4). Optical element (1) according to claim 14, wherein the longitudinal arrangement axes (A) of the plurality of rows (R1, R2) are parallel to one another and preferably all arranged in one plane.Optical element (1) according to claim 14 or 15, wherein each two adjacent rows (R1, R2) are connected to one another by an integral connecting section (5) of the optical element (1). Optical element (1) according to claim 16, wherein the connecting section (5) has the cladding section (7), or wherein the cladding section (7) forms the connecting section (5). Optical element (1) according to one of claims 13 to 17, wherein the light entry sections (2) per row (R1, R2) are arranged uniformly distributed along the longitudinal axis (A) of the arrangement, preferably at a regular spacing, wherein the regular spacing particularly preferably corresponds to X times the period length of the period of the thickness change, where X is an element of the natural numbers (XGN). - Optical element (1) according to claim 7 in conjunction with claim 18, wherein each of the light entry sections (2) is adjacent to a region of the lamination section (7) with the greater thickness (Di), or wherein each of the light entry sections (2) is adjacent to a region of the lamination section (7) with the smaller thickness (Di). . Optical element (1) according to one of the preceding claims, wherein the lamination section (7) or its extension direction (E) extends along a lamination longitudinal axis (K), wherein preferably the lamination longitudinal axis (K) and the arrangement longitudinal axis(es) (A), if present, are aligned parallel to one another. . Optical element (1) according to one of the preceding claims, wherein the structural section (6) extends away from the rear side (4) at the rear. . Optical element (1) according to one of the preceding claims, wherein the structural section (6) is a solid body or a hollow body. .Optical element (1) according to one of the preceding claims, wherein the structural section (6) has a convex and / or concave outer surface, which preferably directs the coupled-in light in a defined manner. Optical element (1) according to one of the preceding claims, wherein the structural section (6) has at least one or a combination of the following group:. • a mounting section for attaching the optical element (1), • a positioning pin, • a mounting section for attaching lighting components, • an injection point. . Optical element (1) according to one of the preceding claims, wherein the optical element (1) is made integrally from a translucent material, preferably from translucent plastic, particularly preferably in an injection molding process or a continuous casting process, or from glass. Luminaire (10) comprising: an optical element (1) according to one of the preceding claims, a lighting means with at least one light source, wherein the lighting means is arranged relative to the optical element (1) such that light emitted by the light source(s) is coupled into the optical element (1) via the light entry section(s) (2), and the light thus coupled is then emitted via the front side (3). Luminaire (10) according to claim 26, wherein the lighting means is an LED lighting means with at least one LED as the light source. Luminaire (10) according to claim 26 or 27, wherein the lighting means and / or further lighting components, such as reflectors, are positioned and / or fastened by means of the structural sections (6). Luminaire (10) according to one of claims 26 to 28, further comprising a luminaire housing, wherein the optical element (1) is mounted to the luminaire housing via the structural sections (6).

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