EP0770949A1 - Photoresponsive device for controlling the lighting in a room - Google Patents

Photoresponsive device for controlling the lighting in a room Download PDF

Info

Publication number
EP0770949A1
EP0770949A1 EP96810687A EP96810687A EP0770949A1 EP 0770949 A1 EP0770949 A1 EP 0770949A1 EP 96810687 A EP96810687 A EP 96810687A EP 96810687 A EP96810687 A EP 96810687A EP 0770949 A1 EP0770949 A1 EP 0770949A1
Authority
EP
European Patent Office
Prior art keywords
optical system
photosensitive element
integrating optical
base
conical
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.)
Granted
Application number
EP96810687A
Other languages
German (de)
French (fr)
Other versions
EP0770949B1 (en
Inventor
Bernard Grehant
Aurèle Millet
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.)
Somfy SA
Original Assignee
Somfy SA
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 Somfy SA filed Critical Somfy SA
Publication of EP0770949A1 publication Critical patent/EP0770949A1/en
Application granted granted Critical
Publication of EP0770949B1 publication Critical patent/EP0770949B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3922—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations and measurement of the incident light

Definitions

  • the subject of the invention is a photosensitive device for the installation of controls of the level of illumination of a room provided with at least one opening allowing the entry of natural light, this device being intended to be placed within reach of hand of the user to deliver a quantity sufficiently representative of the overall level of brightness inside the entire room.
  • the patents FR 91 06 160 and FR 91 08 331 describe systems ensuring the management of light comfort inside a room comprising at least one opening allowing the entry of light and equipped with concealment means and / or artificial lighting.
  • These occlusion or lighting means are electrically maneuverable by means of a transportable remote control device, generally placed on the work surface or on the bedside table. They include a luminosity sensor intended to transmit the state of the illumination to a logical processing unit which according to the given instruction of illumination will send orders by means of occultation and illumination for more or less illumination.
  • the senor In view of its small dimensions, the sensor will be, in such a situation, either in an area which is directly illuminated, or in an area which is only illuminated by diffusion of all the surfaces.
  • the illumination of a surface lit directly by the sun being several hundred times greater than the illumination of the same surface subjected to the luminance of the other surfaces of the room, an elementary sensor will give extremely different values in the two locations at a few centimeters apart while the overall level of illumination is the same.
  • the solution which has so far been given to this problem, is to arrange the light sensors on the ceiling of the premises so that they are not affected by direct sunlight. Now, it is judicious to associate the light sensor with the means of remote control of the concealment means which must necessarily be accessible by the occupant. It is also advantageous for the sensor to be sensitive to the level of lighting close to the user: his work surface, his bedside table.
  • the aim of the invention is to produce a sensor of small dimensions making it possible to provide a practical solution to it.
  • the photosensitive device characterized in that it comprises at least one photosensitive element associated with a weighted integrating optical system having a sensitivity attenuated in a range between two values of conical angles ⁇ Cmin and ⁇ Cmax such that ⁇ Cmin is less than ⁇ Smin and that ⁇ Cmax is greater than ⁇ Smax, ⁇ C representing the conical angle of a cone having the photosensitive element at its apex and the spherical angles ⁇ Smin and ⁇ Smax representing the limits of the portion of the sphere, centered on l photosensitive element, in which the photosensitive element can be illuminated directly by the sun.
  • a weighted integrating optical system having a sensitivity attenuated in a range between two values of conical angles ⁇ Cmin and ⁇ Cmax such that ⁇ Cmin is less than ⁇ Smin and that ⁇ Cmax is greater than ⁇ Smax, ⁇ C representing the conical angle of a cone having the photosensitive element at its apex and the spher
  • the weighted optical system has an attenuated sensitivity in the areas where the sensor is likely to be directly lit by the sun, the luminance of the direct sun rays perceived by the sensor is much lower.
  • the sensor is therefore less sensitive to direct sunlight and reacts exclusively to the overall level of illumination.
  • the integrating optical system is made of injected material and the photosensitive element is embedded in the material of the integrating optical system.
  • Figures 1 and 2 show the different incidences of direct solar radiation to which is subjected a sensor placed on a work surface in a room lit through a bay.
  • Figures 3 to 6 are schematic representations of the volume of use of a device according to the invention in different premises subject to different incidences of direct solar radiation.
  • FIG. 7 illustrates the description of the device according to the invention.
  • Figures 7a, 7b and 7c are diagrams showing different laws of sensitivity to light of a device according to the invention.
  • Figure 8 is a schematic view of a first embodiment of the device according to the invention.
  • Figure 9 is a schematic view of a second embodiment of the device according to the invention.
  • Figure 10 is a schematic view of a third embodiment of the device according to the invention.
  • Figure 11 is a schematic view of a fourth embodiment of the device according to the invention.
  • Figure 12 is a schematic view of a fifth embodiment of the device according to the invention.
  • Figure 13 is a schematic view of a variant of the fifth embodiment of the device according to the invention.
  • FIGS. 1 and 2 represent a room 1 in which a photosensitive device 2 is placed on a table 3.
  • the device 2 can perceive direct sunlight between an angle ⁇ S1 and an angle ⁇ S2 determined either by the heights HB min and HB max of the bay (Figure 1), or by the extreme values of the solar height (Figure 2) or the combination of the two.
  • angles ⁇ S1 and ⁇ S2 are bounded by angles ⁇ Smin and ⁇ Smax, ⁇ Smin denoting the extreme value of closing the angle ⁇ S1 and ⁇ Smax denoting the extreme value of opening the angle ⁇ S2 when the photosensitive element is moved to the inside the room.
  • the volume of use of the device according to the invention is different. This volume is such that in each of its points ⁇ Smin remains greater than ⁇ Cmin and ⁇ Smax remains less than ⁇ Cmax.
  • To determine the volume of use of the device simply draw, on the vertical section from the room, a straight line 4 of inclination ⁇ Cmin with respect to the vertical and leaning against the upper part of the bay and a straight line 5 of inclination ⁇ Cmax with respect to the vertical and leaning against the lower part of the bay .
  • the zenith height of the sun is determined by the latitude of the place and in the majority of cases (urban or hilly area), the height of the sun on the horizon is greater than 20 °.
  • the configuration of the room and its bays will therefore no longer be important in such places as to the risk for the sensor to be lit by the sun. at the zenith or on the horizon.
  • FIG. 5 the volume of use of a device having these same characteristics, is shown for a room of the same type as that of FIG. 3 but located at a latitude such that the sun at noon always remains at more than 20 °. from the vertical and in an environment such that the sun never appears less than 20 ° above the horizon.
  • the device can be placed anywhere in the room.
  • FIG. 7 schematically represents a sensor satisfying the above conditions.
  • This sensor comprises a photosensitive element 6, placed on a base 7 containing the electronics of the sensor, associated with a weighted integrating optical system 8.
