EP2871411A1 - Élément optique pour un dispositif d'éclairage, et dispositif d'éclairage - Google Patents

Élément optique pour un dispositif d'éclairage, et dispositif d'éclairage Download PDF

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Publication number
EP2871411A1
EP2871411A1 EP20140191613 EP14191613A EP2871411A1 EP 2871411 A1 EP2871411 A1 EP 2871411A1 EP 20140191613 EP20140191613 EP 20140191613 EP 14191613 A EP14191613 A EP 14191613A EP 2871411 A1 EP2871411 A1 EP 2871411A1
Authority
EP
European Patent Office
Prior art keywords
optical element
light
lens
lamp
optical
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.)
Granted
Application number
EP20140191613
Other languages
German (de)
English (en)
Other versions
EP2871411B1 (fr
EP2871411B2 (fr
Inventor
Tanja ILIC
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
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Application filed by Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Publication of EP2871411A1 publication Critical patent/EP2871411A1/fr
Publication of EP2871411B1 publication Critical patent/EP2871411B1/fr
Application granted granted Critical
Publication of EP2871411B2 publication Critical patent/EP2871411B2/fr
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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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • 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
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for 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
    • 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
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • 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 invention relates to an optical element for a lamp, in particular an LED lamp (LED: light-emitting diode), and a lamp with such an optical element.
  • LED light-emitting diode
  • a grid lamp which comprises a plurality of grid cells or short cells, from which emerges the light emitted by the lamp light. With such a lamp light is emitted selectively over the cell areas, wherein the cells extend distributed over a total of a larger total area of time.
  • a lens and a reflector In order to achieve a suitable glare of emerging from a cell light in a grid lamp, it is necessary to use a lens and a reflector.
  • a corresponding lens which has an approximately truncated pyramid or truncated cone-like shape, wherein a recess is provided, which is designed to receive an LED or a group of LEDs.
  • the lens At the side opposite this recess, the lens has a curved surface on which the light emitted by the LED or the LED group undergoes a refraction.
  • the lateral areas of the frustoconical lens element are used for total reflection of the light.
  • a reflector is required in addition to the lens.
  • the invention has for its object to provide a corresponding, improved optical element for a lamp; in particular, the optical element should enable cost-effective production. Furthermore, a luminaire is to be specified with such an optical element.
  • an optical element for a luminaire having at least one lens element made of a first material and a holding element made of a second material, the second material differing in optical properties from the first one Material is different.
  • the at least one lens element and the holding element are designed integrated such that the optical element is in one piece.
  • the holding element opens up the possibility of realizing a reflector function of the optical element, with the integrally formed design enabling a manufacturing-technically advantageous one-piece design together with the at least one lens element.
  • the optical element can be designed as an effective contact protection element for the luminaire.
  • the first material and the second material are using the same base material, for example polycarbonate.
  • the first material is preferably formed using a first base material, for example polymethylmethacrylate
  • the second material is formed using a different second base material, for example polycarbonate.
  • Such a choice of material makes it possible to achieve particularly advantageous suitable optical properties of the optical element.
  • the optical element consists only of the at least one lens element and the holding element.
  • a facilitated production of the optical element is made possible.
  • the at least one lens element and the holding element via an adhesive connection and / or a positive connection held together.
  • This allows a particularly suitable cohesion of said components.
  • the holding element is formed by encapsulation of the at least one lens element. This allows a further facilitated production.
  • the optical element is produced by a two-component injection molding process.
  • the at least one lens element is optically clear; the holding element preferably has a white surface.
  • the holding element preferably has a white surface.
  • the at least one lens element has a light entry side and, opposite thereto, a light exit side, wherein in particular the light entry side has a concave curvature for receiving at least one LED.
  • This is photometrically advantageous.
  • the holding element is a reflector element and the optical element is designed so that a light entering via the light entry side light can leave the at least one lens element on the light exit side and incident on the reflector element.
  • the optical element is preferably designed in such a way that an additional light entering via the light entry side can leave the at least one lens element via the light exit side, without subsequently impinging on the reflector element. This is advantageous with respect to the lighting efficiency of the optical element.
  • the optical element is pot-shaped, in particular as a cover for the lamp.
  • the optical element can be designed particularly suitable as a contact protection element of the lamp.
