EP4034805A1 - Optisches element - Google Patents
Optisches elementInfo
- Publication number
- EP4034805A1 EP4034805A1 EP20775258.5A EP20775258A EP4034805A1 EP 4034805 A1 EP4034805 A1 EP 4034805A1 EP 20775258 A EP20775258 A EP 20775258A EP 4034805 A1 EP4034805 A1 EP 4034805A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- optical element
- zone
- zones
- structures
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 172
- 230000008878 coupling Effects 0.000 claims description 21
- 238000010168 coupling process Methods 0.000 claims description 21
- 238000005859 coupling reaction Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims 7
- 230000000694 effects Effects 0.000 description 17
- 230000004313 glare Effects 0.000 description 12
- 230000008901 benefit Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000001795 light effect Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 208000003351 Melanosis Diseases 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
- F21V3/049—Patterns or structured surfaces for diffusing light, e.g. frosted surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0231—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0294—Diffusing elements; Afocal elements characterized by the use adapted to provide an additional optical effect, e.g. anti-reflection or filter
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0051—Diffusing sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
- F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
- F21V3/062—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
- F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
- F21V3/062—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics
- F21V3/0625—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics the material diffusing light, e.g. translucent plastics
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
- G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
Definitions
- the present invention relates to an optical element and a flat lamp having such an optical element. background
- Flat lights are usually used for large-area lighting.
- luminaires are used to illuminate rooms such as offices.
- lights can also be used for
- Illumination of workplaces provided in rooms should be provided.
- the light output by the luminaire should take place in such a way that the light is “glare-free” or “glare-free”, in order not to dazzle people on the one hand and to avoid disturbing reflections on vertical surfaces on the other.
- “Glare-free” or “glare-free” means that the so-called luminance drops below a predetermined limit value above a certain limit angle with respect to the vertical or surface normal of the flat lamp. A light emission at an angle that is too flat would, however, result in particular in the glare of people who are looking at the luminaire at an angle from below.
- the lamp can be arranged in a particularly compact manner; the luminaire appears flat or essentially two-dimensional to a viewer.
- Appearance of the luminaire or of the mounting area provided for the luminaire, such as a ceiling it may be desirable for the luminaire to appear three-dimensional.
- a three-dimensional appearance of the luminaire can be generated, for example, by designing the luminaire three-dimensionally, that is to say not an essentially flat one
- the present invention thus sets itself the task of overcoming the disadvantages mentioned above. That is, it is particularly an object of the present invention to provide a three-dimensional effect of a luminaire while the luminaire is compact and glare-free
- the invention relates to an optical element for a flat lamp.
- the optical element has a flat
- Light coupling-in side for introducing light into the optical element and a flat light coupling-out side opposite the flat light coupling-in side for emitting the light introduced via the light coupling-in side.
- the light outcoupling side has: a first zone for diffusely scattering light emission of a first part of the via the
- a “partially defined directed light emission” is understood to mean that the or at least the corresponding part of the light emitted via the second zones is, in particular, not diffusely scattered.
- the light beams emitted from the second zones accordingly have defined and preferably different and / or the same directions.
- the light passing through the optical element at least in the mentioned part of the second zones should therefore not be refracted or refracted in a defined manner. For example, in a case in which the light coupling-in side and the light coupling-out side of the said part of the second zone are aligned parallel to one another, light beams that strike perpendicularly do not Broken.
- a defined refraction of light is preferably effected; which differs from a mostly undefined light scattering.
- the diffusely scattering light output via the first zone provides in particular the (defined) anti-glare effect of the optical element.
- the light output via the second zones which is essentially directed in a defined manner (i.e. in particular not or defined refracted; therefore not deflected or deflected in a defined manner) and thus in particular not diffusely scattering, causes light output via these second zones that is less glare-free or not at all glare-free is compared to the light output over the first zone. That is, in particular for viewing angles for which the first zone has lower luminance levels in order to prevent glare, the second zones each have higher luminance levels in order to produce a desired glare or (defined) brilliance.
- the optical element Due to the first zone and the diffusely scattering light output, the optical element retains its glare-free effect - for use in offices, for example - while the brilliance brought about by the second zones makes the optical element and thus, for example, a flat luminaire provided with the optical element appear three-dimensional leaves.
- the flat optical element or the flat lamp appears three-dimensional with this optical element, without the optical element or the
- Luminaire (additionally) has to be designed three-dimensionally.
- Each of the second zones can be delimited from the first zone by a defined shape.
- a defined brilliance can be generated, which makes the optical element appear three-dimensional in a particularly advantageous manner.
- Each of the second zones can be delimited from the first zone by a circular, elliptical and / or polygonal (for example hexagonal), in particular essentially hexagonal shape.
- the second zones are not limited to any particular shape.
- the second zones can have different shapes; alternatively, it is also conceivable that the second zones have identical shapes.
- Each of the second zones can have a size such as, for example, an area delimited by the respective shape.
- the second zones with different sizes are provided in the first zone.
- a three-dimensional effect of the optical element can thus be generated in a particularly advantageous manner.
- second zones with smaller sizes are preferably arranged in the first zone.
