EP4001748A1 - Émetteur, ainsi que luminaire doté d'une pluralité de tels émetteurs - Google Patents

Émetteur, ainsi que luminaire doté d'une pluralité de tels émetteurs Download PDF

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Publication number
EP4001748A1
EP4001748A1 EP21209363.7A EP21209363A EP4001748A1 EP 4001748 A1 EP4001748 A1 EP 4001748A1 EP 21209363 A EP21209363 A EP 21209363A EP 4001748 A1 EP4001748 A1 EP 4001748A1
Authority
EP
European Patent Office
Prior art keywords
light
optical element
light source
main
rays
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
EP21209363.7A
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German (de)
English (en)
Inventor
Christian Anselm
Christian Reisecker
Georg Spielberger
Peter Tanler
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.)
Bartenbach Holding GmbH
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Bartenbach Holding 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 Bartenbach Holding GmbH filed Critical Bartenbach Holding GmbH
Publication of EP4001748A1 publication Critical patent/EP4001748A1/fr
Pending legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/20—Lighting for medical use
    • F21W2131/205—Lighting for medical use for operating theatres
    • 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
    • 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 generally relates to lights that use a large number of spotlights to generate a luminous field that can be adjusted in terms of its field width and/or its focus and, if necessary, also in terms of its color temperature. Such lights are used, for example, as surgical lights.
  • the invention also relates to the individual emitters of such a lamp, with such an emitter having a matrix-like light source arrangement, an optical element for shaping the light emitted by the light source arrangement into a beam of rays, and an adjustment device for adjusting the widening and/or focusing of the beam of rays.
  • Lights such as surgical lights, often include an array of emitters, each emitting a bundle of rays, which together produce a luminous field that illuminates a specific target area, such as a wound in a patient on an operating table, in the manner of a column of light.
  • a specific target area such as a wound in a patient on an operating table
  • such surgical lights or similar lights illuminate very small fields with very high illuminance levels of the order of 1 to 2 times the illuminance of the sun, with, for example Fields of 10 to 40 cm or 15 to 30 cm in size can be illuminated at a distance of about 1 m.
  • the width or diameter of the illuminated field can be adjusted or if the focus can be changed in order to have a certain field width at a certain distance from the lamp.
  • the light color or color temperature in the light field can also be changed in order to achieve the desired illumination or to be able to adapt the illumination to different boundary conditions.
  • Such lights are known from practice, for example under the product name marLED X ® from the company KLS Martin or under the product name TruLight 5000 ® from the company Trumpf Medical, a surgical light is known which can be switched with regard to the color temperature generated in the light field and whose light field with regard to of the diameter can be gradually adjusted.
  • the spotlights combined in a plate-shaped or plate-shaped luminaire body each comprise LEDs as light sources, the emitted light of which is formed into bundles of rays by means of optical elements, which together produce the luminous field of the luminaire.
  • such lights regularly have two or more types of spotlight groups, which are switched on and off alternatively or switched on in combination depending on the desired diameter of the illuminated field.
  • the individual radiators themselves have a fixed expansion or a fixed zoom factor.
  • the narrow beam radiators are switched on to generate a narrower column of light, while the broader beaming or defocused radiators are switched on or possibly also switched on to generate a wider column of light.
  • more than two groups of radiators can also be provided in order to be able to adjust the field width in more than two stages, with the radiators being switched on and off in the digital sense or alternatively also being dimmed to different levels of brightness so that, for example, a wide lens can be driven to 10% of the maximum brightness and a narrow lens to 90% of the maximum brightness to achieve a narrow column of light.
  • this ability to switch between different groups of radiators or their ability to be dimmed to different brightness levels means that there are always black or non-illuminated or hardly illuminated sections in the luminaire, namely always there where a corresponding radiator is currently switched off because the beam of rays it generates does not fit in terms of expansion.
  • This has various disadvantages. For example, multi-shadows occur when, for example, an operator's hand reaches into the light column.
