• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to an optical element for influencing a light emitted by at least one LED, comprising a main region (1) having a rear light entry surface (2) and a front light exit surface (3), the front light exit surface (3) for dispensing a portion of the light Light (L1) forward (R1) is configured, and a wing-like to the main area (1) affiliated side region (4) to which a further light exit surface (5) for a delivery of a further portion of the light (L2, L3) in a lateral direction (R2) and / or in a rearward direction (R3) is configured, wherein the light entry surface (2) comprises a preferably convex central region (21), and a cladding region (22), wherein the cladding region (22) only partially extends around the central region (21) and / or has different heights at different locations.
    公开号:AT15786U1
    申请号:TGM229/2014U
    申请日:2014-05-28
    公开日:2018-06-15
    发明作者:Machate Andreas
    申请人:Zumtobel Lighting Gmbh；
    IPC主号:
    专利说明:

    description
    OPTICAL ELEMENT FOR ONE LED. LED ARRANGEMENT WITH SUCH AN OPTICAL ELEMENT, AND LUMINAIRE WITH SUCH AN LED ARRANGEMENT The invention relates to an optical element for influencing a light emitted by at least one LED (LED: light-emitting diode). Furthermore, the invention relates to an LED arrangement with such an optical element and a lamp with such an LED arrangement.
    A lens body for an LED is known from the prior art, which is roughly shaped like a truncated pyramid. On a rear side, the lens body has a light entry surface for the entry of the light and on the opposite front side a light exit surface via which the light is emitted again. The light entry surface is formed by a recess with a bottom surface and a lateral surface, the LED being positioned such that it protrudes into this recess. A portion of the light that enters the lens body via the bottom surface of the recess is refracted when entering the bottom surface and when exiting the light exit surface, in between this light is not deflected in any direction. Another part of the light that enters the lens body via the outer surface of the recess is refracted on entry to the outer surface, totally reflected on an outer outer surface of the lens body, and then emitted through the light exit surface with another refraction. In this way, a desired directional distribution of the light emitted by the lens body can be brought about; the light can be directed so that it is emitted to the front in a directed manner, in particular glare-free.
    However, this lens body only allows light to be directed into a forward-facing spatial area. If part of the light is also to be emitted to the side or even backwards, as may be desired, for example, to produce indirect lighting, corresponding further optical elements are required for further light deflection.
    For example, it is known from the prior art to provide separate light sources for this.
    The invention has for its object to provide a corresponding improved optical element. In particular, the optical element should enable light to be emitted in a larger solid angle range overall. In addition, a correspondingly improved LED arrangement and a correspondingly improved lamp are to be specified.
    This object is achieved according to the invention with the objects mentioned in the independent claims. Particular embodiments of the invention are specified in the dependent claims.
    According to the invention, an optical element for influencing a light emitted by at least one LED is provided, which has a main area with a rear light entry surface and a front light exit surface, the front light exit surface being designed to emit part of the light to the front. Furthermore, the optical element has a wing-like side area attached to the main area, on which a further light exit surface is designed for emitting a further part of the light in a lateral direction and / or in a rearward direction.
    Due to the wing-like side area, part of the light can advantageously also be directed to the side and / or into the rear area of the room.
    [0009] For this purpose, the light entry surface preferably comprises a preferably convex central region and a cladding region, the cladding region only partially extending around the central region and / or differently at different points
    AT15 786U1 2018-06-15 Austrian
    Patent office che heights. In this way it is made possible that part of the light emitted by the LED does not enter the main area via the light entry surface, but rather can reach the wing-like side area directly. Accordingly, the optical element is preferably designed such that the further part of the light shines past the cladding area and then reaches the side area.
    Preferably, the side region has a first surface region and a second surface region opposite the latter, these two surface regions being designed to direct the further part of the light. In this way, a particularly suitable light deflection to the side or in the rear room can be achieved.
    The first surface area is preferably part of a preferably linear prism structure formed on the side area. This enables targeted light control in a particularly suitable manner.
    The second surface region preferably forms part of the further light exit surface. In this way, a corresponding light deflection can be achieved in a particularly small space.
