EP4248129A1 - Système d'éclairage et procédé pour produire une tache de lumière de taille réglable - Google Patents

Système d'éclairage et procédé pour produire une tache de lumière de taille réglable

Info

Publication number
EP4248129A1
EP4248129A1 EP21819382.9A EP21819382A EP4248129A1 EP 4248129 A1 EP4248129 A1 EP 4248129A1 EP 21819382 A EP21819382 A EP 21819382A EP 4248129 A1 EP4248129 A1 EP 4248129A1
Authority
EP
European Patent Office
Prior art keywords
lighting
spot
light
lighting means
primary optics
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
Application number
EP21819382.9A
Other languages
German (de)
English (en)
Inventor
Axel Meise
Stefan Wolfram
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.)
Occhio GmbH
Original Assignee
Occhio GmbH
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 Occhio GmbH filed Critical Occhio GmbH
Publication of EP4248129A1 publication Critical patent/EP4248129A1/fr
Pending 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • 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 array of point-like light-generating elements
    • F21Y2105/14—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array
    • F21Y2105/16—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/14—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array
    • F21Y2105/18—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam
    • 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]
    • F21Y2115/15—Organic light-emitting diodes [OLED]

Definitions

  • the present invention relates to an illumination arrangement for generating a light spot according to the subject matter of claim 1 and an associated method according to the subject matter of claim 11.
  • Modern lighting systems are required to be able to set as many lighting parameters as possible by the user.
  • dimmable lighting systems are known in which the brightness or light intensity of the lighting system can be changed by a user.
  • Another parameter for which there is a need for adjustability is the light distribution produced by the lighting system.
  • DE 10 2017 213 488 A1 describes a lamp with a controllable emission characteristic that has mechanically movable decoupling optics. By moving the decoupling optics, the radiation characteristics of the lamp are changed.
  • Such a construction has various disadvantages. Either the decoupling optics must be moved manually by a user, which is perceived as cumbersome and time-consuming. Alternatively, the decoupling optics can be moved by means of a drive provided for this purpose. However, this increases the design effort. In addition, the drive generates disturbing noises when the decoupling optics are moved.
  • the object of the present invention is to provide a way of illuminating an illuminated area with a spot with an adjustable size, which is characterized by a small distinguishes constructive effort and in which no mechanically moving elements are required to adjust the spot size.
  • a lighting arrangement for generating a light spot on an illuminated surface with an adjustable, preferably steplessly adjustable, spot size, having a large number of brightness-controllable or dimmable lamps, at least one primary optics and a control unit that is designed to operate the lamps independently of one another head for; wherein the lighting means and the at least one primary optics are arranged in such a way that essentially concentric individual light spots of different sizes can be generated on the lighting surface, and wherein the control unit is designed to control the lighting means in such a way that the individual light spots produced on the lighting surface can be superimposed on a light spot with an adjustable spot size.
  • An essential idea of the invention consists in providing a large number of dimmable light sources for adjusting the spot size of the lighting arrangement, which are combined with at least one primary optics in order to generate concentric individual light spots of different sizes on a common lighting area.
  • To set the spot size the brightness or emission intensity of the lamps is controlled so that the individual light spots are superimposed on the lighting surface to form a light spot with an adjustable spot size.
  • no mechanically moving components are required to adjust the spot size.
  • the setting of the spot size is realized by (ultimately purely electronic) control of lighting means which, like the at least one primary optics, are arranged immovably in the lighting arrangement. This completely avoids the disadvantages that arise when adjusting the spot size using mechanically movable components.
  • the spot size is set purely digitally by controlling the lamps accordingly via the control unit.
  • a spot, individual light spot and light spot are to be understood as meaning a brightness distribution which can be generated on an illuminated surface and which forms a coherent region on the illuminated surface.
  • the individual light spots preferably form an essentially circular or ring-shaped area on the illumination surface.
  • the illumination area on which a light spot with an adjustable spot size can be generated by means of the illumination arrangement is not subject to any particular restriction.
  • the illumination surface is a substantially planar surface, such as a wall or floor in an indoor or outdoor space.
