EP1866678A1 - Élément de paroi translucide et véhicule à moteur comprenant un tel élément - Google Patents

Élément de paroi translucide et véhicule à moteur comprenant un tel élément

Info

Publication number
EP1866678A1
EP1866678A1 EP06711077A EP06711077A EP1866678A1 EP 1866678 A1 EP1866678 A1 EP 1866678A1 EP 06711077 A EP06711077 A EP 06711077A EP 06711077 A EP06711077 A EP 06711077A EP 1866678 A1 EP1866678 A1 EP 1866678A1
Authority
EP
European Patent Office
Prior art keywords
plate
light
wall element
translucent wall
translucent
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Withdrawn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
EP06711077A
Other languages
German (de)
English (en)
Inventor
Augustinus G. H. Meijers
Johannes P. M. Ansems
Ludo Haenen
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Priority to EP06711077A priority Critical patent/EP1866678A1/fr
Publication of EP1866678A1 publication Critical patent/EP1866678A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2369/00—Polycarbonates

Definitions

  • Translucent wall element and motor vehicle comprising such an element
  • the invention relates to a translucent wall element comprising a first plate-like member of a transparent material and a second plate-like member of a translucent material positioned at an outer/first side of said first plate-like member substantially parallel to said first plate-like member.
  • a translucent wall element may be a part of a wall of an enclosed room in which persons may be present, or a part of a roof of a passenger compartment of a motor vehicle.
  • An inner/second side of the translucent wall element is the side lacing the inside of the passenger compartment or room, and the second side of the translucent wall element is the other side, for example, facing the open air outside.
  • a translucent wall element comprising two or more translucent plate-like members, together forming a sandwich structure, is a customary translucent wall element for the passenger compartment of a motor vehicle.
  • a sandwich structure may comprise three layers, an outer layer and an inner layer, both being plate-like members of glass, and a layer of plastic material, for example, polyvinyl butyral (PVB) may be present between these plate-like members of glass.
  • the glass plate-like members have a normal thickness of 2.1 mm, and the PVB layer has a normal thickness of 0.5 mm, so that the wall element has a total thickness of, for example, 4.7 mm.
  • the roof of the passenger compartment can be provided with such a translucent wall element, so that light radiation can enter the passenger compartment from above.
  • the transmission of light can be reduced by means of a coating at the outer side of the second plate-like member (the outer glass plate), or by making use of low-transmission glass. Such a reduction of light transmission may be desired to prevent direct radiation of sunlight entering the passenger compartment of the motor vehicle.
  • Light is coupled into the light-guiding element through one or more lateral surfaces at the edge of the light-guiding element, and light is emitted through the large inner surface (front surface) of the light-guiding element into the passenger compartment of the motor vehicle in a homogeneous manner.
  • means for coupling light into said first plate-like member are present, in particular at one or more lateral surfaces of said first plate-like member, while the surface of said first plate-like member is provided with spots of light- distribution means at the side facing the second plate-like member (first side), which light- distribution means direct light radiation towards the other side (the inner side) across said first plate-like member so as to couple out light radiation through the surface at the inner side of the first plate-like member of the translucent wall element.
  • Appropriate materials for the light-guiding first plate-like member are transparent thermoplastics, in particular polyvinyl butyral (PVB), or polymethyl methacrylate (PMMA), or polycarbonate (PC). Also glass can be used as a light-guiding material, in which, preferably, Fe 2 O 3 is removed from the glass material.
  • PVB polyvinyl butyral
  • PMMA polymethyl methacrylate
  • PC polycarbonate
  • glass can be used as a light-guiding material, in which, preferably, Fe 2 O 3 is removed from the glass material.
  • the material of said second plate-like member is glass which is preferably provided with means for reducing light transmission through it, for example, a coating at its outer surface or light-absorbing material in the glass.
  • a second plate-like member protects the first side of the first plate-like member against scratches and other damage, and the light-transmission reducing means decrease the transmission of daylight, and, in particular, the transmission of direct radiation of sunlight.
  • said light-distribution means are spots of reflecting material on the outer surface of the first plate-like member. Such spots of reflecting material may be dots of white paint, or dots of a material comprising a metal, etc. These spots can be applied easily on the outer surface of the first plate-like member.
