WO2017129503A1 - Système optique destiné à influer sur l'émission de lumière d'une source de lumière - Google Patents

Système optique destiné à influer sur l'émission de lumière d'une source de lumière Download PDF

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Publication number
WO2017129503A1
WO2017129503A1 PCT/EP2017/051273 EP2017051273W WO2017129503A1 WO 2017129503 A1 WO2017129503 A1 WO 2017129503A1 EP 2017051273 W EP2017051273 W EP 2017051273W WO 2017129503 A1 WO2017129503 A1 WO 2017129503A1
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WO
WIPO (PCT)
Prior art keywords
light
reflector
optical system
lens
insert
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.)
Ceased
Application number
PCT/EP2017/051273
Other languages
German (de)
English (en)
Inventor
Stephan Pieper
Sebastian Schade
Christian Kohler
Andreas NIEDERSTÄTTER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zumtobel Lighting GmbH Austria
Original Assignee
Zumtobel Lighting GmbH Austria
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Priority to EP17701834.8A priority Critical patent/EP3408587B1/fr
Publication of WO2017129503A1 publication Critical patent/WO2017129503A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • 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
    • F21V5/04—Refractors for light sources of lens shape
    • 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
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
    • 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
    • F21V5/08—Refractors for light sources producing an asymmetric light distribution
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0083—Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional [2D] array of point-like light-generating elements
    • F21Y2105/14—Planar light sources comprising a two-dimensional [2D] array of point-like light-generating elements characterised by the overall shape of the two-dimensional [2D] array
    • F21Y2105/16—Planar light sources comprising a two-dimensional [2D] array of point-like light-generating elements characterised by the overall shape of the two-dimensional [2D] array square or rectangular, e.g. for light panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to an optical system which is provided for influencing the light output of a light source and has at least one pot-like reflector which forms a light exit opening, is emitted via the light. Furthermore, the present invention relates to a lamp in which a
  • corresponding optical system is used, wherein it may be in the lamp in particular a lamp, which is used outdoors.
  • Lights with the help of certain areas or objects to be illuminated, must necessarily have means by which the light generated by the bulbs is selectively emitted into the area to be illuminated.
  • these are additional optical elements to the light sources which, by reflection and / or refraction of the light, influence this in such a way that it is aligned in the desired manner in accordance with the lighting situation.
  • Lamps were used in the form of elongated fluorescent lamps or the like, LEDs are now used as a rule, in which case usually each LED reflector bulb is associated with an LED bulb.
  • the light sources may each be individual LEDs or clusters, for example a plurality of differently colored LEDs, which then ultimately emit a mixed light in the desired color or color temperature.
  • the design of the reflector is then such that due to the shape of the
  • Reflector wall and the corresponding positioning of the light source relative to the reflector all light beams are influenced so that they can leave the reflector only within a certain angular range, wherein the
  • Angle range is selected such that the light output takes place in the desired direction. Outside of this defined primarily by the design of the reflector area, however, then takes place almost no light output, so that on this Way the light can be influenced very simply and effectively. Reflectorrasters of this type are therefore used very frequently and in different fields of application, for example to realize a so-called glare-free illumination or to avoid disturbing reflections on screen surfaces or the like.
  • the complete restriction of the light output to the angle range predetermined by the reflector has the consequence on the other hand that the luminaire or the switched-on state of the luminaire is only recognizable by an observer when it is in the solid angle range in which the by the reflector predetermined light emission takes place. On the other hand, if the observer is outside this angular range, the light initially appears dark from his point of view.
  • Light output which is achieved with the help of additional light sources, for example, direct light on the ceiling of a room in which the light is located, or laterally diffuse light.
  • Brightness increases in the transition from a non-illuminated area to a lighted area should be avoided.
  • Reflektorrastern or pot-like individual reflectors can also result in other types of optics.
  • TIR lenses are used to influence the light of LEDs, which very efficiently bundle the light originally emitted by the LED in a very wide angular range, ie restricting it to a specific angular range. Also in this case occur at the transition between the non-illuminated area and the illuminated area strong differences in brightness, which are perceived as unpleasant.
