EP1398562A1 - Leuchte zur Erzielung eines scharfkantig ausgebildeten Lichtkegels - Google Patents

Leuchte zur Erzielung eines scharfkantig ausgebildeten Lichtkegels Download PDF

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Publication number
EP1398562A1
EP1398562A1 EP03020319A EP03020319A EP1398562A1 EP 1398562 A1 EP1398562 A1 EP 1398562A1 EP 03020319 A EP03020319 A EP 03020319A EP 03020319 A EP03020319 A EP 03020319A EP 1398562 A1 EP1398562 A1 EP 1398562A1
Authority
EP
European Patent Office
Prior art keywords
lens plate
luminaire according
micro
light
lenses
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.)
Withdrawn
Application number
EP03020319A
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German (de)
English (en)
French (fr)
Inventor
Leonhard Klose
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.)
Erco GmbH
Original Assignee
Erco Leuchten 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 Erco Leuchten GmbH filed Critical Erco Leuchten GmbH
Publication of EP1398562A1 publication Critical patent/EP1398562A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • 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
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light

Definitions

  • the invention relates to a luminaire according to the preamble of the claim 1.
  • Such lights are known in a variety of variants. It deals This is about building lights, preferably a bottom surface of the Illuminate building and therefore primarily on a building ceiling are arranged. Of course, but also comes an arrangement into consideration on a building wall. If necessary, also outer surfaces of the building.
  • a End element such as a darklight reflector used.
  • a Darklight reflector offers the one hand, the possibility of a relatively sharp-edged light cone to achieve, so that a dimmed area from a non-dimmed area is disconnected. This leads to a particularly good illumination of the floor surface, So to an illumination with a high efficiency or with low Loss of light output. Also is for a particularly high dimming such that a viewer who is in the dimming range, the Lamp practically does not perceive and the light exit surface this Viewer appears as a homogeneous, dark surface.
  • Such a darklight reflector also offers the Possibility that a user located inside the light cone the bulb can not detect.
  • the well-known, as darklight reflectors However, trained completion elements basically require one certain installation height.
  • the known darklight reflectors include, for example a grid-like strut structure, with the struts together are connected and also have curved surfaces for light conduction.
  • the properties of lights described above are, for example desired to be adjacent to each other in a room of a building Creating lighting situations without these mutually strong influence.
  • Luminaire program of the applicant, issue 2000/2001, page 340, is a luminaire terminating element called a prismatic lens for a lamp.
  • This lens plate has prismatic Elements similar to the previously described DE-OS 1 497 293, wherein the prism tips are slightly rounded. The use of this lens plate creates brilliance effects that lead to a decorative lighting effect. If a viewer is in a dimmed area, he recognizes sparkling through a plurality of points of light in this termination element.
  • the Object of the invention is a luminaire according to the preamble of Claim 1 further develop such that the light on the one hand in the dimmed area user with one for this essentially homogeneous, dark appearing light exit surface counteracts and on the other hand, a structural resolution of the light source for a light beam the viewer located largely prevented.
  • the invention solves this problem with the features of claim 1, essentially with those of the characterizing part, and is accordingly characterized characterized in that to achieve a sharp-edged, in particular substantially homogeneous light cone in the region of the light exit opening a lens plate arranged with a plurality of micro-lenses is.