  • said light-distribution means are rugged spots on the first side of the first plate-like member.
  • no material is applied on the outer surface, but the outer surface is locally treated by means of a material-removing operation or, preferably, by means of a melting operation, wherein a small portion of the material at the outer surface of the first plate-like member is melted by means of, for example, a laser beam.
  • said light-distribution means are recesses, each having an inner surface which is inclined with respect to the plane of the first plate- like member.
  • Such inclined surfaces reflect the light radiation in the light-guiding first plate-like member in such directions that at least a portion of the reflected light radiation will be coupled out through the second side of said first plate-like member, so that it is radiated into the interior of the room or into the passenger compartment of the motor vehicle.
  • the recesses may have any shape mainly having surfaces which are inclined with respect to the second side of the first plate-like member, but preferably the shape of cones or pyramids. If the material of the first plate-like member is a thermoplastic shaped by means of, for example, an injection molding process, such recesses in the outer surface can be easily made in this process.
  • the light-distribution means at the surface of the first plate-like member are covered with spots of a material which is opaque to visible light so as to further reduce light radiation from the first plate-like member to the first side of the translucent wall element.
  • spots are preferably slightly larger than the light-distribution means, so that they cover the whole light-distribution means and its edge area.
  • the material of said spots is preferably reflective at its surface abutting the first plate-like member, so that light radiation is reflected back into the first plate-like member and can be coupled out at the other side of this member, and increases the radiation into the interior of the room or into the passenger compartment of the motor vehicle, as the case may be.
  • Said material of said spot is preferably a metal, more preferably, aluminum.
  • a cladding i.e. a layer of a cladding material, is present between said first plate-like member and said second plate-like member.
  • the cladding preferably has a thickness of at least about 1.5 ⁇ m, i.e. about twice the wavelength of light.
  • Such a cladding material has a relatively low index of refraction, which is substantially lower than the index of refraction of the material of the first plate-like member, so that an effective reflection of light radiation, which is guided in the first plate- like member, is ensured, and such a reflection will not be affected by optical contact of the surface of the first plate-like member with other objects.
  • a third translucent plate-like member preferably made of glass, is present at the second side of said first plate-like member substantially parallel to said first plate-like member, while a layer of a cladding material is preferably present between said first plate-like member and said third plate-like member.
  • the translucent wall element preferably comprises two plates of glass (the second and the third plate-like members) with a light-guiding member (first plate-like member) in between and the light-distribution means at its outer surface, wherein a layer of a cladding material is present at each side of the light-guiding member.
  • the invention also relates to a motor vehicle having a passenger compartment, wherein the roof of the passenger compartment is provided with a translucent wall element comprising a first plate-like member of a transparent material and a second plate-like member of a translucent material positioned at the first side of said first plate-like member substantially parallel to said first plate-like member, wherein means for coupling light into said first plate-like member are present, and wherein the surface of said first plate-like member is provided with spots of light-distribution means at the side facing the second plate- like member, which light-distribution means direct light radiation towards the second side of said first plate-like member.
  • Fig. 1 is a sectional view of a part of a first embodiment of a translucent wall element
  • FIG. 2 is an enlarged representation of a portion of Figure 1; and Fig. 3 is a sectional view of a part of a second embodiment of a translucent wall element.
  • Figures 1 and 2 represent diagrammatically a small portion of the first embodiment of a translucent wall element comprising a first plate-like member 1 made of a transparent material having a relatively high index of refraction, i.e. higher than air and higher than the surrounding materials that make optical contact with the first plate-like member 1, so that light radiation can be coupled into, and guided in, the transparent material of the first plate-like member 1.