  • a large number of radiators or components is required, which is doubled or tripled, so to speak, if the field width is to be adjustable in two or three stages.
  • the light source can, so to speak, be adjusted relative to the main axis of the optical element, as a result of which the bundle of rays emitted by the optical element is shaped differently. It should be noted, however, that this is not about imaging optics, for example in the sense of a beamer or a slide projector, but about the bright illumination of a specific target area with very high illuminance levels in the most uniform way possible. As mentioned at the outset, a wound on a patient who is on an operating table, for example, should be illuminated very brightly and without shadows, and the beam of rays should be adapted to the size and position of the target area.
  • the present invention is therefore based on the object of providing an improved lamp of the type mentioned and an improved radiator for such a lamp To create light, avoid the disadvantages of the prior art and develop the latter in an advantageous manner.
  • a simple adjustability with regard to the alignment of the illuminated field generated in the target area should be achieved without having to buy this through lighting impairments such as multiple or colored shadows or requiring expensive, sensitive adjustment mimics and a large number of components for this.
  • radiators according to claim 1 and a luminaire with a plurality of such radiators according to claim 15.
  • Preferred developments of the invention are the subject matter of the dependent claims.
  • the optical element for shaping the light received from the light source matrix is designed to reflect all of the received light the same number of times when it is shaped into a bundle of rays, with the number of reflection processes R of each received light beam on the optical element satisfying the relationship 0 ⁇ R ⁇ n and n is a natural number ⁇ 10, wherein the adjusting device has an operating mode for adjusting the direction of emission and/or main axis of the beam of rays, in which, in order to tilt the direction of emission and/or main axis of the beam of rays, different subgroups of the light sources are controlled which are asymmetrical to different extents with respect to the optical main axis of the optical element are arranged offset.
  • This approach to adjusting the light field is based on the consideration that the bundle of rays emitted by an optical element shifts, depending on where the light, which the optical element then transforms, strikes the optical element. Depending on which position a light source assumes relative to the main optical axis of the optical element, the optical element emits the light received from the light source in different directions or with different main axes and possibly also different expansions.
  • the optical element If, by skilfully switching on and off or dimming up and down light sources or groups of light sources arranged asymmetrically to different degrees, light that is offset to different degrees transversely from its main optical axis is applied to the optical element, the optical element emits a differently aligned or tilted beam.
  • Such an electronic adjustment of the widening and/or focusing of the beam of rays at the level of the radiator itself not only makes it possible to dispense with expensive and complex mechanical adjustment devices, but also avoids undesirable lighting disadvantages such as multiple shadows, as are the case with luminaire fields with two types of radiators the light field adjustment occur, or color shadows, as they occur in light fields with two different colored radiator groups. At the same time, the required number of parts can be drastically reduced.
  • the equal number of reflection processes on the optical element allows the main emission direction of the generated beam to be tilted cleanly, without having the counter-effects that occur in previous radiators with electronic zoom.
  • part of the light beams is regularly emitted unreflected at the optical element that forms the beam bundle, while another part of the light beams is reflected once.
  • the LED matrix Laterally emitted light beams are reflected on the reflector wall and thus reflected once into the bundle of rays emitted by the reflector, while the central part of the light emitted by the LED_Matrix passes unreflected through the center of the reflector into the bundle of rays emitted overall.
  • the entire light received by the optical element means in this respect the entire light impinging on the optical element and/or passing through the optical element, which forms the shaped beam of rays of the radiator downstream of the optical element.
  • the number of reflection processes that is the same for all light beams can be different.
  • a lens working with total reflection can be designed to deflect all received light rays twice by total reflection or, if necessary, by reflection when a reflective coating is provided, it being possible for the light rays to be deflected two more times by refraction when entering and exiting the lens. each ray of light is deflected four times, twice by reflection and twice by refraction.
  • a reflector is used as the optical element, all light beams can be deflected exactly once, with the light source matrix and the reflector being arranged in such a way that no unreflected light beams emerge from the reflector and/or the light emitted by the light source arrangement is essentially completely directed onto the reflector falls.