- an especially macroscopic three-dimensional effect of the optical element can be generated particularly well, since the second zones, which become smaller with increasing distance, create an impression of depth and thus make the essentially two-dimensional light coupling-out side appear in the form of a three-dimensional shape such as a sphere.
- the size is preferably a circumference, this circumference particularly preferably being in a range from 5 mm to 35 mm, for example in a range from 10 mm to 30 mm.
- second zones which are particularly close to said inner area and particularly preferably directly opposite this inner area, i.e. the innermost second zones, have a circumference of essentially 30 mm, whereas the second zones furthest away from the inner area or the outermost second zones, that is to say in particular the second zones directly opposite the outer boundary of the first zone, have a circumference of essentially 10 mm.
- the size can also be a scope, the aforementioned values or value ranges then preferably also applying to the scope.
- the distance between adjacent second zones can become larger with increasing distance from one or the inner region. This is particularly important to that generated by the optical element benefit from the three-dimensional effect.
- the increasing distance between adjacent second zones can be due, for example, to the fact that the second zones become smaller with increasing distance.
- the inner region of the optical element can be a center of the optical element.
- the center is central with respect to the width and / or height of the optical element; the width and height are each seen in plan view, that is, in the direction of the surface normal of the surface light coupling-out side, so that the depth of the thickness of the optical
- the second zones can be arranged preferably evenly distributed over at least a part and preferably over the entire area of the first zone. This brings about a particularly advantageous (macroscopic) three-dimensional appearance of the optical element.
- the second zones can each have at least one light outcoupling structure.
- the at least one light coupling-out structure can be designed in such a way that the second zones are suitable for influencing the second part of the light introduced via the light coupling-in side in a non-diffusely scattering manner and thus emitting it directly in a defined manner. It can thus be effected in a particularly simple manner that the second zones emit the second part of the light introduced via the light coupling side in a defined direction or, in particular, do not scatter it diffusely.
- the at least one light outcoupling structure is designed for emitting light in a defined direction such that the second zones are suitable for defining the second part of the light introduced via the light inward coupling side
- the defined directions of the light emission with the second zones and their light outcoupling structures can produce a particularly advantageous luminance distribution and thus (dynamic) brilliance, so that a particularly advantageous three-dimensional appearance of the optical element can be produced.
- the second zones can each have a plurality of light outcoupling structures.
- the multiple light outcoupling structures can be designed differently or identically.
- the plurality of light outcoupling structures are preferably distributed (arranged) uniformly over the respective second zone, for example corresponding to the shape of the respective second zone.
- the light outcoupling structures for example at least the outermost light outcoupling structures in each case, can span a shape which corresponds to the shape of the respective second zone.
- the at least one light outcoupling structure can be clearly embodied.
- the (glass) clear design makes it particularly easy to ensure that the light emitted via the second zones is not diffusely scattered in order to thus provide the three-dimensional appearance of the optical element.
- the at least one light outcoupling structure can be circular and / or point-shaped.
- each provided circular and / or punctiform, in the respective second zone the respective second zone is then preferably formed in a circular and / or punctiform spotted manner.
- the circular and / or point-like design of the at least one light coupling-out structure results in a particularly advantageous three-dimensional appearance of the optical element.
- the at least one light outcoupling structure can be a clear region corresponding to the shape of the respective second zone and preferably encircling it in a closed manner, this region preferably surrounding the respective second zone. In other words, at least one can
- Light outcoupling structure have a ring shape corresponding to the respective second zone. This shape of the at least one light outcoupling structure makes it possible to provide a particularly advantageous three-dimensional appearance of the optical element.
- the at least one light outcoupling structure can be clear and essentially completely cover the respective second zone.
- the respective second zone can consist of the (single) clear light outcoupling structure. Accordingly, the at least one light outcoupling structure can be provided particularly easily with respect to the respective second zone, while the light outcoupling structures, provided by the plurality of second zones, produce a particularly advantageous three-dimensional appearance of the optical element.
- the at least one light outcoupling structure can have a plurality of preferably adjoining triangular light outcoupling structures, viewed in the direction of the surface normal of the flat light outcoupling side of the optical element.
- the triangular configuration of the light decoupling structure is particularly preferred for the emission of light in the defined directions; the three-dimensional appearance of the optical element can thereby be produced particularly well.
- the surface normals of the triangular light outcoupling structures can be differently aligned with respect to the flat light outcoupling side and in particular differently in accordance with at least six different directions, so that the different alignments of the triangular light outcoupling structures
- Light outcoupling structures Light can be emitted from the light outcoupling structures in the different, defined directions. Due to the different orientations of the triangular light outcoupling structures, the defined directions of the light output can be set particularly easily. In addition, the result is a particularly advantageous appearance of the second zones, since the second zones appear different to a viewer due to the different directions of the light emission depending on the viewing angle; that is, the appearance of the light coupling-out side changes depending on the viewing angle.
- the triangular light outcoupling structures that are viewed in the direction of the surface normal of the surface light output side of the optical element and are differently oriented between two surface normal included angles is, for example, 60 °, 120 °, 180 °, 240 ° or 300 °. This angle corresponds, for example, to different viewing directions with respect to the optical element. A particularly advantageous viewing angle-dependent brilliance of the optical element is thus generated, which gives the optical element a particularly advantageous three-dimensional appearance.