  • micro-lenses In this case, such light-conducting elements are referred to, the manner of a Collective lens act. Likewise, however, can also be used as diverging lenses acting light-conducting elements as microlenses in the sense of the present Patent application be designated.
  • each considered prismatic element does not homogeneously illuminate a circular area, but rather created a circular ring
  • the micro-lenses the luminaire according to the invention for a homogeneous, for example circular, Illumination of the surface to be illuminated to form a sharp-edged, substantially homogeneous cone of light.
  • the arrangement of a variety of micro-lenses achieved that the bulbs, so the light source or the light sources, for a viewer are no longer immediately visible and no longer resolved can be. This improves the overall aesthetic impression of Lamp.
  • a cone of light within the meaning of the invention is not necessarily understood a cone, in the case of, for example, a substantially punctiform light source by passing the light through a substantially circular Light exit opening is created.
  • the term light beam is intended according to the invention however, any geometric shape of the floor surface to be illuminated and equally comprise any shape of the light exit opening. So can For example, the light exit opening as elongated, substantially be formed rectangular light exit opening of a field lamp.
  • the term light beam in the context of the invention clarifies that it There is a dimmed and a lit area, both from each other are sharply limited.
  • the invention finds use in lights that a produce almost completely homogeneous light cone.
  • the invention includes however, even those lights in which the light cone is not continuous is homogeneous, but for example, has an asymmetric light distribution.
  • the lamp according to the invention also allows a special flat design.
  • electronic Ballasts in axially elongated trained lights not in the axial direction to arrange behind the bulb, but essentially within the axial length of the bulb above the bulb, so that the light source between the electronic ballast and the Lens plate is and despite this arrangement, a flat design of Luminaire is possible.
  • each micro-lens has a curved. Interface with constant radius.
  • a lens in principle is an infinite multitude of juxtaposed prisms the light cone much more homogeneous than a prism plate.
  • the arrangement of the plurality of micro-lenses each other directly adjacent is particularly advantageous. This will ensure that the Luminous efficacy is maximum and a darklight effect can be optimally achieved can.
  • the micro-lenses due to a structuring of at least one surface of the lens plate educated. This allows a particularly simple production of the lens plate with the micro lenses.
  • the lens plate on the side facing away from the bulb and / or on the Bulb-facing side to form the spherical micro-lenses, outward bulges.
  • the arrangement of vaults is one particularly simple measure for the formation of converging lenses.
  • a Condenser lens is already achieved by the fact that the lens plate buckles on at least one of their two sides, so either on the to Bulbs turned or on the side facing away from the bulb Page. However, it may also be provided on both sides of the lens plate To provide bulges.
  • the lens plate on the side facing the bulb to form the Micro-lenses have spherical recesses.
  • the centers of the bulges and / or the centers of the recesses a distance of less than 5 mm. This allows for a special homogeneous formation of the light cone.
  • the centers of the bulges and / or the centers of the recesses a distance of less than 3 mm from each other. This will be the Homogeneity of the light cone further improved.
  • the centers of the bulges and / or the centers of the recesses a distance of less than 2 mm from each other. This will be the Homogeneity of the light cone further improved.
  • the vaults and / or the centers of the recesses have the vaults and / or the centers of the recesses a distance of more than 1 mm from each other.