  • a lens can also be used as the optical element, which provides no deflections at all by reflection for all received light beams, so that in this case the number of reflections mentioned is zero.
  • Such a lens deflects the received light rays only by refraction at the entrance and exit surfaces. This also makes it possible to avoid the described compensation effect with regard to the deflection caused by reflection that takes place at different times.
  • the matrix-like light source arrangement can comprise at least one light source or group which is arranged symmetrically and/or coaxially with respect to the main optical axis of the optical element emitting the beam of rays, and at least one further light source or group which is arranged with respect to the said main optical axis of the
  • the optical element is arranged asymmetrically or transversely offset thereto, with the symmetrically arranged and asymmetrically arranged light sources or groups mentioned being individually controllable, so that depending on the operating mode of the control device for setting the widening and/or focusing of the beam of rays, only one of the two light sources or Groups and at other times both light sources or groups radiate, so that the light bundles formed from this by the optical element complement each other or do not complement each other, in order to produce a beam that is expanded to different extents or focused differently to generate bundles.
  • the matrix-like light source arrangement can also have three or more light sources or groups that can be controlled individually and are transversely offset to different extents or are arranged asymmetrically to different degrees with respect to the main optical axis of the optical element, so that different Combination of the light sources or groups of light sources mentioned, widenings of different magnitudes or different focussing of the beam of rays generated as a whole can be achieved.
  • control device mentioned for controlling the light sources individually and/or in groups can be designed to broaden the beam of rays and/or to bring the focal plane of the beam closer together in a cascade-like manner to switch on light sources or groups that are increasingly transversely offset and/or that are increasingly asymmetrically arranged, so that the light beam generated by all of the illuminating light sources together, which is applied to the optical element and transformed by the latter into a beam, is positioned more and more asymmetrically to the main optical axis of the optical element or more and more transversely offset from it.
  • the transverse offset of the light beam generated by the light sources as a whole in relation to the main optical axis of the optical element increases more and more, so that the optical element generates an ever wider or increasingly tilted beam.
  • the matrix-like light source arrangement can be arranged overall asymmetrically to the main optical axis of the optical element, with advantageously part of the light source arrangement, i.e. a light source or a light source group, being arranged symmetrically and/or coaxially to the main optical axis of the optical element.
  • the main optical axis of the optical element can pass through the matrix-like light source arrangement, but advantageously not in the middle, but through a section that is offset from the center of the light source arrangement. In this way, efficient utilization of the light source arrangement can be achieved or maximum adjustment of the widening or focusing or tilting of the beam of rays can be achieved with a minimum number of light sources.
  • the matrix-like light source arrangement symmetrically to the main optical axis of the optical element and to carry out the desired adjustment of the widening of the beam of rays by symmetrically controlling the light sources or light source groups.
  • the widening of the bundle of rays can be controlled by switching on and off or dimming light sources or subgroups at different distances from the main axis, which are arranged symmetrically to the main axis on different sides of the main axis of the optical element.
  • a relatively narrow bundle of rays can be generated in that only one light source or group of light sources arranged in the area of the main axis radiates, while light sources that are further away from the main axis are switched off or dimmed down.
  • these additional light sources or groups which are arranged further away from the main axis and can be positioned, for example, to the right and left of the central light source group, can be switched on or dimmed up, so that the emitted light beam is broadened.
  • Such an adjustment or change in the cross-sectional contour of the light column can in particular also take place at the level of the entire luminaire.
  • the luminaire has a matrix-like field of radiators
  • the radiators positioned along an axis of the matrix-like arrangement can be changed in their activation, while the radiators lined up in a transverse direction thereto experience no change in the activation.
  • the emitters along a main axis of the emitter field are widened in their beam bundles by dimming up or switching on the light sources or groups of these emitters or tilted relative to the main axis of the optics, specifically the emitters further away from the center, while there is no change in a transverse direction the control takes place, the cross section of the light column generated jointly by the emitters can be stretched or, conversely, compressed, or the beam bundle can be tilted relative to the main axis of the optics.
