EP0770949B1 - Photoresponsive device for controlling the lighting in a room - Google Patents

Photoresponsive device for controlling the lighting in a room Download PDF

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Publication number
EP0770949B1
EP0770949B1 EP96810687A EP96810687A EP0770949B1 EP 0770949 B1 EP0770949 B1 EP 0770949B1 EP 96810687 A EP96810687 A EP 96810687A EP 96810687 A EP96810687 A EP 96810687A EP 0770949 B1 EP0770949 B1 EP 0770949B1
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EP
European Patent Office
Prior art keywords
optical system
photosensitive element
photosensitive
conical
angle
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EP96810687A
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German (de)
French (fr)
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EP0770949A1 (en
Inventor
Bernard Grehant
Aurèle Millet
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Somfy SA
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Somfy SA
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    • 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 lighting level controls a room provided with at least one opening allowing the entry of natural light, this device being intended to be placed within easy reach of the user to deliver a quantity sufficiently representative of the overall brightness level at inside the whole room.
  • the patents FR 91 06 160 and FR 91 08 331 describe systems ensuring the management of light comfort at inside a room with at least one bay allowing the entry of light and equipped with means blackout and / or artificial lighting. These means of occulation or lighting are electrically maneuverable by means of a transportable remote control device, usually placed on the work surface or on the bedside table. They include a light sensor intended to transmit the state of the illumination to a logical processing unit which according to the instruction of illuminance given will send orders through of concealment and illumination for more or less of illumination.
  • the senor Given its small dimensions, the sensor is will find, in such a situation, either in an area brightly lit directly, either in one area only illuminated by diffusion of all surfaces.
  • the illumination of a directly lit surface by the sun being several hundred times greater to the illumination of the same surface subjected to the luminance of the other surfaces of the room, a sensor elementary will give extremely different values in both locations a few inches from distance while the overall level of illumination is the same.
  • the solution which so far has been given to this problem, is to have the light sensors at the ceiling of the premises so that they are not reached by direct sunlight. Now, it makes sense to associate the light sensor with the medium of the concealment means which must necessarily be accessible by the occupant. He is in also advantageous that the sensor is sensitive to the level of illumination close to the user: his plan of work, his bedside table.
  • the object of the invention is to make a small sensor allowing to provide a practical solution.
  • the photosensitive device characterized in that it comprises at less a photosensitive element associated with an optical system weighted integrator with 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 for vertex photosensitive element and spherical angles ⁇ Smin and ⁇ Smax representing the limits of the portion sphere, centered on the photosensitive element, in which the photosensitive element can be illuminated directly by the sun.
  • the weighted optical system has a attenuated sensitivity in areas where the sensor is likely to be directly lit by the sun, the luminance of direct sunlight perceived by the sensor is much weaker. The sensor is therefore less sensitive to direct sunlight and reacts exclusively at the overall level of illumination.
  • the optical system integrator is injected material and the element photosensitive is embedded in the system material integrative optics.
  • Figures 1 and 2 show the different effects of direct solar radiation to which submitted a sensor placed on a work surface in a room lit across a bay.
  • Figures 3 to 6 are schematic representations the volume of use of a device according to the invention in different premises subject to different effects of direct solar radiation.
  • FIG. 7 illustrates the description of the device according to the invention.
  • Figures 7a, 7b and 7c are diagrams representing different laws of sensitivities to the 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.
  • Figures 1 and 2 show a room 1 in which a photosensitive device 2 is placed on a table 3.
  • the device 2 can perceive direct lighting of the sun between a determined angle ⁇ S1 and an angle ⁇ S2 either by the heights HB min and HB max of the bay (Figure 1), either by the extreme values of the solar height (Figure 2) or a combination of the two.
  • angles ⁇ S1 and ⁇ S2 are bounded by angles ⁇ Smin and ⁇ Smax, ⁇ Smin denoting the extreme value of closing of the angle ⁇ S1 and ⁇ Smax designating the value extreme opening of the angle ⁇ S2 when the element photosensitive is moved 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 lower than ⁇ Cmax.
  • To determine the volume of use of the device just draw, on the vertical section from the local, a straight line 4 of inclination ⁇ Cmin with respect to vertically and leaning against the top of the bay and a straight line 5 of inclination ⁇ Cmax relative 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, sunbeams directly illuminate part of the surface of the device whose sensitivity is not not attenuated.
  • 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 at the horizon is greater than 20 °.
  • the configuration of the room and its bays will not so in such places more importance as to the risk for the sensor to be lit by the sun at its zenith or on the horizon.
  • volume of use of the same device is represented for the same type of premises, in the same environmental conditions, but at a latitude closer to the equator, such that the sun can be less than 20 ° from the vertical.
  • Volume in this case V2 is limited in this case.
  • FIG. 7 shows schematically a sensor satisfying the above conditions.
  • This sensor comprises a photosensitive element 6, arranged on a base 7 containing the electronics of the sensor, associated with a weighted integrating optical system 8.
  • This sensor exhibits attenuated sensitivity in range 9 between two angle values ⁇ 1 and ⁇ 2.
  • ⁇ 1 (respectively ⁇ 2) is chosen according to optical characteristics of the integrator system weighted 8 and of the conical angle ⁇ Cmax (respectively ⁇ Cmin) wanted.
  • the integrator's sensitivity law can present a sudden change, as shown in Figure 7a.