  • Fig. 1 shows a schematic representation of an inventive Lamp 10, which are installed for example in a ceiling wall 11 can.
  • the luminaire 10 comprises a merely indicated luminaire housing 12, which surrounds an interior 13. In the embodiment is about
  • a reflector element 14 indicated, which optionally Also part of the housing 12 may be.
  • a compact Fluorescent lamp formed light source 15 arranged below is referred to as lighting. It is a particular spatially extended light source, for example a rod-shaped or a annular light source. Of course, depending on the type of light 10 also a plurality of lighting means 15 in one or more interior spaces 13 of the lamp 10 may be arranged.
  • the lamp 10 has a light exit opening 16, through which the light generated by the lamp 15 to form a light cone 17 exit.
  • the light exit opening 16 is in the inventive Luminaire according to FIG. 1 of a lens plate 18 substantially completely locked.
  • the light cone 17 is relatively sharp-edged, so that between a dimmed area 19 and a lighted area 20 a relatively clear transition is recognizable.
  • the light cone 17 illuminates a section 21 of a bottom surface 22. It may, depending on the shape of the light exit opening 16 for example, around a circular section 21 or to a rectangular or polygonal trained section 21, the Of course, can also have curved edge lines.
  • a first viewer 23 is disposed within the light cone 17 and is thus located in the non-dimmed area 20.
  • a second viewer 24 is arranged in the dimmed area 19, that is outside of the light cone 17.
  • the second viewer 24 enters the lens plate 18, and thus the entire light 10, as substantially homogeneous, dark surface opposite.
  • the lens plate 18 is substantially free of bright, sparkling points of light and thus causes no dazzling for the dimmed in the Area 19 second viewer 24.
  • the area of the room in which the second viewer 24 is located can thus be replaced by another, not shown light or a corresponding plurality of lights be illuminated, so that a lighting situation for example a second user 24 workstation can be reached by the user Lamp 10 is almost not affected.
  • the first observer 23 may in the direction behind the lens plate 18 arranged illuminant 15 in their structure, that is, in their geometric form, virtually no longer dissolve. Also in this case, the lens plate 18 appears as a largely homogeneous, now bright light radiating element.
  • the lamp according to the invention can thus be used in many ways, and certain sections 21 of floor surfaces 22 or other building surfaces brighten with maximum light output, without for one or more in the dimmed area 19 observers in any way disturbing to act.
  • dimming ⁇ is arbitrary. He will on the one hand by the shape of the reflector element 14 of the lamp 10 and on the other hand achieved by the special arrangement of the micro-lenses, on which will be discussed in detail later. However, the dimming angle ⁇ should illustrate that between a dimmed area 19 and an illuminated, so not dimmed area 20 clearly different.
  • the dimming angle ⁇ is for example 20 °, but if necessary also 30 ° or 40 °.
  • the lens plate 18 will now be explained in detail with reference to FIGS. 2 to 5:
  • FIG. 2 shows approximately in accordance with a bottom view according to arrow II in FIG. 1 the bottom of the lamp 10, of which practically only the lens plate 18th is recognizable.
  • the light exit opening 16 surrounding edge portion 25 of the housing 12 of the lamp 10 in Fig. 2 omitted.
  • the lens plate 18 is with its outer contour K to the not shown Adjusted inner contour of the light exit opening 16 and closes these thus substantially complete.
  • Fig. 2 shows a bottom view of the lens plate 18 schematically, already it can be seen that this has a honeycomb structure. This is however merely by way of example and will be described below with reference to FIG. 3 explained in detail:
  • a plurality of honeycombs 26 are arranged directly next to one another, so that they touch each adjacent.
  • the honeycomb 26a, 26b, 26c, 26d and 26e which form a linear series.