  • the retaining element has latching elements, in particular for a latching connection with an LED board of the lamp or a housing of the lamp. This allows a particularly easy to produce mechanical connection of the optical element with the LED board or the housing of the lamp.
  • a luminaire which has an optical element according to the invention, and at least one LED, which is arranged such that a light generated by the at least one LED enters the at least one lens element, in particular without prior interaction with one another optical element.
  • the lamp further comprises a board, wherein the at least one LED is arranged on the board and the board is connected via a latching connection with the optical element.
  • the optical element forms a cover of the lamp.
  • Fig. 1 shows a perspective sketch of an embodiment of an optical element according to the invention.
  • the optical element is designed to be used as part of a luminaire, in particular for influencing a light emitted by LEDs which form a light source of the luminaire. there it can be provided that the optical element is the only effective optical element of the luminaire for influencing the light emitted by the LEDs.
  • the optical element comprises at least one lens element 1, in this case a plurality of lens elements 1 and a holding element 2.
  • the optical element may have a total of more than five or more than ten lens elements 1.
  • the lens elements 1 consist of a first material and the holding element 2 of a second material, wherein the second material differs from the first material in its optical properties.
  • the first material and the second material are formed using the same base material; the base material may in particular be polycarbonate.
  • the first material can be, for example, clear or transparent or translucent polycarbonate and the second material can be a treated polycarbonate, for example a colored or coated polycarbonate, so that the second material is not translucent or opaque.
  • the first material is formed using a first base material, for example polymethylmethacrylate
  • the second material is formed using a different second base material, for example polycarbonate.
  • Each of the lens elements 1 is designed to affect the light of one or more of the LEDs of the luminaire.
  • the lens elements 1 are preferably in each case annularly surrounded by the holding element 1, such that the holding element 2 forms a holding framework for the lens elements 1.
  • the at least one lens element 1 and the holding element 2 are designed so integrated that the optical element is in one piece.
  • the optical element consists only of the at least one lens element 1 and the holding element 2.
  • the at least one lens element 1 and the holding element 2 are held together via a material connection and / or a positive connection.
  • the optical element is a one-piece or integrally formed component of the luminaire, which can be produced advantageously and allows easier assembly of the luminaire.
  • the holding element 2 is formed by encapsulation of the at least one lens element 1.
  • the at least one lens element 1 can first be arranged in a corresponding injection molding tool and then the holding element 1 can be produced by injection molding with the aid of this injection molding tool.
  • the optical element may be made, for example, by a two-component injection molding process. In this case, preferably the first and the second material form the two components.
  • the first material of which the at least one lens element 1 is made may be, for example, polymethylmethacrylate (PMMA), the second material may be polycarbonate.
  • the at least one optical lens element 1 is preferably optically clear.
  • the holding element 2 may advantageously have a white surface in terms of lighting technology; Preferably, the holding element 2 is made opaque. This makes it possible to achieve that the holding element 2 has suitable reflector properties.
  • the optical element is preferably designed overall pot-shaped.
  • it may comprise a first part 81, through which a bottom part of the pot shape is formed and a second part 82, through which a particular annular circumferential side wall portion of the pot shape is formed.
  • the at least one lens element 1 is designed only as a bestsand part of the first part 81.
  • Fig. 2 shows in a section of a cross-sectional sketch of components of a lamp according to the invention with the optical element.
  • the lamp includes an LED board 4 or short board 4, are arranged on the LEDs 3, which form a light source of the lamp.
  • the design is such that a light generated by the LEDs 3 is optically influenced by the optical element.
  • the lens elements 2 are advantageously arranged so that they all pass through a common plane E.
  • the first part 81 of the optical element may be shaped to comprise or consist of a plate-shaped portion 815, the shape of which defines another plane E ', which is preferably oriented parallel to the first plane E, and at least a cell region 7, in this case a plurality of cell regions 7, each of the cell regions 7 comprising exactly one of the lens elements 1.
  • the cell regions 7 are designed such that they are designed to lift out of the plane E ' , in such a way that they pass through the first-mentioned plane E, in particular with the respectively associated lens element 1.
  • the cell regions 7 can advantageously cells in Sense of a grid light be formed.
  • the first part 81 of the optical element comprises at least one annular region 816, in this case a plurality of annular regions 816, wherein each of the cell regions 7 comprises exactly one of the annular regions 816.
  • the at least one annular region 816 is preferably designed as part of the retaining element 2.
  • Each cell region 7 thus comprises exactly one of the lens elements 1, as well as exactly one of the annular regions 816.