  • optical system which has the characteristics of
  • the solution according to the invention is based on the idea of influencing the light output of a light source, for example an LED, on the one hand with the aid of a pot-type reflector and on the other hand with the aid of a lens.
  • a light source for example an LED
  • the lens is designed such that a first portion of the light is radiated substantially independently of the reflector in a preferred direction defined by the lens.
  • the lens is additionally designed to deliver a second portion of the light laterally such that this portion falls onto the inner wall of the reflector.
  • This reflector wall is designed in particular diffusely reflecting, so that it appears slightly lightened by the second portion of the light from different angles.
  • Observers should be excluded and in which, accordingly, the primary portion of the light with the help of the lens is not delivered, so the inner wall of the reflector appears slightly brighter and can be detected by an observer. This is for the observer even before reaching the directly illuminated by the lens
  • Brightness differences in the transition to the area directly illuminated by the first portion are accordingly no longer perceived as disturbing.
  • an optical system for influencing the light output of a light source which has a pot-like reflector having a light exit opening, and a lens which is adapted to a first portion of the light through the light exit opening of the reflector in a through Furthermore, the lens is adapted to deliver a second portion of the light laterally such that this portion falls on the reflector inner wall.
  • the pot-shaped reflector thus fulfills less the task of restricting the light output to a certain angular range compared to previous light grids, but rather serves to diffuse a small proportion of light diffusely in different directions in order to make the on state of the luminaire recognizable .
  • the actual light control is made by the lens, so here is a completely new interaction of the two optical elements reflector and lens is present.
  • the lens may be a so-called TIR lens in a classical manner. It then points in this case, first, one of the light source facing, for example
  • collimator on This may have a light source facing the recess whose mantle and bottom surface a
  • Light entry surface of the lens forms, wherein in a known manner, the LED is then positioned in the region of this recess.
  • the lens may then have a substantially planar light exit surface according to a first embodiment.
  • the light is then preferably emitted in a direction that is substantially parallel to the vertical with respect to the plane of the light exit opening of the reflector.
  • a whitening of the reflector inner wall by the second portion of the light can then be achieved, for example, by using stray light which is emitted by the lens.
  • this effect can also be specifically enhanced by, for example, selectively providing edge regions of the light exit surface of the lens with a corresponding scattering structure.
  • the emission of the first light component takes place in a direction which is inclined with respect to an axis perpendicular to the plane of the light exit opening of the reflector.
  • This may be desirable in particular when e.g. the reflector is oriented vertically downwards, with the help of the lamp, however, for example, an asymmetrical light output is to be achieved, as is desired in lights for street lighting or the like.
  • lenses must then be used which cause an asymmetrical light output, which can be done, for example, by virtue of the fact that the light exit region of the lens has a so-called Fresnel structure.
  • a scattering or decoupling structure is formed on the circumference of the Fresnel structure, via which the second light component is emitted.
  • the lens is preferably arranged at least with its light exit region or the Fresnel structure within the reflector.
  • the so-called glow reflector insert according to the invention which preferably has a constant wall thickness, can in this case be formed, for example, from PMMA or PC.
  • the optical system is designed such that it has a plurality of reflectors, which are arranged in the manner of a matrix and jointly form a corresponding grid.
  • the reflectors may in this case be at least partially connected to one another in one piece. Then come the above-mentioned additional inserts of the transparent and diffusely scattering material used, so these are preferably made in one piece, so that they can be recognized in a corresponding manner from the light exit side to the grid and locked for example with this.
  • a preferred application example of the invention is a luminaire in the outer area.
  • This may be both a luminaire, bundling the targeted light emits in a desired area to illuminate, for example, an object located in this area or the like.
  • a luminaire which is used, for example, to illuminate a street or a sidewalk and accordingly effects an asymmetrical light output overall, which enables illumination of a longer road section.