  • the sensitivity can be, for example, equal to 0.01 for surfaces between the conical angles ⁇ Cmin and ⁇ Cmax and equal to 1 for surfaces remaining.
  • the law of sensitivity can also have a profile to progressive variation as shown in Figure 7b and present a more or less steep slope on the way from the sensitive zone of the device to the minus zone sensitive.
  • the sensitivity will be normal for allow the integration of lighting, for example of the ceiling, just like between ⁇ Cmax and a chosen angle 120 °, to allow the integration of the lighting, for example, the worktop and the floor.
  • This 120 ° angle can be changed, depending on the opening of the normal integration zone.
  • Figures 8 to 11 show several embodiments preferred processes of the invention, in which a value of 20 ° is assigned to the angle ⁇ Cmin and a 80 ° value at angle ⁇ Cmax, these values corresponding to a compromise for an urban local of industrialized country under a latitude of 45 °.
  • the different embodiments of the device according to the invention shown have curves of sensitivity as a function of the angle of illumination different due to their geometric shape the sensitivity of certain sectors angles can also be changed by filing a attenuating mask.
  • FIG. 8 schematically represents a first realization of the device according to the invention.
  • This device includes a photosensitive element 10 on its upper horizontal face and its horizontal face lower.
  • This photosensitive element 10 is disposed at 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).
  • Angle light rays between 0 ° and ⁇ Cmin and between ⁇ Cmax and 120 ° directly reach the photosensitive element 10 after diffraction during the penetration into the integrating optical system 11.
  • the light rays inciting with an angle between ⁇ Cmin and ⁇ Cmax also arrive after diffraction at the photosensitive element, but with intensity greatly reduced due to the transmission mask 13.
  • Figure 9 schematically represents a second realization of the device according to the invention.
  • This device includes a photosensitive element 14 on its upper horizontal face and its horizontal face lower and located in the center of an optical system integrator 15 in the shape of an ellipsoid, resting on a base 16 containing the electronics of the device.
  • This optical system 15 is covered with a mask transmission 17 between the conical angles ⁇ 5 and ⁇ 6.
  • the spokes angle light between 0 ° and ⁇ Cmin and between ⁇ Cmax and 120 ° reach the element directly photosensitive 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 mask of transmission 17.
  • a third embodiment of the device according to the invention is shown schematically in the figure 10.
  • This device comprises a photosensitive element 18 on its two upper horizontal faces and lower, located in the center of an optical system integrator 19 fixed to a base 20 containing the electronics of the device.
  • the optical system 19 is consisting of two ellipsoidal parts 19a, 19b symmetrical about the horizontal plane passing through the photosensitive element 18 and interconnected by a cylindrical part 19c.
  • the ellipsoidal part upper 19a is covered between the conical angles ⁇ 7 and ⁇ 8 of a transmission mask 21.
  • the light rays of angle between 0 ° and Cmin and between ⁇ Cmax and 120 ° reach the element directly photosensitive 18 after diffraction during penetration into the optical device.
  • the corner ones between ⁇ Cmin and ⁇ Cmax are attenuated in their intensity when passing through the mask transmission 21.
  • Figure 11 shows a fourth embodiment of the device according to the invention.
  • the device includes here a photosensitive element 22 on its horizontal face superior and an integrating optical system 23 resting on a base 24 containing the electronics of the device.
  • This integrating optical device 23 has a outer surface and an inner surface of different shapes, symmetrical about an axis vertical.
  • the upper part 23a of its outer surface has the shape of an extended F1 hearth dish by a vertical cylindrical part 23b, itself extended by a toric portion 23c.
  • This part toric 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 an upper part hemispherical center F1 23d extended by a ring 23rd formed by the revolution of an F2 hearth dish around the vertical axis of symmetry of the system optic 23. It is dimensioned in such a way that it is above the F1 focus of the paraboloid 23a.
  • the toric part 23c of the outer surface and the ring 23e of the interior surface meet on the base 24.
  • the photosensitive element 22 is located at the focus F1 of the dish 23a.
  • a transmission mask 25 is affixed to the dish 23a between the conical angle ⁇ 9 and the edge of the paraboloid and on the cylindrical part 23b of the outer surface of the integrating optical system 23.
  • a transmission mask 26 is affixed to the surface interior of the integrating optical system on the ring 23rd.
  • Angle light rays between 0 ° and ⁇ Cmin directly reach the photosensitive element 22 after diffraction during penetration into the integrating optical system 23.
  • Angle light rays between ⁇ Cmax and 120 ° reach photosensitive element 22 after two reflections, one on the reflective surface formed by the ring 23e of the interior surface of the system optic 23 and the other on the reflecting surface formed by the part of the paraboloid 23a covered with a transmission mask 25 along trajectories between trajectories 27 and 28.
  • Figure 12 shows a fifth embodiment of the device of the invention.
  • This device includes a photosensitive element 29 and an optical system integrator 30 fixed on a base 31.
  • the system optic 30 is symmetrical about a vertical axis passing through the center of the photosensitive element. he includes a conical top or pyramidal extended by a convex ring attached to its base at base 31 and is made of plastic diffusing.
  • a transmission mask 32 is applied on the outside 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 includes a photosensitive element 33, an optical system weighted integrator 34 and a base 35 similar to those of the previous embodiment.
  • She understands in in addition to a transmission mask 36 arranged at inside the optical system 34 around the element photosensitive 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. He has one cylindrical shape of axis the axis of symmetry of the system optics 34, a circular section if the system optic has a conical or square shape if the system optic 34 has a pyramidal shape.
  • the optical system 34 is further provided on its inner surface with a reflective plate 37 arranged in such a way that the light rays inciding with an angle greater than ⁇ 13 are focused towards the photosensitive element 33.
  • the mask may have a transmission coefficient zero or nonzero.