    [0013] The second surface area is preferably designed to refract the further part of the light at least partially for emission in the lateral direction and / or at least partially to totally reflect it for emission in the rearward direction. In this way, the second surface area can be used to emit light both to the side and to the rear area.
    Preferably, the main area has a first section on which the rear light entry surface and the front light exit surface are formed, as well as at least one further section, which is designed analogously to the first section. In this way, the optical element is particularly suitable for influencing light that is emitted by several LEDs.
    Preferably, the first section and the at least one further section are arranged extending along a longitudinal axis. In this way, particularly suitable linear light emission can be achieved.
    [0016] The main area and the side area are preferably formed in one piece. Alternatively, these two areas can be made up of two separate components.
    The side region is preferably designed to extend around the main region, preferably closed in a ring. As a result, the optical element is particularly suitable, for example, for use in a damp room luminaire.
    Preferably, the optical element is advantageously manufactured in the form of an injection molded part.
    According to a further aspect of the invention, an LED arrangement is provided which has an optical element according to the invention, and at least one LED which is arranged such that a light emitted by the LED enters the optical element via the rear light entry surface and Part of the light is emitted to the front via the front light exit surface and another part of the light is emitted via the further light exit surface in a lateral direction and / or in a rearward direction.
    According to a still further aspect of the invention, a lamp is provided with an LED arrangement according to the invention, in particular in the form of a ceiling lamp, the lamp being designed such that in an orientation provided for operating the lamp, the part emitted to the front the light is emitted downwards to produce direct lighting and the further part of the light is emitted to produce indirect lighting.
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    Patent Office The invention is explained in more detail below using an exemplary embodiment and with reference to the drawings. Show it:
    Figure 1 2 shows a perspective sketch of an optical element according to the invention, Figure 2 a cross-sectional sketch through the optical element, normal to its longitudinal axis, Figure 3 a principle sketch to illustrate the deflection of light through the optical element, Fig. 4 a normal view of the back of a portion of the optical element, Figure 5 2 shows a longitudinal section through a section of the main region of the optical element, Figure 6 2 shows a perspective sketch of a section of the optical element and an LED, Figure 7 a basic sketch of the beam path of the further part of the light, the beams being refracted at the second surface area, Fig. 8 a corresponding principle sketch of the beam path of the further part of the light, the beams being refracted and totally reflected on the second surface area, Figure 9 1 shows a perspective sketch of a section of the optical element according to a variant with an additional prismatic structure, Fig. 10Figures 11 and 12 a corresponding sketch from a slightly different perspective,perspective sketches of the optical element according to the variant shown in FIGS. 9 and 10, Fig. 13 a perspective sketch of the optical element according to the variant, Fig. 14 a sketch of an alternative embodiment, in which the main area and the side area are designed as composed of two separate components, 15 a sketch of an embodiment in which the side area extends on three sides of the main area, Fig. 16 a sketch of a further variant in which the lens region of the main region has a cross section which is rectangular to a first approximation and
    Figures 17 and 18 sketches for two further alternative embodiments.
    1 shows a perspective sketch of a section of an optical element according to the invention. The optical element is designed to influence a light emitted by at least one LED (not shown in FIG. 1). A corresponding arrangement comprising the optical element and the at least one LED is referred to here as an LED arrangement.
    In the example shown, the optical element is elongated overall, so that it extends along a longitudinal axis L. 2 shows a cross section through the optical element that is normal to the longitudinal axis L.
    Fig. 3 shows a corresponding cross section of a slightly modified version of the
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    AT15 786U1 2018-06-15 Austrian patent office optical element, with exemplary first light rays L1, second light rays L2 and third light rays L3 being drawn in to illustrate a deflection of the light emitted by the at least one LED. Accordingly, a location Z, from which the light beams L1, L2, L3 originate, is provided for the positioning of the LED 6 — outlined here — relative to the optical element.
