EP0964112B1 - Transparent panel for building improving the natural brightness inside the building - Google Patents

Transparent panel for building improving the natural brightness inside the building Download PDF

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Publication number
EP0964112B1
EP0964112B1 EP99401403A EP99401403A EP0964112B1 EP 0964112 B1 EP0964112 B1 EP 0964112B1 EP 99401403 A EP99401403 A EP 99401403A EP 99401403 A EP99401403 A EP 99401403A EP 0964112 B1 EP0964112 B1 EP 0964112B1
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EP
European Patent Office
Prior art keywords
grooves
sheet
panel
glass
building
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
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EP99401403A
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German (de)
French (fr)
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EP0964112A1 (en
Inventor
Jean-Marc Halleux
Jean-Pierre Beaufays
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.)
Saint Gobain Glass France SAS
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
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Publication of EP0964112A1 publication Critical patent/EP0964112A1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/54—Slab-like translucent elements
    • 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

Definitions

  • the invention relates to a transparent panel intended to be mounted, particular, in a bay window of building and allowing to reorient the incident natural light rays so as to homogenize the luminosity at inside the building.
  • the invention will be described more particularly for a building window in which will be mounted the transparent panel so as to redirect the natural light rays incident to the ceiling of the premises of the said building, but the invention is not limited to this type of application, any type of opening made in a building and able to receive a transparent panel between also in the context of the invention.
  • a technique known to improve the level of natural light at the interior of a room is to divert the natural light rays incident by through a glazing so that at least some of these are reflect towards the ceiling of the room which reflects them to the interior of the room.
  • the means used to deflect the rays bright incidents through glazing consist either in the use of Prisms made of a transparent material that refract the incident light ray in the use of metal surfaces that reflect the light beam incident.
  • windows with a prismatic surface offer, as a window, a vision through said glazing which is deformed and the surface of the glazing which presents the series of prisms, is difficult to clean.
  • WO 94/25792 teaches an optical component comprising two elements planes on which are arranged elementary surfaces able to reflect and / or refract the incident light.
  • the present invention aims to provide a panel to be mounted, in particular, in a window bay of a building enabling the deflection of light rays incident at an angle greater than 45 ° in order to reorient the rays to the ceiling of the room and thus improve the brightness level to inside the room, offering a vision through it that is not distorted, which can be cleaned easily and can be implemented quickly and easily without finishing step of the surface state of the cuts.
  • the invention thus proposes a transparent panel according to claim 1.
  • the furrows present on the surface of the glass sheet are created by the creation cracks whose depth is controlled.
  • Their inner surface is optically smooth and thus allows total reflection of incident natural light rays.
  • the grooves are substantially perpendicular to the plane of the glass sheet.
  • the grooves are distributed uniformly over the surface of the glass sheet.
  • the glass sheet is part of a laminated panel and the depth of the grooves is equal to the thickness of the sheet of glass.
  • the furrows are made directly on the whole laminated and the depth of the laser cutting grooves is advantageously controlled by the presence of the interlayer of the laminated panel, the rest of the glass sheet being held in place thanks to the same interlayer.
  • the ratio of the depth of the furrows on the distance between two furrows is between 0.5 and 2 and, preferably, between 1 and 2. In this way, the number of spokes is optimized bright natural incidents that are going to be redirected.
  • the transparent panel is part of multiple insulation glazing.
  • the surface of the panel presenting the grooves is in contact with the gas strip of the multiple insulating glazing and is thus protected from dust and moisture.
  • such a variant makes it possible to to realize a multiple insulating glazing combining the insulating performances with the advantages of glazing improving the brightness of a room.
  • the transparent panel allows, as explained above, to deviate light rays incident at an angle greater than 45 ° so as to redirect the rays to the ceiling of the room and thus improve the level of brightness natural inside the premises.
  • Such a panel also makes it possible to obtain a vision through without deformations.
  • Figure 1 shows a portion of a vertical section of a panel 1 according to the invention.
  • the panel 1 consists of a glass sheet 2 on which a series of grooves 3 has been made by a laser cutting technique such as, for example, by the technique described in the European patent EP-B -0,633,867.
  • the grooves 3 have, for example, a depth of 0.8 mm for a total thickness of the glass sheet 2 of 2 mm.
  • the grooves 3 are arranged horizontally in relation to the general plane of the glass sheet 2 and are parallel to each other and spaced from each other by a step of 0.5 mm per example, a depth / step ratio of 1.6.
  • the grooves 3 are perpendicular to the plane of the glass sheet 2 and are delimited by two internal faces 4 and 5.
  • These internal faces 4 and 5 represent the walls of the crack generated by laser beam and are distant from each other, but sufficiently close to stay invisible to the eye.
  • An incident light beam 6 comes into contact with the glass sheet 2 on its face 7, it is deflected by refraction at the face 7, then by refraction at the inner face 4 of groove 3 and again by refraction at level of the face 8 of the glass sheet 2.
  • Figure 2 shows a portion of a vertical section of another type of panel 1 according to the invention.
  • the panel 1 consists of two sheets of 10 and 11 together by means of a tab 12.
  • This tab 12 is, for example, a polyvinyl butyral (PVB) sheet.
  • the glass sheet 11 has a series of grooves 3 identical to that of the 1, with the difference that the glass sheet 11 is less thick than the sheet of glass 2, its thickness being identical to the depth of the grooves.
  • the glass sheet 10 has a thickness greater than that of the glass sheet 11 and thus, serves as a support for the entire panel 1.
  • the glass sheet 10 has a thickness of 4 mm and the glass sheet 11 a thickness of 0.8 mm.
  • Figure 3 shows a vertical section of a building room on which the panel 1 according to the invention was mounted as a window.
  • the radius 12 has a small angle of incidence, and crosses the panel 1 without significant deviation by simple refraction. So, the background of the room remains illuminated.
  • the radius 13 presents, on the other hand, a wide angle of incidence and is deflected as it passes through the panel 1 towards the ceiling of the room, said ceiling then diffusely reflecting the radius 13 to the entire premises.
  • the incident light rays arrives according to a wide angle, the brightness of the room remains homogeneous.
  • FIG. 4 represents a part of a vertical section of a double insulating glazing in which the panel 1 according to the invention has been inserted.
  • the double insulating glazing consists of transparent panel 1 according to the invention and a glass sheet 15, the panel 1 and the glass sheet 15 being separated from each other by an air knife 16 and united at their periphery through a profiled frame here not shown on the figure and known to those skilled in the art.
  • the grooves 3 of the panel 1 are in contact with the air knife 16.