  • the light source arrangement can have a rectangular contour overall, with the light source arrangement advantageously being able to be arranged off-centre in the direction of the longer main axis of the rectangle with respect to the main optical axis of the optical element.
  • the light source field defined by the light sources can define an enveloping contour which is rectangular in the manner mentioned or forms at least approximately a rectangle.
  • the light source arrangement can be positioned overall asymmetrically or else symmetrically with respect to the main optical axis.
  • the widening of the bundle of rays or its focusing or its tilting can be carried out by driving the light sources or light source groups of the light source arrangement to different extents asymmetrically or symmetrically.
  • the focussing of the beam of rays can advantageously be set or adjusted automatically.
  • distance detection can be provided, which detects the distance between the target area to be illuminated and the optical element, with the said control device driving the light source arrangement more or less asymmetrically depending on the detected distance in order to generate the desired illuminated field in the target area.
  • the light can have a distance sensor to detect the target area such as the height of an operating table.
  • the control device then controls the light source arrangement depending on the detected distance in such a way that the illuminated field in the target area has the desired width or the desired diameter or the desired (e.g. circular, elliptical or oval) cross-sectional contour or the focal plane of the generated light column in the target area lies.
  • the distance detection device can work cyclically or continuously, for example when the height of the operating table is adjusted or the distance between the target area and the radiator changes due to other circumstances, so that the focal plane can be automatically readjusted by the control device making the light source arrangement more or less asymmetrical drives.
  • mixed optics can be provided between the matrix-like light source arrangement and the optical element that forms the beam of rays. which mixes the light emitted by the light sources of the light source arrangement before the light strikes said optical element.
  • Such a mixed optics upstream of the optics element can, in particular be advantageous if the light source arrangement comprises light sources of different colors.
  • the said mixing optics can in principle be designed differently, with a segmented mixing rod advantageously being provided, the segments of which can each be assigned to an individually switchable light source or group of the matrix-like light source arrangement.
  • a mixing rod bundle can be used as the mixing optics, the individual mixing rod elements of which adjoin one another on the peripheral side.
  • the mixing optics mentioned can advantageously be arranged asymmetrically or transversely offset overall with respect to the main optical axis of the optics element.
  • the mixing optics can be arranged coaxially or symmetrically to the matrix-like light source arrangement. If the light source arrangement is arranged overall asymmetrically to the main optical axis of the optical element, the mixing optics can also be arranged asymmetrically or transversely offset in a corresponding manner.
  • mixing optics in particular a segmented mixing rod for mixing different colored light
  • the light color can be set in the desired color at the same time as the main emission direction is tilted, for example by switching light sources of different colors assigned to an individual rod segment on and off or dimming them up or down.
  • the lamp 1 can comprise a field of radiators 2, which can be arranged at least approximately in one plane or along a harmoniously contoured surface.
  • the radiators 2 mentioned can be arranged on a plate or plate-shaped lamp body 3, which can be accommodated in a housing or form part of a housing.
  • the lamp 1 can be designed as an operating room lamp, which can be mounted on a support arm in a position-adjustable manner in order to be able to position the lamp 1 with a precise fit in a position above the target area to be illuminated. In principle, however, other applications or suspension and assembly options are also possible.
  • the radiators 2 can advantageously be arranged next to one another and/or distributed uniformly, it being possible for more than five or more than ten or more than twenty radiators 2 to be combined to form the luminaire 1, for example.
  • the radiators 2 can be configured essentially identically to one another. Irrespective of this, the spotlights 2 can all light up or radiate during operation, preferably regardless of the diameter or width of the luminous field generated jointly by the spotlights 2 and regardless of how the widening and/or focusing of the Spotlights 2 jointly generated light column is set.
  • each of the radiators 2 can comprise a matrix-like light source arrangement 4, which can be embodied in the form of an LED cluster, for example.
  • the light source arrangement 4 comprises a multiplicity of preferably punctiform light sources which can be controlled individually and/or in groups and which are arranged uniformly distributed in a field, for example can be arranged on a supply circuit board.
