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EP1709360B1 - Dispositif pour eclairer de grandes surfaces de maniere homogene ou predeterminable - Google Patents

Dispositif pour eclairer de grandes surfaces de maniere homogene ou predeterminable Download PDF

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Publication number
EP1709360B1
EP1709360B1 EP05706675A EP05706675A EP1709360B1 EP 1709360 B1 EP1709360 B1 EP 1709360B1 EP 05706675 A EP05706675 A EP 05706675A EP 05706675 A EP05706675 A EP 05706675A EP 1709360 B1 EP1709360 B1 EP 1709360B1
Authority
EP
European Patent Office
Prior art keywords
light
fresnel structure
illuminated
reflecting
collimated light
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.)
Expired - Lifetime
Application number
EP05706675A
Other languages
German (de)
English (en)
Other versions
EP1709360A1 (fr
Inventor
Matthias Stier
Werner Hoffman
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.)
Fresnel Optics GmbH
Original Assignee
Fresnel Optics 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 Fresnel Optics GmbH filed Critical Fresnel Optics GmbH
Publication of EP1709360A1 publication Critical patent/EP1709360A1/fr
Application granted granted Critical
Publication of EP1709360B1 publication Critical patent/EP1709360B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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
    • 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
    • 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
    • F21V7/04—Optical design
    • 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
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • 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
    • 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
    • F21W2131/10—Outdoor lighting
    • 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
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/402—Lighting for industrial, commercial, recreational or military use for working places