  • the light radiation can be coupled in through the lateral surfaces at the edges of the first plate-like member 1 (not shown in the Figures), and reflects against both the first side 20 and the second side 21 of the first plate-like member 1, so that it will be kept and guided in the transparent material of the first plate-like member 1, as is well known in the prior art.
  • the transparent material of the first plate-like member 1 is, for example, polyvinyl butyral (PVB). This material has an index of refraction of about 1.485, which is substantially equal to the index of refraction of glass, which is about 1.50.
  • Plate-like members 2, 3 of glass are present at the first respectively the second side of, and parallel to, the first plate-like member 1.
  • Second plate-like member 2 is present at the first side 20 (the upper side in the Figures) of the first plate-like member 1
  • third plate-like member 3 is present at the second side 21 (the lower side) of the first plate-like member 1.
  • the first plate-like member 1 and the second and third plate-like members 2, 3 enclose claddings 4, 5, i.e.
  • a cladding material having a relatively low index of refraction which is substantially lower than the index of refraction of the material of the first plate-like member 1, so that an effective reflection of light radiation, which is guided in the first plate-like member 1, is ensured, and such a reflection will not be affected by optical contact of the surface of the first plate-like member with other objects.
  • the claddings 4, 5 have to make optical contact with the first plate-like member 1.
  • Such a cladding material is, for example, transparent silicone rubber, which also functions as an adhesive, keeping the plate-like members 1, 2, 3 together, so that a firm sandwich structure of the translucent wall element is obtained.
  • Light radiation for example, light ray 6, which is guided by the first plate-like member 1, will be reflected at the surface 7 of the plate-like member 1, provided that its angle of incidence is larger than a given value, which value depends on the indexes of refraction of the materials of the first plate-like member 1 and the material of the claddings 4, 5.
  • the angle of incidence of the light ray 6 is equal to the angle of reflection of this light ray 6.
  • light distribution means i.e. spots 8 for example, dots of white paint
  • spots 8 for example, dots of white paint
  • the white paint of the dots 8 makes optical contact with the material of the first plate-like member 1, so that a light ray 9 that reaches such a dot 8 of white paint will not be reflected at an angle equal to the angle of incidence, but will be scattered into all directions.
  • Light radiation will then be coupled out, mainly at the inner side 21 (the lower side in the Figures) of the first plate-like member 1. Such light radiation will pass through the third plate-like member 3 and leave the translucent wall element at its inner side (the lower side in the Figures).
  • the dots 8 comprise only a thin layer of white paint, some light radiation scattered from it may also be directed upwards (in the Figure).
  • spots of a thin layer 10 of aluminum cover the dots 8 at the upper side.
  • the layer 10 of aluminum is opaque to light radiation and reflects the light radiation downwards, so that it increases the efficiency of the light radiation from the inner side (lower side) of the translucent wall element.
  • the second plate-like member 2 may be grayish and light-absorbing so as to keep too much sunlight out of the passenger compartment of the vehicle during daytime.
  • Figure 3 represents a portion of the translucent wall element in said second embodiment.
  • First plate-like member 11 made of, for example, polycarbonate (PC), is positioned between second plate-like member 12 and third plate-like member 13, both made of glass.
  • Layers 14, 15 of a cladding material are present between the first plate-like member 11 and the second and third plate-like members 12, 13.
  • the surface of the outer side of first plate-like member 11 is provided with recesses 16, each recess 16 having a pyramidal shape, with all surfaces of the recess being inclined with respect to the plane of the first plate-like member 11.
  • the recesses 16 may be filled with air or another gas, as is shown in Figure 3, but they may also be filled with the cladding material of layer 14.
  • light radiation can be coupled into said first plate-like member 11, and when such light radiation is reflected by the inclined surface of one of the recesses 16, at least a part of it will be directed downwards (in Figure 3), so that it leaves the first plate-like member 11 and the translucent wall element after it has passed through the transparent cladding 15 and the transparent third plate-like member 13.
  • the outer side of the second plate-like member 12 is provided with a coating 17 of a light-absorbing material so as to reduce the light transmission through the translucent wall element.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Body Structure For Vehicles (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