Abstract

The transparent panel has at least one sheet of glass (1) with horizontal and parallel grooves (3) made through part of its thickness. The grooves lie perpendicular to the surface of the glass sheet and are spaced at even intervals. The transparent panel can be multilayered, with the depth of the grooves equivalent to the thickness of the glass sheet, and the ratio of the grooves' depth to the distance between them being between 0.5 and 2:1, and preferably between 1 and 2:1.

Description

L'invention concerne un panneau transparent destiné à être monté, notamment, dans une baie de fenêtre de bâtiment et permettant de réorienter les rayons lumineux naturels incidents de manière à homogénéiser la luminosité à l'intérieur du bâtiment.The invention relates to a transparent panel intended to be mounted, particular, in a bay window of building and allowing to reorient the incident natural light rays so as to homogenize the luminosity at inside the building.

L'invention sera décrite plus particulièrement pour une fenêtre de bâtiment dans laquelle sera montée le panneau transparent de manière à réorienter les rayons lumineux naturels incidents vers le plafond du local dudit bâtiment, mais l'invention ne se limite pas à ce type d'application, tout type d'ouverture réalisée dans un bâtiment et apte à recevoir un panneau transparent entre également dans le cadre de l'invention.The invention will be described more particularly for a building window in which will be mounted the transparent panel so as to redirect the natural light rays incident to the ceiling of the premises of the said building, but the invention is not limited to this type of application, any type of opening made in a building and able to receive a transparent panel between also in the context of the invention.