Definitions

  • the invention relates to an arrangement for uniform or predefinable illumination of large areas with a light source, wherein over the respective area a largely constant illuminance distribution is to be achieved.
  • a large-scale outdoor lighting but also in closed rooms can be achieved, so that it is suitable for example for the illumination of traffic or office space.
  • it can also be a desired predetermined illumination of certain surface areas of a surface to be illuminated, such as in particular outer edge regions of such a surface can be achieved.
  • edge radiation When illuminating surfaces with large aperture angles, where the edge radiation is emitted with angles of approx. 120 °, it occurs at the edges of To be illuminated surface areas to a significant drop in the illuminance levels achievable there.
  • document EP-A-0 735 311 shows an arrangement for illuminating interiors with large areas with a light source and with a Refelktierenden element whose surface has a structure.
  • the inventive arrangement for uniform or predetermined illumination of large areas wherein the respective large areas are always to be evaluated in relation to the size of the respective light source, or the light emitted from a light source light radiation, uses at least one reflective element, on which a Fresnel structure is formed and collimated light of the light source is reflected at the surface provided with the Fresnel structure.
  • a slight divergence can be tolerated and optionally also compensated by suitable measures on the reflective element.
  • an at least partially refractory Fresnel structure is formed on the at least one reflective element.
  • This Fresnel structure is formed of alternating alternating active edges, each with respect to the incident collimated Have light changing angle inclination.
  • incident collimated light is collected with an active edge oriented at an angle inclination, and the incident collimated light is scattered with the active edge adjacent to such an active flank and oriented in a respective other angle inclination.
  • such a Fresnel structure free of fringes should be formed at least in the radially outer region of such a reflective element with respect to the optical axis of the entire system or of the collimated light.
  • the reflective element to be used according to the invention should be formed from a material which is transparent to the respective light with a known refractive index and the outer surfaces of the Fresnel structure free from interference flare should be coated with a coating which reflects the respective light.
  • the actual reflective elements may consist of a suitable plastic, which can be processed for example by injection molding or conventional hot embossing.
  • the Fresnel structure according to the invention can also be formed exclusively from a correspondingly reflective material or, As already mentioned, such a reflective coating has been formed on a corresponding Fresnel structure free of flanks.
  • the distance A of the one or more reflective element (s) to the surface to be illuminated should be at least five times, preferably at least ten times as large as the diameter or area diagonal of the cross section of the respective collimated light incident on the respective or the mutually correspondingly arranged reflective (e) element (s) is directed to be.
  • one of the two active edges of an adjacent pair of oppositely oriented active edges arranged adjacent to one another, the function of a concave reflex (hollow mirror) and the respective other active edge fulfill the function of a convex mirror (mirror).
  • the active edge performing the function of a convex mirror scatters the light toward the outer edge of the surface to be illuminated, and the active surface performing the function of a concave mirror collects the light toward the focal point, but since the distances of the surface to be illuminated are kept relatively large, too the light reflected accordingly with such an active edge is actually scattered.
  • the images obtained by the respective differently oriented active surfaces by reflection on the surface to be illuminated are superimposed on the respective surface to be illuminated and equalization of the illuminance over the entire surface to be illuminated is achieved.
  • the light distribution takes place independently of the respective geometry of the light source or the beam geometry of the emitted light radiation from this, so that it can be spoken of an illumination in the so-called "far field".
  • the photometric limit distance of the photometric law of distance should be taken into account.
  • FIG. 1 an arrangement for illuminating large areas 5 is shown in schematic form.
  • collimated light 1 'of a light source 1 is directed onto a reflective element 2 provided with a Fresnel structure and reflected back from this in the direction of the surface 5 to be illuminated with a correspondingly large aperture.
  • FIG. 2 indicates how the collimated light of the light source 1 impinges on the active edges of a conventional Fresnel structure by the material of a reflective element, is reflected on the respective active edges in a radially outward angle and on the outer surface, as the angle of incidence Boundary surface of the reflective element is refracted accordingly.
  • FIG. 5 is intended to illustrate in schematic form the advantageous reflection behavior of a Fresnel structure free of disturbing edges on a reflective element 2 which can be used in the invention.
  • the respective reflected light is then correspondingly refracted on the opposite surface of the reflective element 2.
  • FIG. 5 clearly shows that the collimated light 1 'incident from the active surfaces 3 and 4 oriented at different angle inclinations is respectively reflected in opposite directions and additionally broken.
  • the respective light reflected on the active edges 3 and 4 and possibly additionally additionally refracted light will once in the direction of deflected the radially outer edge of the surface to be illuminated 5 and the other of the active surfaces 3 or 4 directs light in focused form to a corresponding focus and with a correspondingly large distance between the reflective element 2 and surface to be illuminated 5 on the focal point in the optical Axis is arranged, in the radially outer direction further outwards from, so that thereby the present invention desired effect of a uniform illuminance, which is to be achieved over the entire area to be illuminated 5 set.
  • the respective angles of inclination of active edges 3 and 4 of a Fresnel structure free of interference fringes can be adapted according to their distances with respect to the optical axis and correspondingly different angles of inclination of active surfaces 3 and 4 on the reflecting element are maintained become.
  • the surface of a reflecting element 2 into which the light exits and breaks again may also be concave and / or convexly curved at least in some areas .
  • the surface of a reflecting element 2 into which the light exits and breaks again may also be concave and / or convexly curved at least in some areas .
  • FIG. 6 shows, in three-dimensional form, a calculated illumination intensity distribution over an illuminated surface 5, which can be achieved with an example of an arrangement according to the invention.
  • the surface 5 to be illuminated considered here had a circular shape with a diameter of 7100 mm, with a distance of the surface from the reflecting element 2 of 2500 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Road Paving Structures (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (7)