  • the light source arrangement 4 can comprise more than two or more than four or more than six or, as in the case shown, 8 or more than ten or even more than fifteen or more than twenty light sources, which are preferably evenly distributed next to one another in several pure columns.
  • the light source arrangement 4 can have an overall rectangular or square or also polygonal or polygonal, such as hexagonal, or also round or rounded such as oval or elliptical envelope contour, the envelope contour mentioned meaning the outline contour of the light source field.
  • the light sources of the light source arrangement 4 are advantageously distributed in a common plane.
  • the radiator 2 also has how 2 shows an optical element 5, which can advantageously be designed in the form of a lens or in the form of a reflector or in the form of a mixed form of lens and reflector, in order to shape the light received from the light source arrangement 4 into a bundle of rays 6, which is emitted by the optical element 5 and thus by the radiator 2 in order to illuminate the respective target area.
  • the emitters 2 of the lamp 1 can jointly illuminate a common target area, such as an operating table, and for this purpose emit a light column in which the beams 6 of the emitters 2 complement and/or overlap.
  • Said optical element 5 is designed such that all light beams captured by optical element 5 are reflected the same number of times, with the number of reflection processes R preferably satisfying the relationship 0 ⁇ R ⁇ n, where n is a natural number and preferably ⁇ 10.
  • the number of reflection processes R can be less than or equal to 1 and/or less than 8 or less than 5 or less than 3 independently of this.
  • the optical element 5 can be designed, for example, in the form of a disc-shaped or flat, plate-like lens which has a light entry surface 7 which can be provided on a flat side of the lens and can be contoured concavely or in the form of a cup-shaped recess.
  • the lens can be reflective or totally reflective on a side opposite the light entry surface, so that no non-reflected portion of light can escape from the lens.
  • a beam coming from the light source arrangement 4 can be deflected at the light entry surface 7 by refraction and then reflected back on the opposite flat side of the lens by total reflection in order to be thrown onto the ring-shaped lens surface that surrounds the light entry surface 7.
  • the beam path 8 can be deflected again at said ring surface 9, for example by a reflective coating that can be applied to the lens, or, depending on the lens contour, by total reflection, in order to be directed to the light exit surface 10, which is ring-shaped on one flat side, for example the lens can be provided.
  • At least one of the surfaces of the optical element 5, on which the beam path 8 is deflected can be faceted, in particular provided with micro-facets, in order to make it more uniform and by mixing the light captured by the optical element 5.
  • the ring-shaped deflection surface 9, which directs the internal beam path 8 to the light exit surface can be designed with such faceting, cf. 7 .
  • each light beam 8 can be reflected twice on the emission-side end surface of the lens and on the opposite ring surface 9 .
  • a differently contoured lens can also be used as the optical element 5, for example a teardrop-shaped lens, as shown in 8 is shown.
  • a lens can have a light entry surface 7 facing the light source arrangement 4, for example with a slightly concave contour, and have a light exit surface 10 opposite or facing away from the light entry surface 7, which can be significantly more curved than the light entry surface and/or bulbous or convex.
  • the lens can be designed to emit all received light beams without reflection, so that the beam paths are only deflected by refraction at the lens entry and exit surfaces.
  • a reflector can also be provided as the optical element 5, which can be curved, for example, in the shape of a shell or shell or else in the shape of a double shell or double shell.
  • the arrangement with such a reflector can be such that the light source arrangement 4 itself radiates in the wrong direction, i.e. the light radiates in the opposite direction to the bundle of rays 6 to be radiated into the reflector, which then throws back the received light and in the form of the desired one Beam of rays 6 emits.
  • the reflector is designed in particular to reflect all light beams once, so that no unreflected beams emerge from the reflector.
  • the matrix-like light source arrangement 4 is advantageously arranged asymmetrically with respect to the main optical axis 11 of the optical element 5 .