Une technique connue pour améliorer le niveau de lumière naturelle à l'intérieur d'un local consiste à dévier les rayons lumineux naturels incidents par l'intermédiaire d'un vitrage de sorte qu'au moins une partie de ceux-ci soient réfléchis vers le plafond du local qui les refléchit à son tour vers l'intérieur du local. Ainsi, on augmente le niveau de lumière naturelle dans l'ensemble du local en modifiant la répartition des rayons lumineux, en particulier au niveau des zones du local qui sont éloignées de la fenêtre.A technique known to improve the level of natural light at the interior of a room is to divert the natural light rays incident by through a glazing so that at least some of these are reflect towards the ceiling of the room which reflects them to the interior of the room. Thus, we increase the level of natural light throughout the local area. altering the distribution of light rays, especially at the level of local who are far from the window.

De façon traditionnelle, les moyens employés pour dévier les rayons lumineux incidents par l'intermédiaire d'un vitrage consistent soit en l'utilisation de prismes faits d'un matériau transparent qui réfractent le rayon lumineux incident soit en l'utilisation de surfaces métalliques qui réfléchissent le rayon lumineux incident. In the traditional way, the means used to deflect the rays bright incidents through glazing consist either in the use of Prisms made of a transparent material that refract the incident light ray in the use of metal surfaces that reflect the light beam incident.

En particulier, il est connu d'employer des vitrages dont une face est moulée de manière à former une série de prismes. Cependant, de tels vitrages à surface prismatique ne permettent pas de dévier les rayons lumineux d'un angle supérieur à 45° et il s'avère qu'une déviation d'un angle supérieur à 45° des rayons solaires est souvent nécessaire pour que ceux-ci puissent être dirigés vers le plafond du local.In particular, it is known to use glazing with a face molded from to form a series of prisms. However, such surface glazing prismatic can not deflect the light rays from a higher angle at 45 ° and it turns out that a deviation from an angle greater than 45 ° of solar rays is often necessary so that they can be directed to the ceiling of the local.

Par ailleurs, de tels vitrages à surface prismatique offrent, en tant que fenêtre, une vision au travers dudit vitrage qui est déformée et la surface du vitrage qui présente la série de prismes, est difficile à nettoyer.Moreover, such windows with a prismatic surface offer, as a window, a vision through said glazing which is deformed and the surface of the glazing which presents the series of prisms, is difficult to clean.

Il est également connu d'employer des réflecteurs métalliques intégrés dans un vitrage sous la forme d'une jalousie. Cependant, de tels réflecteurs métalliques ne sont pas totalement satisfaisants. En effet, l'angle de réflexion du rayon lumineux dépend fortement de l'angle d'incidence de la lumière et les surfaces réfléchissantes sont difficiles à nettoyer et présentent un encombrement important. Le brevet américain US 4,989,952 a déjà proposé un panneau plat en plastique transparent présentant une pluralité de découpes laser parallèles et espacées les unes des autres d'un pas régulier, ces découpes étant réalisées perpendiculairement au panneau de manière à diviser le panneau en parallélépipèdes sur au moins une partie de son épaisseur. Les découpes sont protégées des poussières à l'aide d'une feuille mince transparente fixée audit panneau.It is also known to employ metal reflectors integrated into a glazing in the form of a jealousy. However, such metal reflectors are not totally satisfactory. Indeed, the angle of reflection of the light ray strongly depends on the angle of incidence of the light and the surfaces reflective are difficult to clean and have a large footprint. US Pat. No. 4,989,952 has already proposed a plastic flat panel having a plurality of parallel laser cutouts and spaced apart each other with a regular step, these cuts being made perpendicular to the panel so as to divide the panel into parallelepipeds on at least a part of its thickness. The cuts are protected from dust using a transparent thin sheet attached to the audit sign.