  • This sensor has an attenuated sensitivity in a range 9 between two values of angles ⁇ 1 and ⁇ 2.
  • ⁇ 1 (respectively ⁇ 2) is chosen according to the optical characteristics of the weighted integrator system 8 and the conical angle ⁇ Cmax (respectively ⁇ Cmin) wanted.
  • the integrator's sensitivity law may have a sudden variation, as shown in FIG. 7a.
  • the sensitivity can be, for example, equal to 0.01 for the surfaces lying between the conical angles ⁇ Cmin and ⁇ Cmax and equal to 1 for the remaining surfaces.
  • the sensitivity law can also have a gradually varying profile as shown in FIG. 7b and have a more or less pronounced slope when passing from the sensitive zone of the device to the less sensitive zone.
  • the sensitivity will be normal to allow the integration of the illumination, for example of the ceiling, just as between ⁇ Cmax and a chosen angle of 120 °, to allow the integration of the illumination, for example, of the work and floor plan.
  • This 120 ° angle can be changed, depending on the opening of the normal integration zone.
  • FIGS. 8 to 11 represent several preferred embodiments of the method according to the invention, in which a value of 20 ° is assigned to the angle ⁇ Cmin and a value of 80 ° to the angle ⁇ Cmax, these values corresponding to a compromise for a urban local industrialized country under a latitude of 45 °.
  • the different embodiments of the device according to the invention shown have sensitivity curves as a function of the different angle of illumination due to their different geometric shape, the sensitivity of certain angular sectors can also be modified by depositing an attenuating mask.
  • FIG. 8 schematically represents a first embodiment of the device according to the invention.
  • This device comprises a photosensitive element 10 on its upper horizontal face and its lower horizontal face.
  • This photosensitive element 10 is placed in the center of a spherical integrating optical system 11 resting on a base 12 containing the electronics of the device.
  • a transmission mask 13 is affixed to the surface of the integrating optical system between the conical angles ⁇ 3 and ⁇ 4.
  • the angle ⁇ 3 (respectively ⁇ 4) is confused with the angle ⁇ Cmin (respectively ⁇ Cmax).
  • the light rays with an angle between 0 ° and ⁇ Cmin and between ⁇ Cmax and 120 ° reach the photosensitive element 10 directly after diffraction during penetration into the integrating optical system 11.
  • the light rays inciting with an angle between ⁇ Cmin and ⁇ Cmax also after diffraction at the photosensitive element, but with a greatly reduced intensity due to the transmission mask 13.
  • FIG. 9 schematically represents a second embodiment of the device according to the invention.
  • This device comprises a photosensitive element 14 on its upper horizontal face and its lower horizontal face and situated at the center of an integrating optical system 15 in the form of an ellipsoid, resting on a base 16 containing the electronics of the device.
  • This optical system 15 is covered with a transmission mask 17 between the conical angles ⁇ 5 and ⁇ 6.
  • the light rays of angle between 0 ° and ⁇ Cmin and between ⁇ Cmax and 120 ° reach directly the photosensitive element 14 after diffraction during penetration into the integrating optical system 15. Those inciding with an angle between ⁇ Cmin and ⁇ Cmax are first attenuated in their intensity by the transmission mask 17.
  • FIG. 10 A third embodiment of the device according to the invention is shown diagrammatically in FIG. 10.
  • This device comprises a photosensitive element 18 on its two upper and lower horizontal faces, situated in the center of an integrating optical system 19 fixed to a base 20 containing the electronics of the device.
  • the optical system 19 consists of two ellipsoidal parts 19a, 19b symmetrical with respect to the horizontal plane passing through the photosensitive element 18 and connected together by a cylindrical part 19c.
  • the upper ellipsoidal part 19a is covered between the conical angles ⁇ 7 and ⁇ 8 with a transmission mask 21.
  • the light rays of angle between 0 ° and Cmin and between ⁇ Cmax and 120 ° arrive directly at the photosensitive element 18 after diffraction during penetration into the optical device. Those of angle between ⁇ Cmin and ⁇ Cmax are attenuated in their intensity when passing through the transmission mask 21.
  • FIG. 11 represents a fourth embodiment of the device according to the invention.
  • the device here comprises a photosensitive element 22 on its upper horizontal face and an integrating optical system 23 resting on a base 24 containing the electronics of the device.
  • This integrating optical device 23 has an outer surface and an inner surface of different shapes, symmetrical with respect to a vertical axis.
  • the upper part 23a of its outer surface has the form of a hearth paraboloid F1 extended by a vertical cylindrical part 23b, itself extended by a toric part 23c.
  • This toric part is formed by the revolution of a circle of center F2 around the vertical axis of symmetry of the system 23.
  • the inner surface has a hemispherical upper part with center F1 23d extended by a ring 23e formed by the revolution of a focal point dish F2 around the vertical axis of symmetry of the optical system 23. It is dimensioned in such a way that it is located above the focus F1 of the paraboloid 23a.
  • the O-ring part 23c of the outer surface and the ring 23e of the inner surface meet on the base 24.
  • the photosensitive element 22 is located at the focus F1 of the paraboloid 23a.
  • a transmission mask 25 is affixed to the paraboloid 23a between the conical angle ⁇ 9 and the edge of the paraboloid and to the cylindrical part 23b of the outer surface of the integrating optical system 23.
  • a transmission mask 26 is affixed to the interior surface of the integrating optical system on the ring 23e.
  • the light rays of angle between 0 ° and ⁇ Cmin reach the photosensitive element 22 directly after diffraction during penetration into the integrating optical system 23.
  • the light rays with an angle between ⁇ Cmax and 120 ° reach the photosensitive element 22 after two reflections, one on the reflecting surface formed by the ring 23e of the interior surface of the optical system 23 and the other on the reflecting surface formed by the part of the paraboloid 23a covered with a transmission mask 25 along paths between the paths 27 and 28.
  • Figure 12 shows a fifth embodiment of the device of the invention.
  • This device comprises a photosensitive element 29 and an integrating optical system 30 fixed on a base 31.
  • the system optics 30 is symmetrical about a vertical axis passing through the center of the photosensitive element. It comprises an upper part of conical or pyramidal shape extended by a convex ring fixed at its base to the base 31 and is made of diffusing plastic.
  • a transmission mask 32 is applied to the external part of the integrating optical system 30 between the conical angles ⁇ 10 and ⁇ 11.
  • FIG. 13 A variant of the embodiment of Figure 12 is shown in Figure 13.
  • This variant comprises a photosensitive element 33, a weighted integrating optical system 34 and a base 35 similar to those of the previous embodiment. It further comprises a transmission mask 36 placed inside the optical system 34 around the photosensitive element 33.
  • This mask 36 is intended to attenuate the intensity of the incident light rays with an angle between the horizontal and the conical angle ⁇ 12. It has a cylindrical shape of axis the axis of symmetry of the optical system 34, a circular section if the optical system has a conical shape, or square if the optical system 34 has a pyramidal shape.
  • the optical system 34 is moreover provided on its inner surface with a reflecting plate 37 arranged in such a way that the light rays incident with an angle greater than ⁇ 13 are focused towards the photosensitive element 33.
  • the transmission mask can be of zero transmission coefficient or different from zero.