  1. Dispositif pour l'éclairage homogène ou prédéterminable de grandes surfaces (5) comportant une source de lumière, d'où de la lumière collimatée (1') est dirigée sur au moins un élément réfléchissant (2) ayant une surface réfléchissante qui est conformée en structure de Fresnel,
    caractérisé en ce qu'est aménagée, au moins par zones, une structure de Fresnel sans flancs parasites avec des flancs actifs changeant en alternance (3, 4), qui présentent des inclinaisons angulaires changeant respectivement en fonction de la lumière incidente collimatée et, pour de la lumière incidente collimatée, tantôt un effet collecteur de lumière et tantôt un effet dispersant la lumière.
  2. Dispositif selon la revendication 1, caractérisé en ce qu'est aménagée une structure de Fresnel sans flancs parasites par rapport à l'axe optique au moins dans la zone radialement extérieure d'un élément réfléchissant (2).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la structure de Fresnel sans flancs parasites est formée sur la face arrière d'éléments réfléchissants (2).
  4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que sont disposés côte à côte plusieurs éléments réfléchissants (2) dans un plan en formant un réseau.
  5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la distance A du ou des éléments réfléchissants (2) à la surface à éclairer correspond au moins à cinq fois le diamètre ou la diagonale de surface de la section transversale de la lumière collimatée.
  6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'angle d'inclinaison respectif des flancs actifs agencés en alternance (3, 4) est modifié radialement vers l'extérieur en partant de l'axe optique.
  7. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la surface de l'élément réfléchissant, opposée à la structure de Fresnel sans flancs parasites, est bombée au moins par zones de manière concave et/ou convexe.
EP05706675A 2004-01-21 2005-01-10 Dispositif pour eclairer de grandes surfaces de maniere homogene ou predeterminable Expired - Lifetime EP1709360B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004004261A DE102004004261B3 (de) 2004-01-21 2004-01-21 Anordnung zur gleichmäßigen oder vorgebbaren Beleuchtung von großen Flächen
PCT/DE2005/000038 WO2005071310A1 (fr) 2004-01-21 2005-01-10 Dispositif pour eclairer de grandes surfaces de maniere homogene ou predeterminable

Publications (2)

Publication Number Publication Date
EP1709360A1 EP1709360A1 (fr) 2006-10-11
EP1709360B1 true EP1709360B1 (fr) 2007-08-22

Family

ID=34801133

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05706675A Expired - Lifetime EP1709360B1 (fr) 2004-01-21 2005-01-10 Dispositif pour eclairer de grandes surfaces de maniere homogene ou predeterminable

Country Status (4)

Country Link
EP (1) EP1709360B1 (fr)
AT (1) ATE371145T1 (fr)
DE (2) DE102004004261B3 (fr)
WO (1) WO2005071310A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007002438A1 (de) 2007-01-10 2008-07-17 Fresnel Optics Gmbh Beleuchtungselement mit reflektierender Fresnelstruktur
KR20120095437A (ko) * 2009-11-18 2012-08-28 램버스 인터내셔널 리미티드 발광다이오드를 이용한 내부 수집 반사 광학체
DE202012012012U1 (de) * 2012-12-13 2013-04-15 Yasin Altunok Deckenreflektor (Reflektor für die Raumdecke)
US9291340B2 (en) 2013-10-23 2016-03-22 Rambus Delaware Llc Lighting assembly having n-fold rotational symmetry
US10544919B2 (en) 2016-09-22 2020-01-28 Signify Holding B.V Optical arrangement, lighting system and illumination method
CN115291093B (zh) * 2022-05-27 2023-12-22 国网江苏省电力有限公司南通供电分公司 一种基于电压监视的断路器工作状态检测方法及系统

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5029060A (en) * 1990-07-17 1991-07-02 Minnesota Mining And Manufacturing Company Uniform intensity profile catadioptric lens
US5337221A (en) * 1992-01-14 1994-08-09 Musco Corporation Means and method for highly controllable lighting
EP0735311A1 (fr) * 1995-03-31 1996-10-02 Siemens Aktiengesellschaft Système d'éclairage intérieur
DE19740243C1 (de) * 1997-09-12 1999-02-11 Stn Atlas Elektronik Gmbh Optischer Sender zum Aussenden von Lichtsignalen
ATE516467T1 (de) * 2002-10-15 2011-07-15 Siteco Beleuchtungstech Gmbh Reflektor mit strukturierter oberfläche, sowie leuchte und sekundärbeleuchtungssystem mit einem solchen reflektor
WO2004097293A1 (fr) * 2003-04-30 2004-11-11 Lighting Innovation Center Ag Support destine a une lampe et tete de lampe comportant un support et un reflecteur

Also Published As

Publication number Publication date
EP1709360A1 (fr) 2006-10-11
DE102004004261B3 (de) 2005-09-01
ATE371145T1 (de) 2007-09-15
WO2005071310A1 (fr) 2005-08-04
DE502005001309D1 (de) 2007-10-04

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