  • Figures 1 and 2 are views of a first embodiment of a lamp in which the optical system according to the invention is used;
  • Figures 3 to 5 are views of a single, for the production of light
  • Figures 6 and 7 are views of a reflector grid, which is part of the in the
  • Figures 3-5 is a lighting assembly;
  • Figure is a side view of a glow insert according to the invention for the reflector grid;
  • Figure 9 shows the process of assembling the lamp assembly
  • Figures 10 to 12 are views of a lens according to the invention, with the aid thereof
  • Figure 13 is an enlarged view of the lens of Figures 10 to 12; 14 shows a second embodiment of a luminaire, in which the optical system according to the invention consists of a
  • Reflector and a glow insert can be used and
  • Figures 1 and 2 show first two perspective views of a first, provided for outdoor use light, in the figures generally with the
  • Reference numeral 100 is provided. It is a lamp whose optical system - as explained in more detail below - is designed so that an asymmetric light output is achieved, such that seen in the longitudinal direction L of the lamp 100 takes place a very strong expansion of the emitted light. If such a light fixture is, for example, attached to a columnar support or to a house wall, then, for example, the underlying road area can be illuminated on both sides over a greater distance. Accordingly, the illustrated luminaire 100 is particularly suitable for illuminating roads, carriageways and / or sidewalks.
  • the luminaire 100 is constructed in two parts with an approximately parallelepiped-shaped first module 110 and a second module 120, the so-called light-emitting module, which is likewise of cuboid design and fastened to the first module 110.
  • the first module 110 hereby includes a majority of the electronic
  • Components of the lamp 100 in particular the necessary means for converting the general supply voltage in a suitable operation of the lamp operating voltage.
  • This may in particular be a correspondingly designed LED converter.
  • connection region 115 which is formed on a rear wall 111 of the first module 110.
  • This connection area 115 is also the connection to external
  • connection region 115 defines an axis of rotation R, around which the first module 110 and thus the luminaire 100 can be rotated or pivoted in total, at least in a certain angular range.
  • the light-emitting module 120 is also cuboid-shaped according to the illustration and, seen in the longitudinal direction, has comparable dimensions to the first module 110, but is arranged slightly offset from this for aesthetic reasons.
  • the attachment of the lamp module 120 to the first module 110 may be rigid in this case.
  • Bulb module 120 can be pivoted about an axis which is parallel to the longitudinal direction L. Again, the connection may be made such that the pivoting of the lamp module 120 is limited to a certain angle range. In case of use as a lamp for street lighting can then, for example, by the swiveling the light output to the distance between the lane to be illuminated and the support to which the lamp 100 is attached, be adjusted. In the following, the design of the illuminant module 120 will be explained in the first place, since this includes the optical components according to the invention.
  • the illuminant module 120 within the cuboid housing has a matrix-like arrangement of luminous means and associated optical elements. These optical elements form i.a. a grid-like reflector arrangement, wherein the light exit opening of the
  • Illuminant module 120 is covered by a transparent plate 125.
  • This transparent pane 125 serves primarily to protect the components responsible for light generation from external influences, but preferably does not influence the light output of the luminaire 100.
  • Assembly here has four individual lamps in the form of LEDs and associated optical elements for influencing the light output. This means that in the case of the luminaire 100 shown in FIGS. 1 and 2, a total of eight
  • corresponding lamp assemblies 50 are used, which are arranged in two adjacent rows of four modules 50. However, of course, depending on the size of the lamp and the number and arrangement of the lamp assemblies 50 are selected accordingly. As will be explained in more detail below, in this case the illuminant assemblies 50 are identical except for the orientation of the lenses used.
  • Each module has, as shown in Figures 3-5 recognizable initially
  • Carrier element in the form of an approximately square circuit board 55, on the first time responsible for the light generation, not visible in the figures LEDs are arranged. These can be single LEDs and, if necessary, also LED clusters, which ultimately emit a mixed light in the desired color.
  • the circuit board 55 also serves to hold the other optical components that are responsible for influencing the light output. It This is first about lenses 10, as well as pot-trained
  • Both the lenses 10 and the reflectors 20 are preferably each connected together to form an assembly in order to keep the number of individual parts during assembly of the lamp 100 as low as possible. In particular, however, the lenses 10 could possibly also be present as individual components. However, the four pot-like reflectors 20 are preferably combined to form the 2x2 grid 30 shown in isolation in FIGS. 6 and 7, since otherwise a correspondingly coordinated positioning of the individual reflectors 20 would be very complicated and cumbersome.