Cependant, une telle solution n'est pas totalement satisfaisante d'un point de vue optique. En effet, pour obtenir une réflexion spéculaire des rayons lumineux incidents, il est nécessaire que les faces internes des découpes au laser soient parfaitement lisses. Il est connu que la découpe laser d'une matière plastique ne permet pas d'obtenir une surface optiquement parfaitement lisse et cela du fait que, sous l'action du laser, la matière plastique fond et ne permet pas de créer un découpe nette et franche. Il s'avère donc nécessaire d'effectuer une étape supplémentaire afin de rendre les surfaces internes des découpes optiquement adéquates. Or une telle étape supplémentaire est contraignante et n'est pas toujours aisément réalisable du fait de la taille des découpes.However, such a solution is not totally satisfactory from a point of view optical. Indeed, to obtain a specular reflection of light rays incidents, it is necessary that the internal faces of the laser cutouts be perfectly smooth. It is known that the laser cutting of a material plastic does not provide an optically perfectly smooth surface and this is because, under the action of the laser, the plastic material melts and does not allow to create a crisp and clean cut. It is therefore necessary to carry out a extra step in order to make the internal surfaces of the cuts optically adequate. But such an additional step is binding and is not always easily achievable because of the size of the cuts.

Le WO 94/25792 enseigne un composant optique comprenant deux éléments plans sur lesquels sont disposés des surfaces élémentaires capables de refléter et/ou réfracter la lumière incidente.WO 94/25792 teaches an optical component comprising two elements planes on which are arranged elementary surfaces able to reflect and / or refract the incident light.

La présente invention a pour but de fournir un panneau destiné à être monté, notamment, dans une baie de fenêtre d'un bâtiment permettant de dévier des rayons lumineux incidents d'un angle supérieur à 45° de manière à réorienter les rayons vers le plafond du local et ainsi d'améliorer le niveau de luminosité à l'intérieur du local, offrant une vision au travers de celui-ci qui n'est pas déformée, pouvant être nettoyé sans difficultés et pouvant être mis en oeuvre rapidement et facilement sans étape de finition de l'état de surface des découpes.The present invention aims to provide a panel to be mounted, in particular, in a window bay of a building enabling the deflection of light rays incident at an angle greater than 45 ° in order to reorient the rays to the ceiling of the room and thus improve the brightness level to inside the room, offering a vision through it that is not distorted, which can be cleaned easily and can be implemented quickly and easily without finishing step of the surface state of the cuts.

L'invention propose ainsi un panneau transparent conforme à la revendication 1. Les sillons présents à la surface de la feuille de verre sont réalisés par la création de fissures dont on contrôle la profondeur. Leur surface interne est optiquement lisse et permet ainsi une réflexion totale des rayons lumineux naturels incidents.The invention thus proposes a transparent panel according to claim 1. The furrows present on the surface of the glass sheet are created by the creation cracks whose depth is controlled. Their inner surface is optically smooth and thus allows total reflection of incident natural light rays.

Selon une variante avantageuse de l'invention, les sillons sont sensiblement perpendiculaires au plan de la feuille de verre.According to an advantageous variant of the invention, the grooves are substantially perpendicular to the plane of the glass sheet.

De préférence, les sillons sont répartis de manière uniforme sur la surface de la feuille de verre.Preferably, the grooves are distributed uniformly over the surface of the glass sheet.

Selon une variante avantageuse de l'invention, la feuille de verre fait partie d'un panneau feuilleté et la profondeur des sillons est égale à l'épaisseur de la feuille de verre. De cette façon, les sillons sont réalisés directement sur l'ensemble feuilleté et la profondeur de la découpe laser des sillons est avantageusement contrôlée par la présence de l'intercalaire du panneau feuilleté, le reste de la feuille de verre étant maintenu en place grâce au même intercalaire. According to an advantageous variant of the invention, the glass sheet is part of a laminated panel and the depth of the grooves is equal to the thickness of the sheet of glass. In this way, the furrows are made directly on the whole laminated and the depth of the laser cutting grooves is advantageously controlled by the presence of the interlayer of the laminated panel, the rest of the glass sheet being held in place thanks to the same interlayer.

Selon une réalisation préférée de l'invention, le ratio de la profondeur des sillons sur la distance entre deux sillons est compris entre 0,5 et 2 et, de préférence, entre 1 et 2. De cette manière, on optimise le nombre de rayons lumineux naturels incidents qui vont être réorientés.According to a preferred embodiment of the invention, the ratio of the depth of the furrows on the distance between two furrows is between 0.5 and 2 and, preferably, between 1 and 2. In this way, the number of spokes is optimized bright natural incidents that are going to be redirected.

