WO2012038399A1 - Système optique et lampe pour éclairage direct ou indirect - Google Patents

Système optique et lampe pour éclairage direct ou indirect Download PDF

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Publication number
WO2012038399A1
WO2012038399A1 PCT/EP2011/066279 EP2011066279W WO2012038399A1 WO 2012038399 A1 WO2012038399 A1 WO 2012038399A1 EP 2011066279 W EP2011066279 W EP 2011066279W WO 2012038399 A1 WO2012038399 A1 WO 2012038399A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light source
optical system
solid angle
optical element
Prior art date
Application number
PCT/EP2011/066279
Other languages
German (de)
English (en)
Inventor
Stephan Ebner
Original Assignee
Zumtobel Lighting 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 Zumtobel Lighting Gmbh filed Critical Zumtobel Lighting Gmbh
Priority to EP11761335.6A priority Critical patent/EP2619503B1/fr
Publication of WO2012038399A1 publication Critical patent/WO2012038399A1/fr

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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of 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
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved

Definitions

  • the invention relates to an optical system for generating a simultaneous
  • the invention relates to a corresponding lamp.
  • a corresponding optical system is known for example from DE 10 2006 018 255 AI as part of a luminaire for generating a direct and an indirect illumination.
  • This luminaire can be adjusted by adjusting a
  • Light influencing element change the indirect lighting, but not the direct lighting.
  • the invention has for its object to provide a corresponding optical system that offers better ways of influencing the light output.
  • a luminaire is to be specified with such an improved optical system.
  • an optical system for generating a simultaneous light beam in a first solid angle area around a first direction and in a second solid angle area around a second, the first direction by 180 ° opposite direction provided, in particular for a lamp for generating a light output in the first solid angle range for a direct lighting and a further light output in the second solid angle range for indirect lighting.
  • the optical system comprises a light source for generating a light, and an optical element for
  • Radiation behavior of the optical system cause which affects both the light output in the first, as well as the light output of the second Jardinwinkelb area. In this way, the possibilities for influencing the light output of the optical system are improved.
  • the optical system further comprises a pivot bearing arrangement for pivotally mounting the light source relative to the optical element.
  • a pivot bearing arrangement for pivotally mounting the light source relative to the optical element.
  • the optical system further comprises a primary optic element disposed between the light source and the optical element, preferably in the form of a lens associated with the light source. This allows the
  • the pivot bearing arrangement is also advantageously designed for preferably simultaneous pivoting of the light source and the primary optic element relative to the optical element.
  • the optical system further comprises a linear bearing arrangement for the linearly displaceable arrangement of the optical element relative to the light source. This makes it possible that can be changed by corresponding linear displacement of the optical element, the light distribution curves of the light outputs in the first and in the second solid angle range.
  • the optical element has a first, at least partially
  • the light source has a rectilinearly shaped luminous element and / or a plurality of luminous elements, which are arranged along a straight line, wherein the first surface has a first surface normal and the second surface has a second surface normal and the optical system is designed such that the first and the second surface normal in a plane normal to the straight line.
  • the optical system further comprises a further light source, which is preferably formed and arranged mirror-symmetrically relative to the first-mentioned light source analogously and / or with respect to a plane passing through a center of the optical element.
  • the optical system further advantageously has a further pivot bearing arrangement for the pivotable arrangement of the further light source relative to the optical element, wherein preferably the optical system is designed such that the further light source can be pivoted independently of the first-mentioned light source.
  • the light source may comprise an annular luminous element and / or a plurality of luminous elements arranged along a ring shape, wherein the light source is arranged around the optical element.