  • the individual reflectors 20 of the grid 30 are each made approximately truncated pyramidal and each have a square light exit opening 21 and this opposite a circular bottom opening 22.
  • a special feature here is that the light exit openings 21 of the individual reflectors 20 have no square or rectangular shape, but instead represent an irregular square, so that there is also a distorted truncated cone shape for the reflector 20.
  • the four light exit openings 21 of the 2x2 reflector grid 30 form a square. This is primarily a
  • the reflector raster 30 formed from the four reflectors 20 is then fastened to the carrier board 55 via a latching pin 31 provided on its underside (see Figure 7), it being understood that other fastening measures may of course also be provided.
  • the reflector rasters 30 in the present inventive solution are merely a secondary element for the light emission of the luminaire 100.
  • the light output is determined by the lenses 10 individually associated with the light sources.
  • the shape of the lenses can be taken in particular from FIGS. 10-12, which are so-called TIR (total internal reflection) lenses which initially have a collimator 11 facing the light source.
  • This collimator 11 is, as shown in the present example, rotationally symmetrical in the form of a truncated cone and has an approximately circular recess 12 on its light entry side. The positioning takes place in such a way that the LED projects into this recess 12 and accordingly all the light of the LED falls into the collimator 11.
  • On the lateral surface of the collimator 11 is then carried out in a known manner internal total reflection of the light, so that it is initially aligned substantially parallel.
  • TIR lenses are already known with a collimator facing the light source.
  • the light exit region 15 of the lens adjoining the collimator 11 has a fresnel-like structure 16 with the aid of which the light is radiated asymmetrically in a preferred direction.
  • Light exit region 15 is connected to the collimator 11 via a disc-like intermediate region 14, which, however, does not have a significant influence on the light output, but primarily serves to completely fill the bottom opening 22 of the associated cup-shaped reflector 20 in the assembled state of the optical system.
  • the reflectors 20 are then arranged at a distance from the board 50 and the light sources, this distance being bridged by the collimator 11 of the respective lens 10.
  • the fresnel-like structure 16 of the lens which can be seen particularly well in FIGS. 10 and 12, causes an asymmetrical light emission in a preferred direction, as already mentioned. This is achieved in particular by the inclined top surfaces of the individual rib-like Fresnel segments, on which the light in turn is preferably totally internally reflected and then obliquely decoupled as shown in FIG.
  • the orientation of the lens 10 and thus the preferred direction, in which primarily the light emission takes place, is also by a on the
  • Disc-shaped intermediate portion 14 formed arrow-like mark 14a visible, so that it is immediately apparent in which direction the light is emitted.
  • the light output of the lens 10 via the Fresnel structure 16 is preferably such that it is no longer or only insignificantly influenced by the reflector 20 surrounding the lens 10.
  • the four lenses 10 of a single light assembly 50 are each aligned identically so that a light source assembly 50 emits light uniformly in a specific preferred direction.
  • the illuminant assemblies 50 used in the luminaire 100 shown in FIGS. 1 and 2 then differ in respect of the orientation of the associated lenses 10, so that each luminous means assembly 50 emits light in a slightly different angular range.
  • Lichtabstrahlraumen the lighting assemblies 50 then leads to the overall stretched longitudinally and thus asymmetric light output, as it is, as already mentioned, strived for street lighting.
  • the illustrated variant, in which all lenses 10 of a light assembly 50 have the same orientation, however, is advantageous in that the failure of a single LED does not adversely affect the total light output of the lamp 100 and is not to be feared that then subregions of the total area to be illuminated are no longer illuminated.
  • the overall resulting embodiment of a lighting device assembly 50 can then be taken, for example, the representation of Figure 4. That is, the light of each LED is first coupled into the collimator 11 of the associated lens 10 and then radiated via the fresnel-like light extraction region 15 of the lens 10. While the collimator 11 is still arranged below or outside of the pot-like reflectors 20, the light outcoupling region 15 projects into the reflector space.