- the sawtooth-like light outcoupling structures can each have a base surface and a lateral surface with a side surface, that is to say, in particular, be designed in the manner of a pyramid.
- the side surfaces of the sawtooth-like light outcoupling structures are the triangular light outcoupling structures. In this way, the normals to the surface of the triangular light outcoupling structures can be provided in a particularly simple manner.
- the plurality of triangular light outcoupling structures can essentially completely cover the respective second zone. This results in a particularly good three-dimensional appearance of the optical element.
- Each of the light outcoupling structures can have a width or a diameter in the range from 0.1 mm to 2 mm, preferably in the range from
- each of the light outcoupling structures can have a circumference in the range from 1 mm to 5 mm. These values are particularly preferred in order to provide an optical element that provides an anti-glare effect but at the same time appears three-dimensional.
- each of the light outcoupling structures can also have a circumference, in which case the aforementioned values or value ranges of the circumference preferably apply to the circumference of the respective light outcoupling structure.
- a distance between adjacent light outcoupling structures of the respective second zone can be in a range from 0.5 mm to 2 mm.
- the light outcoupling structures of the respective second zone can therefore be provided relatively close to one another in order to bring about the advantageous appearance of the optical element brought about by these light outcoupling structures.
- a distance can be provided between the light outcoupling structure and a delimitation or shape which delimits the respective second zone from the first zone.
- the desired three-dimensional light effect for the advantageous appearance of the optical element can thus be generated particularly well.
- This distance is preferably at least 3 mm.
- Each of the second zones can at least partially have a Fresnel structure and / or a microstructure film in areas in which no light coupling-out structure is provided. In other words, these areas can be provided for diffuse light emission, so that the second zones emit light that is partly diffusely scattered and partly not diffusely scattered.
- the optical element can have an edge delimiting the optical element and the light coupling-out side, preferably closed all round, the edge also delimiting the first zone, preferably closed all round.
- the front side of the optical element is the flat light coupling-out side, with the The front side or light outcoupling side consists of the first zone and the second zones and, if present, of the third zone or the inner area described below. This has the particularly advantageous effect that the optical element produces an anti-glare effect and at the same time appears three-dimensional, in particular due to the second zones.
- the first zone can preferably have microscopic Fresnel structures for diffusely scattering light emission by means of the first zone. A particularly good anti-glare effect can thereby be provided.
- the microscopic Fresnel structures are so small that they can hardly be seen by the human eye.
- the first zone is formed by a microstructure film for diffusely scattering light emission by means of the first zone.
- the first zone can also have a third zone for dispensing the from a
- the secondary means can be, for example, an emergency light.
- the secondary illuminant or the emergency light is preferably provided in such a way that this or these emit light when the illuminant for the light emission via the first and second zone (primary illuminant) does not emit or can emit any light, for example because an electrical supply to the Primary illuminant is not available.
- the unavailable electrical supply can be recognized by a control device which then controls the secondary illuminant for emitting light in a corresponding manner.
- the third zone is preferably clear. Good visibility of the light emitted by the secondary illuminant can thus be ensured for an observer.
- the third zone is preferably a recess for receiving the
- the third zone and the secondary illuminant can thus be provided in a simple manner relative to one another, for example in that the recess positions and / or aligns the secondary illuminant in a defined manner in the third zone.
- the third zone can be provided in one or the (above-mentioned) inner region of the optical element. This ensures particularly good visibility of the light emitted by the secondary illuminant, in particular such that the aforementioned glare reduction of the
- the optical element is preferably made from a thin-walled material such as a film, for example. This results in a particularly compact and easy to manufacture structure of the optical element.
- such an optical element has only one thickness, namely the material thickness of the thin-walled material or the film.
- the invention relates to a flat lamp.
- the flat lamp has a flat light guide with a flat light coupling-out side for emitting light introduced into the light guide.
- the luminaire also has an optical element as described above, the flat light coupling-in side of the optical element in preferably flat contact with the flat light coupling-out side of the
- Light guide is so that light emitted by the light guide via the light coupling-out side can be introduced into the optical element via the flat light coupling-in side of the optical element.
- the optical element has the effect, in particular, that the luminaire, which is actually essentially two-dimensional, has a three-dimensional appearance, namely essentially only through the light effect caused by the first zone and the multiple second zones of the optical element.
- the optical element preferably covers the flat light coupling-out side of the light guide over the entire surface. Description of preferred embodiments
- FIG. 1 shows a plan view of an exemplary embodiment of an optical element according to the invention
- FIG. 2 shows a plan view of a second zone of the optical element shown in FIG. 1 according to a first embodiment
- FIG. 3 shows a plan view of a second zone of the optical element shown in FIG. 1 according to a second embodiment
- FIG. 4 shows a plan view of a second zone of the optical element shown in FIG. 1 according to a third embodiment
- FIG. 5 shows a plan view of a second zone of the optical element shown in FIG. 1 in accordance with a fourth embodiment
- FIG. 6 shows a detailed view (top view) showing a section of the
- Figure 7 is a perspective view of a sawtooth-like
- FIG. 1 shows an exemplary embodiment of an optical device according to the invention
- the optical element 1 has a flat light coupling side for introducing light into the optical element 1.