  • the optical element in a cross section along the first direction is advantageously hexagonal or quadrangular, preferably square or diamond-shaped.
  • Generation of a light output in the first solid angle range for direct lighting and a further light output in the second solid angle range is designed for indirect lighting.
  • the luminaire has a luminaire housing which is arranged around the optical system, the luminaire housing having a first housing
  • a secondary optical element is advantageously arranged in the first or in the second light exit opening, and preferably a further secondary optical element in the other of the two light exit openings.
  • optical system with three different pivot positions of the light sources relative to the optical
  • Element, 2 is a further schematic diagram of a linear displacement of the optical element relative to a light source, a sketch of a perspective view of an optical system according to the invention with linear light sources and a linear optical element,
  • Figures 4a, 4b and 4c examples of differently shaped optical elements
  • FIGS. 5a and 5b show two sketches for a further exemplary embodiment, in which primary-optical and secondary-optical elements are provided.
  • FIG. La an embodiment of an optical system according to the invention is sketch-like indicated in a cross section.
  • the optical system serves the
  • a Li chtab radiation "down" and "up” is provided.
  • the optical system is suitable in particular for a luminaire for generating a light output in the first solid angle range or downwards for direct illumination and in the second solid angle range or upwards for indirect illumination.
  • the luminaire may be a standing or suspended luminaire.
  • the optical system has a light source 2 for generating a light.
  • the light source may be, for example, one or more LEDs (LED:
  • the light source 2 has a non-isotropic light intensity distribution, that is, for example, a Lambert characteristic.
  • the optical system has an optical element 4, which is for deflecting a first part of the light generated by the light source 2 in the first
  • Solid angle range rl is formed and for the simultaneous deflection of a second part of the light in the second solid angle region r2. Accordingly, the optical element 4 may also be referred to as a "light directing element".
  • the optical element 4 as large a part of the light source from the second
  • radiated light in the two solid angle ranges rl, r2 deflects, so for example, at least 90% or 95% or all of the light emitted from the light source 2, so the originating from the light source 2 light in the two solid angle ranges rl, r2 "splits".
  • the optical element 4 can have a first surface 6, which serves for deflecting into the first solid angle region r 1 and a second surface 8, which is used for the
  • the first surface 6 is at least partially reflective, as is the second surface 8.
  • the two surfaces 6, 8 may be reflective surfaces.
  • the optical system may also comprise a further light source 10, which is preferably formed analogously and / or with respect to a plane passing through a center M of the optical element 4 level E mirror symmetrical to the first-mentioned light source 2 and is arranged.
  • the plane E is preferably oriented such that it extends along the first direction Rl.
  • the optical element 4 is in this case preferably mirror-symmetrical to the plane E formed, so that it in particular, for example, a third surface 12 which, for the corresponding deflection of a part of one of the other Light source 10 radiated light in the first solid angle range rl or down and serves a fourth surface 14, which serves for the corresponding deflection of a further portion of the radiated light from the further light source 10 in the second solid angle range r2 or upwards.
  • the optical element 4 thus influences both the light output of the optical system downwards, as well as the light output to the top. As a result of a change in the relative position between the optical element 4 and the light source 2, it is thus fundamentally possible to influence the emission behavior of the optical system or the luminaire.
  • the optical system particularly advantageously has a pivot bearing arrangement (not shown separately in FIG. 1 a), in particular in the form of a pivot bearing arrangement
  • Rotary bearing arrangement for the pivotable or rotatable arrangement of the light source 2 relative to the optical element 4.
  • the pivot bearing arrangement can be designed so that the light source 2 is a - in Fig. 1 perpendicular to the plane
  • extending - rotary or pivot axis A is arranged rotatable or pivotable.
  • the arrangement is preferably designed such that the axis of rotation A extends in a small environment of the light source 2 or passes through the light source 2.