Landscapes

  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
  • Television Receiver Circuits (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Projection-Type Copiers In General (AREA)

Abstract

The photosensor device comprises a photosensitive element (6) mounted on a base (7) with its sensitive surface facing upwards. The sensor is covered by a conical screen (8) forming an optical integrator. The optical transmission through the conical screen varies according to the angle at which light enters with respect to the vertical. A transmission mask (9) is applied to the outside surface of the cone, between two angles (theta-1, theta-2). This is intended to attenuate the sensitivity of the sensor when light is incident between two specified angles (aCmin, aCmax).

Description

L'invention a pour objet un dispositif photosensible pour l'installation de commandes du niveau d'éclairement d'un local pourvu d'au moins une ouverture permettant l'entrée de la lumière naturelle, ce dispositif étant destiné à être disposé à portée de main de l'utilisateur pour délivrer une grandeur suffisamment représentative du niveau global de luminosité à l'intérieur de l'ensemble du local.The subject of the invention is a photosensitive device for the installation of controls of the level of illumination of a room provided with at least one opening allowing the entry of natural light, this device being intended to be placed within reach of hand of the user to deliver a quantity sufficiently representative of the overall level of brightness inside the entire room.

Les brevets FR 91 06 160 et FR 91 08 331 décrivent des systèmes assurant la gestion du confort lumineux à l'intérieur d'un local comportant au moins une baie permettant l'entrée de la lumière et équipé de moyens d'occultation et/ou d'éclairage artificiel. Ces moyens d'occulation ou d'éclairage sont manoeuvrables électriquement au moyen d'un dispositif de télécommande transportable, généralement placé sur le plan de travail ou sur la table de chevet. Ils incluent un capteur de luminosité destiné à transmettre l'état de l'éclairement à une unité logique de traitement qui suivant la consigne d'éclairement donnée enverra des ordres au moyen d'occultation et d'éclairement pour plus ou moins d'éclairement.The patents FR 91 06 160 and FR 91 08 331 describe systems ensuring the management of light comfort inside a room comprising at least one opening allowing the entry of light and equipped with concealment means and / or artificial lighting. These occlusion or lighting means are electrically maneuverable by means of a transportable remote control device, generally placed on the work surface or on the bedside table. They include a luminosity sensor intended to transmit the state of the illumination to a logical processing unit which according to the given instruction of illumination will send orders by means of occultation and illumination for more or less illumination.

Ces systèmes de gestion de l'éclairement ne tiennent cependant pas compte du fait que la plupart des moyens d'occultation présentent un effet non-diffusant. Ceci se traduit, dans des conditions d'ensoleillement direct, par l'apparition de zones violemment éclairées et de zones obscurcies. De telles zones apparaissent, par exemple, dans le cas de stores de façade, d'écrans ou de stores vénitiens. L'effet résultant dans le local peut, malgré ces points d'ombre et d'éclairage violent, être considéré comme satisfaisant du point de vue de l'occupant, celui-ci étant plus sensible au niveau global d'éclairement qu'à sa répartition spatiale.These lighting management systems do not, however, take into account the fact that most of the concealment means have a non-diffusing effect. This results, in conditions of direct sunlight, by the appearance of violently lit areas and obscured areas. Such areas appear, for example, in the case of facade blinds, screens or Venetian blinds. The resulting effect in the room can, despite these points of shade and violent lighting, be considered satisfactory from the point of view of the occupant, the latter being more sensitive to the overall level of lighting than to its spatial distribution.

Compte tenu de ses faibles dimensions, le capteur se trouvera, dans une telle situation, soit dans une zone fortement éclairée directement, soit dans une zone uniquement éclairée par diffusion de l'ensemble des surfaces. L'éclairement d'une surface éclairée directement par le soleil étant plusieurs centaines de fois supérieure à l'éclairement de la même surface soumise à la luminance des autres surfaces de la pièce, un capteur élémentaire donnera des valeurs extrêmement différentes dans les deux emplacements à quelques centimètres de distance alors que le niveau global d'éclairement est le même.In view of its small dimensions, the sensor will be, in such a situation, either in an area which is directly illuminated, or in an area which is only illuminated by diffusion of all the surfaces. The illumination of a surface lit directly by the sun being several hundred times greater than the illumination of the same surface subjected to the luminance of the other surfaces of the room, an elementary sensor will give extremely different values in the two locations at a few centimeters apart while the overall level of illumination is the same.

Dans le cas d'une manoeuvre d'un store de façade, une ombre peut se déplacer et atteindre le capteur alors que la mesure donnée par celui-ci d'un trop grand éclairement aura provoqué une commande de fermeture. Le capteur est alors brusquement soumis à une très forte diminution de luminosité, ce qui logiquement conduit à une manoeuvre d'ouverture. Un mouvement d'oscillation du moyen d'occultation est alors difficile à éviter.In the case of an operation of a facade blind, a shadow can move and reach the sensor while the measurement given by the latter of too much light will have caused a closing command. The sensor is then suddenly subjected to a very strong reduction in brightness, which logically leads to an opening operation. An oscillating movement of the concealment means is therefore difficult to avoid.

La solution, qui jusqu'à présent a été donnée à ce problème, est de disposer les capteurs de luminosité au plafond des locaux de façon à ce qu'ils ne soient pas atteints par un ensoleillement direct. Or, il est judicieux d'associer le capteur de luminosité avec le moyen de télécommande des moyens d'occultation qui doit nécessairement être accessible par l'occupant. Il est en outre avantageux que le capteur soit sensible au niveau d'éclairement proche de l'utilisateur : son plan de travail, sa table de chevet.The solution, which has so far been given to this problem, is to arrange the light sensors on the ceiling of the premises so that they are not affected by direct sunlight. Now, it is judicious to associate the light sensor with the means of remote control of the concealment means which must necessarily be accessible by the occupant. It is also advantageous for the sensor to be sensitive to the level of lighting close to the user: his work surface, his bedside table.

Le problème à résoudre ainsi posé, notamment dans ses aspects contradictoires, le but de l'invention est de réaliser un capteur de faibles dimensions permettant d'y apporter une solution pratique.The problem to be solved thus posed, in particular in its contradictory aspects, the aim of the invention is to produce a sensor of small dimensions making it possible to provide a practical solution to it.

Ce but est atteint par le dispositif photosensible selon l'invention caractérisé en ce qu'il comprend au moins un élément photosensible associé à un système optique intégrateur pondéré présentant une sensibilité atténuée dans une plage comprise entre deux valeurs d'angles coniques αCmin et αCmax telles que αCmin est inférieur à αSmin et que αCmax est supérieur à αSmax, αC représentant l'angle conique d'un cône ayant pour sommet l'élément photosensible et les angles sphériques αSmin et αSmax représentant les limites de la portion de sphère, centrée sur l'élément photosensible, dans laquelle l'élément photosensible peut être éclairé directement par le soleil.This object is achieved by the photosensitive device according to the invention characterized in that it comprises at least one photosensitive element associated with a weighted integrating optical system having a sensitivity attenuated in a range between two values of conical angles αCmin and αCmax such that αCmin is less than αSmin and that αCmax is greater than αSmax, αC representing the conical angle of a cone having the photosensitive element at its apex and the spherical angles αSmin and αSmax representing the limits of the portion of the sphere, centered on l photosensitive element, in which the photosensitive element can be illuminated directly by the sun.

Du fait que le système optique pondéré présente une sensibilité atténuée dans les zones où le capteur est susceptible d'être éclairé directement par le soleil, la luminance des rayons de soleil directs perçue par le capteur est beaucoup plus faible. Le capteur est donc moins sensible à l'éclairage direct du soleil et réagit exclusivement au niveau global d'éclairement.Because the weighted optical system has an attenuated sensitivity in the areas where the sensor is likely to be directly lit by the sun, the luminance of the direct sun rays perceived by the sensor is much lower. The sensor is therefore less sensitive to direct sunlight and reacts exclusively to the overall level of illumination.

De manière préférentielle, le système optique intégrateur est en matière injectée et l'élément photosensible est noyé dans la matière du système optique intégrateur.Preferably, the integrating optical system is made of injected material and the photosensitive element is embedded in the material of the integrating optical system.

L'invention sera exposée de manière plus explicite à l'aide d'exemples d'exécution représentés dans les dessins annexés, dans lesquels :The invention will be explained more explicitly with the aid of exemplary embodiments represented in the annexed drawings, in which:

Les figures 1 et 2 représentent les différentes incidences du rayonnement solaire direct auquel est soumis un capteur placé sur un plan de travail dans un local éclairé à travers une baie.Figures 1 and 2 show the different incidences of direct solar radiation to which is subjected a sensor placed on a work surface in a room lit through a bay.

Les figures 3 à 6 sont des représentations schématiques du volume d'utilisation d'un dispositif selon l'invention dans des locaux différents soumis à différentes incidences du rayonnement solaire direct.Figures 3 to 6 are schematic representations of the volume of use of a device according to the invention in different premises subject to different incidences of direct solar radiation.

La figure 7 illustre la description du dispositif selon l'invention.FIG. 7 illustrates the description of the device according to the invention.

Les figures 7a, 7b et 7c sont des diagrammes représentant des lois différentes de sensibilités à la lumière d'un dispositif selon l'invention.Figures 7a, 7b and 7c are diagrams showing different laws of sensitivity to light of a device according to the invention.

La figure 8 est une vue schématique d'une première forme d'exécution du dispositif selon l'invention.Figure 8 is a schematic view of a first embodiment of the device according to the invention.