    The LED 6 is preferably arranged on a circuit board 7. In this description, it is assumed that the LED 6 is oriented with respect to the vertical V in such a way that the LED 6 emits maximum light vertically downwards. As is customary, the circuit board 7 is provided aligned in a horizontal plane. However, another orientation of the LED 6 or the circuit board 7 can generally also be provided. In such a case, the directions etc. must be reinterpreted accordingly.
    [0042] The optical element has a main area 1 and a side area 4 attached to the main area 1 in a wing-like manner.
    The main area 1 has a rear light entry surface 2 and a front light exit surface 3. The front light exit surface 3 is designed to emit part of the light, here symbolically represented by the first light rays L1. It can be provided that the first light beams L1, as stated at the beginning and as far as known from the prior art, are formed in that they are each refracted at the light entry surface 2 and at the light exit surface 3 and in part also on an outer lateral surface 11 of the main area 1 experience an internal total reflection.
    In this description, it is assumed that the optical element is oriented with respect to the vertical V such that the part of the light L1 which is emitted via the light exit surface 3 is emitted into the lower half space, in particular at least essentially symmetrically around the vertical V. For example, the design can be such that the first light rays L1 form an angle with the vertical V that is less than 60 °. If the LED arrangement is used as part of a corresponding LED light that is designed as a ceiling light, glare-free light emission in the lower half-space can be achieved in this way.
    It is preferably provided that the light exit surface 3 is designed to be flat at least in a first approximation; here we assume a horizontal alignment of the light exit surface 3. However, a different orientation can also be provided. In this case, the directions are again to be interpreted accordingly.
    Compared to the LED 6, the optical element is preferably oriented such that the light exit surface 3 is oriented normally to the direction in which the LED 6 emits the most light or parallel to the circuit board 7.
    The first direction R1 indicated in FIG. 2 and correspondingly pointing vertically downward is also referred to here as “forward” or “forward”. The part of the light L1 that is emitted via the front light exit surface 3 is accordingly emitted “to the front”.
    On the side area 4, a further light exit surface 5 is configured, which is designed to emit a further part of the light, here symbolically represented by the second light beams L2 and the third light beams L3. The further part of the light L2, L3 is emitted in a lateral direction R2 and / or a rearward direction R3. In particular, the lateral direction R2 can be directed perpendicular to the first direction R1 and the rear direction R3 can be opposite to the first direction R1.
    The wording “delivery in a lateral direction R2” is intended to denote that the second light beams L2 are oriented such that they enclose an angle with the second direction R2 that is less than 45 °, for example less than 30 °. The same applies to the wording “delivery in a rearward direction R3”.
    For example, the design can be such that the second light beams L2 with
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    Patent office of the first direction R1 include an angle which is between 70 ° and 135 °, preferably between 80 ° and 130 °, for example between 85 ° and 130 °.
    In the example shown, a first portion L2 of the further part of the light is emitted in the lateral direction R2 and a second portion L3 in the rearward direction R3.
    As is apparent in particular from FIGS. 1 and 2, the light entry surface 2 comprises a central region 21 and a cladding region 22 which extends from the central region 21 into the rear half space. In this case, the jacket region 22 only extends — as shown, for example, in FIG. 1 — around the central region 21; alternatively or additionally, the jacket region 22 can have different heights at different points - with reference to the central region 21.
    In the embodiment shown in FIG. 1, for example, the jacket region 22 extends only at two opposite points along the longitudinal axis L, while no corresponding jacket region is formed at the two points transversely thereto. This is also apparent from Fig. 4, which shows a normal view of the back of the optical element. In this, the optical element differs from the lens body according to the prior art specified at the outset, because in the latter the recess is formed by a bottom surface - which corresponds to the central region 21 - and a cladding region which is circumferential around the bottom surface.
    In the example shown, the main area 1 comprises an “actual” lens area 12, which is surrounded on two opposite sides by wall-like surrounding areas - hereinafter referred to as “collimator” 13; the central region 21 of the light entry surface 2 is formed by a rear surface of the lens region 12 and the cladding region 22 by the wall-like surrounding regions. The lens region 12 can, for example, have a convex shape upwards. In the example shown, the central region 21 is accordingly designed to be convex.