Selon une variante préférée de l'invention, le panneau transparent fait parti d'un vitrage multiple isolant. De cette façon, la surface du panneau présentant les sillons est en contact avec la lame de gaz du vitrage multiple isolant et est ainsi protégée des poussières et de l'humidité. De plus, une telle variante permet de réaliser un vitrage multiple isolant combinant les performances isolantes avec les avantages d'un vitrage améliorant la luminosité d'un local.According to a preferred variant of the invention, the transparent panel is part of multiple insulation glazing. In this way, the surface of the panel presenting the grooves is in contact with the gas strip of the multiple insulating glazing and is thus protected from dust and moisture. In addition, such a variant makes it possible to to realize a multiple insulating glazing combining the insulating performances with the advantages of glazing improving the brightness of a room.

Le panneau transparent permet, comme explicité précédemment, de dévier des rayons lumineux incidents d'un angle supérieur à 45° de manière à réorienter les rayons vers le plafond du local et ainsi améliorer le niveau de luminosité naturelle à l'intérieur du local. Un tel panneau permet également d'obtenir une vision au travers sans déformations.The transparent panel allows, as explained above, to deviate light rays incident at an angle greater than 45 ° so as to redirect the rays to the ceiling of the room and thus improve the level of brightness natural inside the premises. Such a panel also makes it possible to obtain a vision through without deformations.

D'autres détails et caractéristiques avantageuses de l'invention ressortiront, ci-après, de la description d'exemples de réalisation de l'invention en référence aux figures 1, 2, 3 et 4 qui représentent :

  • Figure 1 : une coupe verticale d'un panneau selon l'invention.
  • Figure 2 : une coupe verticale d'un autre type de panneau selon l'invention.
  • Figure 3 : une coupe verticale d'un local de bâtiment sur lequel le panneau selon l'invention a été monté en tant que fenêtre.
  • Figure 4 : une coupe verticale d'un vitrage double dans lequel a été inséré le panneau selon l'invention.
Other details and advantageous features of the invention will emerge, below, from the description of exemplary embodiments of the invention with reference to FIGS. 1, 2, 3 and 4 which represent:
  • Figure 1 : a vertical section of a panel according to the invention.
  • Figure 2 : a vertical section of another type of panel according to the invention.
  • Figure 3 : a vertical section of a building room on which the panel according to the invention was mounted as a window.
  • Figure 4 : a vertical section of a double glazing in which was inserted the panel according to the invention.

On précise tout d'abord que, par souci de clarté, toutes les figures ne respectent pas rigoureusement les proportions entre les divers éléments représentés.First of all, for the sake of clarity, not all figures strictly respect the proportions between the various elements represented.

La figure 1 représente une partie d'une coupe verticale d'un panneau 1 selon l'invention. Figure 1 shows a portion of a vertical section of a panel 1 according to the invention.

Selon cette représentation, la panneau 1 est constitué d'une feuille de verre 2 sur laquelle une série de sillons 3 a été réalisée par une technique de découpe au laser telle que, par exemple, par la technique décrite dans le brevet européen EP-B-0 633 867. According to this representation, the panel 1 consists of a glass sheet 2 on which a series of grooves 3 has been made by a laser cutting technique such as, for example, by the technique described in the European patent EP-B -0,633,867.

Les sillons 3 ont, par exemple, une profondeur de 0,8 mm pour une épaisseur totale de la feuille de verre 2 de 2 mm. Les sillons 3 sont disposés horizontalement par rapport au plan général de la feuille de verre 2 et sont parallèles entre-eux et distants les uns des autres d'un pas de 0,5 mm par exemple, soit un ratio profondeur/pas de 1,6.The grooves 3 have, for example, a depth of 0.8 mm for a total thickness of the glass sheet 2 of 2 mm. The grooves 3 are arranged horizontally in relation to the general plane of the glass sheet 2 and are parallel to each other and spaced from each other by a step of 0.5 mm per example, a depth / step ratio of 1.6.