- the optical element 1 also has a planar light coupling-out side 2 opposite the planar light coupling-in side for emitting the light introduced via the light coupling-in side. Since FIG. 1 is a top view of the optical element 1 - that is, a view in the direction of the surface normal of the planar light coupling-out side 2 - is the planar light coupling-in side not visible.
- the optical element 1 has a front side that can be seen in FIG. 1 and a rear side facing away from the front side and thus not visible in FIG. 1, the front side of the optical element 1 having the light output side 2 and preferably consisting of this; the rear side of the optical element 1 preferably has the light coupling side and particularly preferably consists of this.
- the optical element 1 is not restricted to a specific shape, at least as seen in plan view. That is to say, an edge delimiting the optical element 1 and preferably the flat light coupling-out side 2 (closed all round) is not restricted to a specific shape. As can be seen in FIG. 1, this edge can, for example, have a rectangular shape. However, it is also conceivable that the edge delimiting the optical element 1 has a square, circular, elliptical and / or polygonal shape. In general, the optical element 1 or its edge can have a shape which corresponds to the respective flat lamp with which the optical element 1 is used.
- the light introduced into the optical element 1 via the planar light coupling-in side is preferably the light emitted by a light source such as, for example, an LED.
- the light emitted by the illuminant can reach the optical element 1 directly via the light coupling side or also indirectly, for example by means of reflection; this indirect light introduction or reflection can take place, for example, through a flat luminaire as described below or through a light guide of such a luminaire.
- the optical element 1 is therefore preferably provided for a flat lamp.
- the light coupling-out side 2 has a first one
- Zone 3 for the diffusely scattering light emission of a first part of the light introduced via the light coupling side. It is preferred if the light coupling-out side 2 has a single first zone 3.
- the light emitted via the first zone 3 is preferably used for preferably large-area illumination, for example of a workplace or a
- the first zone 3 is designed to diffusely scatter the first part of the light introduced via the light coupling-in side and thus essentially to glare free. This means that above a certain critical angle with respect to the vertical of the optical element 1 - that is, with respect to the surface normals of the flat light outcoupling side 2 or with respect to the surface normals of the plane of the drawing in FIG. 1 - the so-called luminance falls below a predetermined limit value, so that above this specific limit angle in particular glare is prevented or at least reduced.
- the UGR value brought about by the optical element 1 is improved by the first zone 3, that is, the UGR value is in particular less than 22, preferably less than 20.
- the UGR value evaluates the glare from a light , whereby the smaller the UGR value, the lower the
- the first zone 3 emits the first part of the light introduced via the light coupling side in a diffusely scattering manner
- the first zone 3 has diffusely scattering structures.
- These diffusely scattering structures can have scattering particles and / or other regular or irregular structures, for example.
- the first zone 3 can have microscopic Fresnel structures for diffusely scattering light emission by means of the first zone 3.
- the first zone 3 can in particular be formed by a microstructure film for diffusely scattering light emission by means of the first zone 3.
- a particularly preferred film for diffusely scattering or glare-free emission of light by means of the first zone 3 is known under the trade name G-GH85 from the company bright view technologies.
- the first zone 3 is not restricted to a specific (outer) shape or contour.
- the edge delimiting the optical element 1 and the light coupling-out side 2 preferably closed all round, also delimited the first zone 3, preferably closed all round.
- the (outer) delimitation of the first zone 3 corresponds to the (outer) delimitation of the optical element 1 or the Light outcoupling side 2 formed, so for example rectangular or also square, circular, elliptical and / or polygonal.
- the light coupling-out side 3 also has a plurality of second zones 4 provided in the first zone 3. For the sake of clarity, the reference symbol is given in FIG. 1 for only one of the second zones 4.
- the second zones 4 are provided to emit the light of a second part of the light introduced via the light coupling side.
- the light introduced into the optical element 1 via the light coupling side preferably consists of only two parts, the first part of this introduced light - as described above - being emitted via the first zone 3, and the second part of this introduced light being emitted via the second zones 4 are emitted from the optical element 1.
- the first part of the light introduced into the optical element 1 preferably forms the largest proportion of the light output by the optical element 1.
- the second zones 4 emit the second part of the light introduced via the light coupling side in such a way that the light emitted via the second zones 4 is at least partially directed in a defined manner; consequently therefore preferably in particular not broken or broken in a defined manner or deflected or deflected in a defined manner and thus in particular not diffusely scattered.
- a lower glare control effect of the light is generated, so that an advantageous three-dimensional appearance of the optical element 1 is generated, although the light decoupling side 2 of the optical element 1 is essentially two-dimensional or flat.
- the optical element 1 is basically intended for diffusely scattering light emission. A sufficiently glare-free light emission is thus guaranteed.
- the remaining or lower proportion of the light output via the light coupling-out side 2 of the optical element 1 then preferably takes place at least via the second zones 4. This part of the light output via the second zones 4 is then deliberately not or less glare-free, which results in deliberate glare or glare. Brilliance is generated.
- the optical element 1 or the light coupling-out side 2 then appears three-dimensional due to the emission of light via the second zones 4 or the brilliance thus generated.
- the second zones 4 are in each case not restricted to a specific shape.
- each of the second zones 4 is delimited from the first zone 3 by a defined shape.
