EP1009903B1 - Procede de production d'un element pour eclairer des locaux - Google Patents

Procede de production d'un element pour eclairer des locaux Download PDF

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Publication number
EP1009903B1
EP1009903B1 EP98951334A EP98951334A EP1009903B1 EP 1009903 B1 EP1009903 B1 EP 1009903B1 EP 98951334 A EP98951334 A EP 98951334A EP 98951334 A EP98951334 A EP 98951334A EP 1009903 B1 EP1009903 B1 EP 1009903B1
Authority
EP
European Patent Office
Prior art keywords
solvent
plate
light
production
daylight
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
EP98951334A
Other languages
German (de)
English (en)
Other versions
EP1009903A1 (fr
Inventor
Walter DÖLL
Laszlo KÖNCZÖL
Andreas Gombert
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.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Publication of EP1009903A1 publication Critical patent/EP1009903A1/fr
Application granted granted Critical
Publication of EP1009903B1 publication Critical patent/EP1009903B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S11/00—Non-electric lighting devices or systems using daylight
    • F21S11/007—Non-electric lighting devices or systems using daylight characterised by the means for transmitting light into the interior of a building

Definitions

  • the invention relates to a method for producing an element for illuminating rooms by directing daylight, with an optically transparent base body through which the light falls into the respective room.
  • Good daylight lighting is very important in people's working and living environments. Daylight, better than that used in conventional windows, would not only result in an increase in well-being and work productivity, but also considerable energy savings. Architects and lighting designers are increasingly trying to take these facts into account through various measures.
  • Prism elements are currently used as such light or window elements, holographic systems or the like.
  • it is a sun protection device from DE 195 38 651 A1 made of a material which is transparent to sunlight and which is flat and has a smooth surface that is exposed to light is irradiated.
  • the underside has at least one prism-like contour on which cross section each has an approximately right-angled triangle.
  • the invention has for its object a method for manufacturing of an element for lighting rooms by directing Daylight indicate that the manufacture of the elements is inexpensive allows.
  • Crazes are flat, wedge-shaped Deformation centers with a change in refractive index compared to that Base material, as it is produced in particular in glass-like thermoplastics can be.
  • Crazes i.e. flat wedge-shaped deformation centers, arise local voltage increases, such as at crack tips occur. They have the macroscopic appearance of small cracks and broad ones like this perpendicular to the main tension direction.
  • the refractive index compared the index of the polymer base material is reduced, and at the same time the transition base material / crack is sharp, so that you get total reflections on the crazes, which receives additional light through the window pane direct the room to be illuminated.
  • thermoplastic can be polymethyl methacrylate (PMMA).
  • PMMA polymethyl methacrylate
  • other polymers such as polystyrene and polycarbonate can also be used etc. are used as long as they are transparent, and in them the invention provided structures for initiating additional Light can be generated in the respective room.
  • an element for Lighting of rooms by directing (additional) daylight becomes a plate-shaped base body made of a polymer Suspended tensile stress, which is applied parallel to the plate surface.
  • the plate surface additionally with a solvent and in particular an organic solvent is applied.
  • the application of voltage and possibly a solvent can preferably take place at elevated temperature.
  • the method according to the invention is also suitable for processing Endless material:
  • a bending device is used through which the plate material is pushed through as continuous material.
  • Fig. 1 shows a room 1, which is illuminated by a window 2.
  • the Window 2 has a transparent element or a pane 3, the or that for one - compared to conventional windows - additional Illumination by directing daylight 4 into the room provides.
  • the disc 3 - as the detail enlargement A shows - a large number of structures 5 on which additional daily or Sunlight 4 is deflected into room 1 by total reflection 6.
  • Fig. 2 shows an inventive method for producing the invention provided structures 5:
  • a tensile stress 6 created, which acts parallel to the surface of the disc 3.
  • a solvent and in particular an organic solvent and optionally one exposed to elevated temperature are preferably a polymer, preferably a glass-like thermoplastic, for example polymethyl methacrylate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Claims (5)

  1. Procédé de fabrication d'un élément pour éclairer des locaux par déviation ciblée de la lumière du jour,
        caractérisé en ce qu'un corps de base en forme de plaque en polymère est soumis à un effort de traction parallèlement à la surface de la plaque, qui provoque la formation de fendillements, c'est-à-dire de centres de déformation en forme de coins plats dont l'indice de réfraction diffère de celui du matériau de base.
  2. Procédé selon la revendication 1, caractérisé en ce que pendant l'application de l'effort de traction, la surface de la plaque est également aspergée d'un solvant.
  3. Procédé selon la revendication 2, caractérisé en ce que le solvant est un solvant organique.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que l'effort de traction et éventuellement l'aspersion de solvant s'effectuent à chaud.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce qu'il utilise, pour exercer l'effort de traction, un dispositif de cintrage à travers lequel défile le matériau en plaque, qui se présente sous la forme d'une bande de matériau continue.
EP98951334A 1997-08-31 1998-08-31 Procede de production d'un element pour eclairer des locaux Expired - Lifetime EP1009903B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19737904A DE19737904A1 (de) 1997-08-31 1997-08-31 Element zur Beleuchtung von Räumen durch gezieltes Lenken von Tageslicht sowie Verfahren zur Herstellung eines derartigen Elements
DE19737904 1997-08-31
PCT/EP1998/005519 WO1999011898A1 (fr) 1997-08-31 1998-08-31 Element pour eclairer des locaux par guidage cible de la lumiere du jour et procede de production d'un tel element

Publications (2)

Publication Number Publication Date
EP1009903A1 EP1009903A1 (fr) 2000-06-21
EP1009903B1 true EP1009903B1 (fr) 2002-10-23

Family

ID=7840686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98951334A Expired - Lifetime EP1009903B1 (fr) 1997-08-31 1998-08-31 Procede de production d'un element pour eclairer des locaux

Country Status (4)

Country Link
EP (1) EP1009903B1 (fr)
AT (1) ATE226681T1 (fr)
DE (2) DE19737904A1 (fr)
WO (1) WO1999011898A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10207564C1 (de) * 2002-02-22 2003-11-20 Fraunhofer Ges Forschung Vorrichtung zur Lichtlenkung aus wenigstens einem teiltransluzentem Flächenmaterial
DK176229B1 (da) 2002-06-18 2007-03-26 Photosolar Aps Optisk element til afskærmning af lys
TWI499745B (zh) * 2012-12-06 2015-09-11 光引導系統及天花板結構
JP2015197500A (ja) * 2014-03-31 2015-11-09 日東電工株式会社 光学フィルム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4003923A1 (de) * 1990-02-09 1991-08-14 Andreas Laurenz Licht-streukoerper
DE69429113T2 (de) * 1993-05-04 2002-07-25 Redbus Serraglaze Ltd., Knowle Zur verwendung in der verglasung geeignetes optisches bauelement
DE19538651B4 (de) * 1995-10-17 2004-07-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Sonnenschutzvorrichtung aus einem für Sonnenlicht transparenten Material

Also Published As

Publication number Publication date
ATE226681T1 (de) 2002-11-15
DE19737904A1 (de) 1999-03-11
WO1999011898A1 (fr) 1999-03-11
DE59806068D1 (de) 2002-11-28
EP1009903A1 (fr) 2000-06-21

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