  • a characteristic dimension of the spot on the illuminated surface can be used to determine spot sizes. For example, if a spot forms a substantially circular or ring-shaped area, an area in which the brightness or luminosity exceeds a predetermined fraction of the maximum brightness or luminosity that occurs, for example 50% of the maximum brightness or luminosity of the spot, can be defined , and the spot size can be set as the diameter of this area.
  • the spot size it is only necessary that the individual light spots assigned to the lamps are essentially concentric, i.e. that individual light spots can be generated on the lighting surface in such a way that individual light spots with a smaller spot size within individual light spots larger spot sizes or are circumscribed by them.
  • the size of the light spot which results from a superimposition of individual light spots, can then be adjusted by superimposing or overlaying the individual light spots by means of the control unit.
  • the number of illuminants used is not subject to any particular restriction. The more bulbs are used, the larger the range of the adjustable size of the light spot. Preferably, three or more illuminants are used to provide a satisfactory spot size adjustment range.
  • the primary optics used within the scope of the invention are not subject to any particular restriction. It is essential that they are so adapted to the bulbs in terms of their arrangement and design that with the Light sources that can be generated emission pattern in the form of substantially concentric individual light spots on the lighting surface is imaged. If, for example, LED-based illuminants are used as illuminants, which emit an essentially conical light distribution, a collimating element such as a lens or a lens system can be preferred as the primary optics, with which the emission angle of the illuminant can be modified.
  • the primary optics can each be formed by an optical element (such as a lens) or have multiple components (for example a lens system made up of multiple lenses).
  • the lighting arrangement has a large number of primary optics, with each illuminant being assigned at least one, preferably precisely one, primary optic, which are each designed and arranged in such a way that one of the individual light spots can be generated on the illuminated surface with each illuminant is.
  • each illuminant forms a functional unit with the primary optics assigned to it, so that the primary optics assigned to the illuminants can be matched to the respective illuminant in order to generate the individual light spots of different sizes with the respective illuminant on the illuminated surface.
  • one primary optic is preferably assigned to each illuminant. This allows a simple constructive implementation of units each consisting of a light source and a primary optics for generating the individual light spots of different sizes.
  • the lighting means with the respective associated primary optics can then be arranged in spatial proximity to one another, for example, in such a way that the light emission for illuminating the illuminated area takes place essentially in the same direction.
  • light sources with small spatial extents are used, for example LED-based light sources.
  • LED-based light sources With such light sources, a substantially rotationally symmetrical, approximately conical light distribution with a predetermined angle of emission can be generated in one emission direction.
  • the respective primary optics can be used to provide different Setting the beam angle for the individual lamps, for example by using collimating elements such as lenses with different refractive powers as primary optics. This means that individual light spots of different sizes can be generated on the illumination surface in a structurally simple manner, since the size of the individual light spots varies with the radiation angle set in each case.
  • the angle at which the intensity is a predetermined fraction, for example 50%, of the maximum intensity occurring in the light distribution can be defined as the emission angle in the usual way.
  • the lighting means with the respectively associated primary optics at a distance from one another and to arrange them in such a way that the illumination surface can be illuminated with individual light spots of different sizes.
  • collimating elements such as lenses can be used as primary optics.
  • the primary optics can be selected in such a way that several light sources generate light distribution with the same beam angle.
  • the illuminants with the associated primary optics are then arranged at different distances from the illuminated area.
  • a plurality of light sources can be arranged at substantially the same distance from the lighting area. Different sizes of the individual light spots that can be generated in each case can then be achieved by setting different emission angles by means of suitable configurations of the primary optics.
  • the lighting arrangement has a common primary optics for the lamps, the lamps and the primary optics being arranged in such a way that one of the individual light spots on the illuminated surface can be generated with each lamp using the primary optics.
  • a structurally particularly compact variant of the lighting arrangement can be implemented, which requires a reduced number of components, since common primary optics for generating the individual light spots are provided for all illuminants. Since a common primary optics is used for the lighting means within the scope of the present embodiment, it is preferable for the lighting means to be arranged spatially close to one another. If, for example, LEDs are used as lighting means, it can be preferred to provide an LED matrix or an LED cluster in which several groups of LEDs can be controlled together. The jointly controllable LEDs each form a lighting means according to the invention.