- each of the second zones 4 can be delimited from the first zone 3 by an essentially hexagonal shape.
- the corners of this hexagonal shape are preferably rounded, but can alternatively also be angular.
- each of the second zones 4 can also be delimited from the first zone 3 by a circular, elliptical and / or (other) polygonal shape.
- the second zones 4 have different shapes, for example a first
- Number of second zones 4 have a hexagonal shape and a second number of second zones 4 have a shape different from the hexagonal shape (in particular circular, elliptical, rectangular, square).
- Each of the second zones 4 has a size. This size can be, for example, an area bounded by the respective shape, that is to say an area, and / or a circumference and / or a circumference.
- FIG. 1 shows, it is preferred if the second zones 4 with different sizes are provided in the first zone 3.
- the different sizes alone - that is, in FIG. 1 with different
- Areas (contents) or perimeters or circles - the impression of a three-dimensional shape can be generated, which in FIG. 1 has, for example, the shape of a hemisphere, which is preferably provided centrally with respect to the width and / or height of the optical element 1 or light output side 2 is.
- second zones 4 of smaller sizes are arranged in the first zone 3; as the distance from the inner region 5 increases, the size of the second zones 4 therefore preferably decreases.
- the circumference or circumference of the second zones 4 in particular takes along increasing distance from the interior 5.
- the second zones 4 directly adjacent to the inner area 5 or the second zones 4 directly opposite the inner area 5 have the largest sizes or circumferences, the second zones 4 being at the greatest distance from the
- Inner area 5 or the second zones 4 directly opposite the delimitation of the first zone 3, that is to say the outermost second zones 4, have the smallest sizes or circumferences. It can thus be provided that the circumference of the second zones 4 lies in a range from 10 mm to 30 mm; the second zones 4 directly adjacent to the inner region 5 then preferably have a circumference of essentially 30 mm, the said outermost second zones 4 preferably having a circumference of essentially 10 mm.
- the size of the second zones 4 preferably decreases linearly with increasing distance from the inner region 5.
- the distance between adjacent second zones 4 increases as the distance from the inner region 5 increases.
- the distance between adjacent second zones 4 increases, for example, in that - as described above - the size of the second zones 4 decreases with increasing distance.
- the distance between the second zones 4 directly adjacent to the inner region 5 is a minimum distance below adjacent second zones 4, whereas the adjacent outermost zones 4 have the greatest distance below adjacent second zones.
- the inner region 5 is preferably provided centrally with respect to the width and / or the height of the optical element 1. It can thus be provided that the inner region 5 is a center of the optical element 1 or the light coupling-out side 2.
- the inner region 5 is not restricted to a specific shape. As shown by way of example in FIG. 1, the
- Inner area 5 have a rectangular shape, for example.
- the inner region 5 can, however, also have other shapes, for example a square, circular, elliptical and / or (other) polygonal shape.
- the inner region 5 can also be provided independently of the second zones 4 of different sizes.
- the second zones 4 are not limited to a specific number.
- the number of second zones 4 is preferably such that the zones 4 form a raster shape, the raster shape - that is, the large number of relatively fine second zones 4 compared to the first zone 3 - essentially the three-dimensional appearance or the depth effects of the optical element 1 generate.
- the second zones 4 can be arranged preferably evenly distributed over at least a part and preferably over the entire area of the first zone 4. For example, the plurality of second zones 4 are over more than half the width and / or height of the optical
- the number of second zones 4 is at least 25 or at least 50 or at least 75 or at least 100.
- the number of second zones 4 is preferably not more than 300, for example not more than 250 or 200 or 175 or 150 second zones 4.
- the first zone 3 can have a third zone 6, which is preferably provided in the inner region 5 of the optical element 1.
- This third zone 6 is preferably designed to be clear and is therefore suitable in principle for non-diffuse light emission.
- the third zone 6 is not limited to a specific shape. It is preferred if the third zone 6 has a shape which corresponds to the shape of the inner region 5.
- the inner area 5 preferably consists of the third zone 6.
- the third zone 6 is preferably provided in order to emit the light emitted by a secondary illuminant (not shown in detail).
- This secondary light source can be, for example, an emergency light that is preferably only operated when a primary light source - i.e. the light source for emitting the light which is introduced into the optical element 1 for light emission by means of the first zone 3 and the second zone 4 - is not being operated or cannot be operated.
- the primary illuminant and the secondary illuminant are preferably functionally connected to a control device such as an operating device.
- the control device is preferably at least set up to recognize whether the primary illuminant is not being operated or cannot be operated, for example because a corresponding electrical
- Energy supply for the primary illuminant is not available; based this recognition then controls the control device in a corresponding manner the secondary illuminant - so switches it on to emit light, for example so that it can then emit light accordingly via the third zone 6, for example in the form of an emergency lamp.
- the third zone 6 is preferably designed to emit the light emitted by the secondary illuminant directly, that is to say in particular not to scatter it diffusely, in order to ensure good visibility of the light emitted by the secondary illuminant. This can be done in particular in that the third zone 6 is clearly formed.
- the third zone 6 For the simple provision of the third zone 6 and the secondary illuminant relative to one another, provision can be made for the third zone 6 to be designed as a recess for receiving the secondary illuminant.