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  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Projection-Type Copiers In General (AREA)
  • Television Receiver Circuits (AREA)
  • Control Of Exposure In Printing And Copying (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 lighting level controls a room provided with at least one opening allowing the entry of natural light, this device being intended to be placed within easy reach of the user to deliver a quantity sufficiently representative of the overall brightness level at inside the whole 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 at inside a room with at least one bay allowing the entry of light and equipped with means blackout and / or artificial lighting. These means of occulation or lighting are electrically maneuverable by means of a transportable remote control device, usually placed on the work surface or on the bedside table. They include a light sensor intended to transmit the state of the illumination to a logical processing unit which according to the instruction of illuminance given will send orders through of concealment and illumination for more or less of 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 only however ignore the fact that most of the means blackout have a non-diffusing effect. This translates into sunny conditions direct, 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 local 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 level global illumination than 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.Given its small dimensions, the sensor is will find, in such a situation, either in an area brightly lit directly, either in one area only illuminated by diffusion of all surfaces. The illumination of a directly lit surface by the sun being several hundred times greater to the illumination of the same surface subjected to the luminance of the other surfaces of the room, a sensor elementary will give extremely different values in both locations a few inches from distance 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.When operating a facade awning, a shadow can move and reach the sensor then that the measurement given by it of too large lighting will have caused a closing command. The sensor is then suddenly subjected to a very strong decrease in brightness, which logically leads to an opening maneuver. An oscillating movement 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 so far has been given to this problem, is to have the light sensors at the ceiling of the premises so that they are not reached by direct sunlight. Now, it makes sense to associate the light sensor with the medium of the concealment means which must necessarily be accessible by the occupant. He is in also advantageous that the sensor is sensitive to the level of illumination close to the user: his plan of work, 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 resolved thus posed, particularly in its contradictory aspects, the object of the invention is to make a small sensor allowing to provide a practical solution.

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 less a photosensitive element associated with an optical system weighted integrator with 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 for vertex photosensitive element and spherical angles αSmin and αSmax representing the limits of the portion sphere, centered on the 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 a attenuated sensitivity in areas where the sensor is likely to be directly lit by the sun, the luminance of direct sunlight perceived by the sensor is much weaker. The sensor is therefore less sensitive to direct sunlight and reacts exclusively at 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 optical system integrator is injected material and the element photosensitive is embedded in the system material integrative optics.