La figure 9 est une vue schématique d'une deuxième forme d'exécution du dispositif selon l'invention.Figure 9 is a schematic view of a second embodiment of the device according to the invention.

La figure 10 est une vue schématique d'une troisième forme d'exécution du dispositif selon l'invention.Figure 10 is a schematic view of a third embodiment of the device according to the invention.

La figure 11 est une vue schématique d'une quatrième forme d'exécution du dispositif selon l'invention.Figure 11 is a schematic view of a fourth embodiment of the device according to the invention.

La figure 12 est une vue schématique d'une cinquième forme d'exécution du dispositif selon l'invention.Figure 12 is a schematic view of a fifth embodiment of the device according to the invention.

La figure 13 est une vue schématique d'une variante de la cinquième forme d'exécution du dispositif selon l'invention.Figure 13 is a schematic view of a variant of the fifth embodiment of the device according to the invention.

Dans la description suivante toutes les valeurs d'angle pour lesquels il n'est rien précisé sont données par rapport à la verticale.In the following description all the angle values for which nothing is specified are given with respect to the vertical.

Les figures 1 et 2 représentent un local 1 dans lequel un dispositif photosensible 2 est disposé sur une table 3.FIGS. 1 and 2 represent a room 1 in which a photosensitive device 2 is placed on a table 3.

Le dispositif 2 peut percevoir un éclairage direct du soleil entre un angle αS1 et un angle αS2 déterminés soit par les hauteurs HB min et HB max de la baie (figure 1), soit par les valeurs extrêmes de la hauteur solaire (figure 2) ou la combinaison des deux.The device 2 can perceive direct sunlight between an angle αS1 and an angle αS2 determined either by the heights HB min and HB max of the bay (Figure 1), or by the extreme values of the solar height (Figure 2) or the combination of the two.

Ces angles αS1 et αS2 sont bornés par des angles αSmin et αSmax, αSmin désignant la valeur extrême de fermeture de l'angle αS1 et αSmax désignant la valeur extrême d'ouverture de l'angle αS2 lorsque l'élément photosensible est déplacé à l'intérieur du local.These angles αS1 and αS2 are bounded by angles αSmin and αSmax, αSmin denoting the extreme value of closing the angle αS1 and αSmax denoting the extreme value of opening the angle αS2 when the photosensitive element is moved to the inside the room.

Selon le local, le volume d'utilisation du dispositif selon l'invention est différent. Ce volume est tel qu'en chacun de ses points αSmin reste supérieur à αCmin et αSmax reste inférieur à αCmax.Depending on the room, the volume of use of the device according to the invention is different. This volume is such that in each of its points αSmin remains greater than αCmin and αSmax remains less than αCmax.

Dans les figures 3 et 4, ce volume d'utilisation est déterminé pour un système optique intégrateur pondéré dont la surface à sensibilité attenuée est délimitée par les angles αCmin = 20° et αCmax = 80° et pour un soleil dont les rayons peuvent être perçus entre 0 et 90°. Pour déterminer le volume d'utilisation du dispositif, il suffit de tracer, sur la coupe verticale du local, une droite 4 d'inclinaison αCmin par rapport à la verticale et s'appuyant contre la partie supérieure de la baie et une droite 5 d'inclinaison αCmax par rapport à la verticale et s'appuyant contre la partie inférieure de la baie. Si le dispositif se trouve à gauche de la droite 4 ou au-dessus de la droite 5, des rayons de soleil éclairent directement une partie de la surface du dispositif dont la sensibilité n'est pas atténuée. Ces deux droites déterminent donc le volume dans lequel un dispositif déterminé peut être utisé. Un dispositif ayant les valeurs αCmin et αCmax citées précédemment dispose d'un volume d'utilisation V1 assez faible dans le local de la figure 3. Par contre, dans le local selon la figure 4, ce volume d'utilisation V1 est déjà plus important.In Figures 3 and 4, this volume of use is determined for a weighted integrating optical system whose surface with attenuated sensitivity is delimited by the angles αCmin = 20 ° and αCmax = 80 ° and for a sun whose rays can be perceived between 0 and 90 °. To determine the volume of use of the device, simply draw, on the vertical section from the room, a straight line 4 of inclination αCmin with respect to the vertical and leaning against the upper part of the bay and a straight line 5 of inclination αCmax with respect to the vertical and leaning against the lower part of the bay . If the device is located to the left of line 4 or above line 5, rays of sunlight directly illuminate part of the surface of the device whose sensitivity is not attenuated. These two lines therefore determine the volume in which a given device can be used. A device having the values αCmin and αCmax mentioned above has a fairly low volume of use V1 in the room in FIG. 3. On the other hand, in the room according to FIG. 4, this volume of use V1 is already greater. .

En fait, la hauteur zénithale du soleil est déterminée par la latitude du lieu et dans la majorité des cas (zone urbaine ou vallonnée), la hauteur du soleil à l'horizon est supérieure à 20°. Pour un dispositif de mêmes caractéristiques d'angles que celui des figures 3 et 4, la configuration du local et de ses baies n'aura donc en de tels lieux plus d'importance quant au risque pour le capteur d'être éclairé par le soleil au zénith ou à l'horizon.In fact, the zenith height of the sun is determined by the latitude of the place and in the majority of cases (urban or hilly area), the height of the sun on the horizon is greater than 20 °. For a device with the same angle characteristics as that of FIGS. 3 and 4, the configuration of the room and its bays will therefore no longer be important in such places as to the risk for the sensor to be lit by the sun. at the zenith or on the horizon.

En figure 5, le volume d'utilisation d'un dispositif présentant ces mêmes caractéristiques, est représenté pour un local du même type que celui de la figure 3 mais situé à une latitude telle que le soleil à midi reste toujours à plus de 20° de la verticale et dans un environnement tel que le soleil n'apparaît jamais à moins de 20° au-dessus de l'horizon. Dans un tel cas, le dispositif peut être placé dans tout endroit de la pièce.In FIG. 5, the volume of use of a device having these same characteristics, is shown for a room of the same type as that of FIG. 3 but located at a latitude such that the sun at noon always remains at more than 20 °. from the vertical and in an environment such that the sun never appears less than 20 ° above the horizon. In such a case, the device can be placed anywhere in the room.

En figure 6, le volume d'utilisation du même dispositif est représenté pour le même type de local, dans les mêmes conditions d'environnement, mais à une latitude plus proche de l'équateur, telle que le soleil puisse se trouver à moins de 20° de la verticale. Le volume d'utilisation V2 est dans ce cas limité.In Figure 6, the volume of use of the same device is shown for the same type of room, in the same environmental conditions, but at a latitude closer to the equator, such that the sun can be within 20 ° from the vertical. The volume of use V2 is in this case limited.

Le dispositif selon l'invention doit satisfaire au mieux le compromis suivant :

  • présenter une zone de sensibilité atténuée étroite afin que l'élément photosensible fournisse une information la plus représentative possible de l'éclairement global du local, au risque de limiter le volume dans lequel le dispositif peut être utilisé sans risque d'exposition directe de l'élément photosensible au rayonnement solaire.
  • présenter une zone de sensibilité atténuée assez large afin que le dispositif puisse être disposé en n'importe quel point du local, sans risque d'exposition directe de l'élément photosensible au rayonnement solaire.
The device according to the invention must best satisfy the following compromise:
  • present a narrow attenuated sensitivity zone so that the photosensitive element provides information that is as representative as possible of the overall illumination of the room, at the risk of limiting the volume in which the device can be used without risk of direct exposure of the photosensitive element to solar radiation.
  • have a sufficiently wide attenuated sensitivity zone so that the device can be placed at any point in the room, without the risk of direct exposure of the photosensitive element to solar radiation.