  • Each honeycomb 26, 26a, 26b, 26c, 26d, 26e By itself, a single micro-lens 27 is formed. Every micro-lens 27 is thus arranged immediately adjacent to another micro-lens 27 and adjoins this.
  • microlenses 27 are, as is apparent from Fig. 4 by way of example, first by a corresponding structuring of the to be illuminated Bottom surface 21 facing side 28 of the lens plate 18 is reached.
  • the micro-lenses 27 have been achieved by spherical bulges 30.
  • the underside 28 according to FIG. 4 thus, when considering a cross section of the lens plate, it appears as linear Sequence of circular arc sections 31, each arc section 31 each to a vertex S of a corresponding curvature 30th is symmetrical.
  • the result in Fig. 4 schematically along the section line IV-IV in Fig. 3 illustrated cross-sectional view alike when viewing the lens plate 18 of FIG. 3 along the cutting line IV'-IV 'as well as along the section line IV "-IV".
  • Each curvature 30 may represent, for example, a hemisphere. It can at the curvature 30 but also a cut off ball cap act.
  • a ball cap one speaks of ball section
  • a ball cap is understood the geometric body that arises when you make a sphere divided by a cut along a cutting plane in two parts, wherein a ball cap is that severed part of the ball, the smaller or is equal to a hemisphere.
  • each arc section 31 with a curvature constant radius so that each curvature 30 a micro-lens 27 is formed.
  • FIG. 5 is also the Inside 29 of the lens plate 18 structured and has spherical, of the Illuminant 15 directed recesses 32.
  • each micro-lens 27 is a converging lens.
  • the recesses 32 in turn have the geometric shape of a Ball cap. Again, it is important that the circular arc sections 33 each follow a line of curvature of constant radius. Preferably, the Radius of the circular arc portions 33 of the recesses 32 greater than that Radius of the circular arc sections 31 of the bulges 30.
  • FIG. 4 it is clear that in each case two directly adjacent cambers 30 and, if present, two adjacent recesses 32 have a distance ⁇ S. It is measured In this case, for example, the distance between two respective vertices S of the Buckling 30. If recesses 32, as in the embodiment According to FIG. 5, are present within the meaning of the invention, respectively lowest point of the spherical recess 32 equally as a vertex designated.
  • the lens plate 18 is preferably made of plastic, for example made of PMMA (polymethyl methacrylate) or PC (polycarbonate). In particular is a clear or dull, translucent plastic beneficial to to influence the light output only slightly.
  • the lens plate 18 may be formed, for example, as an injection molded part, wherein the Tool mold for the plastic according to elaborated counter-curvatures and counter-recesses must have.
  • the surfaces 28 and 29 through Processing a substantially flat surface can be achieved for example, by special rolling or embossing process. Also one Abrasive machining comes with suitable tools for this purpose.
  • Fig. 2 honeycomb pattern is shown only by way of example. Of course, other patterns come into consideration.
  • FIG. 6 shows alternatively schematically in bottom view a third embodiment, in which the bulges 30 also directly to each other are arranged adjacent and touch each other in some areas 34 and in overlap other areas 34 '.
  • the radius of the circular arc sections 31 of the bulges 30 and the Radius of the circular arc sections 33 of the recesses 32 depends directly with the focal length of the trained as a converging lens micro-lens 27th together.
  • the radii of curvature are therefore in adaptation to the geometry the lamp selected.
  • the distance of the light source plays 15 to the lens plate 18 in the context of a special role.
  • the dimming angle ⁇ is determined by these variables.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
EP03020319A 2002-09-11 2003-09-09 Leuchte zur Erzielung eines scharfkantig ausgebildeten Lichtkegels Withdrawn EP1398562A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10242441 2002-09-11
DE10242441A DE10242441A1 (de) 2002-09-11 2002-09-11 Leuchte