  • the annular region 816 of a cell region 7 is annularly formed surrounding the associated lens element 1.
  • This annular region 816 is preferably designed with an inwardly-facing surface, with respect to the ring shape, which is reflective for light, so that a reflector for the respective cell region 7 is formed by the annular region 816.
  • this inwardly facing surface of the annular region 816 is preferably designed such that it is formed to be divergent in the direction of the plane E ' .
  • the extends Ring area 816 up to the plane E 'and in the latter forms an edge region of an opening of the respective cell area 7, which is provided for the passage of light.
  • the opening or the edge region forming the opening can, for example, be circular, or to a first approximation rectangular, preferably square in shape.
  • the entire holding element 2 is designed as a reflector element.
  • the annular region 816 of a cell region 7 surrounds the relevant lens element 1 in a ring-shaped closed manner and contacting on all sides, so that no passage opening is formed between the lens element 1 and the adjacent annular region 215.
  • the design is such that the annular region 816 in the plane E forms a further opening which is closed by the relevant lens element 1. This is due to the annular contact area between the annular region 816 on the one hand and the lens element 1 on the other hand both advantageous with respect to the cohesion between the lens element 1 and the holding element 2, as well as advantageous with respect to the optical properties of the cell region. 7
  • the optical element is particularly suitable to be designed as a cover for the lamp.
  • the optical element forms a contact protection element for the lamp, are protected by both the LEDs 3 from accidental contact, as well as a user of the lamp against accidental contact of the LEDs 3 and the board 4, on which the LEDs 3 are arranged, is protected.
  • an LED board can generally have live parts, which are subjected to a voltage of 230 V, for example.
  • the at least one lens element 1 can in principle be shaped as it is known from the prior art described at the outset. Preferably, it has a light entry side 15 and, opposite thereto, a light exit side 16. In this case, the light entry side 15 preferably has a concave curvature or a recess for receiving at least one of the LEDs 3 of the luminaire.
  • the optical element is preferably designed so that a light L1 entering via the light entrance side 15 can leave the at least one lens element 1 via the light exit side 16 and subsequently onto the retaining element designed as a reflector element 2.
  • Element 2 in particular impinges on the corresponding annular region 816 of the holding element 2, in particular such that it is reflected there and furthermore leaves the relevant cell region 7 and the light as a whole. In this way, it can be achieved that light beams which leave the light exit side 16 of the lens element 1 with respect to the plane E ' at flat angles are reflected. As a result, it can be particularly effectively avoided that the light emerging from the cell region 7 leads to undesired glare of a viewer of the luminaire.
  • the optical element is furthermore designed in such a way that, as indicated by another exemplary light beam L2 , a further light L2 entering via the light entry side 15 can leave the at least one lens element 1 via the light exit side 16, without Element 2 or another part of the lamp, especially without impacting the ring area 816 concerned. This is advantageous with respect to the efficiency of the luminaire.
  • the cell areas 7 are preferably all of identical design.
  • Fig. 3 shows a perspective detail sketch according to a variant.
  • the optical element preferably has latching elements for a latching connection V to the LED board 4 of the lamp.
  • the LEDs 3, which are arranged in the recesses of the lens elements 1, are preferably LEDs 3 of this LED board 4.
  • the LED board 4 is arranged in the lamp parallel to the plane E oriented, in particular on one, the plane E. ' opposite side of the plane E.
  • the design is preferably such that the LED board 4, the lens elements 1 contacted, in particular at the edges of the recesses of the light entry sides 15 contacted.
  • the optical element when it is connected via the latching connection V to the LED board 4, forms a particularly effective touch protection element for the LEDs 3.
  • the design is such that the light emitted by the LEDs 3 of the LED board 4 enters the lens elements 1 without being previously influenced by another optical element.
  • the second part 82 of the optical element, through which the annular peripheral side wall region is formed, can likewise have latching elements for connection to at least one further component of the luminaire, in particular on an edge region of the side wall region facing away from the plane E ' .
  • the further component of the luminaire may, for example, again be the LED board 4 or a housing of the luminaire.
  • the side wall portion extends from the plane E 'to the plane E, in particular such that it passes through the plane E in a ring-shaped closed manner.
  • An optical element according to the invention can be produced particularly inexpensively; Moreover, a particularly suitable contact protection for the luminaire can be formed with the optical element. In this case, can be achieved with a lamp, which is provided with an optical element according to the invention, a light output as with a conventional grid lamp.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP14191613.0A 2013-11-06 2014-11-04 Élément optique pour un dispositif d'éclairage, et dispositif d'éclairage Active EP2871411B2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201310222481 DE102013222481A1 (de) 2013-11-06 2013-11-06 Optisches Element für eine Leuchte, sowie Leuchte