La figure 7 représente schématiquement un capteur satisfaisant les conditions ci-dessus. Ce capteur comprend un élément photosensible 6, disposé sur un socle 7 contenant l'électronique du capteur, associé à un système optique intégrateur pondéré 8. Ce capteur présente une sensibilité atténuée dans une plage 9 comprise entre deux valeurs d'angles θ1 et θ2. θ1 (respectivement θ2) est choisi en fonction des caractéristiques optiques du système intégrateur pondéré 8 et de l'angle conique αCmax (respectivement αCmin) voulu.FIG. 7 schematically represents a sensor satisfying the above conditions. This sensor comprises a photosensitive element 6, placed on a base 7 containing the electronics of the sensor, associated with a weighted integrating optical system 8. This sensor has an attenuated sensitivity in a range 9 between two values of angles θ1 and θ2. θ1 (respectively θ2) is chosen according to the optical characteristics of the weighted integrator system 8 and the conical angle αCmax (respectively αCmin) wanted.

La loi de sensibilité de l'intégrateur peut présenter une variation brutale, comme représenté en figure 7a. La sensibilité peut être, par exemple, égale à 0,01 pour les surfaces se trouvant entre les angles coniques αCmin et αCmax et égale à 1 pour les surfaces restantes.The integrator's sensitivity law may have a sudden variation, as shown in FIG. 7a. The sensitivity can be, for example, equal to 0.01 for the surfaces lying between the conical angles αCmin and αCmax and equal to 1 for the remaining surfaces.

La loi de sensibilité peut également avoir un profil à variation progressive comme représenté en figure 7b et présenter une pente plus ou moins prononcée au passage de la zone sensible du dispositif à la zone moins sensible.The sensitivity law can also have a gradually varying profile as shown in FIG. 7b and have a more or less pronounced slope when passing from the sensitive zone of the device to the less sensitive zone.

La luminance du soleil levant/couchant étant plus faible que celle du soleil zénithal, la pente au voisinage de l'angle conique αCmax peut être moins prononcée que celle au voisinage de l'angle αCmin comme ceci est représenté en figure 7c.The luminance of the rising / setting sun being weaker than that of the zenithal sun, the slope in the vicinity of the conical angle αCmax can be less pronounced than that in the vicinity of the angle αCmin as this is represented in figure 7c.

Entre 0° et αCmin la sensibilité sera normale pour permettre l'intégration de l'éclairement, par exemple du plafond, tout comme entre αCmax et un angle choisi de 120°, pour permettre l'intégration de l'éclairement, par exemple, du plan de travail et du sol.Between 0 ° and αCmin the sensitivity will be normal to allow the integration of the illumination, for example of the ceiling, just as between αCmax and a chosen angle of 120 °, to allow the integration of the illumination, for example, of the work and floor plan.

Cet angle de 120° peut être changé, selon l'ouverture de la zone d'intégration normale.This 120 ° angle can be changed, depending on the opening of the normal integration zone.

Les figures 8 à 11 représentent plusieurs réalisations préférées du procédé selon l'invention, dans lesquelles une valeur de 20° est attribuée à l'angle αCmin et une valeur de 80° à l'angle αCmax, ces valeurs correspondant à un compromis pour un local urbain de pays industrialisé sous une latitude de 45°.FIGS. 8 to 11 represent several preferred embodiments of the method according to the invention, in which a value of 20 ° is assigned to the angle αCmin and a value of 80 ° to the angle αCmax, these values corresponding to a compromise for a urban local industrialized country under a latitude of 45 °.

Les différentes formes d'exécution du dispositif selon l'invention représentées présentent des courbes de sensibilité en fonction de l'angle d'éclairement différent en raison de leur forme géométrique différente, la sensibilité de certains secteurs angulaires peut également être modifiée par dépôt d'un masque atténuateur.The different embodiments of the device according to the invention shown have sensitivity curves as a function of the different angle of illumination due to their different geometric shape, the sensitivity of certain angular sectors can also be modified by depositing an attenuating mask.

Pour une raison de clarté des figures, la liaison entre l'élément photosensible et son électronique n'a pas été représentée.For the sake of clarity of the figures, the connection between the photosensitive element and its electronics has not been shown.

La figure 8 représente schématiquement une première réalisation du dispositif selon l'invention. Ce dispositif comprend un élément 10 photosensible sur sa face horizontale supérieure et sa face horizontale inférieure. Cet élément photosensible 10 est disposé au centre d'un système optique intégrateur sphérique 11 reposant sur un socle 12 contenant l'électronique du dispositif. Un masque de transmission 13 est apposé sur la surface du système optique intégrateur entre les angles coniques θ3 et θ4. Dans cette forme d'exécution particulière, l'angle θ3 (respectivement θ4) est confondu avec l'angle αCmin (respectivement αCmax).FIG. 8 schematically represents a first embodiment of the device according to the invention. This device comprises a photosensitive element 10 on its upper horizontal face and its lower horizontal face. This photosensitive element 10 is placed in the center of a spherical integrating optical system 11 resting on a base 12 containing the electronics of the device. A transmission mask 13 is affixed to the surface of the integrating optical system between the conical angles θ3 and θ4. In this particular embodiment, the angle θ3 (respectively θ4) is confused with the angle αCmin (respectively αCmax).

Les rayons lumineux d'angle compris entre 0° et αCmin et entre αCmax et 120° parviennent directement à l'élément photosensible 10 après diffraction lors de la pénétration dans le système optique intégrateur 11. Les rayons lumineux incidant avec un angle entre αCmin et αCmax parviennent également après diffraction à l'élément photosensible, mais avec une intensité fortement diminuée dûe au masque de transmission 13.The light rays with an angle between 0 ° and αCmin and between αCmax and 120 ° reach the photosensitive element 10 directly after diffraction during penetration into the integrating optical system 11. The light rays inciting with an angle between αCmin and αCmax also after diffraction at the photosensitive element, but with a greatly reduced intensity due to the transmission mask 13.

La figure 9 représente schématiquement une seconde réalisation du dispositif selon l'invention. Ce dispositif comprend un élément 14 photosensible sur sa face horizontale supérieure et sa face horizontale inférieure et situé au centre d'un système optique intégrateur 15 en forme d'ellipsoïde, reposant sur un socle 16 contenant l'électronique du dispositif. Ce système optique 15 est recouvert d'un masque de transmission 17 entre les angles coniques θ5 et θ6.FIG. 9 schematically represents a second embodiment of the device according to the invention. This device comprises a photosensitive element 14 on its upper horizontal face and its lower horizontal face and situated at the center of an integrating optical system 15 in the form of an ellipsoid, resting on a base 16 containing the electronics of the device. This optical system 15 is covered with a transmission mask 17 between the conical angles θ5 and θ6.

Comme pour la forme d'exécution précédente, les rayons lumineux d'angle compris entre 0° et αCmin et entre αCmax et 120° parviennent directement à l'élément photosensible 14 après diffraction lors de la pénétration dans le système optique intégrateur 15. Ceux incidant avec un angle entre αCmin et αCmax sont d'abord atténués dans leur intensité par le masque de transmission 17.As for the previous embodiment, the light rays of angle between 0 ° and αCmin and between αCmax and 120 ° reach directly the photosensitive element 14 after diffraction during penetration into the integrating optical system 15. Those inciding with an angle between αCmin and αCmax are first attenuated in their intensity by the transmission mask 17.

Une troisième forme d'exécution du dispositif selon l'invention est représentée schématiquement en figure 10. Ce dispositif comprend un élément 18 photosensible sur ses deux faces horizontales supérieure et inférieure, situé au centre d'un système optique intégrateur 19 fixé à un socle 20 contenant l'électronique du dispositif. Le système optique 19 est constitué de deux parties ellipsoïdales 19a, 19b symétriques par rapport au plan horizontal passant par l'élément photosensible 18 et reliées entre elles par une partie cylindrique 19c. La partie ellipsoïdale supérieure 19a est recouverte entre les angles coniques θ7 et θ8 d'un masque de transmission 21.A third embodiment of the device according to the invention is shown diagrammatically in FIG. 10. This device comprises a photosensitive element 18 on its two upper and lower horizontal faces, situated in the center of an integrating optical system 19 fixed to a base 20 containing the electronics of the device. The optical system 19 consists of two ellipsoidal parts 19a, 19b symmetrical with respect to the horizontal plane passing through the photosensitive element 18 and connected together by a cylindrical part 19c. The upper ellipsoidal part 19a is covered between the conical angles θ7 and θ8 with a transmission mask 21.