- the recess preferably extends over the entire inner region 5 and / or over the entire third zone 6.
- the recess can have a depth which is less than the thickness of the optical element 1;
- the recess is preferably provided continuously or as access openings in the optical element 1.
- the second zones 4 are each provided to emit the light emitted via the second zones 4 at least partially in a defined manner, i.e. preferably not to break it in a defined manner or to deflect it or not to deflect it in a defined manner and thus in particular not to scatter it diffusely.
- FIGS. 5 to 7 show a further or fourth embodiment of a second zone 4.
- FIGS. 2 to 7 only one of the zones 4 of the optical element 1 is referred to; it goes without saying that this description also applies to the remaining zones 4 of the optical element 1.
- the embodiments of the second zones 4 shown in FIGS. 2 to 4 have in particular in common that the second zones 4 each have at least one light outcoupling structure 20, 30, 40, the at least one light outcoupling structure 20, 30, 40 being designed in such a way that that the second zones 4 are suitable for influencing the second part of the light introduced via the light coupling-in side in a non-diffusely scattering manner and thus emitting it directly in a defined or defined direction.
- This can be done, for example, by the respective at least one
- Light decoupling structure 20, 30, 40, 50 is formed clear (crystal clear).
- the respective at least one light outcoupling structure can also be designed as a through opening in order not to further influence the second part of the light introduced via the light infeed side and thus to emit it in a directly directed manner.
- FIG. 2 shows a first zone 4 with at least one light outcoupling structure 20 according to a first embodiment. It can be seen that the second zone 4 preferably has a plurality of light outcoupling structures 20.
- Light outcoupling structures 20 are preferably circular and / or punctiform, so that the respective second zone 4 has a circular or punctiform spotted pattern (“freckle” pattern).
- the light outcoupling structures 20 can, however, also have other shapes, for example elliptical, polygonal, rectangular, square, etc. shapes.
- the light outcoupling structures 20 are generally not limited to a specific size.
- the light outcoupling structures 20 can have identical or different sizes. It is preferred if each of the light outcoupling structures 20 has a width or a diameter in the range from 0.1 mm to 2 mm, particularly preferably in the range from 0.1 mm to 1 mm, or the width or the diameter, for example, essentially 1.5 mm.
- each of the light outcoupling structures 20 can have one
- the plurality of light outcoupling structures 20 are not restricted to a specific arrangement with respect to the respective second zone 4. As can be seen from FIG. 2, however, it is preferred if the several Light outcoupling structures 20 are distributed uniformly over the respective zone 4, for example corresponding to the shape of the respective second zone 4.
- the multiple light outcoupling structures 20, i.e. at least the outermost light outcoupling structures 20 or the light outcoupling structures 20 directly opposite the delimitation of the respective second zone 4, for example can be arranged in a hexagonal shape, since the respective second zone 4 preferably has a hexagonal shape.
- the light outcoupling structures 20 preferably do not completely cover the respective second zones 4. It is preferred if a distance is provided between the light outcoupling structures 20 directly opposite the delimitation of the respective second zone 4, on the one hand, and the delimitation of the respective second zone 4, on the other hand. For a particularly good light effect, this distance is preferably at least 3 mm.
- FIG. 3 shows a second zone 4 with a light outcoupling structure 30 according to a second embodiment.
- the respective second zone 4 preferably has only one light outcoupling structure 30.
- the light coupling-out structure 30 is clearly formed and an area corresponding to the shape of the respective second zone 4 and preferably encircling it in a closed manner.
- the light outcoupling structure 30 shown in FIG. 3 is therefore preferably a hexagonal area, that is to say, for example, an annular area in the form of a hexagon.
- the light outcoupling structure 30 in the form of an annular region can, however, also have other shapes, for example a circular, elliptical, polygonal, in particular square or rectangular shape.
- the area formed by the light outcoupling structure 30 is not limited to a specific arrangement with respect to the respective second zone 4. As FIG. 3 shows, it is preferred if the area formed by the light coupling-out structure 30 surrounds the respective second zone 4 and / or is provided in the middle with respect to the respective second zone 4. In other words, it can be provided that the area formed by the light outcoupling structure 30 delimits the second zone 4 from the first zone 3, that is to say the area formed by the light outcoupling structure 30 defines the shape of the respective second zones 4. That is, the
- Light outcoupling structure 30 or the corresponding area is preferably congruent with the shape of the respective second zone 4.
- the area formed by light outcoupling structure 30 can also be provided inside or outside the boundary of second zone 4.
- the light outcoupling structure 30 preferably has a width or thickness; the width of the light outcoupling structure 30 extends transversely to a circumferential direction of the light outcoupling structure 30, the light outcoupling structure 30 extending along this circumferential direction around which the
- the width of the light outcoupling structure 30 is preferably a constant width along the circumferential direction of the light outcoupling structure 30. This width is preferably in a range from 0.1 mm to 1 mm, particularly preferably in one
- the circumference or circumference of the light outcoupling structure 30 preferably corresponds to the circumference or circumference of the respective second zone 4, the circumference of the light outcoupling structure 30 is therefore preferably in a range from 5 mm to 35 mm, for example in a range from 10 mm to 30 mm.