  • the lighting means are arranged essentially concentrically.
  • organic light-emitting diodes OLEDs
  • an LED matrix or an LED cluster can be used with groups of LEDs that are independently drivable, with each separately drivable group of LEDs forming a light source and the groups of LEDs being essentially concentric areas within the LED form the matrix or the LED cluster.
  • concentrically arranged light sources of different sizes are formed, with which individual light spots of different sizes can be generated when using a common primary optics.
  • the lighting means have a first lighting means, which occupies a first closed, preferably essentially circular, area, and second lighting means, which surround the first lighting means.
  • the first illuminant emits light over a closed, preferably essentially circular area, which is imaged by the primary optics into an individual light spot which has a closed, essentially circular shape with a first size.
  • the second light sources which surround the first light source and are preferably of essentially ring-shaped design, individual light spots can be generated which surround the individual light spot that can be generated with the first light source.
  • the lighting arrangement has at least one diffuser element.
  • the diffuser element is preferably arranged between the at least one primary optics and the illumination surface.
  • a diffuser is arranged between a light source and the illuminated surface, the individual light spot generated by the light source is softened on the illuminated surface. This means that the light distribution defined by the illuminant and the associated primary optics is broadened by the diffuser element. This leads to a softer intensity transition of the light distribution, particularly at the edges of the generated individual light spots. As a result, individual light spots of different sizes can be generated, which have a widened, diffuse overlap in the edge areas of the individual light spots. The use of diffuser elements thus makes it easier to continuously adjust the size of the light spot.
  • a diffuser element is to be understood as meaning an optical element that causes the transmitted light to be scattered.
  • transparent elements with a roughened surface such as diffusers or conventional optical diffusers can be used as the diffuser element.
  • the lighting means are formed by LEDs, preferably LED matrices and/or LED clusters, preferably with a warm white and/or cold white color temperature. Lamps of this type require little space. In addition, activation via a control unit for adjusting the brightness of the lamps can be easily implemented.
  • the lighting means can each be formed by individual LEDs. Alternatively, a light source can have a multiplicity of LEDs, which are provided in the form of an LED matrix or an LED cluster. Furthermore, in order to be able to achieve a desired color temperature, LEDs with a warm white or cold white color temperature, or any combination of such LEDs, can be used. Alternatively or additionally, colored LEDs can be used.
  • the at least one primary optic has at least one lens and/or at least one reflector and/or at least one free-form optic.
  • a suitable radiation characteristic of each light source can be set to generate individual light spots of different sizes on the lighting surface.
  • the lighting means are arranged on a common carrier element. If LEDs (in the form of individual LEDs and/or matrices or clusters) are used as illuminants, the LEDs can be arranged on a common circuit board, or separate circuit boards can be provided for each illuminant, which are arranged on a common carrier element. As a result, the installation space of the lighting arrangement can be further reduced and the design effort can be reduced.
  • the carrier element can be formed from a material with high thermal conductivity and can thus serve as a heat sink for the lighting means.
  • the lighting arrangement has at least one housing in which at least one of the lighting means or all lighting means is/are accommodated.
  • the housing is preferably pivotable.
  • the installation space required for the lighting arrangement can be reduced by the integration of light sources in a common housing.
  • the location at which the light spot with an adjustable size can be generated on the illuminated surface can be varied by a pivotable design of the housing.
  • the object of the invention is also achieved by a method for adjusting, preferably steplessly adjusting, a spot size of a light spot on an illuminated surface, preferably using an illumination arrangement according to one of the preceding claims.
  • the procedure has the following steps:
  • Light spots with set spot size With the method according to the invention, the same advantages can be achieved as have already been described in connection with the lighting device according to the invention. It should be pointed out that the features described within the scope of the lighting device according to the invention apply to the method according to the invention for adjusting the spot size of the light spot.
  • Features of the lighting device in particular those relating to setting the size of the light spot, can be transferred to the method according to the invention.
  • features of the method according to the invention can be transferred to the detection device according to the invention by configuring the lighting device in such a way that it is suitable for executing the corresponding method features.