Selon cette représentation, les sillons 3 sont perpendiculaires au plan général de la feuille de verre 2 et sont délimités par deux faces internes 4 et 5.According to this representation, the grooves 3 are perpendicular to the plane of the glass sheet 2 and are delimited by two internal faces 4 and 5.

Ces faces internes 4 et 5 représentent les parois de la fissure générée par rayon laser et sont distantes l'une de l'autre, mais de manière suffisamment proches de manière à rester invisible à l'oeil.These internal faces 4 and 5 represent the walls of the crack generated by laser beam and are distant from each other, but sufficiently close to stay invisible to the eye.

Un rayon lumineux 6 incident arrive au contact de la feuille de verre 2 sur sa face 7, il est dévié par réfraction au niveau de la face 7, puis par réfraction totale au niveau de la face interne 4 du sillon 3 et à nouveau par réfraction au niveau de la face 8 de la feuille de verre 2.An incident light beam 6 comes into contact with the glass sheet 2 on its face 7, it is deflected by refraction at the face 7, then by refraction at the inner face 4 of groove 3 and again by refraction at level of the face 8 of the glass sheet 2.

Un autre rayon lumineux 9 incident arrive en contact avec la feuille de verre 2 mais sous un angle incident beaucoup plus faible, celui-ci est alors dévié uniquement par réfraction au niveau des faces 7 et 8 de la feuille de verre 2, pour autant qu'il ne rencontre pas de sillon 3.Another incident light ray comes into contact with the glass sheet But at a much smaller incident angle, it is only by refraction at the faces 7 and 8 of the glass sheet 2, for as long as it does not encounter a train path 3.

De cette manière, on observe que les rayons lumineux ayant un grand angle d'incidence, sont totalement déviés vers le plafond du local et que les rayons lumineux ayant un petit angle d'incidence ne sont pas obligatoirement réfléchis par les faces internes 4 des sillons. Ainsi, quel que soit l'angle d'incidence, on garde une constance en luminosité dans l'ensemble du local.In this way, it is observed that light rays having a large angle of incidence, are totally deviated towards the ceiling of the room and that the light rays having a small angle of incidence are not necessarily reflected by the internal faces 4 of the grooves. So, whatever the angle incidence, we keep a constant brightness in the entire room.

Par ailleurs, il est évident que tous les rayons réfractés au niveau de la face 7 de la feuille de verre 2 dans une direction parallèle aux sillons 3 vont traversés le panneau 1 sans être déviés. Ainsi, la vision au travers du panneau 1 dans des directions sensiblement parallèles aux angles des découpes 3 ne va pas être déformée.Moreover, it is obvious that all the refracted rays at the level of the face 7 of the glass sheet 2 in a direction parallel to the grooves 3 will go through panel 1 without being deflected. Thus, the vision through the panel 1 in substantially parallel directions to the corners of the blanks 3 is not going to be distorted.

La figure 2 représente une partie d'une coupe verticale d'un autre type de panneau 1 selon l'invention. Figure 2 shows a portion of a vertical section of another type of panel 1 according to the invention.

Selon cette représentation, le panneau 1 est constitué de deux feuilles de verre 10 et 11 réunies ensemble par l'intermédiaire d'un intercalaire 12. Cet intercalaire 12 est, par exemple, une feuille de polyvinylbutyral (PVB). On observe que la feuille de verre 11 présente une série de sillons 3 identique à celle de la figure 1, à la différence que la feuille de verre 11 est moins épaisse que la feuille de verre 2, son épaisseur étant identique à la profondeur des sillons. Avantageusement, la feuille de verre 10 présente une épaisseur supérieure à celle de la feuille de verre 11 et ainsi, sert de support à l'ensemble du panneau 1. Par exemple, la feuille de verre 10 a une épaisseur de 4 mm et la feuille de verre 11 une épaisseur de 0,8 mm.According to this representation, the panel 1 consists of two sheets of 10 and 11 together by means of a tab 12. This tab 12 is, for example, a polyvinyl butyral (PVB) sheet. We observe that the glass sheet 11 has a series of grooves 3 identical to that of the 1, with the difference that the glass sheet 11 is less thick than the sheet of glass 2, its thickness being identical to the depth of the grooves. Advantageously, the glass sheet 10 has a thickness greater than that of the glass sheet 11 and thus, serves as a support for the entire panel 1. For example, the glass sheet 10 has a thickness of 4 mm and the glass sheet 11 a thickness of 0.8 mm.