- FIG. 4 shows a second zone 4 with a light coupling-out structure 40 according to a third embodiment.
- the light outcoupling structure 40 is clearly formed and covers the respective second zone 4 essentially completely. That is to say, the second zone 4 has only one light outcoupling structure 40, the respective second zone 4 consisting of this Light outcoupling structure 40 exists.
- the light outcoupling structure 40 thus also defines the shape of the respective second zone 4.
- the size of the light outcoupling structure 40 thus essentially corresponds to the size of the respective zone 4, that is, the circumference of the light outcoupling structure 40 can preferably be in a range of 5 mm to 35 mm, for example in a range from 10 mm to 30 mm.
- a fourth embodiment of the respective second zones 4 is shown by way of example in FIG.
- the embodiment of the zone 4 shown in FIG. 5 has one or more light outcoupling structures 50.
- Each of the light coupling-out structures 50 is designed to emit light in a defined direction such that the second part of the light introduced via the light coupling-in side can be emitted in defined directions with the multiple second zones 4.
- a second zone 4 emits light in a first defined direction by means of a light outcoupling structure 50 and a further second zone 4 emits light in a second defined direction by means of a light outcoupling structure 50, so that the second zones 4 - in this case the one and the other the further second zone 4 - emit the second part of the light introduced via the light coupling side in (different) defined directions.
- each of the second zones 4 has a plurality of light outcoupling structures 50.
- these multiple light outcoupling structures 50 are each triangular.
- the triangular light outcoupling structures 50 preferably adjoin one another.
- the multiple triangular light outcoupling structures 50 thus preferably form a mosaic consisting of the triangular light outcoupling structures 50, this mosaic partially or completely covering the respective second zone 4. That is to say, the plurality of triangular light outcoupling structures 50 preferably only partially or completely cover the respective second zone 4.
- adjacent light outcoupling structures 50 can adjoin one another in that the
- Triangular shapes of adjacent light outcoupling structures 50 have a common (triangular) leg. Thus, there is preferably no distance between adjacent light outcoupling structures 50.
- the surface normals N of the respective triangular light outcoupling structures 50 can be aligned differently with respect to the flat light outcoupling side 2. This can be seen in FIG. 6 by the differently aligned arrows, the directions of the arrows representing the components of the respective surface normals N projected onto the plane of the drawing. It can also be seen in FIG. 6 that these different directions (for an unlimited number of light outcoupling structures 50) are at least and preferably only six different directions (each second zone 4). In this way, due to the different orientations of the triangular light outcoupling structures 50, the light can be emitted from the triangular
- Light outcoupling structures 50 are emitted in the different, defined directions in order to thus generate a particularly advantageous brilliance for bringing about the three-dimensional appearance. As can be seen from FIG. 6, it is particularly preferred if the in
- this angle a is shown as an example for the two upper left triangular light outcoupling structures 50; the angle a is essentially 60 °.
- triangular light outcoupling structures 50 can also be provided in such a way that their surface normals N are directed in the same direction.
- the differently oriented surface normals N of the triangular light outcoupling structures 50 can be provided in different ways.
- the triangular light outcoupling structures 50 can be formed, for example, by a sawtooth-like or pyramid-like light outcoupling structure (prism) 51 of the triangular light outcoupling structures 50.
- the multiple light outcoupling structures 51 thus form a (prismatic) grating, this grating having a grating constant (period) of approximately 10 ⁇ m to 200 ⁇ m.
- the sawtooth-like light coupling-out structures 51 for the respective triangular light coupling-out structure 50 are designed in accordance with a pyramid or a sawtooth. That is, the sawtooth-like
- Light decoupling structure 51 has a base area 52 and a jacket area 53 extending away from base area 52.
- the jacket surface 53 in turn has at least one side surface 54.
- This side surface 54 forms the triangular light outcoupling structure 50.
- the side surface 54 has a specific orientation which corresponds to the surface normal N of the respective triangular light outcoupling structure 50; the alignment of the side surface 54 of the sawtooth-like light outcoupling structure is therefore also indicated in FIG.
- the alignment of the side surface 54 and thus the alignment of the respective triangular light outcoupling structure 50 i.e.
- each of the light outcoupling structures 50 is not restricted to a specific size.
- each of the triangular light outcoupling structures 50 has a width, the width being, for example, the height and / or the length of a leg of the triangle that forms the triangular shape in each case.
- the width is preferably in a range of 0,
- each light outcoupling structure 50 is preferably in a range from 1 mm to 5 mm. As shown by way of example in FIGS. 2 and 3, each of the second
- Zones 4 have one or more areas 60 in which no light outcoupling structure 20, 30, 50 is provided. As can be seen from FIG. 2, these areas 60 can for example be provided at least between the light outcoupling structures 20 and / or between the delimitation of the respective second zone 4 on the one hand and the outermost one
- the light outcoupling structure 30 can surround or delimit the regions 60 or the single region 60, preferably in a closed circumferential manner.
- the areas 60 are preferably designed such that light emitted via these areas 60 is emitted in a diffusely scattered manner. For diffuse light emission by means of the
- Areas 60 can for example at least partially have a Fresnel structure and / or a microstructure film.
- the diffusely scattering structures of the areas 60 preferably differ from the diffusely scattering structures of the first zone 3.