  • Fig. 1 is a schematic perspective view of a
  • Lighting arrangement according to an embodiment of the invention, which illuminates a lighting area with a spot of adjustable size
  • Figures 2a and 2b show schematic views of a lighting arrangement for use in the lighting arrangement of Figure 1;
  • FIGS. 3a and 3b show schematic representations of light source arrangements for use in the lighting arrangement from FIG. 1;
  • FIG. 4a shows a schematic view of an illumination area to explain the adjustable spot size with an illumination arrangement according to FIG. 1;
  • FIG. 4b shows a graph that schematically shows a possible control logic for adjusting the spot size according to FIG. 4a;
  • Fig. 5 is a schematic perspective view of a
  • Lighting arrangement according to a further exemplary embodiment of the invention, which illuminates a lighting area with a spot of adjustable size;
  • FIG. 6a and 6b schematic representations of illuminant arrangements for
  • Fig. 7a is a schematic view of an illumination area for
  • FIG. 7b shows a graph that schematically shows a possible control logic for setting the spot size according to FIG. 7a.
  • FIG. 1 shows a lighting arrangement according to a first exemplary embodiment of the invention, with which a light spot with an adjustable spot size can be generated on a lighting area B.
  • FIG. The lighting arrangement has three light sources 1 , 2 , 3 .
  • the lamps 1, 2, 3 can be controlled independently of one another by means of a control unit 40 in such a way that they can be operated independently of one another with adjustable brightness or light intensity.
  • each light source 1, 2, 3 is assigned a primary optics 11, 12, 13, which is arranged on the associated light source 1, 2, 3 in each case.
  • the primary optics 11, 12, 13 modify the light distribution of the light emitted by the light sources 1, 2, 3 light.
  • the primary optics 11, 12, 13 are through lenses formed with different focal lengths, which collimate the light emitted by the lamps 1, 2, 3 to different extents.
  • the primary optics 11, 12, 13 are arranged in such a way that the individual light spots Si, S2, S3 that can be generated with the light sources 1, 2, 3 are arranged essentially concentrically to one another.
  • the individual light spots Si, S2, S3 are not sharply delimited, as indicated schematically in FIG. Rather, the individual light spots Si, S2, S3 can have a diffuse brightness profile at the edges, in which the brightness on the illuminated area B decreases from the inside to the outside.
  • the delimitation of the individual light spots Si, S2, S3 shown in FIG. 1 is to be understood as an area within which the brightness or luminosity of the respective individual light spots Si, S2, S3 is a predetermined fraction of the maximum spot brightness or luminosity exceeds.
  • the individual light spots Si, S2, S3 have a diffuse brightness distribution at the edges.
  • diffuser elements can be provided on the lighting arrangement, which scatter the light distribution generated by the lighting means 1, 2, 3 and modified by means of the primary optics 11, 12, 13.
  • 2a shows a detailed view of an illumination arrangement according to an exemplary embodiment of the invention, which has a diffuser element 20 which is arranged between the primary optics 11, 12, 13 and the illumination surface B (not shown).
  • the light sources 1, 2, 3 have LED clusters, each of which is arranged on a circuit board.
  • the light sources 1 , 2 , 3 are arranged on a common support plate 50 .
  • each lamp 1, 2, 3 is assigned a primary optics 11, 12, 13 in the form of a lens with a different focal length, so that the emission characteristics of the individual lamps 1, 2, 3 have different emission angles ai, 012 , as, as described with reference to FIG.
  • the light patterns emitted by the lamps 1, 2, 3 are scattered by the diffuser element 20 (which can be formed, for example, by a diffusing disk), in order to project individual light spots Si, S2, S3 with a diffuse brightness profile into the illuminated area B To be able to create border areas.
  • the primary optics 11, 12, 13 are aligned accordingly, as shown schematically in FIG. 2a.
  • FIG. 2b shows an alternative embodiment of the lighting arrangement shown in FIG. 2a, in which each light source 1, 2, 3 is assigned a separate diffuser element 21, 22, 23.
  • the lighting means 1, 2, 3 are arranged next to one another on a common carrier plate 50.
  • 3a and 3b show two possible variants with which such an arrangement of the lighting means can be implemented.
  • FIG. 3a shows a support plate 50 which is preferably formed from a material with high thermal conductivity.