Les rayons lumineux d'angle compris entre 0° et Cmin et entre αCmax et 120° parviennent directement à l'élément photosensible 18 après diffraction lors de la pénétration dans le dispositif optique. Ceux d'angle compris entre αCmin et αCmax sont atténués dans leur intensité au passage à travers le masque de transmission 21.The light rays of angle between 0 ° and Cmin and between αCmax and 120 ° arrive directly at the photosensitive element 18 after diffraction during penetration into the optical device. Those of angle between αCmin and αCmax are attenuated in their intensity when passing through the transmission mask 21.

La figure 11 représente une quatrième forme d'exécution du dispositif selon l'invention. Le dispositif comprend ici un élément 22 photosensible sur sa face horizontale supérieure et un système optique intégrateur 23 reposant sur un socle 24 contenant l'électronique du dispositif.FIG. 11 represents a fourth embodiment of the device according to the invention. The device here comprises a photosensitive element 22 on its upper horizontal face and an integrating optical system 23 resting on a base 24 containing the electronics of the device.

Ce dispositif optique intégrateur 23 dispose d'une surface extérieure et d'une surface intérieure de formes différentes, symétriques par rapport à un axe vertical.This integrating optical device 23 has an outer surface and an inner surface of different shapes, symmetrical with respect to a vertical axis.

La partie supérieure 23a de sa surface extérieure présente la forme d'un paraboloïde de foyer F1 prolongé par une partie 23b cylindrique verticale, elle-même prolongée par une partie torique 23c. Cette partie torique est formée par la révolution d'un cercle de centre F2 autour de l'axe de symétrie vertical du système 23.The upper part 23a of its outer surface has the form of a hearth paraboloid F1 extended by a vertical cylindrical part 23b, itself extended by a toric part 23c. This toric part is formed by the revolution of a circle of center F2 around the vertical axis of symmetry of the system 23.

La surface intérieure présente une partie supérieure hémisphérique de centre F1 23d prolongée par un anneau 23e formé par la révolution d'une parabole de foyer F2 autour de l'axe de symétrie verticale du système optique 23. Elle est dimensionnée de telle façon qu'elle se trouve au-dessus du foyer F1 du paraboloïde 23a.The inner surface has a hemispherical upper part with center F1 23d extended by a ring 23e formed by the revolution of a focal point dish F2 around the vertical axis of symmetry of the optical system 23. It is dimensioned in such a way that it is located above the focus F1 of the paraboloid 23a.

La partie torique 23c de la surface extérieure et l'anneau 23e de la surface intérieure se rejoignent sur le socle 24.The O-ring part 23c of the outer surface and the ring 23e of the inner surface meet on the base 24.

L'élément photosensible 22 est situé au foyer F1 du paraboloïde 23a.The photosensitive element 22 is located at the focus F1 of the paraboloid 23a.

Un masque de transmission 25 est apposé sur le paraboloïde 23a entre l'angle conique θ9 et le bord du paraboloïde et sur la partie cylindrique 23b de la surface extérieure du système optique intégrateur 23.A transmission mask 25 is affixed to the paraboloid 23a between the conical angle θ9 and the edge of the paraboloid and to the cylindrical part 23b of the outer surface of the integrating optical system 23.

Un masque de transmission 26 est apposé sur la surface intérieure du système optique intégrateur sur l'anneau 23e.A transmission mask 26 is affixed to the interior surface of the integrating optical system on the ring 23e.

Les rayons lumineux d'angle compris entre 0° et αCmin parviennent directement à l'élément photosensible 22 après diffraction lors de la pénétration dans le système optique intégrateur 23.The light rays of angle between 0 ° and αCmin reach the photosensitive element 22 directly after diffraction during penetration into the integrating optical system 23.

Les rayons lumineux d'angle compris entre αCmax et 120° parviennent à l'élément photosensible 22 après deux réflexions, l'une sur la surface réfléchissante formée par l'anneau 23e de la surface intérieure du système optique 23 et l'autre sur la surface réfléchissante formée par la partie du paraboloïde 23a recouverte d'un masque de transmission 25 selon des trajectoires comprises entre les trajectoires 27 et 28.The light rays with an angle between αCmax and 120 ° reach the photosensitive element 22 after two reflections, one on the reflecting surface formed by the ring 23e of the interior surface of the optical system 23 and the other on the reflecting surface formed by the part of the paraboloid 23a covered with a transmission mask 25 along paths between the paths 27 and 28.

La figure 12 représente une cinquième forme d'exécution du dispositif de l'invention. Ce dispositif comprend un élément photosensible 29 et un système optique intégrateur 30 fixés sur un socle 31. Le système optique 30 est symétrique par rapport à un axe vertical passant par le centre de l'élément photosensible. Il comprend une partie supérieure de forme conique ou pyramidale prolongée par un anneau convexe fixé à sa base au socle 31 et est en matière plastique diffusante. Un masque de transmission 32 est appliqué sur la partie extérieure du système optique intégrateur 30 entre les angles coniques θ10 et θ11.Figure 12 shows a fifth embodiment of the device of the invention. This device comprises a photosensitive element 29 and an integrating optical system 30 fixed on a base 31. The system optics 30 is symmetrical about a vertical axis passing through the center of the photosensitive element. It comprises an upper part of conical or pyramidal shape extended by a convex ring fixed at its base to the base 31 and is made of diffusing plastic. A transmission mask 32 is applied to the external part of the integrating optical system 30 between the conical angles θ10 and θ11.

Une variante de la forme d'exécution de la figure 12 est représentée en figure 13. Cette variante comprend un élément photosensible 33, un système optique intégrateur pondéré 34 et un socle 35 analogues à ceux de la forme d'exécution précédente. Elle comprend en outre un masque de transmission 36 disposé à l'intérieur du système optique 34 autour de l'élément photosensible 33. Ce masque 36 est destiné à atténuer l'intensité des rayons lumineux incidents avec un angle entre l'horizontale et l'angle conique θ12. Il a une forme cylindrique d'axe l'axe de symétrie du système optique 34, une section circulaire si le système optique a une forme conique, ou carrée si le système optique 34 a une forme pyramidale. Le système optique 34 est de plus muni sur sa surface intérieure d'une plaque réfléchissante 37 disposée de telle façon que les rayons lumineux incidant avec un angle supérieur à θ13 sont focalisés vers l'élément photosensible 33.A variant of the embodiment of Figure 12 is shown in Figure 13. This variant comprises a photosensitive element 33, a weighted integrating optical system 34 and a base 35 similar to those of the previous embodiment. It further comprises a transmission mask 36 placed inside the optical system 34 around the photosensitive element 33. This mask 36 is intended to attenuate the intensity of the incident light rays with an angle between the horizontal and the conical angle θ12. It has a cylindrical shape of axis the axis of symmetry of the optical system 34, a circular section if the optical system has a conical shape, or square if the optical system 34 has a pyramidal shape. The optical system 34 is moreover provided on its inner surface with a reflecting plate 37 arranged in such a way that the light rays incident with an angle greater than θ13 are focused towards the photosensitive element 33.

Selon les caractéristiques du lieu où le dispositif selon l'invention est destiné à être utilisé, le masque de transmission peut être à coefficient de transmission nul ou différent de zéro.According to the characteristics of the place where the device according to the invention is intended to be used, the transmission mask can be of zero transmission coefficient or different from zero.