    Since those light rays of the LED 6 that enter the lens region 12 (at least for the most part) have not previously had any interaction with the optical element, the lens region 12 represents, so to speak, a “primary” lens ”.
    The collimator 13 serves to influence light rays emitted flat by the LED. The light emitted by the LED 6 in a correspondingly flat manner is “captured” by the collimator 13, where present, and directed more steeply downwards onto the floor or the front light exit surface 3. The “leftover” collimator piece - in comparison to the prior art - is preferably designed in such a way that the incident flat light is distributed as far as possible over the entire floor surface to be illuminated, that is to say the light exit surface 3.
    In contrast to the prior art mentioned at the outset, the collimator 13 therefore does not extend in a closed, ring-shaped form around the lens region 12, and therefore does not form a “collimator ring”, but instead has at least one interruption or “free cut”. If - as in the example shown - two free cuts are provided, the collimator 13 accordingly has two separate sections.
    The interruption formed by the free cut serves to let the further part of the light L2, L3 shine directly onto the wing-like side region 4. More generally formulated, the optical element is designed in such a way that the further part of the light L2, L3 shines past the cladding area 22 and then reaches the side area 4. 3, which shows the corresponding light beams L2, L3 unaffected by the collimator 13.
    In other words, the light beams L2, L3 of the further light, which are emitted by the LED 6 laterally flat in the direction of the side area 4, are not optically influenced by the main area 1, but rather strike the side area 4 directly.
    5, which is a sketch of a partial longitudinal section of the optical
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    Elements along the longitudinal axis L show, the light beams emitted by the LED 6, correspondingly flat in the longitudinal plane running through the longitudinal axis L, hit the collimator 13 and are furthermore, as stated in principle in the prior art specified at the outset, on an outer lateral surface of the collimator 13 internally totally reflected and subsequently emitted via the front light exit surface 3. It can therefore be achieved in particular that - viewed in longitudinal section - the light emitted via the light exit surface 3 is emitted glare-free to the front.
    As can best be seen from FIG. 3, the LED 6 is preferably positioned at a height which is given by the upper limit of the collimator 13 in order to achieve the stated effect. For example, the LED 6 can be positioned such that it does not extend higher than the collimator 13, in other words, no further in the third direction R3 than the collimator 13.
    6 shows in perspective a sketch of a section of the optical element with the LED 6. As can be seen from this sketch, the “free cut” of the collimator 13 forms a cut-out collimator surface 133 or, in short, free cut surface 133, which is preferably in a vertical Level f is formed, which does not run exactly through the center of the LED 6, but affects the light-emitting surface of the LED 6. In this way it can be excluded that light rays emanating from the LED 6 strike the corresponding free cut surface 133 and are further deflected in an undesired direction. The same applies to the other boundary surface of the free cut. At most, light rays from the LED 6 strike the cut-out surface 133, which previously entered the latter via the cladding region 22, that is to say via an inner surface 131 of the collimator 13. These rays hit the cut-out surface 133 very flat from the inside, so that they experience an internal total reflection there and are furthermore totally reflected again on the outside 132 of the collimator 13 before they finally reach the light exit surface 3 pointing forward.
    If, as mentioned above, the collimator 13 is designed at different points at different heights compared to the central region 21, it can be achieved that light beams of the LED 6, which are emitted correspondingly obliquely laterally downwards, as in the prior art mentioned at the outset the case to enter the main area 1 and be totally reflected on the outside of the main area 1 or the collimator 13.
    The side area 4 preferably has a first surface area 41 and a second surface area 42 opposite the latter, these two surface areas 41, 42 being designed to direct the further part of the light L2, L3. The first surface area 41 is preferably part of a prism structure 43 formed on the side area 4. This enables particularly suitable light control to be achieved. As can be seen from FIG. 1, the prism structure 43 is preferably linear, in particular parallel to the longitudinal axis L. For example, the prism structure 43 can have triangular prisms or be formed by them.