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 to using execution examples shown 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 effects of direct solar radiation to which submitted a sensor placed on a work surface in a room lit across 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 the volume of use of a device according to the invention in different premises subject to different effects of direct solar radiation.

La figure 7 illustre la description du dispositif selon l'invention.Figure 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 representing different laws of sensitivities to the 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 by compared to the vertical.

Les figures 1 et 2 représentent un local 1 dans lequel un dispositif photosensible 2 est disposé sur une table 3.Figures 1 and 2 show 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 lighting of the sun between a determined angle αS1 and an angle αS2 either by the heights HB min and HB max of the bay (Figure 1), either by the extreme values of the solar height (Figure 2) or a 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 of the angle αS1 and αSmax designating the value extreme opening of the angle αS2 when the element photosensitive is moved 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 location, 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 lower 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 delimited sensitivity surface is delimited by the angles αCmin = 20 ° and αCmax = 80 ° and for a sun whose rays can be seen between 0 and 90 °. To determine the volume of use of the device, just draw, on the vertical section from the local, a straight line 4 of inclination αCmin with respect to vertically and leaning against the top of the bay and a straight line 5 of inclination αCmax relative 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, sunbeams directly illuminate part of the surface of the device whose sensitivity is not not attenuated. These two lines therefore determine the volume in which a specific device can be used. A device with the values αCmin and αCmax cited above has a volume of use V1 quite weak in the room in Figure 3. Par against, in the room according to Figure 4, this volume of use V1 is already more important.

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 at the horizon is greater than 20 °. For a device same angle characteristics as that of FIGS. 3 and 4, the configuration of the room and its bays will not so in such places more importance as to the risk for the sensor to be lit by the sun at its 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'apparaít 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 Figure 5, the volume of use of a device having these same characteristics, is shown for a room of the same type as that in Figure 3 but located at a latitude such as the sun at noon always remains at more than 20 ° from the vertical and in a environment such as the sun never appears to 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 represented for the same type of premises, in the same environmental conditions, but at a latitude closer to the equator, such that the sun can be less than 20 ° from the vertical. Volume in this case V2 is limited in this case.

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 1 et 2. 1 (respectivement 2) est choisi en fonction des caractéristiques optiques du système intégrateur pondéré 8 et de l'angle conique αCmax (respectivement αCmin) voulu.Figure 7 shows schematically a sensor satisfying the above conditions. This sensor comprises a photosensitive element 6, arranged on a base 7 containing the electronics of the sensor, associated with a weighted integrating optical system 8. This sensor exhibits attenuated sensitivity in range 9 between two angle values 1 and 2. 1 (respectively 2) is chosen according to optical characteristics of the integrator system weighted 8 and of 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 can present a sudden change, as shown in Figure 7a. The sensitivity can be, for example, equal to 0.01 for surfaces between the conical angles αCmin and αCmax and equal to 1 for surfaces remaining.

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 law of sensitivity can also have a profile to progressive variation as shown in Figure 7b and present a more or less steep slope on the way from the sensitive zone of the device to the minus zone sensitive.

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 neighborhood of the conical angle αCmax may be less pronounced than the one near the angle αCmin like this is shown 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 for allow the integration of lighting, for example of the ceiling, just like between αCmax and a chosen angle 120 °, to allow the integration of the lighting, for example, the worktop and the floor.

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°.Figures 8 to 11 show several embodiments preferred processes of the invention, in which a value of 20 ° is assigned to the angle αCmin and a 80 ° value at angle αCmax, these values corresponding to a compromise for an urban local of 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 curves of sensitivity as a function of the angle of illumination different due to their geometric shape the sensitivity of certain sectors angles can also be changed by filing a 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 were not represented.

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 3 et 4. Dans cette forme d'exécution particulière, l'angle 3 (respectivement 4) est confondu avec l'angle αCmin (respectivement αCmax).FIG. 8 schematically represents a first realization of the device according to the invention. This device includes a photosensitive element 10 on its upper horizontal face and its horizontal face lower. This photosensitive element 10 is disposed at 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. In this form of execution particular, the angle 3 (respectively 4) 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. Angle light rays between 0 ° and αCmin and between αCmax and 120 ° directly reach the photosensitive element 10 after diffraction during the penetration into the integrating optical system 11. The light rays inciting with an angle between αCmin and αCmax also arrive after diffraction at the photosensitive element, but with intensity greatly reduced 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 5 et 6.Figure 9 schematically represents a second realization of the device according to the invention. This device includes a photosensitive element 14 on its upper horizontal face and its horizontal face lower and located in the center of an optical system integrator 15 in the shape of an ellipsoid, resting on a base 16 containing the electronics of the device. This optical system 15 is covered with a mask transmission 17 between the conical angles 5 and 6.