  • the lenses 10 are first placed on the LEDs and then the reflector grid 30 is attached in the next assembly step.
  • a special feature of the lenses 10 used is that, although the light is primarily emitted as desired in the preferred direction defined by the Fresnel structure 16, specifically an at least small further portion of the light laterally or over the circumference of the light exit region 15 is discharged so that it falls on the walls of the cup-shaped reflector 20.
  • decoupling surfaces or structures 17 which are shown in Figure 13 and are responsible for the fact that a small proportion of the light is emitted in other directions, in particular in the opposite direction to the preferred light emission direction out.
  • the (surface) portion of these decoupling surfaces 17 is relatively low, since only a very small proportion of the light is to be used to lighten the surrounding reflector walls. Basically, this effect would also be by a corresponding roughening or reachable by the addition of scattering particles in the lens material, since such a total scattering but the effect of the Fresnel structure 16th
  • Each lens 10 thus ensures that a first - preferably large - proportion of the light is emitted in the desired preferred direction and a second - preferably smaller - proportion as possible over the entire circumference on the walls of the pot reflector 20 falls.
  • diffuse scattering of the light take place, which causes that in the on state of the lamp 100, the reflector walls appear illuminated even at very shallow viewing angles. That is, even for persons who are outside the actually illuminated area, i. in the directly illuminated by the lenses 10 area, the appear
  • Reflector walls brighter and it is therefore clear beyond doubt whether the light is activated or not. In this way, the eye is also early the possibility opened, to adapt to the brightness transition when approaching the illuminated area, so then no strong or disturbing glare occur at the transition between a not illuminated by the lens area and a lighted area.
  • the walls of the reflector are formed diffusely scattering. That is, in a first variant, it would be conceivable that the reflector raster is formed of a material which causes a diffuse scattering, or the reflector surfaces could be provided with a diffusely scattering coating.
  • the diffuse scattering of the second light component takes place by means of an additional reflector insert, which can be seen in FIGS. 8 and 9 and is provided with the reference numeral 40.
  • the insert 40 is similar in terms of its design and shape of the reflector raster 30, so in turn has four cup-shaped, frusto-conical portions 45, each having a light exit opening 46 and this opposite a circular
  • Form input port 47 Also with regard to the asymmetrical design of the openings 46 of the insert 40 is similar to the reflector grid 30.
  • the dimensions of the insert 40 are now selected, however, such that the outer contour of the Insert 40 of the inner contour of the reflector grid 30 corresponds, so that the insert 40 can be positively inserted from the top into the reflector grid 30.
  • the reflector grid 30 and the insert 40 is made in one piece, and in the case of the use of individual reflector pots here, the use of individual inserts would be conceivable.
  • This reflector insert 40 is now made of a transparent material, such as PMMA or PC, which is additionally provided with scattering particles, so that the insert 40 can cause the above-mentioned, the desired scattering of the second light component in total. Thereby, however, that the insert 40 from a transparent material, such as PMMA or PC, which is additionally provided with scattering particles, so that the insert 40 can cause the above-mentioned, the desired scattering of the second light component in total. Thereby, however, that the insert 40 from a transparent material, such as PMMA or PC, which is additionally provided with scattering particles, so that the insert 40 can cause the above-mentioned, the desired scattering of the second light component in total. Thereby, however, that the insert 40 from a transparent material, such as PMMA or PC, which is additionally provided with scattering particles, so that the insert 40 can cause the above-mentioned, the desired scattering of the second light component in total. Thereby, however, that the insert 40 from a transparent material, such as PMMA or PC, which
  • the light scattering takes place not only on the surface, but also on the distributed within the material of the insert 40 scattering particles and possibly also on the surface of the underlying
  • the insert 40 preferably has a substantially constant wall thickness and is inserted into the reflector grid 30 when the assembly 50 is assembled-as can be seen in FIG. 9 -in the final assembly step.
