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WO1997019372A1 - Plaques guides de lumiere - Google Patents

Plaques guides de lumiere Download PDF

Info

Publication number
WO1997019372A1
WO1997019372A1 PCT/DE1996/002034 DE9602034W WO9719372A1 WO 1997019372 A1 WO1997019372 A1 WO 1997019372A1 DE 9602034 W DE9602034 W DE 9602034W WO 9719372 A1 WO9719372 A1 WO 9719372A1
Authority
WO
WIPO (PCT)
Prior art keywords
plastic
light guide
guide plates
plates according
light
Prior art date
Application number
PCT/DE1996/002034
Other languages
German (de)
English (en)
Inventor
Volker Benz
Michael Meier-Kaiser
Michael Müller
Original Assignee
Röhm 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 Röhm Gmbh filed Critical Röhm Gmbh
Priority to DE19680995T priority Critical patent/DE19680995D2/de
Priority to AU76200/96A priority patent/AU7620096A/en
Publication of WO1997019372A1 publication Critical patent/WO1997019372A1/fr

Links

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
    • F21S11/00—Non-electric lighting devices or systems using daylight
    • 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
    • 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
    • E06B2009/2417—Light path control; means to control reflection

Definitions

  • the invention relates to light guide plates made of transparent plastic which serve to better illuminate rooms by means of daylight
  • FIG. 1 represents a typical interior. The following reference numerals apply to FIG.
  • FIG. 2 shows the room depicted in FIG. 1 now equipped with the light-guiding element according to the invention in part of the window area.
  • the reference symbol LLP stands for the light-guide plate. The remaining reference symbols correspond to those in FIG. 1
  • thin bands made of a plastic B with the refractive index ne, are preferably extruded, with the proviso that ⁇ A is more wet, or that plastic B and plastic A have separated from one another by a separating gap.
  • the light-guiding effect can be achieved by means of both features, which are different per se.
  • the separating surface of the materials or the material transition is accordingly either noticeable only as a result of the difference in the refractive indices or is - when formed the separation gap - very clearly recognizable as a reflecting surface
  • the strips made of plastic B can be arranged both perpendicular to the plate surface and at an angle ⁇ ⁇ 90 ° to the plate surface
  • the incident light beam passes through the boundary surface. Since the preferred production mode of the light guide plates LLP is the coextrusion of the plate together with the thin strips inserted, there are primarily coextrusion-capable, transparent thermoplastics, whereby the above-mentioned condition >A> ne must be observed.
  • the difference ⁇ n is preferably at least 0.05. The greater the refractive index difference, the greater is the critical angle ⁇ G and thus the effectiveness of the system. A sufficient effectiveness of the system even at small critical angles ⁇ G can be achieved by tilting the plastic bands ( ⁇ ⁇ 90 °). By tilting the bands, the angle of incidence is reduced to the boundary surface ⁇ E (case II in Fig. 4)
  • Plastics A of this type Polymers such as polymethyl methacrylate (PMMA and copolymers) or polycarbonate (PC) can be used as plastics A of this type, while plastics B - provided that plastic A consists of polycarbonate - can also be fluorinated polymers as PMMA
  • the refractive index of plastic A can preferably be higher, but also the same or lower than that of plastic B total reflection caused by the separation point is strong enough to produce an impressive light-guiding effect.
  • the width of the separation gap must be greater than 1 ⁇ m
  • the thickness of the light guide plates LLP is generally in the range from 2 to 20 mm.
  • the inserted, preferably extruded, strips from the plastic B generally have a thickness of 0.05-0.5 mm and a width of 50 to 95% based on the Thickness of the plate consisting of A
  • the strips of plastic B are regularly arranged in the plastic plates A at mutual distances of 2 to 40 mm
  • the other dimensions of the light guide plates LLP are expediently adapted to the glazing units, in particular the window or door formats. A limitation of the dimensions due to the extrusion technology used is generally not to be expected
  • the light guide plates according to the invention can be successfully used to better illuminate rooms, including workshops, halls, basements, vaults, shafts, and possibly also vehicles such as ships. Their use can not only contribute to energy savings but also to better ergonomic design of work spaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Planar Illumination Modules (AREA)

Abstract

L'invention concerne des plaques guides de lumière en plastique transparent. Entre les plaques constituées d'un plastique transparent A, sont insérées plusieurs bandes fines de plastique B, les plastiques A et B se distinguant par leur indice de réfraction ou leur coefficient de dilatation thermique.
PCT/DE1996/002034 1995-11-23 1996-10-25 Plaques guides de lumiere WO1997019372A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19680995T DE19680995D2 (de) 1995-11-23 1996-10-25 Lichtleitplatten
AU76200/96A AU7620096A (en) 1995-11-23 1996-10-25 Light-directing panels

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19543687 1995-11-23
DE19543687.3 1995-11-23

Publications (1)

Publication Number Publication Date
WO1997019372A1 true WO1997019372A1 (fr) 1997-05-29

Family

ID=7778227

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1996/002034 WO1997019372A1 (fr) 1995-11-23 1996-10-25 Plaques guides de lumiere

Country Status (3)

Country Link
AU (1) AU7620096A (fr)
DE (1) DE19680995D2 (fr)
WO (1) WO1997019372A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU8706691A (en) * 1990-11-06 1992-05-14 Sam Peter Paolino Glazing panel and method of manufacture
US5217794A (en) * 1991-01-22 1993-06-08 The Dow Chemical Company Lamellar polymeric body
WO1994025792A2 (fr) * 1993-05-04 1994-11-10 Milner Peter J Composant optique conçu pour etre utilise dans le vitrage
DE4326232A1 (de) * 1993-08-05 1995-02-09 Roehm Gmbh Kunststoff-Verbunde aus unverträglichen Kunststoffen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU8706691A (en) * 1990-11-06 1992-05-14 Sam Peter Paolino Glazing panel and method of manufacture
US5217794A (en) * 1991-01-22 1993-06-08 The Dow Chemical Company Lamellar polymeric body
WO1994025792A2 (fr) * 1993-05-04 1994-11-10 Milner Peter J Composant optique conçu pour etre utilise dans le vitrage
DE4326232A1 (de) * 1993-08-05 1995-02-09 Roehm Gmbh Kunststoff-Verbunde aus unverträglichen Kunststoffen

Also Published As

Publication number Publication date
DE19680995D2 (de) 1999-01-28
AU7620096A (en) 1997-06-11

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