Claims (10)

Dispositif photosensible pour installation de commande du niveau d'éclairement d'un local pourvu d'au moins une ouverture permettant l'entrée de la lumière naturelle, ce dispositif étant destiné à être disposé à l'endroit devant être éclairé pour délivrer une grandeur représentative de l'éclairement à cet endroit, caractérisé en ce qu'il comprend au moins un élément photosensible (10 ; 14 ; 18 ; 22) associé à un système optique intégrateur pondéré (11 ; 15 ; 19 ; 23) présentant une sensibilité atténuée dans une plage comprise entre deux valeurs d'angle conique αCmin et αCmax telles que αCmin est inférieur à αSmin et que αCmax est supérieur à αSmax, αC représentant l'angle conique d'un cône ayant pour sommet l'élément photosensible et les angles sphériques αSmin et αSmax représentant les limites de la portion de sphère, centrée sur l'élément photosensible, dans laquelle l'élément photosensible peut être éclairé directement par le soleil.Photosensitive device for installation for controlling the level of lighting in a room provided with at least one opening allowing the entry of natural light, this device being intended to be placed at the place to be lit to deliver a representative quantity of the illumination at this location, characterized in that it comprises at least one photosensitive element (10; 14; 18; 22) associated with a weighted integrating optical system (11; 15; 19; 23) exhibiting attenuated sensitivity in a range between two values of conical angle αCmin and αCmax such that αCmin is less than αSmin and that αCmax is greater than αSmax, αC representing the conical angle of a cone with the photosensitive element and the spherical angles αSmin and αSmax representing the limits of the portion of sphere, centered on the photosensitive element, in which the photosensitive element can be illuminated directly by the Sun. Dispositif selon la revendication 1, caractérisé en ce qu'il comprend un élément (10) photosensible sur ses faces horizontales supérieure et inférieure, disposé au centre d'un système optique intégrateur (11) en forme de sphère reposant sur un socle (12) contenant l'électronique du dispositif et qu'un masque de transmission (13) est apposé sur la surface extérieure du système optique intégrateur (11) entre deux angles coniques θ3 et θ4.Device according to claim 1, characterized in that it comprises a photosensitive element (10) on its upper and lower horizontal faces, arranged in the center of an integrating optical system (11) in the form of a sphere resting on a base (12) containing the electronics of the device and that a transmission mask (13) is affixed to the exterior surface of the integrating optical system (11) between two conical angles θ3 and θ4. Dispositif selon la revendication 1, caractérisé en ce qu'il comprend un élément (14) photosensible sur ses faces horizontales supérieure et inférieure, disposé au centre d'un système optique intégrateur (15) en forme d'ellipsoïde reposant sur un socle (16) contenant l'électronique du dispositif et qu'un masque de transmission (17) est apposé sur la surface extérieure du système optique intégrateur (15) entre deux angles coniques θ5 et θ6.Device according to claim 1, characterized in that it comprises a photosensitive element (14) on its upper and lower horizontal faces, arranged at the center of an integrating optical system (15) in the form of an ellipsoid resting on a base (16) containing the electronics of the device and a transmission mask (17) is affixed to the exterior surface of the integrating optical system (15 ) between two conical angles θ5 and θ6. Dispositif selon la revendication 1, caractérisé en ce qu'il comprend un élément (18) photosensible sur ses faces horizontales supérieure et inférieure, situé au centre d'un système optique intégrateur (19) fixé à un socle (20) contenant l'électronique du dispositif, et constitué de deux parties ellipsoïdales (19a, 19b) symétriques par rapport au plan horizontal passant par l'élément photosensible (18) et reliées entre elles par une partie cylindrique (19c), et que la partie ellipsoïdale supérieure (19a) est recouverte entre les angles θ7, θ8 d'un masque de transmission (21).Device according to claim 1, characterized in that it comprises a photosensitive element (18) on its upper and lower horizontal faces, situated in the center of an integrating optical system (19) fixed to a base (20) containing the electronics of the device, and consisting of two ellipsoidal parts (19a, 19b) symmetrical with respect to the horizontal plane passing through the photosensitive element (18) and connected together by a cylindrical part (19c), and that the upper ellipsoidal part (19a) is covered between the angles θ7, θ8 with a transmission mask (21). Dispositif selon la revendication 1, caractérisé en ce qu'il comprend un élément (22) photosensible sur sa face horizontale supérieure et un système optique intégrateur (23) symétrique par rapport à un axe vertical et reposant sur un socle (24) contenant l'électronique du dispositif, la partie supérieure (23a) de la surface extérieure du système optique (23) ayant la forme d'un paraboloïde de foyer F1, ce paraboloïde (23a) étant prolongé par une partie (23b) cylindrique, elle-même prolongée par une partie torique (23c) formée par la révolution d'un cercle de centre F2 autour de l'axe de symétrie vertical du système optique (23), la surface intérieure du système optique (23) présentant une partie supérieure (23d) hémisphérique de centre F1 prolongée par un anneau (23e) formé par la révolution d'une parabole de foyer F2 autour de l'axe de symétrie vertical du système optique (23), la partie torique (23c) de la surface extérieure et l'anneau (23e) de la surface intérieure se rejoignant sur le socle (24), qu'un masque de transmission (25) réfléchissant est apposé sur le paraboloïde (23a) entre un angle θ9 et le bord du paraboloïde et sur la partie cylindrique (23b) de la surface extérieure du système optique (23) et qu'un masque de transmission (26) réfléchissant est apposé sur l'anneau (23e) de la surface intérieure du système optique (23).Device according to claim 1, characterized in that it comprises a photosensitive element (22) on its upper horizontal face and an integrating optical system (23) symmetrical with respect to a vertical axis and resting on a base (24) containing the electronics of the device, the upper part (23a) of the external surface of the optical system (23) having the form of a paraboloid of focus F1, this paraboloid (23a) being extended by a cylindrical part (23b), itself extended by a toric part (23c) formed by the revolution of a circle of center F2 around the vertical axis of symmetry of the optical system (23), the inner surface of the optical system (23) having a hemispherical upper part (23d) F1 center extended by a ring (23e) formed by the revolution of a hearth dish F2 around the vertical axis of symmetry of the optical system (23), the toric part (23c) of the external surface and the ring (23e) of the internal surface joining on the base (24), that a mask reflective transmission (25) is affixed on the paraboloid (23a) between an angle θ9 and the edge of the paraboloid and on the cylindrical part (23b) of the external surface of the optical system (23) and that a transmission mask (26 ) reflecting is affixed to the ring (23e) of the interior surface of the optical system (23). Dispositif selon la revendication 1, caractérisé en ce qu'il comprend un élément (29 ; 33) photosensible fixé sur un socle (31 ; 35) et un système optique intégrateur (30 ; 34) symétrique par rapport à un axe vertical passant par le centre de l'élément photosensible, que le système optique intégrateur a une forme conique ou pyramidale dans sa partie supérieure et que cette partie conique ou pyramidale est prolongée par un anneau convexe fixé à sa base sur le socle (31; 35).Device according to claim 1, characterized in that it comprises a photosensitive element (29; 33) fixed on a base (31; 35) and an integrating optical system (30; 34) symmetrical with respect to a vertical axis passing through the center of the photosensitive element, that the integrating optical system has a conical or pyramidal shape in its upper part and that this conical or pyramidal part is extended by a convex ring fixed at its base on the base (31; 35). Dispositif selon la revendication 6, caractérisé en ce qu'un masque de transmission (32) est disposé à l'extérieur du système optique intégrateur (30) entre les angles coniques θ10 et θ11.Device according to claim 6, characterized in that a transmission mask (32) is arranged outside the integrating optical system (30) between the conical angles θ10 and θ11. Dispositif selon la revendication 6, caractérisé en ce qu'un masque de transmission (36) est placé à l'intérieur du système optique intégrateur (34) autour de l'élément photosensible (33), ce masque de transmission (36) étant dimensionné de façon à atténuer l'intensité des rayons lumineux incidant avec un angle entre θ12 et l'horizontale après leur passage au travers du système optique (34) et qu'une plaque réfléchissante (37) destinée à focaliser vers l'élément photosensible les rayons lumineux d'incidence supérieure à un angle conique θ13 est disposée sur la surface intérieure du système optique intégrateur (34).Device according to claim 6, characterized in that a transmission mask (36) is placed inside the integrating optical system (34) around the photosensitive element (33), this transmission mask (36) being dimensioned so as to attenuate the intensity of the incident light rays with an angle between θ12 and the horizontal after passing through through the optical system (34) and that a reflecting plate (37) intended to focus towards the photosensitive element the light rays of incidence greater than a conical angle θ13 is arranged on the interior surface of the integrating optical system (34). Dispositif selon l'une des revendications 2 à 4, caractérisé en ce que le système optique intégrateur pondéré (11 ; 15 ; 19) est en matière injectée et que l'élément photosensible (10 ;14 ; 18) est noyé dans la matière du système optique (11 ; 15 ; 19).Device according to one of claims 2 to 4, characterized in that the weighted integrating optical system (11; 15; 19) is made of injected material and that the photosensitive element (10; 14; 18) is embedded in the material of the optical system (11; 15; 19). Dispositif selon l'une des revendications 6 à 8, caractérisé en ce que le système optique est en matière plastique diffusante.Device according to one of claims 6 to 8, characterized in that the optical system is made of diffusing plastic.
EP96810687A 1995-10-25 1996-10-14 Photoresponsive device for controlling the lighting in a room Expired - Lifetime EP0770949B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9512581A FR2740573B1 (en) 1995-10-25 1995-10-25 PHOTOSENSITIVE DEVICE FOR INSTALLING CONTROLS FOR THE LIGHT LEVEL OF A ROOM
FR9512581 1995-10-25