    Preferably, the design is such that the further part of the light L2, L3, starting from the LED 6, experiences its first interaction with the optical element on the first surface area 41, that is to say in particular not before hitting the first surface area 41 on the main area 1 hits.
    As can be seen from FIGS. 2 and 3, the second surface area 42 preferably also forms part of the further light exit surface 5. Preferably, the second surface area 42 is designed to at least partially emit the further part of the light L2, L3 into the surface to break the lateral direction R2 and / or to totally reflect at least partially for a delivery in the rearward direction R3. In the example shown, the design is accordingly such that the second light beams L2 are refracted at the second surface area 42 of the side area 4 and the third light beams L3 are totally reflected there.
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    Patent Office This is further illustrated in FIGS. 7 and 8 with the aid of two exemplary principle sketches; corresponding calculations can advantageously serve as a basis for designing the side area 4. In these sketches, the location Z, from which the light rays L1, L2, L3 originate, is shown in a sectional plane normal to the longitudinal axis L, as well as sections of the first surface area 41 and the second surface area 42. A horizontal plane E is also shown . It is assumed that the optical element consists of PMMA (polymethyl methacrylate) and is in the air.
    In both cases, the first surface area 41 is flat and inclined by 1 ° with respect to the vertical V, in the direction R2. In this way it can be achieved that the optical element can advantageously be manufactured as an injection molded part, since it can be suitably removed upwards or in the direction R3 from the corresponding injection molding tool. The first surface area 41 is thus designed as a “draft angle” of 1 °.
    In the case shown in FIG. 7, the second surface area 42 forms an angle cd = 50 ° with the horizontal plane E. Shown in are light rays from the LED which, after emerging from the second surface area 42, run obliquely upwards or, if need be, run horizontally; If the optical element is used in a luminaire, for example a ceiling luminaire in the orientation considered here, these light rays cannot cause undesirable glare in practice. The angular range W in which these light beams are emitted by the LED 6 is approximately 23 °.
    In the case shown in FIG. 7, all light rays at the second surface area 42 are refracted. By way of example, as shown in FIG. 8, by changing the inclination of the second surface area 42 it can be achieved that a part of the flat emitted rays considered here experiences a total reflection on the second surface area 42 and is deflected upwards. In the case shown in FIG. 8, the corresponding angle a2 = 46 °. Of course, the rays L2 outlined in FIG. 8 subsequently emerge again upward from the optical element, specifically over part of the further light exit surface 5, as can be seen, for example, from FIG. 3.
    In the example shown in FIG. 7, the rays for a delivery in the lateral direction R2 are refracted at the second surface area 42. In the example shown in FIG. 8, the rays are refracted at the second surface area 42 for a delivery in the lateral direction R2 and totally reflected at the second surface area 42 for a delivery in the rear direction R3.
    The further part of the light L2, L3 is thus particularly suitable in the case of a corresponding ceiling lamp for generating indirect lighting, for example a ceiling illumination. Of course, the corresponding luminaire housing must be designed so that the light rays can be emitted by the luminaire accordingly. For example, it can be provided that the optical element on the relevant side protrudes beyond the rest of the lamp.
    The part of the light L1 emitted forward or downward is particularly suitable in this case for generating direct illumination. This is also advantageous from an energetic point of view, because in the case of a typical LED, the part of the light L1 emitted via the front light exit surface 3 is significantly more intense than the further part L2, L3, because the latter only comes from a small part of the total emitted by the LED Rays and also this part consists of comparatively flat and therefore comparatively less intense rays. For example, the LED arrangement can be designed such that between 5% and 20% of the light emitted by the LED is used to generate the further part of the light L2, L3.
    The examples shown in FIGS. 7 and 8 are of course not restrictive as such. For example, it can be provided that the light beams L2 also at least partially
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    Patent office have a directional component downwards, for example, to meet special lighting requirements.
    As can be seen from FIG. 2, it can be provided that the main area 1 is connected to the side area 4 in particular only at its lower end; For example, the design can be such that the front light exit surface 3 extends directly to the side region 4, for example — via an edge 35 — merges into the further light exit surface 5. In the example shown here, the lens region 12 is completely separated from the side region 4; the same applies to the collimator 13.