  • On the support plate 50 three light sources 1, 2, 3 are arranged. Each light source 1, 2, 3 has an LED cluster that is arranged on a circuit board.
  • a support plate 50 is shown, which is designed as a circuit board. Three groups of LEDs are arranged on the carrier plate 50, each of which forms a light source 1, 2, 3.
  • the lighting arrangement according to the exemplary embodiments described above preferably has a housing (not shown) in which the illuminants 1, 2, 3 and primary optics 11, 21, 31 and possibly the diffuser elements 20, 21, 22, 23 are accommodated.
  • FIG. 4a schematically illustrates the individual light spots Si, S2, S3, which can be generated on the illuminated area B with the illumination arrangement according to the above description.
  • the upper part of FIG. 4a shows the illumination area B with the individual light spots Si, S2, S3.
  • the brightness distribution of the individual light spots along the line marked x is shown in the diagram below (the selected unit L represents the brightness of the spots on the illuminated area B in a dimensionless unit, with all brightness profiles normalized to the same maximum value are). It can be seen that all the individual light spots Si, S2, S3 have a diffuse brightness profile at the edges, in which the brightness gradually decreases towards the outside.
  • a predetermined fraction of the maximum spot brightness can be defined, which is denoted by Lo in FIG. 4a.
  • the diameter of the area in which the individual light spots have a brightness above Lo can be defined as a measure of the spot size.
  • the individual light spots Si, S2, S3 can be superimposed on the illumination area B to form a light spot with an adjustable size. For example, if only the first light source 1 is activated, a light spot results on the illuminated area, the size of which corresponds to the individual light spot Si. If this individual light spot Si is superimposed with the individual light spot S2 that can be generated with the second light source 2, the size of the light spot increases with increasing emission intensity of the second light source 2 to the size of the individual light spot S2. In order to further increase the size of the light spot, the third light source 3 can be controlled and the size of the light spot can be increased up to the size of the third individual light spot S3.
  • the x-axis represents the adjustable size of the light spot
  • the intensities h, h, I3 of the lamps 1, 2, 3 are shown on the y-axis, at which the control unit 40 can control the lamps 1, 2, 3 in order to set the desired size of the light spot.
  • a light spot of size Si results on the illuminated area.
  • the intensity h of the second light source is gradually increased. If an approximately constant brightness of the light spot is to be maintained with increasing size, the intensity I i can be reduced when the intensity h of the second illuminant 2 is increased, as shown in FIG. 4b.
  • the first individual light spot Si and the second individual light spot S2 are faded into one another, while the size of the light spot resulting from the superimposition of the individual light spots increases continuously.
  • the second light source 2 and the third light source 3 can be blended into one another accordingly.
  • the lighting arrangement according to the invention is not limited to such an arrangement of the lighting means 1, 2, 3.
  • the arrangement of the lamps 1, 2, 3 relative to one another does not have to be linear.
  • the lamps 1, 2, 3 can also be arranged, for example, on an imaginary circle.
  • the lighting arrangement according to the invention is not limited to the use of three light sources 1, 2, 3. Two lamps or more than three lamps can also be used.
  • the lighting arrangement has a control unit 40 which is designed to control the lighting means 1, 2, 3 separately from one another in order to be able to generate individual light spots with different diameters on the lighting surface B.
  • the light patterns that can be generated with the lamps 1, 2, 3 are shown with different dashed lines, as are the individual light spots Si, S2, S3 that can be generated on the illuminated surface.
  • the lighting arrangement in FIG. 4 has only one primary optics 10 which is shared by all the lighting means 1, 2, 3.
  • the lamps 1, 2, 3 are formed in the embodiment shown in FIG. 4 such that the first Bulb 1 is surrounded by the second and third bulbs 2 and 3, as shown in more detail in Figs. 5a and 5b.
  • FIG. 6a schematically shows a lamp arrangement for use in the lighting arrangement according to FIG. 4.
  • the lamp arrangement has three lamps 1, 2, 3 which are arranged on a carrier plate 50 and which have an essentially concentric arrangement.
  • the first light source 1 is arranged in a central area of the light source arrangement.
  • the second light source 2 is designed in such a way that it surrounds the first light source 2 .