  • the arrangement is furthermore preferably such that the axis of rotation A encloses a right angle with the first direction Rl. Further advantageously, the axis of rotation A is parallel to the plane E.
  • the second light source 10 is preferably by a, analogous to the first mentioned
  • Swivel bearing arrangement designed and arranged, mounted further pivot bearing assembly.
  • the two pivot bearing arrangements are advantageously designed symmetrically with respect to the plane E.
  • the optical system can be designed such that the further
  • Light source 10 can be pivoted independently of the first-mentioned light source 2. This makes it possible for an asymmetrical light distribution to be set in the first solid angle range r 1 and / or in the second solid angle range r 2.
  • Figures lb and lc show the system with changed pivot positions of the light source 2 and the other light source 10.
  • Fig. Lb the case is sketched in which the light source 2 is rotated or pivoted so that they on the surfaces 6, 8 respectively sends the same amount of light.
  • solid, dashed and dotted lines the light distribution is indicated.
  • a solid line means "high intensity”, a dashed line "average intensity” and a dotted line “low intensity.” Accordingly, it can be seen in Fig. 2 that the light originating from the light source 2 is uniformly divided downward and upward ,
  • FIG. 1 a shows the case where the light source 2 is rotated in such a way that more light is emitted from the light source 2 into the first solid angle range r 1 than into the second solid angle range r 2.
  • the second light source 10 is brought into an analog rotational position.
  • the optical system emits more light down than up.
  • a corresponding change in the amount of light can be achieved while maintaining the shape of the light distribution curves.
  • the optical system can be provided as part of a luminaire, wherein the luminaire is designed to generate a light output in the first solid angle range rl for a direct illumination and a further light output into the second solid angle region r2 for an indirect illumination.
  • the luminaire can be, for example, a floor lamp or a pendant luminaire.
  • the optical system can thus represent a lighting unit of the lamp.
  • the luminaire has a luminaire housing 16, which is indicated by dashed lines in FIG. 1c, which is arranged around the optical system, the luminaire housing 16 having a first light exit opening 18 for emitting light into the first solid angle region r1 or downwards and a second light exit opening 20 for emitting light into the second solid angle region r2 or upwards.
  • the luminaire housing 16 By appropriate rotation of the light source 2 and optionally the other light source 10 so the proportion of indirect lighting can be dimmed high or dim down; The proportion of direct lighting can also be dimmed or dimmed down.
  • the first-mentioned light source 2 and the further light source 10 can be pivoted in opposite directions, so that the ratio of the intensities between the direct component and the indirect component of the illumination changes.
  • an asymmetric light emission can be brought to the bottom and top; This may be advantageous, for example, in the case of a floor lamp, which is provided for illuminating a workplace.
  • the light source 2 may have a rectilinearly shaped luminous element, for example in the form of a fluorescent lamp and / or a plurality of luminous elements, for example in the form of LEDs, which are arranged along a straight line. With reference to the figures la to lc, the arrangement may be such that the straight line is perpendicular to the plane of the drawing. The same applies to the further light source 10.
  • the optical element 4 is also elongated and arranged to extend with its longitudinal axis parallel to the straight line.
  • the optical element 4 may have a uniform cross-section over its entire length.
  • the optical element 4 may be hexagonally shaped in a cross-section along the first direction R1 and normal to the straight line.
  • the optical element 4, however, can also be quadrangular, in particular square or diamond-shaped, viewed in this section.
  • the first surface 6 advantageously has a first surface normal N1 sketched by way of example in FIG. 1b and the second surface 8 a second surface normal N2, wherein the optical system is designed such that the first and the second
  • a further advantageous embodiment is to design the optical system with a linear bearing arrangement for the linearly displaceable arrangement of the optical element 4 relative to the light source 2.
  • the arrangement is such that the optical element 4 along the first direction Rl can be linearly displaced.
  • This configuration makes it possible to change the light distribution curve of the light emitted from the optical system or the lamp. For example, in this way, an opening angle of the light emitted downwards or upwards can be increased or decreased.