  • lens shape is limited, but can also be used in other primary optics.
  • FIG 14 a further embodiment of a lamp 200 according to the invention is shown in Figure 14, which basically corresponds in its construction of the first lamp 100.
  • a first module 210 which includes the electronic components, as well as a second module 220 containing the lamps, wherein a coupling of both modules 210, 220, can be made such that a pivoting of the lamp module 220 is possible .
  • the basic structure of the lamp assemblies is again identical to that of the lamp according to Figures 1 and 2, but now no asymmetric light distribution is sought, but instead the light should rather concentrated to a certain area to be delivered.
  • the illuminant assemblies have differently designed lenses. In particular, lenses are now used here, as shown in FIGS. 15 and 16.
  • These lenses 60 in turn have a frusto-conical collimator section 61, which has a recess 62 facing the light source, whose bottom and lateral surface forms the light entry surface of the lens.
  • a frusto-conical collimator section 61 which has a recess 62 facing the light source, whose bottom and lateral surface forms the light entry surface of the lens.
  • no Fresnel-type light-emitting region 15 is now required by which the light is emitted asymmetrically.
  • the light exit region 65 of the lens 60 of Figures 15 and 16 by a plane
  • a plate-shaped holding part 67 is now provided, which has a defined positioning of the lens 60 on the
  • Carrier element of the lamp assembly allows.
  • the collimator region 61 of the lens 60 ends with the associated light exit surface in the region of the bottom-side opening 22 of the associated pot-type reflector 20.
  • the light output is determined primarily by the lens 60 itself, less by the reflector 20. Again, however, stray light can occur, which is used to lighten the peripheral reflector walls of the pot-shaped reflector 20. Also in this case, therefore, either the reflector 20 may be formed diffusely scattering or as in the lamp of Figures 1 and 2 additionally within the reflector grid 30, a corresponding reflector insert 40 may be provided. This either can not be done completely anyway
  • suppressive stray light emitted by the lens 60 can be utilized. It would also be possible, for example, by the introduction of scattering Particles or structures in the edge region of the light exit surface 65 to emit a slight amount of light such that it illuminates the reflector walls. That is, even in this second illustrated lamp 200, the advantageous effect can be obtained that a person located outside the illuminated area can easily recognize the on state of the lamp 200.
  • the concept according to the invention allows extremely effective emission of light into a desired range, despite all the disadvantages hitherto resulting in a strong light control.
  • the application of the optical system according to the invention is not limited to lights for outdoor use, but can in any types of lights

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne un système optique destiné à influer sur l'émission de lumière d'une source de lumière, lequel système présente un réflecteur (20) du type pot qui présente une ouverture de sortie de lumière (21), ainsi qu'une lentille (10) conçue pour réfléchir une première partie de la lumière par l'ouverture de sortie de la lumière (21) du réflecteur (20) dans une direction préférentielle définie par la lentille (10), ladite lentille (10, 60) étant en outre conçue pour émettre une deuxième partie de la lumière latéralement de sorte que cette partie soit incidente sur la paroi intérieure du réflecteur.
PCT/EP2017/051273 2016-01-29 2017-01-23 Système optique destiné à influer sur l'émission de lumière d'une source de lumière Ceased WO2017129503A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17701834.8A EP3408587B1 (fr) 2016-01-29 2017-01-23 Système optique destiné à influer sur l'émission de lumière d'une source de lumière

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016201347.5A DE102016201347B4 (de) 2016-01-29 2016-01-29 Optisches System zum Beeinflussen der Lichtabgabe einer Lichtquelle
DE102016201347.5 2016-01-29

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WO2017129503A1 true WO2017129503A1 (fr) 2017-08-03

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PCT/EP2017/051273 Ceased WO2017129503A1 (fr) 2016-01-29 2017-01-23 Système optique destiné à influer sur l'émission de lumière d'une source de lumière

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AT (1) AT16514U1 (fr)
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AT16514U1 (de) 2019-11-15
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DE102016201347A1 (de) 2017-08-03
DE102016201347B4 (de) 2024-09-19

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