Publications (1)

Publication Number Publication Date
EP1398562A1 true EP1398562A1 (de) 2004-03-17

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EP03020319A Withdrawn EP1398562A1 (de) 2002-09-11 2003-09-09 Leuchte zur Erzielung eines scharfkantig ausgebildeten Lichtkegels

Country Status (4)

Country Link
US (1) US7121693B2 (ja)
EP (1) EP1398562A1 (ja)
JP (1) JP2004103591A (ja)
DE (1) DE10242441A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005050087A1 (de) * 2003-11-21 2005-06-02 Zumtobel Staff Gmbh Leuchte mit transparentem lichtaustrittselement
WO2015090706A1 (en) * 2013-12-16 2015-06-25 Koninklijke Philips N.V. Flexible unobstructed beam shaping.

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US7224529B2 (en) * 2003-09-09 2007-05-29 3M Innovative Properties Company Microreplicated article
US20050231809A1 (en) * 2003-09-09 2005-10-20 Carlson Daniel H Microreplicated polarizing article
US7804649B2 (en) 2003-09-09 2010-09-28 3M Innovative Properties Company Microreplicated achromatic lens
US7165959B2 (en) * 2003-09-09 2007-01-23 3M Innovative Properties Company Apparatus and method for producing two-sided patterned webs in registration
JP4789175B2 (ja) * 2005-02-25 2011-10-12 株式会社エンプラス 面光源装置及び表示装置
BRPI0608856A2 (pt) * 2005-03-09 2010-02-02 3M Innovative Properties Co artigo microrreplicado, método de produzir um artigo microrreplicado e monitor óptico
ATE496706T1 (de) * 2005-03-09 2011-02-15 3M Innovative Properties Co Vorrichtung und verfahren zur herstellung eines mikroreplizierten gegenstandes
DE602006005638D1 (de) * 2005-03-09 2009-04-23 3M Innovative Properties Co Vorrichtung und verfahren zur herstellung eines mikroreplizierten artikels
WO2006098940A1 (en) * 2005-03-09 2006-09-21 3M Innovative Properties Company Microreplicated article with moire reducing surface
MX2007010858A (es) * 2005-03-09 2007-11-12 3M Innovative Properties Co Aparato y metodo para producir una trama configurada de dos lados en el registro.
WO2006098938A1 (en) * 2005-03-09 2006-09-21 3M Innovative Properties Company Microreplicated article and method for the production thereof
US7483215B2 (en) * 2006-08-28 2009-01-27 Genie Lens Technologies, Llc Reflective imaging assembly for displaying interlaced images
EP2019255A3 (de) * 2007-07-26 2013-03-20 ERCO GmbH Leuchte zur Ausleuchtung einer Fläche in einem Gebäude
CN101424752A (zh) * 2007-10-31 2009-05-06 富士迈半导体精密工业（上海）有限公司 光学透镜及光源模组
CN101424384B (zh) * 2007-10-31 2011-05-04 富士迈半导体精密工业（上海）有限公司 光罩及采用该光罩的照明装置
CN101457901B (zh) * 2007-12-14 2010-09-29 富士迈半导体精密工业（上海）有限公司 光场调节装置及采用该光场调节装置的照明装置
CN103672728B (zh) * 2012-09-13 2017-09-08 赛尔富电子有限公司 透镜、led模组及使用该led模组的照明系统
JP6857847B2 (ja) * 2017-05-30 2021-04-14 パナソニックＩｐマネジメント株式会社 レンズ及び照明器具
JP2022141058A (ja) * 2021-03-15 2022-09-29 オムロン株式会社 表示切替装置

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US3735124A (en) * 1971-08-05 1973-05-22 Emerson Electric Co Prismatic lenses for lighting fixtures
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EP0738904A1 (en) * 1995-04-19 1996-10-23 MAGNETI MARELLI S.p.A. Adaptive illumination device, in particular vehicle headlight
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US6033094A (en) * 1997-10-02 2000-03-07 Fresnel Technologies, Inc. Microlens array for improved illumination patterns
EP0999407A2 (en) * 1998-11-05 2000-05-10 Automotive Lighting Italia Spa Double headlamp adaptive device for motor-vehicles, with microlens matrices

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Publication number Priority date Publication date Assignee Title
US3735124A (en) * 1971-08-05 1973-05-22 Emerson Electric Co Prismatic lenses for lighting fixtures
US5521725A (en) * 1993-11-05 1996-05-28 Alliedsignal Inc. Illumination system employing an array of microprisms
EP0738904A1 (en) * 1995-04-19 1996-10-23 MAGNETI MARELLI S.p.A. Adaptive illumination device, in particular vehicle headlight
EP0846914A1 (en) * 1996-12-05 1998-06-10 C.R.F. Società Consortile per Azioni Lighting device for generating a rectangular pattern at the work area, e.g. for illuminating pedestrian crossings
US6033094A (en) * 1997-10-02 2000-03-07 Fresnel Technologies, Inc. Microlens array for improved illumination patterns
EP0999407A2 (en) * 1998-11-05 2000-05-10 Automotive Lighting Italia Spa Double headlamp adaptive device for motor-vehicles, with microlens matrices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005050087A1 (de) * 2003-11-21 2005-06-02 Zumtobel Staff Gmbh Leuchte mit transparentem lichtaustrittselement
WO2015090706A1 (en) * 2013-12-16 2015-06-25 Koninklijke Philips N.V. Flexible unobstructed beam shaping.

Also Published As

Publication number Publication date
US20040085771A1 (en) 2004-05-06
DE10242441A1 (de) 2004-04-01
JP2004103591A (ja) 2004-04-02
US7121693B2 (en) 2006-10-17

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