- a particularly preferred film for diffusely scattering or glare-free light emission by means of the areas 60 is known under the trade name G-GPHM from the company bright view technologies.
- the optical element 1 is not limited to a specific material as long as the optical element 1 can provide the light output as described above, in particular by means of zones 3 and 4 and preferably also by means of zone 6. It is preferred if the optical element 1 is made of a thin-walled material such as a film, for example.
- the optical element 1 is therefore preferably designed to be flat or planar. However, the optical element 1 does not necessarily have to be provided in the form of a film; for example, the optical element 1 can also be provided in the form of a plate.
- FIG. 1 shows an exemplary embodiment of the optical element 1.
- optical element 1 can also be half of a further exemplary embodiment of an optical element 1, so that the complete optical element 1 is reflected by mirroring this half on the width side or the side of the half optical element 1 having the inner region 5 results.
- Another exemplary embodiment of the optical element 1 can result, for example, from mirroring the optical element 1 according to FIG
- Such a flat luminaire generally has a flat light guide with a flat light coupling-out side for emitting light introduced into the light guide.
- the flat light guide has a front side that has or forms the flat light coupling-out side, a flat rear side and a front side connecting the front side with the rear side, with the light, for example emitted from a light source (LED etc.), into the light guide via the front side is initiated.
- LED light source
- the rear side of the light guide preferably has a reflector.
- the light guide also has decoupling structures, for example in the form of (mechanical) damage to the surface.
- the rear side of the light guide has the coupling-out structures.
- the aim of these decoupling structures is to deflect the light coupled into the light guide at the front, for example, to the front of the light guide in order to emit the light over a large area via the light guide via the front or light output side of the light guide.
- the distance between adjacent coupling-out structures is, for example, approx. 0.5 mm to 2 mm, and / or the coupling-out structures preferably have a size, for example diameter or width, of approx. 0.1 mm to 1 mm
- the optical element 1 is provided with respect to the flat lamp in such a way that the flat light coupling side of the optical element 1 is in preferably flat contact with the flat light coupling-out side of the light guide; the optical element 1 is therefore arranged downstream of the lamp or the light guide in the light emission direction.
- the optical element 1 can cover the entire front side of the flat light guide and thus, for example, form the front side of the flat light.
- the light emitted by the light guide via the light coupling-out side of the light guide can be introduced into the optical element 1 via the flat light coupling-in side of the optical element 1.
- the light emitted by the flat lamp or the flat light guide can thus be emitted via the light coupling-out side 2 of the optical element 1.
- the present invention is not limited to the foregoing preferred embodiments as long as it is encompassed by the subject matter of the following claims.
- the second zones 4 are designed only in accordance with the second zone 4 shown in FIG. 2 or in FIG. 3 or in FIG. 4 or in FIG to generate three-dimensional appearance of the optical element 1.
- a first number of the second zones 4 is formed according to the second zone 4 shown as an example in FIG. 2
- a second number of the second zones 4 is formed according to the second zone 4 shown as an example in FIG second zone 4 is formed in accordance with the second zone 4 shown by way of example in FIG. 4
- / or a fourth number of the second zones 4 is formed in accordance with the second zone 4 shown by way of example in FIG. 5.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019125640.2A DE102019125640A1 (de) | 2019-09-24 | 2019-09-24 | Optisches Element |
| PCT/EP2020/075991 WO2021058373A1 (de) | 2019-09-24 | 2020-09-17 | Optisches element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4034805A1 true EP4034805A1 (de) | 2022-08-03 |
Family
ID=72561783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20775258.5A Pending EP4034805A1 (de) | 2019-09-24 | 2020-09-17 | Optisches element |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4034805A1 (de) |
| DE (1) | DE102019125640A1 (de) |
| WO (1) | WO2021058373A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022109228A1 (de) | 2022-04-14 | 2023-10-19 | HELLA GmbH & Co. KGaA | Beleuchtungsvorrichtung für Fahrzeuge sowie Herstellungsverfahren |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5967648A (en) * | 1998-02-09 | 1999-10-19 | Lexalite International Corporation | Lighting fixture including a neutral density polymeric material for controlled light distribution |
| TW200940871A (en) * | 2008-01-08 | 2009-10-01 | Koninkl Philips Electronics Nv | Lighting system |
| DE102010014209A1 (de) * | 2010-04-08 | 2011-10-13 | Siteco Beleuchtungstechnik Gmbh | Leuchte mit optischer Platte |
| TWI497105B (zh) * | 2013-05-29 | 2015-08-21 | Ubright Optronics Corp | 多功能複合型光學膜 |
| US9632230B2 (en) * | 2014-05-05 | 2017-04-25 | Continental Automotive Systems, Inc. | Light guide assembly for display illumination |
-
2019
- 2019-09-24 DE DE102019125640.2A patent/DE102019125640A1/de active Pending
-
2020
- 2020-09-17 EP EP20775258.5A patent/EP4034805A1/de active Pending
- 2020-09-17 WO PCT/EP2020/075991 patent/WO2021058373A1/de not_active Ceased
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| Publication number | Publication date |
|---|---|
| DE102019125640A1 (de) | 2021-03-25 |
| WO2021058373A1 (de) | 2021-04-01 |
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