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 with the previous embodiment, the spokes angle light between 0 ° and αCmin and between αCmax and 120 ° reach the element directly photosensitive 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 mask of transmission 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 7 et 8 d'un masque de transmission 21.A third embodiment of the device according to the invention is shown schematically in the figure 10. This device comprises a photosensitive element 18 on its two upper horizontal faces and lower, located in the center of an optical system integrator 19 fixed to a base 20 containing the electronics of the device. The optical system 19 is consisting of two ellipsoidal parts 19a, 19b symmetrical about the horizontal plane passing through the photosensitive element 18 and interconnected by a cylindrical part 19c. The ellipsoidal part upper 19a is covered between the conical angles 7 and 8 of 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 ° reach the element directly photosensitive 18 after diffraction during penetration into the optical device. The corner ones between αCmin and αCmax are attenuated in their intensity when passing through the mask transmission 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.Figure 11 shows a fourth embodiment of the device according to the invention. The device includes here a photosensitive element 22 on its horizontal face superior 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 a outer surface and an inner surface of different shapes, symmetrical about an axis vertical.

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 shape of an extended F1 hearth dish by a vertical cylindrical part 23b, itself extended by a toric portion 23c. This part toric 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 an upper part hemispherical center F1 23d extended by a ring 23rd formed by the revolution of an F2 hearth dish around the vertical axis of symmetry of the system optic 23. It is dimensioned in such a way that it is above the F1 focus 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 toric part 23c of the outer surface and the ring 23e of the interior 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 dish 23a.

Un masque de transmission 25 est apposé sur le paraboloïde 23a entre l'angle conique 9 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 dish 23a between the conical angle 9 and the edge of the paraboloid and on 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 surface interior of the integrating optical system on the ring 23rd.

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.Angle light rays between 0 ° and αCmin directly reach the photosensitive element 22 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.Angle light rays between αCmax and 120 ° reach photosensitive element 22 after two reflections, one on the reflective surface formed by the ring 23e of the interior surface of the system optic 23 and the other on the reflecting surface formed by the part of the paraboloid 23a covered with a transmission mask 25 along trajectories between trajectories 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 10 et 11.Figure 12 shows a fifth embodiment of the device of the invention. This device includes a photosensitive element 29 and an optical system integrator 30 fixed on a base 31. The system optic 30 is symmetrical about a vertical axis passing through the center of the photosensitive element. he includes a conical top or pyramidal extended by a convex ring attached to its base at base 31 and is made of plastic diffusing. A transmission mask 32 is applied on the outside of the integrating optical system 30 between the conical angles 10 and 11.

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 12. 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 13 sont focalisés vers l'élément photosensible 33.A variant of the embodiment of Figure 12 is shown in Figure 13. This variant includes a photosensitive element 33, an optical system weighted integrator 34 and a base 35 similar to those of the previous embodiment. She understands in in addition to a transmission mask 36 arranged at inside the optical system 34 around the element photosensitive 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. He has one cylindrical shape of axis the axis of symmetry of the system optics 34, a circular section if the system optic has a conical or square shape if the system optic 34 has a pyramidal shape. The optical system 34 is further provided on its inner surface with a reflective plate 37 arranged in such a way that the light rays inciding with an angle greater than 13 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 mask may have a transmission coefficient zero or nonzero.

Claims (10)