La figure 3 représente une coupe verticale d'un local de bâtiment sur lequel le panneau 1 selon l'invention a été monté en tant que fenêtre. Figure 3 shows a vertical section of a building room on which the panel 1 according to the invention was mounted as a window.

Selon cette représentation, on observe clairement le chemin suivi par deux types de rayon incident. Le rayon 12 présente un petit angle d'incidence, et traverse le panneau 1 sans déviation importante par simple réfraction. Ainsi, le fond du local reste illuminé. Le rayon 13 présente, par contre, un grand angle d'incidence et est dévié lors de son passage au travers du panneau 1 vers le plafond du local, ledit plafond réfléchissant alors de manière diffuse le rayon 13 vers l'ensemble du local. Ainsi, lorsque les rayons lumineux incidents arrive selon un grand angle, la luminosité de la pièce reste homogène.According to this representation, we clearly observe the path followed by two types of incident ray. The radius 12 has a small angle of incidence, and crosses the panel 1 without significant deviation by simple refraction. So, the background of the room remains illuminated. The radius 13 presents, on the other hand, a wide angle of incidence and is deflected as it passes through the panel 1 towards the ceiling of the room, said ceiling then diffusely reflecting the radius 13 to the entire premises. Thus, when the incident light rays arrives according to a wide angle, the brightness of the room remains homogeneous.

Afin de mieux comparer les avantages du panneau 1 selon l'invention, nous avons représenté en pointillé le chemin qu'aurait effectué le rayon 13 en traversant une feuille de verre banale, ce chemin étant référencé 14. Par ailleurs, il est évident que le rayon 12 qui passerait au travers d'une banale feuille de verre, suiverait le même chemin que celui représenté sur la figure.In order to better compare the advantages of panel 1 according to the invention, we have represented in dotted line the path that would have made the ray 13 in crossing a sheet of ordinary glass, this path being referenced 14. Moreover, it is obvious that the ray 12 which would pass through a banal sheet of glass, would follow the same path as that shown in the figure.

La figure 4 représente une partie d'une coupe verticale d'un vitrage double isolant dans lequel a été inséré le panneau 1 selon l'invention. FIG. 4 represents a part of a vertical section of a double insulating glazing in which the panel 1 according to the invention has been inserted.

Selon cette représentation, le vitrage double isolant est constitué du panneau transparent 1 selon l'invention et d'une feuille de verre 15, le panneau 1 et la feuille de verre 15 étant séparés l'un de l'autre par une lame d'air 16 et réunis à leur périphérie par l'intermédiaire d'un cadre profilé ici non représenté sur la figure et connu de l'homme du métier. De manière avantageuse, les sillons 3 du panneau 1 sont en contact avec la lame d'air 16. Une telle réalisation permet d'obtenir un vitrage isolant connu qui permet, en plus, de réorienter les rayons lumineux incidents et cela sans augmenter l'épaisseur totale du vitrage isolant.According to this representation, the double insulating glazing consists of transparent panel 1 according to the invention and a glass sheet 15, the panel 1 and the glass sheet 15 being separated from each other by an air knife 16 and united at their periphery through a profiled frame here not shown on the figure and known to those skilled in the art. Advantageously, the grooves 3 of the panel 1 are in contact with the air knife 16. Such an embodiment allows to obtain a known insulating glass which allows, in addition, to reorient the rays bright incidents and this without increasing the total thickness of the insulating glass.

L'invention ne se limite pas à ces types de réalisation et doit être interprétée de façon non limitative et englobant tout type de panneau transparent dans la portée des panneaux revendiqués.The invention is not limited to these types of embodiments and must be interpreted non-limiting way and encompassing any type of transparent panel in the scope claimed panels.