  • the first light source 2 and also the optical element 4 may be elongate, with the light source 2 and the optical element 4 in this case preferably being arranged aligned parallel to one another. Accordingly, this arrangement may be referred to as a linear illumination arrangement and the optical system is particularly well suited for such linear
  • FIG. 3 another embodiment is sketched outlined having such a linear design.
  • the reference numerals are used analogously below and only the differences from the first-mentioned embodiment shown.
  • the light source 2 is given in the form of LEDs, which are arranged along the straight line G.
  • the LEDs can be arranged on an elongated circuit board 26 and be thermally connected to a heat sink 22 for effective heat dissipation, which is preferably arranged opposite the LEDs with respect to the circuit board 26.
  • the axis of rotation A may extend parallel to the straight line G and, for example, through the heat sink 22; it can also coincide with the line G
  • a rotation of the first light source 2 is indicated by a double arrow 24.
  • the further light source 10 may be formed analogously and be arranged with respect to the optical element 4 on the opposite side.
  • the optical element 4 is preferably oblong in this example and has a longitudinal axis L which is arranged parallel to the straight line G. In the shown
  • the optical element 4 is not hexagonal in cross-section, but quadrangular, namely diamond-shaped.
  • the invention is not limited to such linear arrangements. It is also suitable, for example, for an annular light source, such as an annular, but also, for example, a polygonal annular, for example rectangular shaped light source.
  • the light source may have an annular luminous element and / or a plurality of luminous elements,
  • LEDs arranged along a ring shape around the optical element.
  • the optical element may be centrally located with respect to the ring shape.
  • FIGS. 4b and 4c two different shapes for an optical element are sketched by way of example, which are suitable in this case.
  • FIG. 4 a an optical element is sketched for comparison, as corresponds to the example shown in FIG. 3.
  • the optical system may also comprise at least one further optical element. This will be explained in more detail by way of example with reference to FIGS. 5a and 5b.
  • a primary optic element 30 preferably in the form of a lens, for example in the form of a
  • Conveying lens be arranged, which is associated with the light source 2. It can thus in particular for influencing light between the light source 2 and the serve optical element 4. With such a primary optic element 30, the Ab beam characteristic of the light source 2 can be favorably changed.
  • a corresponding, preferably analog, further primary optical element 30 ' may be provided for the further light source 10.
  • the primary optic element 30 may be a converging lens which focuses a light emanating from the light source 2, for example, forms it into parallel beams.
  • the primary-optic element can also be provided, for example, in the form of an oblong, in cross-section U-shaped, reflector, by which a light emission of the light source in the direction of the optical element 4 is supported; For example, such a reflector may extend around an elongate fluorescent lamp that forms the light source.
  • the pivot bearing assembly may be configured to pivot the light source 2 and the primary optic element 30 relative to the optical element 4.
  • the pivot bearing assembly for simultaneously pivoting the light source 2 and the primary optic element 30 is formed relative to the optical element 4.
  • the pivot bearing arrangement is not designed for the pivotable mounting of the primary optic element 30, so that therefore the light source 2 is rotated without the primary optic element 30 or
  • a design for simultaneously rotating or tilting the light source 2 and the primary optic element 30 allows only a rotation through a smaller angle of rotation to achieve a certain optical effect.
  • the pivot bearing assembly is not designed to pivot the primary optic element 30 and also the further pivot bearing assembly is not for pivoting the further primary optic
  • the optical system may have a secondary optical element 32, which is arranged downstream of the optical element 4 in the sense of the light path.
  • a corresponding luminaire with the first light exit opening 18 may be provided, in which the secondary optic element 32 is arranged.
  • the secondary optical element may have, for example, reflective and / or diffuse light-influencing properties; For example, it may be a reflector, a diffuser or a micro-prism optics.
  • a desired light distribution is set as part of the installation of a corresponding lamp, which is then changed at later times only rarely.