  1. Photosensitive device for an installation for controlling the level of illumination of premises provided with at least one opening allowing natural light to enter, this device being intended to be arranged at the site requiring to be illuminated so as to deliver a quantity representative of the illumination at this site, 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 within a range lying between two conical angle values 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 whose vertex is the photosensitive element and the spherical angles αSmin and αSmax representing the limits of the spherical portion centered on the photosensitive element, within which the photosensitive element can be illuminated directly by the sun.
  2. Device according to claim 1, characterized in that it comprises an element (10) photosensitive on its upper and lower horizontal faces and arranged at the center of an integrating optical system (11) in the form of a sphere resting on a plinth (12) containing the electronics of the device and in that a transmission mask (13) is affixed to the outside surface of the integrating optical system (11) between two conical angles 3 and 4.
  3. Device according to claim 1, characterized in that it comprises an element (14) photosensitive on its upper and lower horizontal faces and arranged at the center of an integrating optical system (15) in the form of a ellipsoid resting on a plinth (16) containing the electronics of the device and in that a transmission mask (17) is affixed to the outside surface of the integrating optical system (15) between two conical angles 5 and 6.
  4. Device according to claim 1, characterized in that it comprises an element (18) photosensitive on its upper and lower horizontal faces and situated at the center of an integrating optical system (19) fixed to a plinth (20) containing the electronics of the device, and consisting of two ellipsoidal parts (19a, 19b) which are symmetric with respect to the horizontal plane passing through the photosensitive element (18) and are connected together by a cylindrical part (19c), and in that the upper ellipsoidal part (19a) is covered between the angles 7, 8 by a transmission mask (21).
  5. Device according to claim 1, characterized in that it comprises an element (22) photosensitive on its upper horizontal face and an integrating optical system (23) symmetric with respect to a vertical axis and resting on a plinth (24) containing the electronics of the device, the upper part (23a) of the outside surface of the optical system (23) having the shape of a paraboloid with focus F1, this paraboloid (23a) being extended by a cylindrical part (23b), itself extended by a toric part (23c) formed by revolving a circle with center F2 about the vertical axis of symmetry of the optical system (23), the inside surface of the optical system (23) exhibiting a hemispherical upper part (23d) with center F1, extended by an annulus (23e) formed by revolving a parabola with focus F2 about the vertical axis of symmetry of the optical system (23), the toric part (23c) of the outside surface and the annulus (23e) of the inside surface meeting on the plinth (24), in that a reflecting transmission mask (25) is affixed to the paraboloid (23a) between an angle 9 and the edge of the paraboloid and to the cylindrical part (23b) of the outside surface of the optical system (23) and in that a reflecting transmission mask (26) is affixed to the annulus (23e) of the inside surface of the optical system (23).
  6. Device according to claim 1, characterized in that it comprises a photosensitive element (29; 33) fixed on a plinth (31; 35) and an integrating optical system (30; 34) symmetric with respect to a vertical axis passing through the center of the photosensitive element, in that the integrating optical system has a conical or pyramidal shape in its upper part and in that this conical or pyramidal part is extended by a convex annulus fixed at its base to the plinth (31; 35).
  7. Device according to claim 6, characterized in that a transmission mask (32) is arranged outside the integrating optical system (30) between the conical angles 10 and 11.
  8. 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 light rays incident at an angle between 12 and the horizontal after they have passed through the optical system (34) and in that a reflecting plate (37) intended to focus towards the photosensitive element those light rays incident at an angle greater than the conical angle 13 is arranged on the inside surface of the integrating optical system (34).
  9. 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 in that the photosensitive element (10; 14; 18) is embedded in the material of the optical system (11; 15; 19).
  10. Device according to one of claims 6 to 8, characterized in that the optical system is made of a 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 EP0770949A1 (en) 1997-05-02
EP0770949B1 true EP0770949B1 (en) 2001-09-05

Family

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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)

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

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3041396C2 (en) * 1980-11-03 1983-10-27 Karl Albert 7000 Stuttgart Krieger Light sensor device for adapting the lighting of a given area to the brightness of extraneous light
NO158389C (en) * 1985-03-04 1988-08-31 Sintef LIGHT LIGHT CONTROL DEVICE.
DE3526590A1 (en) * 1985-07-25 1986-01-02 Zinnecker, Elisabeth, 7891 Lottstetten Method and arrangement for controlling an illumination system
FR2676842B1 (en) * 1991-05-22 1993-09-17 Somfy INSTALLATION OF AUTOMATIC CONTROL OF THE ILLUMINATION LEVEL OF A PREMISES.
FR2678752B1 (en) * 1991-07-03 1993-10-29 Somfy INSTALLATION FOR CONTROLLING THE ILLUMINATION LEVEL OF A PREMISES.

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Publication number Publication date
DE69614964D1 (en) 2001-10-11
ES2104540T1 (en) 1997-10-16
FR2740573B1 (en) 1997-12-26
EP0770949A1 (en) 1997-05-02
JPH09178552A (en) 1997-07-11
ATE205315T1 (en) 2001-09-15
FR2740573A1 (en) 1997-04-30

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