  • Said main optical axis 11 of the optical element 5 can indeed pass through the light source field or the light source arrangement 4, but not through the center of the light source arrangement 4, but rather through a section that is eccentrically offset thereto. If an overall approximately rectangular light source arrangement 4 is provided, the light source arrangement 4 can be offset in the direction of the longer main axis of the rectangle.
  • the light source arrangement 4 can be positioned relative to the main optical axis 11 of the optical element 5 in such a way that one light source or group is positioned symmetrically to the main optical axis 11 and at least one other light source or group is positioned asymmetrically or transversely offset to the main optical axis 11.
  • at least one light source or group is arranged symmetrically and at least two other light sources or groups are eccentrically offset to the main axis 11, the two at least two other light sources or groups mentioned advantageously being offset transversely to the main axis 11 by different amounts.
  • a row of light sources 0 can be arranged symmetrically to the main optical axis 11
  • a further row of light sources 1 can be arranged adjacent to row of light sources 0 but offset from the main axis 11
  • a further row of light sources 2 can be arranged adjacent to the aforementioned row of light sources 1 and further offset transversely from the main axis 11.
  • An additional row of light sources -1 can in turn be arranged adjacent to the symmetrical row of light sources 0, but offset transversely to the opposite side, cf. 2 .
  • the symmetrically and asymmetrically or differently asymmetrically arranged light sources or groups of the light source arrangement 4 can advantageously be controlled individually or in groups by a control device 12, in particular can be switched on and off and/or dimmed.
  • Said control device 12 can have an electronic controller, for example comprising a processor control unit, and be part of a setting device 13 or be connected to such a setting device 13 which is used for variable Adjustment of the widening and / or focusing of the beam 6 is provided.
  • Said adjustment device 13 can have input means for entering or preselecting a desired widening and/or focusing, for example in the form of an adjustment button, an adjustment knob or a touchscreen or in the form of other input means.
  • the setting device 13 can also be designed to work automatically or have an automatic mode in order to set the widening and/or focusing of the beam of rays 6 automatically in the form of an operating and/or environmental parameter.
  • the lamp 1 can include a distance sensor 14 which has the distance of the lamp 1 and/or a radiator 2 from the target area to be illuminated, with the control device 12 controlling the light sources of the light source arrangement 4 depending on the detected distance.
  • the bundle of rays 6 of the radiator 2 widens or narrows, depending on which light sources or groups are controlled. For example, if only the symmetrically arranged row of light sources 0 is switched on, cf. 3 , a narrow beam 6 is generated.
  • the adjacent light source row 1 which is asymmetrical to the main axis 11, is switched on, a wider beam 6 is generated, since the part of the beam coming from the asymmetrical light sources is emitted by the optical element 5 in a more strongly deflected manner, cf. 4 .
  • the additional line L in 4 also the option of generating a broadened beam of rays by symmetrically switching on light sources that are further away.
  • the additional line L illustrates the broadened part of the beam that is obtained when the LED assembly -1 is switched on or dimmed up, so that in this case the light source groups -1, 0 and 1 radiate with comparable intensity.
  • the broadening of the beam of rays can therefore be generated not only by supplementing or superimposing asymmetrically switched on or dimmed up light sources, but also by switching on or dimming up light sources or groups that are spaced further and further from the main axis but are arranged symmetrically with respect to the main axis.
  • the focal plane of the beam 6 can also be changed or different widths or diameters of the beam 6 can be set in different focal planes, depending on which of the light sources of the light source arrangement 4 are operated.
  • Figure 6a shows the beam portions that can be generated by the individual light sources or rows of light sources
  • the partial views 6b, 6c and 6d show the beams 6 that can be generated by different combinations of the beam portions
  • partial view b again showing the field widths or beam diameters that can be generated in a focal plane at a distance of, for example, 1 m
  • partial view c shows the field widths or beam diameters that can be generated in a focal plane at a distance of, for example, 0.7 m
  • partial view d shows different field widths or beam diameters in a focal plane at a distance of, for example, 1.5 m from the optical element 5 of the radiator 2.