Publications (2)

Publication Number Publication Date
EP0770949A1 true EP0770949A1 (en) 1997-05-02
EP0770949B1 EP0770949B1 (en) 2001-09-05

Family

ID=9483897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810687A Expired - Lifetime EP0770949B1 (en) 1995-10-25 1996-10-14 Photoresponsive device for controlling the lighting in a room

Country Status (6)

Country Link
EP (1) EP0770949B1 (en)
JP (1) JPH09178552A (en)
AT (1) ATE205315T1 (en)
DE (1) DE69614964D1 (en)
ES (1) ES2104540T1 (en)
FR (1) FR2740573B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3041396A1 (en) * 1980-11-03 1982-05-13 Karl Albert 7000 Stuttgart Krieger Sensor for adjusting illumination level for external light - is closed hollow box contg. indirectly illuminated photoelectric sensor
DE3526590A1 (en) * 1985-07-25 1986-01-02 Zinnecker, Elisabeth, 7891 Lottstetten Method and arrangement for controlling an illumination system
WO1986005351A1 (en) * 1985-03-04 1986-09-12 Stiftelsen For Industriell Og Teknisk Forskning Ve Device for control of lighting fixture
FR2676842A1 (en) * 1991-05-22 1992-11-27 Somfy INSTALLATION OF AUTOMATIC CONTROL OF THE ILLUMINATION LEVEL OF A PREMISES.
FR2678752A1 (en) * 1991-07-03 1993-01-08 Somfy INSTALLATION FOR CONTROLLING THE ILLUMINATION LEVEL OF A PREMISES.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3041396A1 (en) * 1980-11-03 1982-05-13 Karl Albert 7000 Stuttgart Krieger Sensor for adjusting illumination level for external light - is closed hollow box contg. indirectly illuminated photoelectric sensor
WO1986005351A1 (en) * 1985-03-04 1986-09-12 Stiftelsen For Industriell Og Teknisk Forskning Ve Device for control of lighting fixture
DE3526590A1 (en) * 1985-07-25 1986-01-02 Zinnecker, Elisabeth, 7891 Lottstetten Method and arrangement for controlling an illumination system
FR2676842A1 (en) * 1991-05-22 1992-11-27 Somfy INSTALLATION OF AUTOMATIC CONTROL OF THE ILLUMINATION LEVEL OF A PREMISES.
FR2678752A1 (en) * 1991-07-03 1993-01-08 Somfy INSTALLATION FOR CONTROLLING THE ILLUMINATION LEVEL OF A PREMISES.

Also Published As

Publication number Publication date
ES2104540T1 (en) 1997-10-16
JPH09178552A (en) 1997-07-11
FR2740573A1 (en) 1997-04-30
ATE205315T1 (en) 2001-09-15
EP0770949B1 (en) 2001-09-05
DE69614964D1 (en) 2001-10-11
FR2740573B1 (en) 1997-12-26

Similar Documents

Publication Publication Date Title
FR2823832A1 (en) Infrared irradiation lamp for long range observation of lane markings and obstacles by vehicle driver, guides light from clearance provided between reflector and rear end of globe to peripheral region of light source in reflector
BE1026391B1 (en) LUMINAIRE SYSTEM WITH SUPPORT DEVICE
FR2923854A1 (en) METHOD FOR AUTOMATED CONTROL OF A SOLAR PROTECTION INSTALLATION
WO2014191287A1 (en) Device for creating light effects
EP0189717A1 (en) Device and installation for the instantaneous detection of one or more physical phenomena having a risk character
CA3125842A1 (en) Vision accessory in sub-ceiling layer for an infrared detector
FR2780486A3 (en) Motor vehicle light arrangement, e.g. a flashing light
EP0709692A1 (en) Optoelectronic sensor for measuring the intensity and the direction of incidence of a light beam
EP0770949B1 (en) Photoresponsive device for controlling the lighting in a room
FR2604242A1 (en) APPARATUS FOR COLLECTING SOLAR RAYS.
FR2761027A1 (en) CORRECTION DEVICE FOR ORIENTATION OF A MOTOR VEHICLE PROJECTOR
EP0630766B1 (en) Apparatus for projecting/reflecting images
EP1647955B1 (en) Mirror-based device for the detection and/or emission of radiation, in particular infrared radiation
EP0736416B1 (en) Dashboard for automotive vehicle with lighting device
FR2732655A1 (en) INDICATOR LIGHTING DEVICE AND DASHBOARD INCORPORATING THE SAME
CA3125827A1 (en) Very wide-angle viewing accessory for infrared detector
EP2080153B1 (en) Equipment for detecting the uniqueness of a person in a volume
EP1077641B1 (en) Compact optical fingerprint sensor
FR2888610A1 (en) Light measuring or detecting home automation device, e.g. for glazing of skylight, has part placed in fixed manner with respect to glazing and connected mechanically to movable part by linear slide, where movable part has light sensor
WO2020144232A1 (en) Infrared detector for sub-ceiling layer
WO2004013536A1 (en) Solar reflective device
FR2506329A1 (en) Charge profile determination in a blast furnace - by optical methods using a laser
FR3023350A1 (en) LIGHTING AND / OR SIGNALING SYSTEM FOR A MOTOR VEHICLE
FR2785397A1 (en) IMAGE PROJECTION SYSTEM
BE548413A (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES GB IT LI NL SE

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MILLET, AURELE

Inventor name: GREHANT, BERNARD

REG Reference to a national code

Ref country code: ES

Ref legal event code: BA2A

Ref document number: 2104540

Country of ref document: ES

Kind code of ref document: T1

17P Request for examination filed

Effective date: 19971028

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20001109

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES GB IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20010905

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20010905

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 20010905

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20010905

REF Corresponds to:

Ref document number: 205315

Country of ref document: AT

Date of ref document: 20010915

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20010919

REF Corresponds to:

Ref document number: 69614964

Country of ref document: DE

Date of ref document: 20011011

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: BUGNION S.A.

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20011206

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20010905

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020326

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20041102

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20041217

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051031

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051031

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

BERE Be: lapsed

Owner name: *SOMFY

Effective date: 20051031