    As can be seen, for example, from FIG. 2, the side region 4 in the example shown here extends to two opposite sides of the main region 1. The side region 4 is preferably designed analogously on both sides. For example, it can be provided that viewed in a normal section with respect to the longitudinal axis L, the optical element is designed mirror-symmetrically about a vertical which runs through the light entry surface 2 and the light exit surface 3 of the main region 1. Accordingly, a correspondingly analog light emission can be effected in a further lateral direction R4, which is opposite to the first-mentioned lateral direction R2.
    As sketched in FIGS. 1 and 2, in the example shown the main area 1 has a flat, preferably parallel to the light exit surface 3, bottom surface 15, from which the lens region 12 and the collimator 13 extend upwards. This bottom surface 15 extends to the side directly up to the side region 4. The latter extends there starting from the bottom surface 15 obliquely upwards. As a result, in the orientation of the arrangement considered here, the front light exit surface 3 is directed downward and the further light exit surface 5 is at least partially obliquely downward, so that in this respect an accumulation of dust is at least largely prevented on these surfaces.
    The bottom surface 15 is designed as a whole flat in the embodiment shown in Figures 1 and 2. The bottom surface 15 can be rough, for example. In this way it can be achieved that an opal scattering area is integrated in the optical element. In this case, the light emitted by the optical element has a scattered light component. A rough design of the bottom surface 15 can be achieved, for example, by the optical element being formed as an injection molded part, the corresponding surface in the injection molding tool being sandblasted.
    In Figures 9 to 12 sketches are shown for a variant, according to which the bottom region 15 is provided with an additional prismatic structure 16 for further light control. This additional prismatic structure 16 can be designed, for example, Fresnel-like. By appropriately designing the additional prismatic structure 16, a corresponding proportion of light can be expanded or bundled.
    In the embodiments described so far, the lens region 12 of the main region 1 is circular when viewed in a horizontal cross section. A further variant is sketched in FIG. 16, in which the lens region 12 of the main region 1 has a horizontal cross section, in particular a square one, in a first approximation. A corresponding LED arrangement therefore generates a correspondingly shaped, so to speak a square, radiation characteristic or light distribution. This configuration of the lens area 12 makes it possible to achieve that the base area 15 is comparatively smaller; In this case, the lens area 12 can also extend practically all the way to the side area 4, so that there is practically no corresponding base area 15 or the base area 15 is so small that it has practically no noticeable influence with respect to the light output. In this case it is possible to steer all light beams in a defined manner - without a corresponding additional prismatic structure 16.
    As can be seen, for example, from FIG. 1, in the example shown the main area 1 has a first section cd on which the rear light entry surface 2 and the front light exit surface 3 are formed, and at least one further section a2,
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    Patent office α3, which is designed analogously to the first section cd. The first section cd and the at least one further section α2, a3 are preferably arranged extending along the longitudinal axis L. In particular, it can be provided that each section cd, α2, a3 is provided to influence a light emitted by an LED or an LED cluster. In this way, a linear light emission structure can be produced in a particularly suitable manner.
    The main area 1 and the side area 4 can - as sketched in Fig. 13 - be formed in one piece; alternatively it can be provided that the optical element is designed in two parts - as sketched in FIG. 14 in the manner of an exploded view. It can in particular be provided that an upper portion of the main area 1 is designed as one of the two components and the side area 4 together with a lower portion of the main area 1 as the corresponding second component. In Fig. 14 a circuit board is additionally sketched on which the corresponding LEDs are arranged.
    In the two examples outlined in FIGS. 13 and 14, the side region 4 extends with respect to the longitudinal axis L on two opposite sides of the main region 1. In contrast, in the example shown in FIG. 15 in the manner of an exploded view, the two are Elongated sections of the side area 4, which extend parallel to the longitudinal axis L, connected to one another at an end face by an arcuate section, so that the side area 4 extends around the main area 1 on three sides. In general, the design can also be such that the side area 4 is also designed analogously at the corresponding opposite end, so that it is designed to extend around the main area 1, preferably closed in a ring. Such a design is particularly suitable, for example, if the optical element is to be used in a damp room luminaire. An integrated sealing device and bracing elements for connection to a corresponding luminaire housing can also advantageously be provided here.