  • mixing optics 15 are advantageously provided between the light source arrangement 4 and the optics element 5, which can advantageously be designed in the manner of an elongate mixing rod in order to mix the light coming from the light source arrangement 4 even before it strikes the optics element 5.
  • said mixing optics 5 can be designed in the form of a segmented mixing rod, the rod segments of which form a bundle of rods and adjoin one another over a large area on the circumferential side.
  • the individual mixing rod segments 16 can be assigned to a respective light source or group, which can be individually controlled or switched on and off in order to mix the light of the respective light source or group.
  • the light source groups that can be switched on and/or arranged asymmetrically to different extents can comprise light sources of different light colors, so that the differently colored light is mixed in the mixing optics 15, in particular in the respective mixing rod segment 16.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP21209363.7A 2020-11-20 2021-11-19 Émetteur, ainsi que luminaire doté d'une pluralité de tels émetteurs Pending EP4001748A1 (fr)

Applications Claiming Priority (1)

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DE102020130685.7A DE102020130685A1 (de) 2020-11-20 2020-11-20 Strahler sowie Leuchte mit einer Vielzahl solcher Strahler

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EP1681509A1 (fr) * 2005-01-17 2006-07-19 Omron Corporation Source luminescente et réseau de sources luminescentes
DE102017213488A1 (de) 2017-02-14 2018-08-16 Zumtobel Lighting Gmbh Leuchte sowie Verfahren zur Steuerung der Abstrahlcharakteristik derselben
US10190746B1 (en) * 2018-01-11 2019-01-29 Abl Ip Holding Llc Optical lens for beam shaping and steering and devices using the optical lens
WO2019137909A1 (fr) * 2018-01-10 2019-07-18 Signify Holding B.V. Lampe à del et procédé de commande de lampe à del
DE102018106223A1 (de) 2018-03-16 2019-09-19 Siteco Beleuchtungstechnik Gmbh Scheinwerfer mit regelbarer Lichtverteilung
US10655832B2 (en) * 2015-12-22 2020-05-19 Ledlenser GmbH & Co. KG Head lamp or flashlight
US20200340637A1 (en) * 2019-04-04 2020-10-29 Fusion Optix, Inc. Lighting Assembly for Adjustable Light Distribution
EP3736486A1 (fr) * 2019-05-08 2020-11-11 ZG Lighting France S.A. Dispositif d'éclairage et système d'éclairage de rue variable

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Publication number Priority date Publication date Assignee Title
US9470406B2 (en) 2012-09-24 2016-10-18 Terralux, Inc. Variable-beam light source and related methods
US10420177B2 (en) 2016-12-19 2019-09-17 Whelen Engineering Company, Inc. LED illumination module with fixed optic and variable emission pattern

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1681509A1 (fr) * 2005-01-17 2006-07-19 Omron Corporation Source luminescente et réseau de sources luminescentes
US10655832B2 (en) * 2015-12-22 2020-05-19 Ledlenser GmbH & Co. KG Head lamp or flashlight
DE102017213488A1 (de) 2017-02-14 2018-08-16 Zumtobel Lighting Gmbh Leuchte sowie Verfahren zur Steuerung der Abstrahlcharakteristik derselben
WO2019137909A1 (fr) * 2018-01-10 2019-07-18 Signify Holding B.V. Lampe à del et procédé de commande de lampe à del
US10190746B1 (en) * 2018-01-11 2019-01-29 Abl Ip Holding Llc Optical lens for beam shaping and steering and devices using the optical lens
DE102018106223A1 (de) 2018-03-16 2019-09-19 Siteco Beleuchtungstechnik Gmbh Scheinwerfer mit regelbarer Lichtverteilung
US20200340637A1 (en) * 2019-04-04 2020-10-29 Fusion Optix, Inc. Lighting Assembly for Adjustable Light Distribution
EP3736486A1 (fr) * 2019-05-08 2020-11-11 ZG Lighting France S.A. Dispositif d'éclairage et système d'éclairage de rue variable

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