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

Abstract

L'invention concerne un système optique destiné à générer un rayonnement lumineux simultané dans une première zone d'angle solide (rl) autour d'une première direction (Rl) et dans une deuxième zone d'angle solide (r2) autour d'une deuxième direction (R2) opposée de 180° à la première direction. Ce système est destiné en particulier pour une lampe pour générer une émission de lumière dans la première zone d'angle solide (rl) pour un éclairage direct et une autre émission de lumière dans la deuxième zone d'angle solide (r2) pour un éclairage indirect et présente une source lumineuse (2) destinée à générer une lumière, ainsi qu'un élément optique (4) destiné à dévier une première partie de la lumière dans la première zone d'angle solide (rl) et à dévier une deuxième partie de la lumière dans la deuxième zone d'angle solide (r2).
PCT/EP2011/066279 2010-09-21 2011-09-20 Système optique et lampe pour éclairage direct ou indirect WO2012038399A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11761335.6A EP2619503B1 (fr) 2010-09-21 2011-09-20 Système optique et lampe pour éclairage direct ou indirect

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202010008598.5 2010-09-21
DE202010008598U DE202010008598U1 (de) 2010-09-21 2010-09-21 Optisches System und Leuchte für direkte und indirekte Beleuchtung

Publications (1)

Publication Number Publication Date
WO2012038399A1 true WO2012038399A1 (fr) 2012-03-29

Family

ID=44681112

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/066279 WO2012038399A1 (fr) 2010-09-21 2011-09-20 Système optique et lampe pour éclairage direct ou indirect

Country Status (3)

Country Link
EP (1) EP2619503B1 (fr)
DE (1) DE202010008598U1 (fr)
WO (1) WO2012038399A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014114309A1 (de) * 2014-10-01 2016-04-07 Osram Gmbh Leuchte mit direktem und indirektem Lichtanteil
DE102014119616A1 (de) 2014-12-23 2016-06-23 Siteco Beleuchtungstechnik Gmbh LED-Linsenkörper zur Erzeugung eines Direkt- und Indirektlichtanteils
DE102015207987A1 (de) * 2015-04-30 2016-11-03 Zumtobel Lighting Gmbh Leuchtvorrichtung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB510448A (en) * 1938-02-01 1939-08-01 Gerard De Witt Improvements in or relating to reading and working lamps
US2341895A (en) * 1940-07-12 1944-02-15 Morris B Beck Fluorescent tube lighting fixture
DE3706110A1 (de) * 1987-02-25 1988-06-01 Valledor Jesus Vara Waagerechte leuchte fuer leuchtstofflampen
WO1999013266A1 (fr) * 1997-09-08 1999-03-18 Simon Jerome H Eclairage architectural distribue a partir d'une lumiere contenue alignee radialement et au moyen de luminaires compacts efficaces
DE19859936A1 (de) * 1998-12-24 2000-07-13 Alfred Korsch Leuchte
DE102006018255A1 (de) 2006-04-18 2007-10-25 Zumtobel Lighting Gmbh Leuchte, insbesondere Hängleuchte, mit einem ersten und einem zweiten Licht-Abstrahlbereich
WO2008139383A1 (fr) * 2007-05-10 2008-11-20 Koninklijke Philips Electronics N.V. Dispositif d'éclairage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1957192A (en) * 1932-02-11 1934-05-01 Ainsworth George Lighting fixture
US5046805A (en) * 1990-07-16 1991-09-10 Simon Jerome H Tapered optical waveguides for uniform energy (light) distribution including energy bridging
US5303322A (en) * 1992-03-23 1994-04-12 Nioptics Corporation Tapered multilayer luminaire devices
DE19961493A1 (de) * 1999-05-25 2000-11-30 Siteco Beleuchtungstech Gmbh Hängeleuchte mit indirekter Lichtabstrahlung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB510448A (en) * 1938-02-01 1939-08-01 Gerard De Witt Improvements in or relating to reading and working lamps
US2341895A (en) * 1940-07-12 1944-02-15 Morris B Beck Fluorescent tube lighting fixture
DE3706110A1 (de) * 1987-02-25 1988-06-01 Valledor Jesus Vara Waagerechte leuchte fuer leuchtstofflampen
WO1999013266A1 (fr) * 1997-09-08 1999-03-18 Simon Jerome H Eclairage architectural distribue a partir d'une lumiere contenue alignee radialement et au moyen de luminaires compacts efficaces
DE19859936A1 (de) * 1998-12-24 2000-07-13 Alfred Korsch Leuchte
DE102006018255A1 (de) 2006-04-18 2007-10-25 Zumtobel Lighting Gmbh Leuchte, insbesondere Hängleuchte, mit einem ersten und einem zweiten Licht-Abstrahlbereich
WO2008139383A1 (fr) * 2007-05-10 2008-11-20 Koninklijke Philips Electronics N.V. Dispositif d'éclairage

Also Published As

Publication number Publication date
EP2619503B1 (fr) 2016-06-29
DE202010008598U1 (de) 2011-12-28
EP2619503A1 (fr) 2013-07-31

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