    Appropriate design of the side area 4 thus makes it possible, in particular, to achieve one-sided, two-sided, three-sided or four-sided indirect lighting.
    Further alternative embodiments are outlined in FIGS. 17 and 18. 17 shows a cross section normal to the longitudinal axis L. Here two rows r1, r2 of LEDs are arranged in parallel next to each other, corresponding sections of the main area 1 being assigned to each LED row r1, r2. In this case, the collimators 13 preferably only have a free cut on the side facing outward, that is to say in particular no free cut on the inside.
    As outlined here, the side area 4 can be designed such that it only has one prism area, that is to say no step formation, as shown above. This makes it possible to produce a particularly homogeneous light distribution to the side, in which streaking in particular can be avoided. This version is particularly suitable for a flat design of the optical element and, for example, for mid-power or low-power LEDs.
    According to the development outlined in FIG. 18, a middle LED row rm is also provided between two appropriately designed LED rows r1, r2, the collimators of which are designed in a customary manner, that is to say they are designed to surround the corresponding lens areas on all sides. Of course, more rows can also be formed. In this way, sections arranged in a flat or matrix-like manner are formed.
    In this embodiment, the primary optics are designed to be offset backwards or “inwards”. This embodiment is also suitable, for example, for mid-power or low-power LEDs.
    With an LED arrangement according to the invention or with a luminaire according to the invention it can be achieved that the light emitted by only one light source can be used both for generating direct lighting and for generating indirect lighting.
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    Patent Office [0090] A luminaire with a corresponding LED arrangement is particularly suitable, for example, as a surface-mounted luminaire, because in this case the ceiling can be brightened with the second light beams L2. For example, the
    The luminaire is a strip of light that is intended to be mounted directly on the ceiling. Such a luminaire is also particularly suitable as a damp room luminaire.
    The luminaire is also suitable as a recessed luminaire, namely if the luminaire protrudes somewhat downwards from the surrounding ceiling surface, more precisely if the geometric conditions are such that the light beams L2 emitted to the side can produce a ceiling brightening.
    Basically, the luminaire is also suitable as a pendant luminaire, although here, in principle, uniform lightening of the ceiling directly above the luminaire is not easy to achieve.
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    Patent office
    权利要求:
    Claims (19)
    [1]
    Expectations
    1. Optical element for influencing one emitted by at least one LED
    Showing light
    a main area (1) with a rear light entry surface (2) and a front light exit surface (3), the front light exit surface (3) being designed to emit part of the light (L1) to the front (R1),
    - A wing-like to the main area (1) side area (4), on which a further light exit surface (5) for emitting a further part of the light (L2, L3) in a lateral direction (R2) and / or in a rearward direction (R3) is configured, characterized in that the light entry surface (2) comprises a preferably convex central region (21) and a cladding region (22), the cladding region (22) only partially extending around the central region (21) and / or has different heights at different points.
    [2]
    2. Optical element according to claim 1, which is designed such that the further part of the light (L2, L3) shines past next to the cladding region (22) and then reaches the side region (4).
    [3]
    3. Optical element according to claim 1 or 2, wherein the side region (4) has a first surface region (41) and a second surface region (42) opposite the latter, these two surface regions (41, 42) for guiding the further part of the Light (L2, L3) are designed.
    [4]
    4. Optical element according to claim 3, wherein the first surface area (41) is part of a, on the side area (4) formed, preferably linear prism structure (43).
    [5]
    5. Optical element according to claim 3 or 4, wherein the second surface region (42) forms part of the further light exit surface (5).
    [6]
    6. Optical element according to one of claims 3 to 5, in which the second surface region (42) is designed to at least partially refract the further part of the light (L2, L3) for emission in the lateral direction (R2) and / or totally reflect at least partially for a delivery in the rearward direction (R3).