Claims (9)

  1. Transparent panel intended to be mounted, in particular, in a window opening in a building and reorienting the natural incident light rays so as to make the brightness inside the building uniform, comprising at least one sheet having, over at least part of its thickness, grooves disposed horizontally in the position of use and parallel to each other,
    characterised in that
    the sheet is made from glass, and the said grooves are invisible to the eye and were cut by laser by the creation of fissures.
  2. Panel according to the preceding claim, characterised in that the grooves are substantially perpendicular to the plane of the sheet of glass.
  3. Panel according to one of the preceding claims, characterised in that the grooves are distributed uniformly on the surface of the sheet of glass.
  4. Panel according to one of the preceding claims, characterised in that it is laminated and in that the depth of the grooves is equal to the thickness of the sheet of glass.
  5. Panel according to one of the preceding claims, characterised in that it is laminated, and in that it comprises two sheets of glass, one of which comprises the grooves, and an insert between the two sheets of glass.
  6. Panel according to one of Claims 4 or 5, characterised in that the insert is a sheet of polyvinyl butyral and in that a sheet comprising the grooves is less thick than another sheet without grooves.
  7. Panel according to one of the preceding claims, characterised in that the ratio of the depth of the grooves to the distance between two grooves is between 0.5 and 2 and preferably between 1 and 2.
  8. Multiple insulating glazing comprising a layer of air, characterised in that it comprises a panel according to one of the preceding claims.
  9. Glazing according to the preceding claim, characterised in that the surface of the panel having the grooves is in contact with the layer of air.
EP99401403A 1998-06-10 1999-06-10 Transparent panel for building improving the natural brightness inside the building Expired - Lifetime EP0964112B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9807275A FR2779755B1 (en) 1998-06-10 1998-06-10 TRANSPARENT PANEL FOR A BUILDING IMPROVING NATURAL BRIGHTNESS INSIDE THE BUILDING
FR9807275 1998-06-10

Publications (2)

Publication Number Publication Date
EP0964112A1 EP0964112A1 (en) 1999-12-15
EP0964112B1 true EP0964112B1 (en) 2004-01-21

Family

ID=9527212

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Application Number Title Priority Date Filing Date
EP99401403A Expired - Lifetime EP0964112B1 (en) 1998-06-10 1999-06-10 Transparent panel for building improving the natural brightness inside the building

Country Status (6)

Country Link
EP (1) EP0964112B1 (en)
AT (1) ATE258257T1 (en)
DE (1) DE69914256T2 (en)
ES (1) ES2213990T3 (en)
FR (1) FR2779755B1 (en)
PT (1) PT964112E (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112659055A (en) * 2020-12-15 2021-04-16 南京凡芽智能设备有限公司 Method for manufacturing and processing building glass curtain wall

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL65514A (en) * 1982-04-18 1986-10-31 Yitzchak Bar Yonah Selectively light transmitting panel for buildings
NZ224424A (en) * 1987-11-06 1990-12-21 Ian Robert Edmonds Light deflecting window panel: parallel cuts in transparent material by laser
JP3217385B2 (en) * 1991-02-21 2001-10-09 株式会社小坂研究所 How to cut glass panels
DE4134955A1 (en) * 1991-10-23 1993-04-29 Helmut Frank Ottomar P Mueller LIGHT GUIDE
RU2024441C1 (en) * 1992-04-02 1994-12-15 Владимир Степанович Кондратенко Process of cutting of nonmetal materials
DE4218215A1 (en) * 1992-06-03 1993-12-09 Ver Glaswerke Gmbh Glass block with diffuse light scattering
US5880886A (en) * 1993-05-04 1999-03-09 Milner; Peter James Optical component suitable for use in glazing

Also Published As

Publication number Publication date
EP0964112A1 (en) 1999-12-15
FR2779755A1 (en) 1999-12-17
DE69914256D1 (en) 2004-02-26
FR2779755B1 (en) 2000-07-21
ES2213990T3 (en) 2004-09-01
ATE258257T1 (en) 2004-02-15
DE69914256T2 (en) 2004-11-18
PT964112E (en) 2004-06-30

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