  • the third light source 3 surrounds the second light source 3.
  • the individual light sources 1, 2, 3 can be formed by OLEDs, for example.
  • FIG. 6b shows a schematic of a further lighting arrangement for use in the lighting arrangement according to FIG.
  • the lamps 1, 2, 3 are formed by different groups of LEDs.
  • the first light source 1 is formed in FIG. 1 by LEDs, which are arranged in a central area of the LED matrix and are shown with a first hatching.
  • the second light source 2 is formed by a group of LEDs that adjoin and surround the LEDs of the first light source 1 .
  • the third light source 3 includes LEDs that surround the second light source 2 and are shown with a second hatching.
  • the LEDs are configured in such a way that the groups of LEDs that form the different light sources 1, 2, 3 can be controlled separately from one another.
  • a diffuser element 20 can also be arranged in front of the primary optics 10 in the lighting arrangement according to FIGS .
  • FIG. 7a The brightness distribution of the individual light spots Si, S2, S3, which can be generated with an illumination arrangement according to FIGS. 5 to 6b, is shown schematically in FIG. 7a.
  • the upper part of FIG. 7a shows the illumination surface B with the individual light spots Si, S2, S3 that can be generated thereon, whose brightness distribution is shown along the line labeled x in the diagram below.
  • Fig. 4a due to the concentric arrangement of the light sources 1, 2, 3, for all individual light spots except for the inner individual light spot Si, there are essentially ring-shaped brightness profiles on the illumination surface B, in which a central area of the individual light spots has a lower brightness.
  • the adjustable brightness distributions of the individual light spots overlap at the edges of the individual light spots, so that by suitably controlling the lamps 1, 2, 3, an almost infinitely variable adjustment of the size of the light spot is made possible by superimposing the individual light spots.
  • the corresponding control of the lighting means 1, 2, 3 for setting the size of the light spot is shown schematically in FIG. 7b.
  • the brightness distributions of the individual light spots (apart from the individual light spot Si that can be generated with the first illuminant 1) have a minimum in a central area. It is therefore preferred in the present exemplary embodiment not to reduce the intensity of the lighting means with a smaller individual light spot when setting light spots of increasing size. Instead, in order to adjust light spots with increasing size, the control unit 40 successively switches on lamps that are located further out and their intensity is gradually increased in order to be able to continuously further increase the size of the light spot.

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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 d'éclairage destiné à produire une tache de lumière de taille réglable, de préférence réglable en continu, sur une surface à éclairer B, lequel système d'éclairage comprend les éléments suivants : une pluralité de sources lumineuses (1, 2, 3) à luminosité réglable ou intensité variable, au moins une optique primaire (10 ; 11, 12, 13), et une unité de commande (40) qui est conçue pour commander les sources lumineuses (1, 2, 3) indépendamment les unes des autres. Les sources lumineuses (1, 2, 3) et ladite au moins une optique primaire (10 ; 11, 12, 13) sont disposées de telle manière que des taches de lumière individuelles (S1, S2, S3) sensiblement concentriques et de tailles différentes peuvent être produites sur la surface à éclairer B. L'unité de commande (40) est conçue pour commander les sources lumineuses (1, 2, 3) de telle manière que les taches de lumière individuelles (S1, S2, S3) produites peuvent être superposés sur la surface à éclairer B pour former une tache de lumière de taille réglable. L'invention concerne en outre un procédé pour régler, de préférence régler en continu, une taille d'une tache de lumière sur une surface à éclairer B.
EP21819382.9A 2020-11-23 2021-11-22 Système d'éclairage et procédé pour produire une tache de lumière de taille réglable Pending EP4248129A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020130950.3A DE102020130950A1 (de) 2020-11-23 2020-11-23 Beleuchtungsanordnung und Verfahren zur Erzeugung eines Lichtspots mit einstellbarer Spotgröße
PCT/EP2021/082458 WO2022106677A1 (fr) 2020-11-23 2021-11-22 Système d'éclairage et procédé pour produire une tache de lumière de taille réglable

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EP4248129A1 true EP4248129A1 (fr) 2023-09-27

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DE (1) DE102020130950A1 (fr)
WO (1) WO2022106677A1 (fr)

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