Élément de paroi translucide comprenant un premier élément en forme de plaque (1) en matière transparente et un second élément en forme de plaque (2) en matière translucide placé du côté extérieur dudit premier élément en forme de plaque (1) et sensiblement parallèle audit premier élément en forme de plaque. Des moyens sont prévus pour amener de la lumière dans ledit premier élément en forme de plaque. La surface (7) dudit premier élément en forme de plaque (1), du côté faisant face au second élément en forme de plaque (2), est pourvue de points de moyens de répartition lumineuse (8). Les moyens de répartition lumineuse (8) dirigent les radiations lumineuses vers l'autre côté dudit premier élément en forme de plaque (1).
EP06711077A 2005-03-31 2006-03-10 Élément de paroi translucide et véhicule à moteur comprenant un tel élément Withdrawn EP1866678A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06711077A EP1866678A1 (fr) 2005-03-31 2006-03-10 Élément de paroi translucide et véhicule à moteur comprenant un tel élément

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP05102548 2005-03-31
EP06711077A EP1866678A1 (fr) 2005-03-31 2006-03-10 Élément de paroi translucide et véhicule à moteur comprenant un tel élément
PCT/IB2006/050758 WO2006103575A1 (fr) 2005-03-31 2006-03-10 Élément de paroi translucide et véhicule à moteur comprenant un tel élément

Publications (1)

Publication Number Publication Date
EP1866678A1 true EP1866678A1 (fr) 2007-12-19

Family

ID=36608614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06711077A Withdrawn EP1866678A1 (fr) 2005-03-31 2006-03-10 Élément de paroi translucide et véhicule à moteur comprenant un tel élément

Country Status (6)

Country Link
US (1) US20080190071A1 (fr)
EP (1) EP1866678A1 (fr)
JP (1) JP2008537516A (fr)
KR (1) KR20070118159A (fr)
CN (1) CN101151560A (fr)
WO (1) WO2006103575A1 (fr)

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
EP1973762A1 (fr) * 2006-01-06 2008-10-01 PILKINGTON Automotive Deutschland GmbH Vitrage de véhicule avec ensemble de guidage de lumière
FR2908406B1 (fr) * 2006-11-14 2012-08-24 Saint Gobain Couche poreuse, son procede de fabrication et ses applications.
EP2635433B1 (fr) * 2010-11-03 2017-01-11 AGC Glass Europe Panneau éclairant diffus de plaques de verre inorganique et organique stratifiées
US11167531B2 (en) * 2019-08-30 2021-11-09 Pittsburgh Glass Works, Llc Glazing with a light guide laminate stack
CN111516322A (zh) * 2020-03-31 2020-08-11 东莞泰升玻璃有限公司 一种透光不透视夹层玻璃的制作方法
DE102022125441A1 (de) * 2022-10-01 2024-04-04 polyscale GmbH & Co. KG Optische Einheit zum Abstrahlen von Licht und Verfahren zur Herstellung einer optischen Einheit

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US5079675A (en) * 1990-11-08 1992-01-07 Deilaito Co., Ltd. Surface illuminating apparatus
US5349503A (en) * 1991-12-31 1994-09-20 At&T Bell Laboratories Illuminated transparent display with microtextured back reflector
US6473220B1 (en) * 1998-01-22 2002-10-29 Trivium Technologies, Inc. Film having transmissive and reflective properties
AU4548500A (en) * 1999-04-13 2000-11-14 Glaverbel Glazing for the roof of a motor vehicle
DE10204359B4 (de) * 2001-03-25 2005-05-04 Webasto Ag Fahrzeugdach
DE10123263B4 (de) * 2001-05-12 2005-12-08 Daimlerchrysler Ag Lichtleitsystem für den Innenraum eines Kraftfahrzeugs
DE10126868C1 (de) * 2001-06-01 2002-11-21 Saint Gobain Sekurit D Gmbh Scheibe mit einer opaken Beschichtung
NL1024395C2 (nl) * 2003-09-29 2005-03-31 Fivado Beheer B V Belichtingsstelsel, lichtkamer en weergeefinrichting.
JP2005301016A (ja) * 2004-04-14 2005-10-27 Yowa:Kk 液晶表示装置バックライト用導光板

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See references of WO2006103575A1 *

Also Published As

Publication number Publication date
KR20070118159A (ko) 2007-12-13
WO2006103575A1 (fr) 2006-10-05
CN101151560A (zh) 2008-03-26
JP2008537516A (ja) 2008-09-18
US20080190071A1 (en) 2008-08-14

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