    [7]
    7. Optical element according to one of the preceding claims, wherein the main region (1) has a first section (cd), on which the rear light entry surface (2) and the front light exit surface (3) are formed, and at least one further section (α2 , a3), which is designed analogously to the first section (cd).
    [8]
    8. Optical element according to claim 7, wherein the first section (cd) and the at least one further section (α2, a3) are arranged extending along a longitudinal axis (L).
    [9]
    9. Optical element according to one of the preceding claims, in which the main region (1) and the side region (4) are formed in one piece or are made up of two separate components.
    [10]
    10. Optical element according to one of the preceding claims, in which the side region (4) is designed to extend around the main region (1), preferably closed in a ring.
    [11]
    11. Optical element according to one of the preceding claims, in the form of an injection molded part.
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    [12]
    12. LED arrangement, having
    - An optical element according to one of the preceding claims and
    - At least one LED which is arranged such that a light emitted by the LED enters the optical element via the rear light entry surface (2) and emits part of the light (L1) to the front (R1) via the front light exit surface (3) and a further part of the light (L2, L3) is emitted via the further light exit surface (5) in a lateral direction (R2) and / or in a rearward direction (R3).
    [13]
    13. Luminaire, in particular in the form of a ceiling lamp, comprising - an LED arrangement according to claim 12, wherein the luminaire is designed in such a way that the part of the light (L1 ) is emitted downwards to generate direct lighting and the further part of the light (L2, L3) is emitted to produce indirect lighting.
    With 14 sheets of drawings
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    同族专利:
    公开号 | 公开日
    DE202014101954U1|2015-07-28|
    EP3134675B1|2018-04-04|
    WO2015162196A1|2015-10-29|
    EP3134675A1|2017-03-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2841966A1|2002-07-04|2004-01-09|Koito Mfg Co Ltd|VEHICLE LAMP WITH LOW DEPTH REFLECTOR|
    US20050190564A1|2004-02-26|2005-09-01|Koito Manufacturing Co., Ltd.|Vehicular lamp|
    WO2010119580A1|2009-04-16|2010-10-21|株式会社光波|Light source module|
    US20120063141A1|2010-08-12|2012-03-15|Sanken Electric Co., Ltd.|Lighting device|
    JP2013012440A|2011-06-30|2013-01-17|Konica Minolta Advanced Layers Inc|Optical element for lighting device, and lighting device|
    GB531185A|1939-06-29|1940-12-31|George William Rawlings|Improvements in electric lamps|
    DE10329185A1|2003-06-27|2005-01-20|Guido Kellermann Produktentwicklung & Handel|Light for a vehicle|
    US7554742B2|2007-04-17|2009-06-30|Visteon Global Technologies, Inc.|Lens assembly|
    DE102009023916B4|2009-06-04|2017-06-08|Hella Kgaa Hueck & Co.|Lamp for vehicles|
    DE102012102732B4|2012-03-29|2015-12-31|Siteco Beleuchtungstechnik Gmbh|Luminaire with light emission in a border area|DE102016104223A1|2016-01-26|2017-07-27|Siteco Beleuchtungstechnik Gmbh|Luminaire with indirect lighting|
    DE102017125245A1|2017-10-27|2019-05-02|Siteco Beleuchtungstechnik Gmbh|Cover for a light module, light module and light|
    DE102017125236A1|2017-10-27|2019-05-02|Siteco Beleuchtungstechnik Gmbh|Cover for a light module and light module|
    NL2023024B1|2019-04-29|2020-11-05|Veko Lightsystems Int B V|Thin-walled optical element lens for a light source provided with prismatic structures on both sides.|
    DE102019111542B4|2019-05-03|2022-03-10|Hib Trim Part Solutions Gmbh|Uniformly illuminated decorative part|
    法律状态:
    2021-01-15| MM01| Lapse because of not paying annual fees|Effective date: 20200531 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE202014101954.5U|DE202014101954U1|2014-04-25|2014-04-25|Optical element for an LED, LED arrangement with such an optical element, as well as luminaire with such an LED arrangement|
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