Publications (3)

Publication Number Publication Date
EP2871411A1 true EP2871411A1 (fr) 2015-05-13
EP2871411B1 EP2871411B1 (fr) 2016-08-31
EP2871411B2 EP2871411B2 (fr) 2021-07-07

Family

ID=51844618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14191613.0A Active EP2871411B2 (fr) 2013-11-06 2014-11-04 Élément optique pour un dispositif d'éclairage, et dispositif d'éclairage

Country Status (3)

Country Link
EP (1) EP2871411B2 (fr)
AT (1) AT15030U1 (fr)
DE (1) DE102013222481A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3409439A1 (fr) * 2017-05-31 2018-12-05 OSRAM GmbH Dispositif optique, agencement d'éclairage, phares et procédé
WO2022023441A1 (fr) * 2020-07-28 2022-02-03 Schreder S.A. Procédé d'assemblage de modules optiques d'un luminaire et ensemble optique

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WO2003048637A1 (fr) * 2001-12-06 2003-06-12 Fraen Corporation S.R.L. Module d'eclairage a dissipation elevee de chaleur
EP2085680A1 (fr) * 2008-01-30 2009-08-05 Optics Lite S.r.L. Module d'éclairage à DEL
US20100195330A1 (en) * 2009-01-30 2010-08-05 Gary Eugene Schaefer Reflector alignment recess
WO2012115565A1 (fr) * 2011-02-24 2012-08-30 Nordic Light Ab Agencement de fixation et système d'éclairage
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3409439A1 (fr) * 2017-05-31 2018-12-05 OSRAM GmbH Dispositif optique, agencement d'éclairage, phares et procédé
WO2022023441A1 (fr) * 2020-07-28 2022-02-03 Schreder S.A. Procédé d'assemblage de modules optiques d'un luminaire et ensemble optique

Also Published As

Publication number Publication date
EP2871411B1 (fr) 2016-08-31
AT15030U1 (de) 2016-11-15
EP2871411B2 (fr) 2021-07-07
DE102013222481A1 (de) 2015-05-07

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